EP0385896A1 - Dispenser body, dispenser having such a body and cap therefor - Google Patents

Dispenser body, dispenser having such a body and cap therefor Download PDF

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Publication number
EP0385896A1
EP0385896A1 EP90420113A EP90420113A EP0385896A1 EP 0385896 A1 EP0385896 A1 EP 0385896A1 EP 90420113 A EP90420113 A EP 90420113A EP 90420113 A EP90420113 A EP 90420113A EP 0385896 A1 EP0385896 A1 EP 0385896A1
Authority
EP
European Patent Office
Prior art keywords
annular
dome
housing
dispenser
plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90420113A
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German (de)
French (fr)
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EP0385896B1 (en
Inventor
Jacques Godard
Bernard Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Albea Tubes France SAS
Original Assignee
Cebal SAS
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Filing date
Publication date
Application filed by Cebal SAS filed Critical Cebal SAS
Publication of EP0385896A1 publication Critical patent/EP0385896A1/en
Application granted granted Critical
Publication of EP0385896B1 publication Critical patent/EP0385896B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/38—Details of the container body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container

Definitions

  • the present invention relates to a preassembled dispenser body, to which dispensing means will typically be attached consisting of an aerosol valve or a pump surmounted by a dispensing nozzle for a liquid or creamy product.
  • the invention also relates to dispensers comprising such a body and the dome used.
  • a metal dispenser box of the aerosol type produced in one piece by impact spinning from an aluminum or alloy pellet, then by forming the end.
  • upper open of its cylindrical body in a constricted part or dome usually surmounted by a rolled edge.
  • This housing will then be filled with liquid or creamy product, and the dispensing valve will be fixed at its top by crimping the fixing cup of this valve around the previous rolled edge.
  • the narrowing of the upper end made in several passes is complicated.
  • the Applicant has sought to develop a distributor body which is easier to manufacture and does not lead to corrosion risks linked to its assembly into a distributor.
  • the first object of the invention is a dispenser body consisting of a housing which has a bottom and a side wall, and a dome sealingly attached to the upper end of said side wall of the housing.
  • this dome is made of plastic and comprises an annular veil of minimum thickness between 1.2 and 4 mm as well as two lower and upper annular portions allowing the fixing of this dome respectively on said side wall by direct axial fitting of said lower portion, and to distribution means, said fixing portions extending and framing said annular web.
  • This plastic dome is rigid and its thickness is chosen so that it resists both handling shocks and internal pressure when it is a body for an aerosol dispenser.
  • the dome is in itself a molded part simple to manufacture and light, its open shape at the base allows the use of a tubular body of the housing or a side wall of the housing, the upper end of which is slightly constricted into an annular portion. usually straight, i.e. generators of axial directions, or in a portion with a rolled edge.
  • the thickness of the side wall of a metal case of a dispensing body according to the invention may not be so only 0.5 times to 0.65 times what it should be in this case known from a one-piece dome shrunk to withstand a given pressure, which is a surprising result and of great economic advantage.
  • the thickness of the wall, or at least the thickness of its upper part is in fact provided as a function of the deformation with shrinkage, and this thickness is then typically 1.5 to 1.8 times the thickness that would be required to withstand the only pressure.
  • the weak shrinkage of the end of the housing in the case of the invention makes it possible to avoid the additional thickness thus linked to the deformation with significant shrinkage and provides a surprising saving in metal.
  • the housing can also be made of plastic. In the preassembled distribution body and in the distributor obtained with this body, there are only tight metal / plastic and possibly plastic / plastic assemblies, which eliminates the risks of corrosion which were linked to metal / metal crimps in prior art.
  • axial relates to the direction of the axis of the tubular body or of the side wall of the distributor supposed to be upright, so that “the top” and the “bottom” are respectively turned towards the distribution means and towards the bottom of the case.
  • Metal / plastic refers multilayer materials comprising at least one metallic layer and one plastic surface layer.
  • the annular dome is usually one of the materials of the group formed by: polyamides, polycarbonates, polyesters, polyacetal, polypropylene and polyethylene.
  • the annular veil of the annular dome has a minimum thickness preferably between 1.5 and 3 mm, and more preferably between 1.7 and 2.5 mm.
  • the molding of the dome makes it possible to easily obtain an asymmetrical annular veil, the geometry of the dome then being adapted to a distribution of oblique or lateral direction.
  • An example is given on this subject.
  • this is typically made of aluminum or alloy or tinplate, both of which can be coated with plastic and / or varnish and it is typically either '' a box with a metallic bottom, spun or stamped or stamped-drawn, or a box with a sealed crimped metal bottom.
  • the constriction of the upper end of the tubular body typically corresponds to a difference between overall diameter of the body and internal diameter of its reduced upper opening, ranging from 4 mm to at most 12 mm, and the thickness of the side wall is reduced as already indicated, corresponding as follows to the outside diameter of this wall, the thicknesses in parentheses relating to a tubular body spun from l prior art: . ⁇ 33mm to ⁇ 47mm: thickness 0.15 to 0.20mm (0.30 to 0.35mm) . ⁇ 47mm to ⁇ 55mm: thickness 0.20 to 0.25mm (0.35 to 0.4mm) . ⁇ 55mm to 80mm: thickness 0.25 to 0.35mm (0.4 to 0.6mm).
  • the second object of the invention is a dispenser comprising a dispenser body with an annular plastic dome according to the invention, according to any one of its embodiments, as well as dispensing means comprising either a dispensing valve of an aerosol, either a low or no return air pump equipped with a dispensing or spraying nozzle for a liquid or a cream, the collar or cup for fixing said valve or pump being crimped in a sealed manner on the outwardly swollen upper end of said annular dome.
  • the filling of the product can be done by the lower end of the body: before fitting the piston and then the attached foot in case (a), before the only fitting of the stand added in the latter case (c), the dispensing means being already fixed by crimping. Filling through the upper opening of the dome is necessary or usual in all other cases, it can also be practiced in the previous cases (a) and (c) after fixing the attached foot.
  • the third object of the invention is finally the annular dome itself, which has a structure particularly suitable for its attachment to the tubular body and for the attachment of the dispenser distribution means. Its upper annular end is swollen externally, forming a crimping ring, and its lower end portion is wider and has an open annular groove, of profile at least partially semicircular, allowing the rolled edge to be fitted a housing. Its annular veil has a minimum thickness of between 1.2 and 4 mm and is framed by the swollen upper end and by the lower end portion.
  • the lower end portion may comprise, in place of a groove, a skirt comprising an annular vertical inner surface which makes it possible to fit, with a clearance typically less than 0.1 mm in diameter, the right narrowed annular portion of the tubular body of plastic or metal externally coated with plastic of a housing, for its tight connection to this end portion by gluing or welding (typically by induction, ultrasound or rotation).
  • the annular dome typically has a minimum thickness of annular value of between 1.5 and 3 mm, and preferably between 1.7 and 2.5 mm, and is made of one of the plastics indicated above, the choice of polyethylene leading to preferably choose its varieties with high or medium density.
  • the dome resists internal or external pressure and operates the diameter variation between the housing and the distribution means.
  • the tubular body of the housing resists this same pressure, with a monobloc or attached bottom.
  • the waterproof fixings are preferably metal / plastic.
  • the part (dome + housing) 1 or distributor body 1 of FIG. 1 comprises a dome 2 made of high density polyethylene (PE.HD) and a housing 3 made of aluminum alloy with a 4-piece base obtained by stamping-drawing.
  • the dome 2 comprises at its upper end an external bulge 7 of external diameter 20 mm constituting a crimping ring 7 of the distribution means. It further comprises below this ring 7 a veil 8 of 2.3mm thickness which is substantially constant, then an enlarged lower circular portion 9, of external diameter 45 mm and internal diameter 39 mm, comprising at its end an open circular groove 10 of semi-circular profile with a radius of 1.5mm in axial section and an average diameter of 42mm.
  • the total height of dome 2 is 18mm.
  • the housing 3 has a thickness of cylindrical body 5 of 0.25 mm and a constricted opening 11 of diameter 36.5 mm surmounted by a rolled edge 12 over approximately 150 ° of external radius 1.3 mm.
  • the fixing of the dome 2 to the rolled edge 12 was made by surface oxidation of the circular groove 10 of the dome 2 (Corona treatment) and bonding with cyanoacrylate glue of this groove 10 fitted on the rolled edge 12 and held in a little support more than 30 seconds while the glue is drying.
  • the bonding technique used is the result of tests described below.
  • the housing 3 is intended for an aerosol application and its bottom 4 comprises an orifice for introducing a pressurized propellant gas and a plug 13 for sealing off this orifice.
  • the plastic surfaces must preferably be prepared by surface oxidation such as flame or Corona effect, and the aluminum surfaces must preferably be previously varnished, these adhesives do not give not a satisfactory adhesion on bare aluminum.
  • Silicone glue requires pressing times of 1 to 2 min and ambient drying times greater than 24 h.
  • the three cyanoacrylate adhesives give similar results: the pressing times can be limited to 5 to 10 seconds, and the parts can be handled after 30 seconds to 1 minute at room temperature. These cyanoacrylate adhesives are therefore much preferable for industrial application.
  • a distributor body 100 identical to the body 1 of FIG. 1 with the exception of the bottom 40 of its housing 53 which is sealed, was used to manufacture a pump distributor 14 (FIG. 2).
  • the metal fixing cup 15 of the pump 16 was crimped with a seal 150, which is here surmounted by a diffuser 17 on the bulged upper end 7 of the dome 2.
  • This pump 16 is here a pump without air return, that is to say without communication between the interior and the exterior of the container as known from documents EP-A-0143183 and EP-A-0251863, which allows good conservation of the product contained.
  • the inlet pipe of the pump 16 is provided with a dip tube 43 descending towards the bottom 40 of the housing 53, the initial filling of the product content being limited to 70% of the interior volume.
  • tests have shown that, with full 80% and more, the pumps without air return used do not work satisfactorily, and that with full 70%, the operation was always satisfactory.
  • a maximum filling of 75% must be respected in the scope of the present invention (capacities typically less than 1 liter) to obtain distributions without incident, the preferred fillings being from 60 to 75 %.
  • FIG. 2 Another dispenser body, identical to the body 100 of the second example, is used to obtain a dispenser 14 ′ of aerosol product according to the following modification (fig. 2): the pump 16 is replaced by a valve 16 ′ for aerosol attached to the bulged end 7 of the dome 2 by crimping its fixing cup which is similar to the cup 15 of the pump.
  • the distributor body 100 can thus have, as it is, two types of use.
  • annular dome 122 made of PA12 was prepared by molding, the upper end 7 of which, as well as the thickness and the inclination of the annular veil 8, are geometrically similar to those of the dome 2 in FIGS. 1 and 2, and the lower fixing portion 48 consists of a straight circular end skirt 48, the inner cylindrical surface 49 of diameter 40.1 mm fits with a slight clearance around the constricted end 47 of the housing 440.
  • the dome 122 was then glued with cyanoacrylate adhesive on the constricted end 47 of the housing, according to the technique described in Example 1, obtaining the preassembled distributor body 200. After filling with water, a non-return pump 16 identical to that of FIG. 2 was fixed by crimping to the end 7 of the dome 122, as in Example 2.
  • This pump 16 is of the type "VP7" from ESTABLISHMENTS VALOIS (France).
  • the emptying of the distributor obtained 140 by actuation of the pump 16 by acting on the diffuser 17 which overcomes it was obtained without any difficulty, the cutting of the distributor 140 emptied made it possible to note the final position of the sliding piston 45, the front of which 50 fits with a slight clearance inside the constriction 47 and the veil 8 of the dome 122 and envelops the pump 16, providing emptying better than 97%.
  • FIG. 4 represents the fixing of a dome 2 of the same geometry as in the first three examples, on a housing identical to the housing of FIG. 1 using an annular connecting piece 18 compatible both with the material plastic of dome 2 - here of PE.HD - and the metal of housing 3 - here of low alloy aluminum -.
  • This piece 18 of 0.2mm thickness is in complex containing the same polyolefin as that of the dome 2, that is to say of the PE, and of the EAA; its outer edge is snapped onto the end of the rolled edge 12, and after the positioning of the dome 2 which is applied by its circular groove 10 to the connecting piece 18, the welding is carried out by one of the following methods : by high frequency induction, by rotation, or by ultrasound by modifying the shape of the dome to support the ultrasonic transducer. .
  • the dome 2 set up by its circular groove 10 on the rolled edge 12 of the housing 3 has a circular groove end 10 projecting by about 1 mm from the end of the rolled edge 12, without obstruct the interior of this rolled edge 12.
  • the interior cavity of the rolled edge 12 is at least partially filled by partially melting the outer skirt 19 of the dome 2 bordering the end of the circular groove 10, this skirt 19 having at this location 1 mm thick.
  • a good quality sealed welded connection is obtained which extends the skirt 19.
  • the end 19 of the dome 2 thus secured by the molding must come near the end of the rolled edge, ie less than 0.5 mm. before this end or a little further leaving at least 1mm of passage towards the inside of the rolled edge 12. .
  • This part 20 here in PE like the dome 2 has a base 22 resting on this shoulder 21 of the housing 3, an upper portion 23 which will be crimped as shown by the rolling 12 of the upper end edge of the housing 3 , as well as one or more surfaces, here the two vertical 24 and horizontal 25 surfaces, coming into contact with the outer skirt 26 of the dome 2.
  • waterproof fixing is carried out by welding by rotation of the annular surfaces 24 and 25 against the annular portion 26 of the dome 2.
  • the fixing can also be made by welding by HF induction or by ultrasound.
  • the dome 102 (fig. 7) of the same geometry as the previous domes 2, was fitted during its molding with an annular washer 27 with a barrier effect.
  • This washer 27 is welded to the reverse face 28 of the dome 102 by a large face 29 and retained at its base by a small annular bead of plastic material 30. It generally has surface layers of polyolefin compatible with the polyolefin of the dome and an intermediate layer of Al or barrier plastic.
  • a 0.28 mm thick metalloplastic complex comprising 5 layers, ie 2 outer layers of PE-BD each of 90 ⁇ m thickness, framing 2 intermediate layers of 30 ⁇ m in copolymer adhesive based on EAA with a central layer of aluminum 40 ⁇ m thick.
  • the housing 103 of FIG. 8 is made of plastic, here PE-HD 0.6 mm thick in its cylindrical part.
  • This molded housing 103 has a cylindrical upper end 110 of reduced outside diameter 40mm, while the dome 112 has at its lower end a straight skirt 113 whose cylindrical inner surface of diameter 39.8mm fits tightly the end 110.
  • the fixing is then done by rotary welding (friction welding).
  • the fixing is made by gluing, the straight skirt 113 having a diameter of 40.2mm and the end 110 preferably comprising slight depressions in the retention of the adhesive, depressions connected together by hollows forming bridges and having a depth typical 0.03 to 0.08 mm.
  • the same structure is used for fixing a plastic dome 112 on the constricted end 210 of a metal case 203.
  • a connecting ring 118 of the same kind as the connecting piece 18 of Example 4 (fig .4) is then placed around the end 210 and the welding is typically carried out by HF induction or by rotation.
  • the inside diameter of the skirt 113 of the dome 112 and the thickness of the ring or bracelet 118 are chosen so as to slightly tighten them before welding. Bonding is also possible, the interior of the plastic skirt 118 being surface-oxidized beforehand and the exterior of the housing 203 is preferably varnished (see bonding tests in Example 1).
  • the housing 104 of FIG. 9 like the housing 103 of Example 8 is made of HDPE 0.6 mm thick in its cylindrical part.
  • This molded housing has at its upper end 116 a tube 111 of rectangular axial section which fits tightly between the inner skirt 115 and the outer skirt 113 of the dome 1120, the tube 111 being applied by its horizontal end against the bottom. of the groove 114.
  • the fixing is preferably made by rotation welding, it can also be carried out by gluing.
  • the horizontal annular surface 119 and the end 117 of the outer skirt 113 of the dome 1120 can also intervene in this fixing. In the case of rotary welding, friction is favored by this arrangement, resulting in good reproducibility of the results of the seal obtained.
  • FIG. 10 represents a metal case 33 without a monobloc bottom, therefore consisting of a portion of tube whose upper end is constricted, provided at its lower end with an attached foot 31, the side wall 32 of this case being nested around the outer tubular wall 34 of a foot made of PE.
  • This outer wall 34 is connected by its apex 35 to an inner wall 36 with which it forms an annular fold 42 open at its base and flexible, that is to say of modifiable spacing for any portion of its periphery, the wall inner 36 surrounding a central bottom 37 which extends it in a sealed manner and the outer wall 34 being surrounded by an edge 38 which is easy to deform transversely and elastically due to its small width and limited thickness.
  • This added foot 31 usable for other types of containers acts as a diameter compensator and provides a good seal for ovalizations corresponding to differences in diameters not exceeding twice the average interior width of its annular fold 42 It tends to return the wall 32 of the housing 33 to the round when this wall is semi-rigid.
  • the edge 38 is provided here with an outer rim 39 which makes it possible to protect the lower end of the side wall 32 of the housing 33.
  • This rim 39 carries an inner annular relief 41 which retains the slightly flared end of the wall 32. And this wall 32 clamps the outer wall 34 of the foot 31 to a certain height. The arrangement thus obtained easily lends itself to bonding.
  • the housing 33 fitted with the attached foot 31 was used in a pump distributor without air return, in which the pump inlet was provided with a dip tube, the filling volume being 70% of the interior volume. Emptying by vacuum does not require fixing by gluing, this being however preferable for the security of the fixing and for the inviolability of the container.
  • an attached foot such as 31 provided with an air passage orifice, the foot being put in place after introduction of a sliding piston in the bottomless housing of any kind, the distribution means also being a pump without air return.
  • the filling of the dispenser is then typically done by the upper opening of the dome before fixing the pump by crimping on this dome, but it is also possible to do it from the bottom of the housing before insertion of the sliding piston and preferably fixing the foot. reported allowing air to pass through.
  • FIG. 11 gives an example of the distributor arrangements which can be obtained with a plastic dome.
  • the schematic dome 212 has an outlet opening and a fixing ring 207 for the means of distribution of axis 201 lateral, here at about 90 ° from the axis 202 of symmetry of the groove 210 for fixing the dome 212 to a housing.
  • the veil 208 of this dome is highly asymmetrical.
  • the invention applies in the cosmetic, pharmaceutical, hygienic and food fields, for the storage and distribution of liquid or creamy products.

Abstract

The invention relates to a dispenser body (1) comprising a casing (3), which has a base (4) and side wall (5), and a cap (2) fitted tightly to the top (12) of said side wall (5) of the casing (3), characterised in that this cap (2) is made of a plastics material and has an annular covering (8) of minimal thickness of between 1.2 and 4 mm and also two annular portions, lower and upper (7 and 9), allowing this dome (2) to be fitted tightly, on the one hand, over said side wall (5, 12) and, on the other hand, to dispensing means. Said attaching portions (7, 9) are extensions of said annular covering (8) and delimit it. <??>The invention also relates to dispensers having this kind of dispenser body (1) and the corresponding cap (2). It is of application in the fields of cosmeticology, pharmaceuticals, hygiene and foods. <IMAGE>

Description

La présente invention concerne un corps de distributeur préassemblé, sur lequel on fixera des moyens de distribution consistant typiquement en une valve pour aérosol ou en une pompe surmontée d'une buse de distribution d'un produit liquide ou crémeux. L'invention concerne aussi les distribu­teurs comportant un tel corps et le dôme utilisé.The present invention relates to a preassembled dispenser body, to which dispensing means will typically be attached consisting of an aerosol valve or a pump surmounted by a dispensing nozzle for a liquid or creamy product. The invention also relates to dispensers comprising such a body and the dome used.

Comme l'indique le document FR-A-2606686, on connaît déjà un boîtier distri­buteur métallique du type aérosol réalisé en une seule pièce par filage par choc à partir d'une pastille d'aluminium ou alliage, puis par formage de l'extrémité supérieure ouverte de son corps cylindrique en une partie rétreinte ou dôme habituellement surmontée d'un bord roulé. Ce boîtier sera ensuite rempli de produit liquide ou crémeux, et la valve de distribu­tion sera fixée à son sommet par sertissage de la coupelle de fixation de cette valve autour du bord roulé précédent. Dans cette conception, le rétreint de l'extrémité supérieure fait en plusieurs passes est compliqué.As the document FR-A-2606686 indicates, there is already known a metal dispenser box of the aerosol type produced in one piece by impact spinning from an aluminum or alloy pellet, then by forming the end. upper open of its cylindrical body in a constricted part or dome usually surmounted by a rolled edge. This housing will then be filled with liquid or creamy product, and the dispensing valve will be fixed at its top by crimping the fixing cup of this valve around the previous rolled edge. In this design, the narrowing of the upper end made in several passes is complicated.

Il existe par ailleurs des boîtiers typiquement en fer blanc dont le corps est cylindrique, le fond étant serti, et la coupelle de fixation de la valve étant elle-même sertie à l'extrémité supérieure du corps après le remplissage de produit.There are also cases typically made of tinplate, the body of which is cylindrical, the bottom being crimped, and the valve fixing cup being itself crimped at the upper end of the body after filling with product.

Ces sertissages métal/métal entraînent malgré les revêtements des risques de corrosion.These metal / metal crimps involve corrosion risks despite the coatings.

La demanderesse a cherché à mettre au point un corps de distributeur de fabrication plus facile et ne conduisant pas à des risques de corrosion liés à son assemblage en distributeur.The Applicant has sought to develop a distributor body which is easier to manufacture and does not lead to corrosion risks linked to its assembly into a distributor.

EXPOSE DE L'INVENTIONSTATEMENT OF THE INVENTION

L'invention a pour premier objet un corps de distributeur consistant en un boîtier qui comporte un fond et une paroi latérale, et en un dôme fixé de façon étanche à l'extrémité supérieure de ladite paroi latérale du boîtier. Selon l'invention, ce dôme est en matière plastique et comporte un voile annulaire d'épaisseur minimale comprise entre 1,2 et 4 mm ainsi que deux portions annulaires inférieure et supérieure permettant la fixation de ce dôme respectivement sur ladite paroi latérale par emboîtage axial direct de ladite portion inférieure, et à des moyens de distribution, lesdites portions de fixation prolongeant et encadrant ledit voile annulaire.
Ce dôme en matière plastique est rigide et son épaisseur est choisie pour qu'il résiste à la fois aux chocs de manipulation et à la pression interne lorsqu'il s'agit d'un corps pour distributeur d'aérosol. Le dôme est en lui-même une pièce moulée simple à fabriquer et légère, sa forme épanouie à la base permet d'employer un corps tubulaire de boîtier ou une paroi latérale de boîtier, dont l'extrémité supérieure est faiblement rétreinte en une portion annulaire habituellement droite, c'est-à-dire de génératrices de directions axiales, ou en une portion portant un bord roulé.The first object of the invention is a dispenser body consisting of a housing which has a bottom and a side wall, and a dome sealingly attached to the upper end of said side wall of the housing. According to the invention, this dome is made of plastic and comprises an annular veil of minimum thickness between 1.2 and 4 mm as well as two lower and upper annular portions allowing the fixing of this dome respectively on said side wall by direct axial fitting of said lower portion, and to distribution means, said fixing portions extending and framing said annular web.
This plastic dome is rigid and its thickness is chosen so that it resists both handling shocks and internal pressure when it is a body for an aerosol dispenser. The dome is in itself a molded part simple to manufacture and light, its open shape at the base allows the use of a tubular body of the housing or a side wall of the housing, the upper end of which is slightly constricted into an annular portion. usually straight, i.e. generators of axial directions, or in a portion with a rolled edge.

Par rapport au cas d'un boîtier métallique réalisé en une seule pièce avec rétreint en dôme de son extrémité supérieure, l'épaisseur de la paroi latérale d'un boîtier métallique d'un corps de distribution selon l'invention peut n'être ainsi que 0,5 fois à 0,65 fois ce qu'elle doît être dans ce cas connu d'un dôme monobloc rétreint pour résister à une pression donnée, ce qui est un résultat surprenant et d'un grand avantage économique. Dans le cas d'un boîtier avec dôme rétreint de l'art antérieur, l'épaisseur de la paroi, ou tout au moins l'épaisseur de sa partie haute, est en effet prévue en fonction de la déformation avec rétreint, et cette épaisseur est alors typiquement 1,5 à 1,8 fois l'épaisseur qui serait nécessaire pour résister à la seule pression. Le rétreint faible de l'extrémité du boîtier dans le cas de l'invention permet d'éviter le supplément d'épaisseur ainsi lié à la déformation avec rétreint important et procure une économie de métal surprenante.
Le boîtier peut aussi être en matière plastique. Dans le corps de distribution préassemblé et dans le distributeur obtenu avec ce corps, il n'y a plus que des assemblages étanches métal/plastique et éventuellement plastique/plastique, ce qui élimine les risques de corrosion qui étaient liés aux sertissages métal/métal dans l'art antérieur.Compared to the case of a metal case made in one piece with a domed neck of its upper end, the thickness of the side wall of a metal case of a dispensing body according to the invention may not be so only 0.5 times to 0.65 times what it should be in this case known from a one-piece dome shrunk to withstand a given pressure, which is a surprising result and of great economic advantage. In the case of a housing with a shrunk dome of the prior art, the thickness of the wall, or at least the thickness of its upper part, is in fact provided as a function of the deformation with shrinkage, and this thickness is then typically 1.5 to 1.8 times the thickness that would be required to withstand the only pressure. The weak shrinkage of the end of the housing in the case of the invention makes it possible to avoid the additional thickness thus linked to the deformation with significant shrinkage and provides a surprising saving in metal.
The housing can also be made of plastic. In the preassembled distribution body and in the distributor obtained with this body, there are only tight metal / plastic and possibly plastic / plastic assemblies, which eliminates the risks of corrosion which were linked to metal / metal crimps in prior art.

Dans toute la description, "axial" concerne la direction de l'axe du corps tubulaire ou de la paroi latérale du distributeur supposé debout, de sorte que "le haut" et le "bas" sont respectivement tournés vers les moyens de distribution et vers le fond du boîtir. "Métal/plastique" se réfère à des matériaux multicouches comprenant au moins une couche métallique et une couche superficielle en matière plastique.Throughout the description, "axial" relates to the direction of the axis of the tubular body or of the side wall of the distributor supposed to be upright, so that "the top" and the "bottom" are respectively turned towards the distribution means and towards the bottom of the case. "Metal / plastic" refers multilayer materials comprising at least one metallic layer and one plastic surface layer.

Le dôme en matière plastique est fixé de façon étanche sur l'extrémité supérieure du corps tubulaire du boîtier, selon des méthodes bien adaptées à la fabrication en série et relevant des principes suivants : collage; soudage d'une pièce de liaison; réalisation d'un verrou en matière plastique soit par injection à l'intérieur du bord roulé surmontant le corps tubulai­re, soit par soudage par rotation (= par friction) d'une pièce en matière plastique emprisonnée par ledit bord roulé; soudage par friction sur l'extré­mité supérieure du boîtier dans le cas d'un boîtier en matière plastique. Ces diverses méthodes et les dispositions qui en résultent seront illustrées par les exemples. On obtient ainsi, selon une variété de modalités d'exécu­tion des corps de distributeurs dont les extrémités supérieures seront fixées de façon étanche à la coupelle de fixation de la valve ou de la pompe de distribution, typiquement par sertissage sur l'extrémité supérieure renflée extérieurement du dôme annulaire.The plastic dome is tightly fixed on the upper end of the tubular body of the housing, according to methods well suited to mass production and falling under the following principles: bonding; welding of a connecting piece; production of a plastic lock either by injection inside the rolled edge surmounting the tubular body, or by rotation welding (= by friction) of a plastic part trapped by said rolled edge; friction welding on the upper end of the housing in the case of a plastic housing. These various methods and the resulting arrangements will be illustrated by the examples. There are thus obtained, according to a variety of embodiments of the distributor bodies, the upper ends of which will be fixed in leaktight manner to the fixing cup of the valve or of the distribution pump, typically by crimping on the externally bulged upper end. of the annular dome.

Le dôme annulaire est habituellement en l'une des matières du groupe formé par : les polyamides, les polycarbonates, les polyesters, le polyacétal, le polypropylène et le polyéthylène.The annular dome is usually one of the materials of the group formed by: polyamides, polycarbonates, polyesters, polyacetal, polypropylene and polyethylene.

Pour satisfaire à l'impératif de résistance à la pression interne dans le cas des aérosols, par exemple une pression interne de 1,2 MPa, ou à celui de résistance à la dépression dans le cas de distributeurs équipés d'une pompe sans retour d'air, le voile annulaire du dôme annulaire a une épaisseur minimale de préférence comprise entre 1,5 et 3 mm, et de préférence encore comprise entre 1,7 et 2,5 mm.To meet the imperative of resistance to internal pressure in the case of aerosols, for example an internal pressure of 1.2 MPa, or to that of resistance to depression in the case of distributors equipped with a pump without return d air, the annular veil of the annular dome has a minimum thickness preferably between 1.5 and 3 mm, and more preferably between 1.7 and 2.5 mm.

La réalisation par moulage du dôme permet d'obtenir facilement un voile annulaire dissymétrique, la géométrie du dôme étant alors adaptée à une distribution de direction oblique ou latérale. Un exemple est donné à ce sujet.The molding of the dome makes it possible to easily obtain an asymmetrical annular veil, the geometry of the dome then being adapted to a distribution of oblique or lateral direction. An example is given on this subject.

Dans le cas fréquent d'un boîtier métallique, celui-ci est typiquement en aluminium ou alliage ou en fer blanc, l'un comme l'autre pouvant être revêtu de matière plastique et/ou de vernis et il s'agit typiquement soit d'un boîtier à fond métallique monobloc filé ou embouti ou embouti-étiré, soit d'un boîtier à fond métallique serti étanche.In the frequent case of a metal case, this is typically made of aluminum or alloy or tinplate, both of which can be coated with plastic and / or varnish and it is typically either '' a box with a metallic bottom, spun or stamped or stamped-drawn, or a box with a sealed crimped metal bottom.

Pour tous les cas qui précèdent et typiquement dans le cas d'un boîtier métallique en Al ou alliage d'Al, le rétreint de l'extrémité supérieure du corps tubulaire correspond typiquement à une différence entre diamètre hors-tout du corps et diamètre intérieur de son ouverture supérieure réduite, allant de 4 mm à au plus 12 mm, et l'épaisseur de la paroi latérale est réduite comme déjà indiqué, correspondant comme suit au diamètre extérieur de cette paroi, les épaisseurs entre parenthèses concernant un corps tubu­laire filé de l'art antérieur :
. ⌀ 33mm à < 47 mm : épaisseur 0,15 à 0,20 mm (0,30 à 0,35 mm)
. ⌀ 47mm à < 55 mm : épaisseur 0,20 à 0,25 mm (0,35 à 0,4 mm)
. ⌀ 55mm à 80 mm : épaisseur 0,25 à 0,35 mm (0,4 à 0,6 mm).For all of the above cases and typically in the case of a metal casing of Al or Al alloy, the constriction of the upper end of the tubular body typically corresponds to a difference between overall diameter of the body and internal diameter of its reduced upper opening, ranging from 4 mm to at most 12 mm, and the thickness of the side wall is reduced as already indicated, corresponding as follows to the outside diameter of this wall, the thicknesses in parentheses relating to a tubular body spun from l prior art:
. ⌀ 33mm to <47mm: thickness 0.15 to 0.20mm (0.30 to 0.35mm)
. ⌀ 47mm to <55mm: thickness 0.20 to 0.25mm (0.35 to 0.4mm)
. ⌀ 55mm to 80mm: thickness 0.25 to 0.35mm (0.4 to 0.6mm).

Ces valeurs de rétreint et d'épaisseur sont également valables pour les boîtiers en fer blanc utilisés selon l'invention.These shrinkage and thickness values are also valid for the tinplate housings used according to the invention.

Le faible rétreint et l'économie de métal remarquable qui lui est associée sont des avantages considérables de la nouvelle structure du corps de distributeur selon l'invention.The low shrinkage and the remarkable economy of metal associated with it are considerable advantages of the new structure of the distributor body according to the invention.

Pour les corps utilisés dans des distributeurs à pompe, on peut associer à un boîtier sans fond métallique ou métal/plastique ou en matière plasti­que un pied rapporté soit étanche, soit laissant passer de l'air lorsqu'on utilise un piston glissant. Un pied rapporté particulièrement intéressant est décrit dans l'Exemple 10.For the bodies used in pump dispensers, it is possible to associate with a housing without a metallic or metal / plastic or plastic bottom, an attached foot that is either waterproof or allowing air to pass when a sliding piston is used. A particularly interesting added foot is described in Example 10.

L'invention a pour deuxième objet un distributeur comportant un corps de distributeur avec dôme annulaire en matière plastique selon l'invention, selon l'un quelconque de ses modes de réalisation, ainsi que des moyens de distribution comprenant soit une valve de distribution d'un aérosol, soit une pompe à reprise d'air faible ou nulle équipée d'une buse de distri­bution ou de pulvérisation d'un liquide ou d'une crème, la collerette ou coupelle de fixation de ladite valve ou pompe étant sertie de façon étanche sur l'extrémité supérieure renflée extérieurement dudit dôme annu­laire.The second object of the invention is a dispenser comprising a dispenser body with an annular plastic dome according to the invention, according to any one of its embodiments, as well as dispensing means comprising either a dispensing valve of an aerosol, either a low or no return air pump equipped with a dispensing or spraying nozzle for a liquid or a cream, the collar or cup for fixing said valve or pump being crimped in a sealed manner on the outwardly swollen upper end of said annular dome.

Les types principaux de distributeurs selon l'invention sont ainsi :
- des distributeurs à valve de distribution d'un produit aérosol, le boîtier du corps de distributeur ayant un fond étanche monobloc ou serti, d'une rigidité suffisante;
- des distributeurs à pompe, la pompe étant de préférence sans retour d'air pour une meilleure conservation des produits :

  • a) le boîtier du corps n'ayant pas de fond ou un fond rapporté (= fond serti ou pied rapporté) qui laisse passer l'air, ce boîtier comprenant un piston glissant qui est introduit par l'extrémité inférieure du boîtier avant la mise en place éventuelle du fond;
  • b) le boîtier du corps ayant un fond pas ou peu démontable et laissant passer l'air, ce boîtier étant métallique ou métal/plastique et son fond étant habituellement monobloc (boîtier embouti et étiré), ce boîtier comprenant un piston glissant qui y a été introduit par son extrémité haute, cette extrémité ayant ensuite été rétreinte pour l'emboîtage de fixation du dôme annulaire en matière plastique;
  • c) le boîtier du corps ayant un fond étanche, non démontable ou un fond rapporté étanche, le pompage se faisant à volume intérieur fixe du distri­buteur, et la tubulure ou l'orifice d'aspiration de la pompe étant munie d'un tube plongeur, cette pompe est une pompe sans retour d'air.
The main types of distributors according to the invention are thus:
- dispensers with a valve for dispensing an aerosol product, the case of the dispenser body having a one-piece or crimped waterproof bottom, of sufficient rigidity;
- pump distributors, the pump preferably being without air return for better conservation of the products:
  • a) the housing of the body having no bottom or an added bottom (= crimped bottom or attached foot) which allows air to pass, this box comprising a sliding piston which is introduced by the lower end of the box before setting where applicable from the bottom;
  • b) the housing of the body having a bottom which is not or hardly removable and allowing air to pass through, this box being metallic or metal / plastic and its bottom being usually in one piece (pressed and drawn box), this box comprising a sliding piston which has was introduced by its upper end, this end having then been constricted for the fixing socket for the annular plastic dome;
  • c) the body casing having a sealed, non-removable bottom or a sealed attached bottom, the pumping being carried out at a fixed internal volume of the distributor, and the tubing or the suction orifice of the pump being provided with a dip tube , this pump is a pump without air return.

On remarque que lorsque le boîtier comporte un pied rapporté, le remplissage du produit peut se faire par l'extrémité inférieure du corps : avant mise en place du piston puis du pied rapporté dans le cas (a), avant la seule mise en place du pied rapporté dans le dernier cas (c), les moyens de distribution étant déjà fixés par sertissage. Le remplissage par l'orifice supérieur du dôme est nécessaire ou habituel dans tous les autres cas, il peut être pratiqué aussi dans les cas précédents (a) et (c) après fixation du pied rapporté.Note that when the housing has an attached foot, the filling of the product can be done by the lower end of the body: before fitting the piston and then the attached foot in case (a), before the only fitting of the stand added in the latter case (c), the dispensing means being already fixed by crimping. Filling through the upper opening of the dome is necessary or usual in all other cases, it can also be practiced in the previous cases (a) and (c) after fixing the attached foot.

L'invention a enfin pour troisième objet le dôme annulaire lui-même, qui a une structure particulièrement adaptée à sa fixation sur le corps tubulaire et à la fixation des moyens de distribution du distributeur. Son extrémité supérieure annulaire est renflée extérieurement, formant une bague de sertissage, et sa portion d'extrémité inférieure est plus large et comporte une gorge annulaire ouverte, de profil en partie au moins semi-circulaire, permettant d'emboîter le bord roulé d'un boîtier. Son voile annulaire a une épaisseur minimale comprise entre 1,2 et 4 mm et est encadré par l'extrémité supérieure renflée et par la portion d'extrémité inférieure. La portion d'extrémité inférieure peut comporter, à la place d'une gorge, une jupe comportant une surface intérieure verticale annulaire qui permet d'emboîter, avec un jeu typiquement inférieur à 0,1 mm au diamètre, la portion annulaire rétreinte droite du corps tubulaire en matière plastique ou en métal revêtu extérieurement de matière plastique d'un boîtier, pour sa liaison étanche à cette portion d'extrémité par collage ou par soudage (typiquement par induction, ultrasons ou rotation). Le dôme annulaire a de façon typique une épaisseur minimale de valeur annulaire comprise entre 1,5 et 3 mm, et de préférence entre 1,7 et 2,5 mm, et est en l'une des matières plastiques indiquées précédemment, le choix du polyéthylène conduisant à choisir de préférence ses variétés à haute ou moyenne densité.The third object of the invention is finally the annular dome itself, which has a structure particularly suitable for its attachment to the tubular body and for the attachment of the dispenser distribution means. Its upper annular end is swollen externally, forming a crimping ring, and its lower end portion is wider and has an open annular groove, of profile at least partially semicircular, allowing the rolled edge to be fitted a housing. Its annular veil has a minimum thickness of between 1.2 and 4 mm and is framed by the swollen upper end and by the lower end portion. The lower end portion may comprise, in place of a groove, a skirt comprising an annular vertical inner surface which makes it possible to fit, with a clearance typically less than 0.1 mm in diameter, the right narrowed annular portion of the tubular body of plastic or metal externally coated with plastic of a housing, for its tight connection to this end portion by gluing or welding (typically by induction, ultrasound or rotation). The annular dome typically has a minimum thickness of annular value of between 1.5 and 3 mm, and preferably between 1.7 and 2.5 mm, and is made of one of the plastics indicated above, the choice of polyethylene leading to preferably choose its varieties with high or medium density.

AVANTAGES DE L'INVENTIONADVANTAGES OF THE INVENTION

Ils sont résumés comme suit :
. faible rétreint du corps tubulaire métallique quel que soit le diamètre de fixation de la valve ou pompe, le dôme en matière plastique faisant l'essentiel de la réduction entre diamètre du corps tubulaire et ce diamètre de fixation;
. fabrication plus facile et plus économique du boîtier, que ce soit avec la solution filée ou avec les autres solutions décrites;
. standardisation du boîtier quand le diamètre de fixation de la valve varie, le dôme étant seul adapté;
. forte réduction de l'épaisseur de la paroi latérale du boîtier, typique­ment de 35 à 50% relatif;
. forte réduction des risques de corrosion à l'endroit des fixations étanches, des contacts locaux matière plastique/métal étant seuls possibles;
. simplicité et fiabilité des méthodes d'assemblage;
. simplicité de fabrication du boîtier métallique ou en matière plastique ou métal/plastique, en utilisant un pied rapporté spécial, dans le cas d'un distributeur à pompe.They are summarized as follows:
. small constriction of the metallic tubular body whatever the fixing diameter of the valve or pump, the plastic dome making the bulk of the reduction between the diameter of the tubular body and this fixing diameter;
. easier and more economical manufacturing of the box, whether with the extruded solution or with the other solutions described;
. standardization of the housing when the valve fixing diameter varies, the dome being the only suitable one;
. sharp reduction in the thickness of the side wall of the housing, typically from 35 to 50% relative;
. significant reduction in the risk of corrosion at the location of the waterproof fasteners, only local plastic / metal contacts being possible;
. simplicity and reliability of assembly methods;
. simple manufacturing of the metal or plastic or metal / plastic housing, using a special attached foot, in the case of a pump dispenser.

Tous ces avantages sont liés à la dissociation entre les rôles des divers éléments du distributeur opérée par l'invention. Le dôme résiste à la pression interne ou externe et opère la variation de diamètre entre boîtier et moyen de distribution. Le corps tubulaire du boîtier résiste à cette même pression, avec un fond monobloc ou rapporté. Les fixations étanches sont de préférence métal/plastique.All these advantages are linked to the dissociation between the roles of the various elements of the dispenser operated by the invention. The dome resists internal or external pressure and operates the diameter variation between the housing and the distribution means. The tubular body of the housing resists this same pressure, with a monobloc or attached bottom. The waterproof fixings are preferably metal / plastic.

EXEMPLESEXAMPLES

  • . La figure 1 représente un corps de distributeur selon l'invention, en coupe axiale.. Figure 1 shows a dispenser body according to the invention, in axial section.
  • . La figure 2 représente un distributeur à pompe obtenu à partir d'un corps de distributeur du même type, en coupe axiale.. FIG. 2 represents a pump distributor obtained from a distributor body of the same type, in axial section.
  • La figure 3 représente un distributeur à pompe à piston glissant obtenu à partir d'un autre corps préassemblé, les moyens de distribution n'étant pas coupés et le corps du distributeur étant représenté selon deux demi-­coupes axiales : à droite dans l'état rempli et à gauche dans l'état vidé en fin d'utilisation.FIG. 3 represents a distributor with a sliding piston pump obtained from another pre-assembled body, the distribution means not being cut and the body of the distributor being represented in two axial half-sections: on the right in the state filled and left in the emptied state at the end of use.
  • . Les figures 4 à 6 représentent différents modes d'assemblage étanche du boîtier et du dôme du corps de distributeur, en demi-coupe axiale.. Figures 4 to 6 show different sealed assembly modes of the housing and the dome of the distributor body, in axial half-section.
  • . La figure 7 représente un corps de distributeur, dont le dôme est muni sur sa face envers d'un insert formant barrière pour les parfums, en demi-­coupe axiale.. FIG. 7 shows a dispenser body, the dome of which is provided on its reverse side with an insert forming a barrier for perfumes, in axial half-section.
  • . La figure 8 représente l'assemblage étanche d'un boîtier en matière plastique et d'un dôme, en demi-coupe axiale, ainsi que le cas où ce boîtier est métallique.. Figure 8 shows the sealed assembly of a plastic housing and a dome, in axial half-section, as well as the case where this housing is metallic.
  • . La figure 9 représente l'assemblage d'un autre boîtier en matière plasti­que et d'un dôme, en demi-coupe axiale.. Figure 9 shows the assembly of another plastic housing and a dome, in axial half-section.
  • . La figure 10 représente le bas d'un boîtier muni d'un pied rapporté spécial, en demi-coupe axiale.. Figure 10 shows the bottom of a housing with a special attached foot, in axial half-section.
  • . La figure 11 représente un dôme à ouverture de sortie latérale, en coupe axiale.. FIG. 11 represents a dome with lateral outlet opening, in axial section.
Exemple 1Example 1

La pièce (dôme+boîtier) 1 ou corps de distributeur 1 de la figure 1 comprend un dôme 2 en polyéthylène haute densité (PE.HD) et un boîtier 3 en alliage d'aluminium à fond 4 monobloc obtenu par emboutissage-étirage.
Le dôme 2 comprend à son extrémité supérieure un renflement extérieur 7 de diamètre extérieur 20 mm constituant une bague de sertissage 7 des moyens de distribution. Il comprend encore au-dessous de cette bague 7 un voile 8 d'épaisseur 2,3mm sensiblement constante puis une portion circu­laire inférieure élargie 9, de diamètre extérieur 45 mm et de diamètre intérieur 39 mm, comportant à son extrémité une gorge circulaire ouverte 10 de profil hémi-circulaire de rayon 1,5mm en section axiale et de diamètre moyen 42mm. La hauteur totale du dôme 2 est de 18mm.
Le boîtier 3 a une épaisseur de corps cylindrique 5 de 0,25mm et une ouver­ture 11 rétreinte de diamètre 36,5mm surmontée d'un bord roulé 12 sur environ 150° de rayon extérieur 1,3mm. La fixation du dôme 2 au bord roulé 12 a été faite par oxydation de surface de la gorge circulaire 10 du dôme 2 (traitement Corona) et collage à la colle cyanoacrylate de cette gorge 10 emboîtée sur le bord roulé 12 et maintenue en appui un peu plus de 30 secondes pendant le séchage de la colle. La technique de collage employée résulte d'essais décrits ci-après.The part (dome + housing) 1 or distributor body 1 of FIG. 1 comprises a dome 2 made of high density polyethylene (PE.HD) and a housing 3 made of aluminum alloy with a 4-piece base obtained by stamping-drawing.
The dome 2 comprises at its upper end an external bulge 7 of external diameter 20 mm constituting a crimping ring 7 of the distribution means. It further comprises below this ring 7 a veil 8 of 2.3mm thickness which is substantially constant, then an enlarged lower circular portion 9, of external diameter 45 mm and internal diameter 39 mm, comprising at its end an open circular groove 10 of semi-circular profile with a radius of 1.5mm in axial section and an average diameter of 42mm. The total height of dome 2 is 18mm.
The housing 3 has a thickness of cylindrical body 5 of 0.25 mm and a constricted opening 11 of diameter 36.5 mm surmounted by a rolled edge 12 over approximately 150 ° of external radius 1.3 mm. The fixing of the dome 2 to the rolled edge 12 was made by surface oxidation of the circular groove 10 of the dome 2 (Corona treatment) and bonding with cyanoacrylate glue of this groove 10 fitted on the rolled edge 12 and held in a little support more than 30 seconds while the glue is drying. The bonding technique used is the result of tests described below.

D'autres méthodes connues de traitement de surface de la gorge en matière plastique 10 peuvent être employées, par exemple un traitement à la flamme ou avec une électrode de forme (effet Corona).Other known methods for treating the surface of the plastic groove 10 can be used, for example a flame treatment or with a shaped electrode (Corona effect).

Le boîtier 3 est destiné à une application aérosol et son fond 4 comporte un orifice d'introduction d'un gaz propulseur sous pression et un bouchon 13 de bouchage étanche de cet orifice.The housing 3 is intended for an aerosol application and its bottom 4 comprises an orifice for introducing a pressurized propellant gas and a plug 13 for sealing off this orifice.

Essais de collageBonding tests

La disposition précédente (figure 1) a fait l'objet d'un ensemble d'essais de collage, concernant des dômes de différentes matières :
. PA 12 (= Rilsan ®)
. PA 6 (= Nylon ®)
. PE-HD
. PE linéaire
ces dômes étant collés sur des bords roulés d'extrémité supérieure de boîtiers en alliage d'aluminium, avec des familles de colle :
une colle silicone "Rhodorseal 5552" ( (R))
. 3 colles cyanoacrylate :
n° 406 Loctite ( ®)
n° 202 Cyanolit ( ®)
n° 208 Cyanolit ( ®).The previous arrangement (Figure 1) was the subject of a set of bonding tests, concerning domes of different materials:
. PA 12 (= Rilsan ®)
. PA 6 (= Nylon ®)
. PE-HD
. Linear PE
these domes being glued to the rolled edges of the upper end of aluminum alloy housings, with families of glue:
a silicone adhesive "Rhodorseal 5552" ((R))
. 3 cyanoacrylate adhesives:
n ° 406 Loctite (®)
n ° 202 Cyanolit (®)
No. 208 Cyanolit (®).

Les observations effectuées peuvent être résumées comme suit : les surfaces en matière plastique doivent être de préférence préparées par oxydation superficielle telle que flammage ou effet Corona, et les surfaces en aluminium doivent de préférence être préalablement vernies, ces colles ne donnant pas une adhésion satisfaisante sur l'aluminium nu. La colle au silicone nécessite des temps de pressage de 1 à 2 min et des temps de séchage à l'ambiante supérieurs à 24 h. Les trois colles cyanoacrylate donnent des résultats voisins : les temps de pressage peuvent être limités à 5 à 10 secondes, et les pièces peuvent être manipulées après 30 secondes à 1 minute à la température ambiante. Ces colles cyanoacrylate sont donc bien préférables pour l'application industrielle.The observations made can be summarized as follows: the plastic surfaces must preferably be prepared by surface oxidation such as flame or Corona effect, and the aluminum surfaces must preferably be previously varnished, these adhesives do not give not a satisfactory adhesion on bare aluminum. Silicone glue requires pressing times of 1 to 2 min and ambient drying times greater than 24 h. The three cyanoacrylate adhesives give similar results: the pressing times can be limited to 5 to 10 seconds, and the parts can be handled after 30 seconds to 1 minute at room temperature. These cyanoacrylate adhesives are therefore much preferable for industrial application.

Exemple 2Example 2

Un corps de distributeur 100, identique au corps 1 de la figure 1 à l'excep­tion du fond 40 de son boîtier 53 qui est étanche, a été utilisé pour fabriquer un distributeur à pompe 14 (figure 2). On a pour cela serti avec un joint d'étanchéité 150 la coupelle métallique de fixation 15 de la pompe 16, qui est ici surmontée d'un diffuseur 17 sur l'extrémité supé­rieure renflée 7 du dôme 2. Cette pompe 16 est ici une pompe sans retour d'air, c'està-dire sans communication entre l'intérieur et l'extérieur du récipient comme connu par les documents EP-A-0143183 et EP-A-0251863, ce qui permet une bonne conservation du produit contenu. Pour obtenir une distribution satisfaisante du liquide ou de la crème qui est contenue dans le distributeur, la tubulure d'entrée de la pompe 16 est munie d'un tube plongeur 43 descendant jusque vers le fond 40 du boîtier 53, le plein initial du produit contenu étant limité à 70% du volume intérieur.
En effet, des essais ont montré que, avec des pleins de 80% et plus, les pompes sans retour d'air utilisées ne fonctionnent pas de façon satisfai­sante, et que avec des pleins de 70%, le fonctionnement était toujours satisfaisant. Ces essais permettent de conclure qu'un maximum de remplissage de 75% doit être respecté dans le champ d'application de la présente invention (capacités typiquement inférieures à 1 litre) pour obtenir des distributions sans incident, les remplissages préférés étant de 60 à 75%.A distributor body 100, identical to the body 1 of FIG. 1 with the exception of the bottom 40 of its housing 53 which is sealed, was used to manufacture a pump distributor 14 (FIG. 2). For this, the metal fixing cup 15 of the pump 16 was crimped with a seal 150, which is here surmounted by a diffuser 17 on the bulged upper end 7 of the dome 2. This pump 16 is here a pump without air return, that is to say without communication between the interior and the exterior of the container as known from documents EP-A-0143183 and EP-A-0251863, which allows good conservation of the product contained. To obtain a satisfactory distribution of the liquid or the cream which is contained in the dispenser, the inlet pipe of the pump 16 is provided with a dip tube 43 descending towards the bottom 40 of the housing 53, the initial filling of the product content being limited to 70% of the interior volume.
In fact, tests have shown that, with full 80% and more, the pumps without air return used do not work satisfactorily, and that with full 70%, the operation was always satisfactory. These tests make it possible to conclude that a maximum filling of 75% must be respected in the scope of the present invention (capacities typically less than 1 liter) to obtain distributions without incident, the preferred fillings being from 60 to 75 %.

Exemple 2 bisExample 2a

Un autre corps de distributeur, identique au corps 100 du deuxième exemple est utilisé pour obtenir un distributeur 14′ de produit aérosol selon la modification suivante (fig. 2) : la pompe 16 est remplacée par une valve 16′ pour aérosol fixée sur l'extrémité renflée 7 du dôme 2 par sertis­sage de sa coupelle de fixation qui est semblable à la coupelle 15 de la pompe. Le corps de distributeur 100 peut ainsi avoir, tel qu'il est, deux types d'usage.Another dispenser body, identical to the body 100 of the second example, is used to obtain a dispenser 14 ′ of aerosol product according to the following modification (fig. 2): the pump 16 is replaced by a valve 16 ′ for aerosol attached to the bulged end 7 of the dome 2 by crimping its fixing cup which is similar to the cup 15 of the pump. The distributor body 100 can thus have, as it is, two types of use.

Exemple 3Example 3

On a pris une ébauche de boîtier 44 emboutie-étirée identique à celle utilisée pour le boîtier 3 de la figure 1, de diamètre extérieur 45 mm et ayant sur son fond 4 monobloc un orifice traversant 130 servant ici de passage d'air pour l'utilisation. On a introduit par le haut de cette ébauche de boîtier 44 un piston glissant 45 et on l'a repoussé jusqu'au fond 4 de cette ébauche 44. La face supérieure de ce piston 45 comporte un puits 46 enveloppant d'assez près la pompe 16 en fin d'utilisation, assurant un bon vidage de liquide. Le piston 45 étant ainsi introduit, on a rétreint l'extrémité supérieure de l'ébauche 44 en une portion cylindri­que circulaire 47 de diamètre 40 mm et de hauteur 10 mm, obtenant le boîtier 440 utilisé pour le corps préassemblé 200.
On a par ailleurs préparé par moulage un dôme annulaire 122 en PA12, dont l'extrémité supérieure 7 ainsi que l'épaisseur et l'inclinaison du voile annulaire 8 sont géométriquement semblables à celles du dôme 2 des figures 1 et 2, et dont la portion inférieure de fixation 48 consiste en une jupe circulaire droite d'extrémité 48 dont la surface cylindrique intérieure 49 de diamètre 40,1 mm s'emboîte avec un faible jeu autour de l'extrémité rétreinte 47 du boîtier 440.
On a ensuite collé à la colle cyanoacrylate le dôme 122 sur l'extrémité rétreinte 47 du boîtier, selon la technique décrite dans l'Exemple 1, obtenant le corps de distributeur préassemblé 200.
Après remplissage avec de l'eau, on a fixé par sertissage sur l'extrémité 7 du dôme 122 une pompe sans retour d'air 16 identique à celle de la figure 2, comme dans l'Exemple 2. Cette pompe 16 est du type "VP7" des Etablisse­ments VALOIS (France).
Le vidage du distributeur obtenu 140 par actionnement de la pompe 16 en agissant sur le diffuseur 17 qui la surmonte a été obtenu sans aucune difficulté, la découpe du distributeur 140 vidé a permis de constater la position finale du piston glissant 45, dont l'avant 50 s'emboîte avec un jeu faible à l'intérieur du rétreint 47 et du voile 8 du dôme 122 et enveloppe la pompe 16, procurant un vidage à mieux que 97%.We took a blank 44 stamped-drawn case identical to that used for the housing 3 of Figure 1, with an external diameter 45 mm and having on its bottom 4 one piece a through hole 130 here serving as air passage for use. A sliding piston 45 was introduced from the top of this housing blank 44 and it was pushed back to the bottom 4 of this blank 44. The upper face of this piston 45 has a well 46 enveloping the pump fairly closely. 16 at the end of use, ensuring good emptying of liquid. With the piston 45 thus introduced, the upper end of the blank 44 has been narrowed into a circular cylindrical portion 47 with a diameter of 40 mm and a height of 10 mm, obtaining the housing 440 used for the preassembled body 200.
In addition, an annular dome 122 made of PA12 was prepared by molding, the upper end 7 of which, as well as the thickness and the inclination of the annular veil 8, are geometrically similar to those of the dome 2 in FIGS. 1 and 2, and the lower fixing portion 48 consists of a straight circular end skirt 48, the inner cylindrical surface 49 of diameter 40.1 mm fits with a slight clearance around the constricted end 47 of the housing 440.
The dome 122 was then glued with cyanoacrylate adhesive on the constricted end 47 of the housing, according to the technique described in Example 1, obtaining the preassembled distributor body 200.
After filling with water, a non-return pump 16 identical to that of FIG. 2 was fixed by crimping to the end 7 of the dome 122, as in Example 2. This pump 16 is of the type "VP7" from ESTABLISHMENTS VALOIS (France).
The emptying of the distributor obtained 140 by actuation of the pump 16 by acting on the diffuser 17 which overcomes it was obtained without any difficulty, the cutting of the distributor 140 emptied made it possible to note the final position of the sliding piston 45, the front of which 50 fits with a slight clearance inside the constriction 47 and the veil 8 of the dome 122 and envelops the pump 16, providing emptying better than 97%.

Exemples 4 à 6Examples 4 to 6

Diverses méthodes sont utilisables en fabrication de série pour la fixation du dôme 2 au boîtier 3. Les méthodes qui concernent les boîtiers métalli­ques, typiquement en aluminium ou en fer-blanc d'épaisseur 0,2mm à 0,6mm, les distributeurs étant pressurisés ou non, sont commentés ci-après en relation avec les figures 3 à 5.
. La figure 4 représente la fixation d'un dôme 2 de même géométrie que dans les trois premiers exemples, sur un boîtier identique au boîtier de la figure 1 à l'aide d'une pièce annulaire de liaison 18 compatible à la fois avec la matière plastique du dôme 2 -ici du PE.HD- et le métal du boîtier 3 -ici de 1'aluminium faiblement allié-. Cette pièce 18 d'épais­seur 0,2mm est en complexe contenant la même polyoléfine que celle du dôme 2, c'est-à-dire du PE, et de l'EAA; son bord extérieur est encliqueté sur l'extrémité du bord roulé 12, et après la mise en place du dôme 2 venant s'appliquer par sa gorge circulaire 10 sur la pièce de liaison 18, le soudage est effectué par l'une des méthodes suivantes : par induction haute fréquence, par rotation, ou encore par ultrasons en modifiant la forme du dôme pour l'appui du transducteur ultrasonore.
. Sur la figure 5 on voit que le dôme 2, mis en place par sa gorge circulai­re 10 sur le bord roulé 12 du boîtier 3, a une extrémité de gorge circulai­re 10 dépassant d'environ 1 mm l'extrémité du bord roulé 12, sans obstruer l'intérieur de ce bord roulé 12. Par injection annulaire de matière plastique de même nature que celle du dôme, ici du PE, on remplit au moins partiellement la cavité intérieure du bord roulé 12 en faisant fondre partiellement la jupe extérieure 19 du dôme 2 bordant l'extrémité de la gorge circulaire 10, cette jupe 19 ayant à cet endroit 1 mm d'épais­seur. On obtient une liaison soudée étanche de bonne qualité qui prolonge la jupe 19. De façon générale, l'extrémité 19 du dôme 2 ainsi solidarisée par le moulage doit venir au voisinage de l'extrémité du bord roule, soit moins de 0,5 mm avant cette extrémité ou un peu plus loin laissant au moins 1mm de passage vers l'intérieur du bord roulé 12.
. Le mode de fixation de la figure 6 utilise une pièce annulaire de forme 20 en matière plastique de même nature que celle du dôme 2, dont le haut n'est pas représenté, cette pièce 20 étant mise en place sur l'épaule ou portion rétreinte 21 du boîtier située avant le roulage de son bord d'extrémité. Cette pièce 20, ici en PE comme le dôme 2, comporte une base 22 s'appuyant sur cette épaule 21 du boîtier 3, une portion supérieu­re 23 qui va être sertie comme représenté par le roulage 12 du bord d'extrémité supérieure du boîtier 3, ainsi que une ou plusieurs surfaces, ici les deux surfaces verticale 24 et horizontale 25, venant au contact de la jupe extérieure 26 du dôme 2. Les mises en place de la pièce de forme 20, du bord roulé 12 et du dôme 2 étant faites, la fixation étanche est effectuée par soudage par rotation des portées annulaires 24 et 25 contre la portion annulaire 26 du dôme 2. La fixation peut aussi être faite en soudage par induction HF ou par ultrasons.Various methods can be used in series production for fixing the dome 2 to the housing 3. The methods which relate to metal housings, typically aluminum or tinplate of thickness 0.2mm to 0.6mm, the distributors being pressurized or no, are commented below in relation to FIGS. 3 to 5.
. FIG. 4 represents the fixing of a dome 2 of the same geometry as in the first three examples, on a housing identical to the housing of FIG. 1 using an annular connecting piece 18 compatible both with the material plastic of dome 2 - here of PE.HD - and the metal of housing 3 - here of low alloy aluminum -. This piece 18 of 0.2mm thickness is in complex containing the same polyolefin as that of the dome 2, that is to say of the PE, and of the EAA; its outer edge is snapped onto the end of the rolled edge 12, and after the positioning of the dome 2 which is applied by its circular groove 10 to the connecting piece 18, the welding is carried out by one of the following methods : by high frequency induction, by rotation, or by ultrasound by modifying the shape of the dome to support the ultrasonic transducer.
. In Figure 5 we see that the dome 2, set up by its circular groove 10 on the rolled edge 12 of the housing 3, has a circular groove end 10 projecting by about 1 mm from the end of the rolled edge 12, without obstruct the interior of this rolled edge 12. By annular injection of plastic material of the same kind as that of the dome, here of PE, the interior cavity of the rolled edge 12 is at least partially filled by partially melting the outer skirt 19 of the dome 2 bordering the end of the circular groove 10, this skirt 19 having at this location 1 mm thick. A good quality sealed welded connection is obtained which extends the skirt 19. In general, the end 19 of the dome 2 thus secured by the molding must come near the end of the rolled edge, ie less than 0.5 mm. before this end or a little further leaving at least 1mm of passage towards the inside of the rolled edge 12.
. The fixing method of FIG. 6 uses an annular piece of plastic shape 20 of the same kind as that of the dome 2, the top of which is not shown, this piece 20 being placed on the shoulder or constricted portion 21 of the housing located before rolling its end edge. This part 20, here in PE like the dome 2, has a base 22 resting on this shoulder 21 of the housing 3, an upper portion 23 which will be crimped as shown by the rolling 12 of the upper end edge of the housing 3 , as well as one or more surfaces, here the two vertical 24 and horizontal 25 surfaces, coming into contact with the outer skirt 26 of the dome 2. The positioning of the shaped part 20, the rolled edge 12 and the dome 2 being made, waterproof fixing is carried out by welding by rotation of the annular surfaces 24 and 25 against the annular portion 26 of the dome 2. The fixing can also be made by welding by HF induction or by ultrasound.

Exemple 7Example 7

Avant sa fixation sur un boîtier 3, le dôme 102 (fig.7) de même géométrie que les dômes 2 précédents, a été muni lors de son moulage d'une rondelle annulaire 27 à effet barrière. Cette rondelle 27 est soudée à la face envers 28 du dôme 102 par une grande face 29 et retenue à sa base par un petit bourrelet annulaire de matière plastique 30. Elle a en général des couches de surface en polyoléfine compatible avec la polyoléfine du dôme et une couche intermédiaire en Al ou en matière plastique barrière. On a utilisé ici pour la rondelle 27 un complexe métalloplastique d'épais­seur 0,28mm comprenant 5 couches, soit 2 couches extérieures en PE-BD chacune d'épaisseur 90 µm, encadrant 2 couches intermédiaires de 30 µm en adhésif copolymère à base d'EAA avec une couche centrale d'aluminium d'épaisseur 40 µm.Before its attachment to a housing 3, the dome 102 (fig. 7) of the same geometry as the previous domes 2, was fitted during its molding with an annular washer 27 with a barrier effect. This washer 27 is welded to the reverse face 28 of the dome 102 by a large face 29 and retained at its base by a small annular bead of plastic material 30. It generally has surface layers of polyolefin compatible with the polyolefin of the dome and an intermediate layer of Al or barrier plastic. For the washer 27, a 0.28 mm thick metalloplastic complex was used here comprising 5 layers, ie 2 outer layers of PE-BD each of 90 μm thickness, framing 2 intermediate layers of 30 μm in copolymer adhesive based on EAA with a central layer of aluminum 40 µm thick.

Exemple 8 (fig.8) Example 8 (fig. 8 )

Le boîtier 103 de la figure 8 est en matière plastique, ici du PE-HD d'épais­seur 0,6 mm dans sa partie cylindrique. Ce boîtier moulé 103 présente une extrémité supérieure cylindrique 110 de diamètre extérieur réduit 40mm, tandis que le dôme 112 comporte à son extrémité inférieure une jupe droite 113 dont la surface intérieure cylindrique de diamètre 39,8mm vient emboîter avec serrage l'extrémité 110. La fixation est alors faite en soudage par rotation (soudage par friction).
En variante, la fixation est faite par collage, la jupe droite 113 ayant un diamètre de 40,2mm et l'extrémité 110 comportant de préférence de légères dépressions de rétention de la colle, dépressions reliées entre elles par des creux formant ponts et de profondeur typique 0,03 à 0,08 mm.The housing 103 of FIG. 8 is made of plastic, here PE-HD 0.6 mm thick in its cylindrical part. This molded housing 103 has a cylindrical upper end 110 of reduced outside diameter 40mm, while the dome 112 has at its lower end a straight skirt 113 whose cylindrical inner surface of diameter 39.8mm fits tightly the end 110. The fixing is then done by rotary welding (friction welding).
As a variant, the fixing is made by gluing, the straight skirt 113 having a diameter of 40.2mm and the end 110 preferably comprising slight depressions in the retention of the adhesive, depressions connected together by hollows forming bridges and having a depth typical 0.03 to 0.08 mm.

Exemple 8 bis (fig.8) Example 8a (fig. 8 )

La même structure est utilisée pour la fixation d'un dôme en matière plasti­que 112 sur l'extrémité rétreinte 210 d'un boîtier métallique 203. Un anneau de liaison 118 de même nature que la pièce de liaison 18 de l'Exemple 4 (fig.4) est alors placé autour de l'extrémité 210 et le soudage est effectué typiquement par induction HF ou par rotation. Le diamètre intérieur de la jupe 113 du dôme 112 et l'épaisseur de l'anneau ou bracelet 118 sont choisis de façon à réaliser un léger serrage avant soudage.
Un collage est également possible, l'intérieur de la jupe en matière plasti­que 118 étant oxydé superficiellement au préalable et l'extérieur du boîtier 203 étant de préférence verni (voir essais de collage dans l'Exemple 1).The same structure is used for fixing a plastic dome 112 on the constricted end 210 of a metal case 203. A connecting ring 118 of the same kind as the connecting piece 18 of Example 4 (fig .4) is then placed around the end 210 and the welding is typically carried out by HF induction or by rotation. The inside diameter of the skirt 113 of the dome 112 and the thickness of the ring or bracelet 118 are chosen so as to slightly tighten them before welding.
Bonding is also possible, the interior of the plastic skirt 118 being surface-oxidized beforehand and the exterior of the housing 203 is preferably varnished (see bonding tests in Example 1).

Exemple 9Example 9

Le boîtier 104 de la figure 9 comme le boîtier 103 de l'Exemple 8 est en PE.HD d'épaisseur 0,6mm dans sa partie cylindrique. Ce boîtier moulé présente à son extrémité supérieure 116 une tubulure 111 de section axiale rectangulaire qui vient s'emboîter avec serrage entre la jupe intérieure 115 et la jupe extérieure 113 du dôme 1120, la tubulure 111 s'appliquant par son extrémité horizontale contre le fond de la rainure 114. La fixation est faite de préférence en soudage par rotation, elle peut aussi être réalisée par collage. La surface annulaire horizontale 119 et l'extrémité 117 de la jupe extérieure 113 du dôme 1120 peuvent également intervenir dans cette fixation. Dans le cas du soudage par rotation, la friction est favorisée par cette disposition, entraînant une bonne reproductibilité des résultats de l'étanchéité obtenue.The housing 104 of FIG. 9 like the housing 103 of Example 8 is made of HDPE 0.6 mm thick in its cylindrical part. This molded housing has at its upper end 116 a tube 111 of rectangular axial section which fits tightly between the inner skirt 115 and the outer skirt 113 of the dome 1120, the tube 111 being applied by its horizontal end against the bottom. of the groove 114. The fixing is preferably made by rotation welding, it can also be carried out by gluing. The horizontal annular surface 119 and the end 117 of the outer skirt 113 of the dome 1120 can also intervene in this fixing. In the case of rotary welding, friction is favored by this arrangement, resulting in good reproducibility of the results of the seal obtained.

Exemple 10Example 10

La figure 10 représente un boîtier métallique 33 sans fond monobloc, consis­tant donc en une portion de tube dont l'extrémité supérieure est rétreinte, munie à son extrémité inférieure d'un pied rapporté 31, la paroi latérale 32 de ce boîtier étant emboîtée avec forcement autour de la paroi tubulaire extérieure 34 d'un pied rapporté en PE.
Cette paroi extérieure 34 est reliée par son sommet 35 à une paroi intérieu­re 36 avec qui elle forme un pli annulaire 42 ouvert à sa base et souple, c'est-à-dire d'écartement modifiable pour toute portion de sa périphérie, la paroi intérieure 36 entourant un fond central 37 qui la prolonge de façon étanche et la paroi extérieure 34 étant entourée d'une bordure 38 facile à déformer transversalement et élastiquement en raison de sa faible largeur et de son épaisseur limitée.
Ce pied rapporté 31 utilisable pour d'autres types de récipients, joue le rôle de compensateur de diamètres et procure une bonne étanchéité pour des ovalisations correspondant à des différences de diamètres n'excédant pas le double de la largeur intérieure moyenne de son pli annulaire 42. Il tend à remettre au rond la paroi 32 du boîtier 33 lorsque cette paroi est semi-rigide. Le bord 38 est muni ici d'un rebord extérieur 39 qui permet de protéger l'extrémité inférieure de la paroi latérale 32 du boîtier 33. Ce rebord 39 porte un relief annulaire intérieur 41 qui retient l'extré­mité légèrement évasée de la paroi 32. Et cette paroi 32 serre sur une certaine hauteur la paroi extérieure 34 du pied 31. La disposition ainsi obtenue se prête facilement à un collage créant une fixation définitive, elle est particulièrement adaptée à des distributeurs munis d'une pompe sans retour d'air ou à faible reprise d'air, travaillant en dépression intérieure du distributeur.
Le pied rapporté 31 à pli annulaire déformable 42 a une épaisseur de 1mm et les dimensions suivantes :
- diamètres intérieur et extérieur de l'intérieur de son pli annulaire 42 : 47,5 et 50,5 mm;
- largeur du dessous de sa bordure 38 : 3mm;
- diamètre de la portion inférieure verticale de hauteur 7mm de la paroi extérieure 34 du pied = 52,5mm; diamètre d'extrémité de la portion supé­rieure chanfreinée (hauteur 3mm) = 50mm;
- hauteur extérieure du rebord 39 = 2mm.FIG. 10 represents a metal case 33 without a monobloc bottom, therefore consisting of a portion of tube whose upper end is constricted, provided at its lower end with an attached foot 31, the side wall 32 of this case being nested around the outer tubular wall 34 of a foot made of PE.
This outer wall 34 is connected by its apex 35 to an inner wall 36 with which it forms an annular fold 42 open at its base and flexible, that is to say of modifiable spacing for any portion of its periphery, the wall inner 36 surrounding a central bottom 37 which extends it in a sealed manner and the outer wall 34 being surrounded by an edge 38 which is easy to deform transversely and elastically due to its small width and limited thickness.
This added foot 31 usable for other types of containers, acts as a diameter compensator and provides a good seal for ovalizations corresponding to differences in diameters not exceeding twice the average interior width of its annular fold 42 It tends to return the wall 32 of the housing 33 to the round when this wall is semi-rigid. The edge 38 is provided here with an outer rim 39 which makes it possible to protect the lower end of the side wall 32 of the housing 33. This rim 39 carries an inner annular relief 41 which retains the slightly flared end of the wall 32. And this wall 32 clamps the outer wall 34 of the foot 31 to a certain height. The arrangement thus obtained easily lends itself to bonding. creating a final fixing, it is particularly suitable for distributors fitted with a pump without air return or with low air intake, working in the internal depression of the distributor.
The added foot 31 with a deformable annular fold 42 has a thickness of 1 mm and the following dimensions:
- inside and outside diameters of the inside of its annular fold 42: 47.5 and 50.5 mm;
- width of the underside of its border 38: 3mm;
- diameter of the vertical lower portion of height 7mm from the outer wall 34 of the foot = 52.5mm; end diameter of the chamfered upper portion (height 3mm) = 50mm;
- outside height of edge 39 = 2mm.

Le boîtier 33 équipé du pied rapporté 31 a été utilisé dans un distributeur à pompe sans retour d'air, dans lequel l'entrée de la pompe était munie d'un tube plongeant, le volume de remplissage étant de 70% du volume intérieur. Le vidage par dépression n'impose pas une fixation par collage, celle-­ci étant toutefois préférable pour la sécurité de la fixation et pour l'inviolabilité du récipient.The housing 33 fitted with the attached foot 31 was used in a pump distributor without air return, in which the pump inlet was provided with a dip tube, the filling volume being 70% of the interior volume. Emptying by vacuum does not require fixing by gluing, this being however preferable for the security of the fixing and for the inviolability of the container.

On peut également utiliser un pied rapporté tel que 31 muni d'un orifice de passage d'air, le pied étant mis en place après introduction d'un piston glissant dans le boîtier sans fond de nature quelconque, le moyen de distribu­tion étant également une pompe sans retour d'air. Le remplissage du distribu­teur est alors typiquement fait par l'ouverture supérieure du dôme avant fixation de la pompe par sertissage sur ce dôme, mais il est également possible de le faire par le bas du boîtier avant insertion du piston glis­sant et de préférence fixation du pied rapporté laissant passer l'air.It is also possible to use an attached foot such as 31 provided with an air passage orifice, the foot being put in place after introduction of a sliding piston in the bottomless housing of any kind, the distribution means also being a pump without air return. The filling of the dispenser is then typically done by the upper opening of the dome before fixing the pump by crimping on this dome, but it is also possible to do it from the bottom of the housing before insertion of the sliding piston and preferably fixing the foot. reported allowing air to pass through.

Exemple 11Example 11

La figure 11 donne un exemple des dispositions de distributeurs qui peuvent être obtenues avec un dôme en matière plastique. Le dôme schématisé 212 a une ouverture de sortie et une bague de fixation 207 des moyens de distri­butions d'axe 201 latéral, ici à environ 90° de l'axe 202 de symétrie de la gorge 210 de fixation du dôme 212 sur un boîtier. Le voile 208 de ce dôme est fortement dissymétrique.FIG. 11 gives an example of the distributor arrangements which can be obtained with a plastic dome. The schematic dome 212 has an outlet opening and a fixing ring 207 for the means of distribution of axis 201 lateral, here at about 90 ° from the axis 202 of symmetry of the groove 210 for fixing the dome 212 to a housing. The veil 208 of this dome is highly asymmetrical.

APPLICATIONSAPPLICATIONS

L'invention s'applique dans les domaines cosmétologique, pharmaceutique, hygiénique et alimentaire, pour le stockage et la distribution de produits liquides ou crémeux.The invention applies in the cosmetic, pharmaceutical, hygienic and food fields, for the storage and distribution of liquid or creamy products.

Claims (27)

1. Corps de distributeur (1;100;200) consistant en un boîtier (3; 53; 440; 103;-203;104;33) qui comporte un fond (4;40;37) et une paroi latérale (5; 32;) et en un dôme (2;122;102;112;1120;212) fixé de façon étanche à l'extrémité supérieure de ladite paroi latérale (5;32) du boîtier, caractérisé en ce que ce dôme (2;122;102;112;1120;212) est rigide et en matière plastique et comporte un voile annulaire (8; 208) d'épaisseur minimale comprise entre 1,2 et 4 mm ainsi que deux portions annulaires inférieure et supérieure (9 et 7; 48 et 7;19;26;113;115;207 et 210) permettant la fixation étanche de ce dôme respectivement sur ladite paroi latérale (3,5) du boîtier par emboîtage axial direct, et à des moyens de distribution (15 et 16), lesdites portions de fixation prolongeant et encadrant ledit voile annulaire (8; 208).1. Distributor body (1; 100; 200) consisting of a housing (3; 53; 440; 103; -203; 104; 33) which has a bottom (4; 40; 37) and a side wall (5; 32;) and in a dome (2; 122; 102; 112; 1120; 212) fixed in sealed manner to the upper end of said side wall (5; 32) of the housing, characterized in that this dome (2; 122; 102; 112; 1120; 212) is rigid and made of plastic and has an annular veil (8; 208) of minimum thickness between 1.2 and 4 mm as well as two lower and upper annular portions (9 and 7 ; 48 and 7; 19; 26; 113; 115; 207 and 210) allowing the waterproof fixing of this dome respectively on said side wall (3,5) of the housing by direct axial fitting, and to distribution means (15 and 16), said fixing portions extending and framing said annular web (8; 208). 2. Corps de distributeur (1;100) selon la revendication 1, dont au moins la paroi latérale (3,5) du boîtier (3; 53) est métallique, cette paroi latérale comportant à son extrémité supérieure un bord roulé (12) et la portion de fixation (9) dudit dôme annulaire (2; 102) sur ladite paroi (3,5) comportant une gorge annulaire (10) fixée de façon étanche audit bord roulé (12).2. Dispenser body (1; 100) according to claim 1, at least the side wall (3,5) of the housing (3; 53) is metallic, this side wall having at its upper end a rolled edge (12) and the fixing portion (9) of said annular dome (2; 102) on said wall (3,5) having an annular groove (10) fixed in sealed manner to said rolled edge (12). 3. Corps de distributeur (1;100) selon la revendication 2, dans lequel ledit dôme (2) est collé par sa dite gorge annulaire (10) audit bord roulé (12).3. Dispenser body (1; 100) according to claim 2, wherein said dome (2) is glued by its said annular groove (10) to said rolled edge (12). 4. Corps de distribution (1) selon la revendication 2, dans lequel ladite gorge annulaire (10) du dôme (3) est fixée audit bord roulé (12) par une pièce intermédiaire en matière plastique (18) soudée aux surfaces respectives de ladite gorge (10) et dudit bord roulé (12).4. Dispensing body (1) according to claim 2, wherein said annular groove (10) of the dome (3) is fixed to said rolled edge (12) by an intermediate piece of plastic (18) welded to the respective surfaces of said groove (10) and said rolled edge (12). 5. Corps de distributeur (1) selon la revendication 4, dont la paroi latérale (3) au moins est en aluminium ou alliage et dont le dôme annulaire (2) est en polyoléfine, ladite pièce intermédiaire (18) étant en matière plastique contenant de l'EAA et ladite polyoléfine.5. Dispenser body (1) according to claim 4, the side wall (3) of which is at least made of aluminum or alloy and the annular dome (2) of which is made of polyolefin, said intermediate piece (18) being made of plastic material containing EAA and said polyolefin. 6. Corps de distributeur (1) selon la revendication 2, dans lequel la jupe extérieure (19) bordant ladite gorge circulaire (10) dudit dôme (2) se continue par un prolongement en matière plastique pénétrant à l'intérieur du bord roulé (12) du boîtier (3) et solidarisant de façon étanche ledit dôme (2) et ledit bord roulé (1).6. distributor body (1) according to claim 2, wherein the outer skirt (19) bordering said circular groove (10) of said dome (2) is continued by an extension of plastic material penetrating inside from the rolled edge (12) of the housing (3) and sealingly joining said dome (2) and said rolled edge (1). 7. Corps de distributeur selon la revendication 2, comprenant une pièce annulaire (20) en matière plastique s'appuyant sur l'épaule (21) du rétreint (21) d'extrémité de la paroi latérale du boîtier (3), en-dessous dudit bord roulé (12) et emprisonnée par ledit bord roulé (12), ledit dôme (2) étant soudé autour de ladite pièce annulaire (20) par au moins une surface de jonction annulaire (24,25).7. Dispenser body according to claim 2, comprising an annular piece (20) of plastic material resting on the shoulder (21) of the neck (21) end of the side wall of the housing (3), en- below said rolled edge (12) and trapped by said rolled edge (12), said dome (2) being welded around said annular part (20) by at least one annular junction surface (24,25). 8. Corps de distributeur selon la revendication 1, dont au moins la paroi latérale du boîtier (103) est en matière plastique ou en métal revêtu extérieurement de matière plastique, cette paroi latérale comportant à son extrémité supérieure une portion annulaire rétreinte droite (110) liée à la surface intérieure d'une jupe d'extrémité inférieure (113) dudit dôme (112) par collage ou par soudage.8. Dispenser body according to claim 1, at least the lateral wall of the housing (103) of which is made of plastic or of metal coated externally with plastic, this lateral wall comprising at its upper end a straight narrowed annular portion (110). bonded to the interior surface of a lower end skirt (113) of said dome (112) by bonding or welding. 9. Corps de distributeur (1) selon l'une quelconque des revendications 1 à 8, dans lequel le dôme annulaire (2;102;112;212) est en une des matières du groupe formé par : les polyamides, les polycarbonates, les polyesters, le polyacétal, le polypropylène et le polyéthylène.9. Dispenser body (1) according to any one of claims 1 to 8, in which the annular dome (2; 102; 112; 212) is made of one of the materials of the group formed by: polyamides, polycarbonates, polyesters, polyacetal, polypropylene and polyethylene. 10. Corps de distributeur selon la revendication 9, dans lequel le voile annulaire (8;208) du dôme annulaire (2;102;112;212) a une épaisseur minimale comprise entre 1,5 et 3 mm et de préférence entre 1,7 et 2,5 mm.10. Distributor body according to claim 9, in which the annular veil (8; 208) of the annular dome (2; 102; 112; 212) has a minimum thickness of between 1.5 and 3 mm and preferably between 1, 7 and 2.5 mm. 11. Corps de distributeur selon l'une quelconque des revendications 1 à 8, dans lequel le voile annulaire (208) du dôme (212) est dissymétrique, l'ouverture (206) de son extrémité de fixation (207) aux moyens de distribu­tion étant orientée latéralement.11. Distributor body according to any one of claims 1 to 8, in which the annular web (208) of the dome (212) is asymmetrical, the opening (206) of its fixing end (207) to the distribution means. being oriented laterally. 12. Corps de distributeur (1;100;200) selon l'une quelconque des revendica­tions 1 à 7, dans lequel le boîtier (3;53;440;203) à paroi latérale métalli­que a l'une des structures suivantes : boîtier (3;53;440) à fond métallique monobloc filé ou embouti ou embouti-étiré, ou boîtier à fond métallique serti.12. Distributor body (1; 100; 200) according to any one of claims 1 to 7, in which the housing (3; 53; 440; 203) with metal side wall has one of the following structures: housing ( 3; 53; 440) with a monobloc metal bottom spun or stamped or stamped-drawn, or case with crimped metal bottom. 13. Corps de distributeur (1) selon la revendication 12, dont la paroi latérale (3,5) en aluminium ou alliage ou en fer blanc a un diamètre extérieur et une épaisseur satisfaisant aux correspondances suivantes :
. ⌀ 33mm à moins de 47mm : épaisseur 0,15 à 0,20 mm
. ⌀ 47mm à moins de 55mm : épaisseur 0,20 à 0,25 mm
.⌀ 55mm à 80 mm : épaisseur 0,25 à 0,35 mm.13. Distributor body (1) according to claim 12, the side wall (3,5) of aluminum or alloy or of tinplate has an outside diameter and a thickness satisfying the following correspondences:
. ⌀ 33mm to less than 47mm: thickness 0.15 to 0.20mm
. ⌀ 47mm to less than 55mm: thickness 0.20 to 0.25mm
.⌀ 55mm to 80 mm: thickness 0.25 to 0.35 mm. 14. Corps de distributeur selon l'une quelconque des revendications 1 à 8, dont la paroi latérale (32) du boîtier (33) est emboîtée avec forcement autour d'une paroi tubulaire extérieure déformable (34) transversalement de manière élastique d'un pied rapporté (31), ladite paroi (34) formant l'extérieur d'un pli annulaire (42) ouvert à sa base dont la paroi intérieure (36) se prolonge de façon étanche par un fond central (37), ladite paroi extérieure (34) étant prolongée par un bord annulaire extérieur (38) de faible largeur qui arrête et protège l'extrémité inférieure de ladite paroi latérale (32) du boîtier (33).14. Dispenser body according to any one of claims 1 to 8, the side wall (32) of the housing (33) is forcibly fitted around a deformable outer tubular wall (34) transversely elastically with a attached stand (31), said wall (34) forming the outside of an annular fold (42) open at its base, the inner wall (36) of which is tightly extended by a central bottom (37), said outer wall (34) being extended by an outer annular edge (38) of small width which stops and protects the lower end of said side wall (32) of the housing (33). 15. Corps de distributeur selon la revendication 14, dont le boîtier (33) comporte un piston qui coulisse de façon étanche dans ledit boîtier (33) dans lequel le fond central (37) du pied rapporté (31) comporte au moins un orifice traversant.15. Dispenser body according to claim 14, the housing (33) of which comprises a piston which slides in leaktight manner in the said housing (33) in which the central bottom (37) of the attached foot (31) comprises at least one through hole . 16. Corps de distributeur (200) selon l'une quelconque des revendications 1 à 7, dont le boîtier métallique ou en métal/plastique (440) comporte un fond monobloc (4) ainsi qu'un piston (45) coulissant de façon étanche à l'intérieur de ce boîtier (440) entre ledit fond (4) percé d'au moins un orifice traversant (130) et l'extrémité supérieure rétreinte (47) dudit boîtier (440).16. Distributor body (200) according to any one of claims 1 to 7, the metal or metal / plastic housing (440) of which has a monobloc bottom (4) and a piston (45) sliding in leaktight manner inside this housing (440) between said bottom (4) pierced with at least one through hole (130) and the narrowed upper end (47) of said housing (440). 17. Distributeur (14′) comprenant un corps (100) selon l'une quelconque des revendications 1 0 13 et une valve (16′) de distribution d'un produit aérosol fixée de façon étanche par sa collerette ou coupelle de fixation (15) sur la portion annulaire supérieure renflée extérieurement (7) dudit dôme annulaire (2), le boîtier (53) dudit corps ayant un fond étanche (40) monobloc ou serti.17. Dispenser (14 ′) comprising a body (100) according to any one of claims 1 0 13 and a valve (16 ′) for dispensing an aerosol product tightly fixed by its collar or fixing cup (15 ) on the outwardly inflated upper annular portion (7) of said annular dome (2), the housing (53) of said body having a sealed bottom (40) in one piece or crimped. 18. Distributeur comprenant un corps selon l'une quelconque des revendica­tions 1 à 11 et une pompe de distribution d'un liquide ou d'une crème fixée de façon étanche par sa collerette ou coupelle de fixation sur la portion annulaire supérieure renflée extérieurement du dôme annulaire surmontant ledit corps, le boîtier (33) dudit corps comprenant un piston qui glisse de façon étanche à l'intérieur de ce boîtier (33) et n'ayant pas de fond ou ayant un fond rapporté qui laisse passer l'air.18. Dispenser comprising a body according to any one of claims 1 to 11 and a pump for dispensing a liquid or a cream fixed in leaktight manner by its collar or fixing cup on the upper annular portion which is swollen on the outside of the annular dome surmounting said body, the case (33) of said body comprising a piston which slides in a sealed way inside this case (33) and having no bottom or having an attached bottom which lets air pass. 19. Distributeur (140) comprenant un corps (200) selon l'une quelconque des revendications 1 à 11 et une pompe (16) de distribution d'un liquide ou d'une crème fixée de façon étanche par sa collerette ou coupelle de fixation sur la portion annulaire supérieure renflée extérieurement (7) du dôme annulaire (2) surmontant ledit corps (200), le boîtier (440) dudit corps (200) étant métallique ou métalloplastique et ayant un fond monobloc (14) et une extrémité supérieure rétreinte (47) laissant passer l'air et comprenant un piston (45) qui glisse de façon étanche entre ledit fond (4) et ladite extrémité (47).19. Dispenser (140) comprising a body (200) according to any one of claims 1 to 11 and a pump (16) for dispensing a liquid or a cream tightly fixed by its collar or fixing cup on the externally swollen upper annular portion (7) of the annular dome (2) surmounting said body (200), the housing (440) of said body (200) being metallic or metalloplastic and having a monobloc bottom (14) and a narrowed upper end (47) allowing air to pass through and comprising a piston (45) which slides in leaktight manner between said bottom (4) and said end (47). 20. Distributeur (140) selon l'une quelconque des revendications 18 ou 19, dans lequel la pompe de distribution (16) est une pompe sans retour d'air.20. Distributor (140) according to any one of claims 18 or 19, wherein the distribution pump (16) is a pump without air return. 21. Distributeur (14) comprenant un corps (100) selon l'une quelconque des revendications 1 à 15 et une pompe (16) de distribution d'un liquide ou d'une crème fixée de façon étanche par sa collerette ou coupelle de fixation (15) sur la portion annulaire supérieure renflée extérieurement (7) du dôme annulaire (2) surmontant ledit corps (100), le boîtier (53) dudit corps (100) ayant un fond fixe étanche (40).21. Dispenser (14) comprising a body (100) according to any one of claims 1 to 15 and a pump (16) for dispensing a liquid or a cream fixed in a sealed manner by its collar or fixing cup (15) on the outwardly swollen upper annular portion (7) of the annular dome (2) surmounting said body (100), the housing (53) of said body (100) having a fixed fixed bottom (40). 22. Distributeur (14) selon la revendication 21 dans lequel la pompe est une pompe sans retour d'air (16) dont l'orifice d'aspiration est muni d'un tube plongeur (43).22. Distributor (14) according to claim 21 wherein the pump is a pump without air return (16) whose suction port is provided with a dip tube (43). 23. Distributeur (14) selon la revendication 22 dans son état de livraison après remplissage, le liquide ou la crème qu'il contient occupant 60 à 75% de son volume intérieur.23. Dispenser (14) according to claim 22 in its delivery state after filling, the liquid or the cream that it contains occupying 60 to 75% of its interior volume. 24. Dôme annulaire (2) en matière plastique comportant un voile annulaire (8) d'épaisseur minimale comprise entre 1,2 et 4mm encadré par une extrémité supérieure annulaire (8) renflée extérieurement et une portion d'extrémité inférieure plus large comportant une gorge annulaire (10) de profil en partie au moins semi-circulaire permettant d'emboîter le bord roulé (12) d'un boîtier (3).24. Annular dome (2) of plastic material comprising an annular veil (8) of minimum thickness between 1.2 and 4 mm framed by an annular upper end (8) swollen externally and an end portion wider lower comprising an annular groove (10) of at least semi-circular profile allowing to fit the rolled edge (12) of a housing (3). 25. Dôme annulaire en matière plastique (112) comportant un voile annulaire d'épaisseur minimale comprise entre 1,2 et 4mm encadré par une extrémité supérieure annulaire renflée extérieurement et une jupe d'extrémité inférieure plus large (113) comportant une surface intérieure verticale annulaire, ladite surface permettant d'emboîter la portion annulaire rétreinte droite (110) du corps tubulaire d'un boîtier en matière plastique ou métalloplas­tique (103) pour sa liaison étanche à ladite portion (110) par collage ou par soudage.25. Plastic annular dome (112) comprising an annular veil of minimum thickness between 1.2 and 4 mm framed by an annular upper end swollen externally and a wider lower end skirt (113) having a vertical internal surface annular, said surface making it possible to fit the straight narrowed annular portion (110) of the tubular body of a plastic or metalloplastic casing (103) for its tight connection to said portion (110) by bonding or by welding. 26. Dôme annulaire (2;112) selon la revendication 24 ou 25, dont le voile annulaire (8) a une épaisseur minimale comprise entre 1,5 et 3mm, et qui est en l'une des matières du groupe formé par : les polyamides, les polycar­bonates, les polyesters, le polyacétal, le polypropylène et le polyéthylène.26. Annular dome (2; 112) according to claim 24 or 25, of which the annular veil (8) has a minimum thickness of between 1.5 and 3 mm, and which is made of one of the materials of the group formed by: polyamides, polycarbonates, polyesters, polyacetal, polypropylene and polyethylene. 27. Dôme annulaire (102) selon l'une quelconque des revendications 24 à 26, en polyoléfine, sa surface envers (28) étant munie d'une rondelle annulaire barrière (27) fixée par le moulage, ladite rondelle (27) comprenant au moins des couches de surface en polyoléfine compatible avec ladite polyoléfine du dôme (102) et une couche intermédiaire en Al ou en matière plastique barrière.27. Annular dome (102) according to any one of claims 24 to 26, made of polyolefin, its reverse surface (28) being provided with an annular barrier washer (27) fixed by molding, said washer (27) comprising at less surface layers of polyolefin compatible with said polyolefin of the dome (102) and an intermediate layer of Al or of barrier plastic.
EP90420113A 1989-03-02 1990-03-01 Dispenser body, dispenser having such a body and cap therefor Expired - Lifetime EP0385896B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903414A FR2643882B1 (en) 1989-03-02 1989-03-02 DISPENSER BODY, DISPENSER COMPRISING SUCH A BODY AND CORRESPONDING DOME
FR8903414 1989-03-02

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EP0385896A1 true EP0385896A1 (en) 1990-09-05
EP0385896B1 EP0385896B1 (en) 1992-11-11

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EP90420113A Expired - Lifetime EP0385896B1 (en) 1989-03-02 1990-03-01 Dispenser body, dispenser having such a body and cap therefor

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US (1) US5069368A (en)
EP (1) EP0385896B1 (en)
JP (1) JPH02269686A (en)
AT (1) ATE82164T1 (en)
CA (1) CA2011244A1 (en)
DE (1) DE69000441T2 (en)
DK (1) DK0385896T3 (en)
ES (1) ES2035732T3 (en)
FI (1) FI901055A0 (en)
FR (1) FR2643882B1 (en)
GR (1) GR3006318T3 (en)
IS (1) IS3559A7 (en)
NO (1) NO900980L (en)
PT (1) PT93311A (en)

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EP0426580A1 (en) * 1989-11-02 1991-05-08 Cebal S.A. Process for producing a dispenser head, corresponding head and dispenser
EP2832661A1 (en) * 2013-07-31 2015-02-04 Thomas GmbH Valve support for a pressurised aerosol container comprising a plastics valve cup

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FR2786413B1 (en) * 1998-12-01 2001-11-09 Oreal MULTI-PHASE COMPOSITION DELIVERY ASSEMBLY, USE OF SUCH AN ASSEMBLY, AND METHOD OF USE
JP3626367B2 (en) * 1999-05-07 2005-03-09 武蔵エンジニアリング株式会社 Plunger for syringe of liquid dispenser
DE60008402T2 (en) * 1999-10-16 2004-07-22 Glaxo Group Ltd., Greenford HOUSING FOR A DEVICE ON AN AEROSOL CAN
JP3781099B2 (en) * 2000-06-02 2006-05-31 トヨタ自動車株式会社 Hollow product, fluid processing system, and method for joining hollow members
FR2822655B1 (en) * 2001-03-27 2003-05-30 Oreal DEVICE FOR PACKAGING AND DISPENSING A PRODUCT, ESPECIALLY COSMETIC
GB0301366D0 (en) * 2003-01-21 2003-02-19 Glaxo Group Ltd A fixation device
NL2001678C2 (en) * 2008-06-12 2009-12-15 Kleijnen Beheer B V Holder for delivering acrylic paint, has reservoir partially filled with paint and including release module with entry opening and outlet opening for ejecting paint, where entry opening provides access to reservoir
FR2983249B1 (en) * 2011-11-28 2015-01-09 Valeo Sys Controle Moteur Sas METHOD FOR MOUNTING AN AIR CONTROL VALVE
DE102013107061A1 (en) * 2013-07-04 2015-01-08 Thomas Gmbh aerosol container
US10301104B2 (en) * 2015-06-18 2019-05-28 The Procter & Gamble Company Piston aerosol dispenser

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EP2832661A1 (en) * 2013-07-31 2015-02-04 Thomas GmbH Valve support for a pressurised aerosol container comprising a plastics valve cup

Also Published As

Publication number Publication date
DK0385896T3 (en) 1993-01-11
CA2011244A1 (en) 1990-09-02
FR2643882B1 (en) 1991-05-10
ES2035732T3 (en) 1993-04-16
JPH02269686A (en) 1990-11-05
EP0385896B1 (en) 1992-11-11
PT93311A (en) 1991-10-31
DE69000441D1 (en) 1992-12-17
GR3006318T3 (en) 1993-06-21
IS3559A7 (en) 1990-09-03
FR2643882A1 (en) 1990-09-07
ATE82164T1 (en) 1992-11-15
NO900980D0 (en) 1990-03-01
FI901055A0 (en) 1990-03-01
NO900980L (en) 1990-09-03
US5069368A (en) 1991-12-03
DE69000441T2 (en) 1993-04-01

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