CN101258077B

CN101258077B - Stopper device for container neck, container equipped with same and method for making same

Info

Publication number: CN101258077B
Application number: CN200680032486.0A
Authority: CN
Inventors: F·福尔科尼耶; G·安捷; M-F·博坦
Original assignee: Tetra Laval Holdings and Finance SA
Current assignee: Tetra Laval Holdings and Finance SA
Priority date: 2005-09-21
Filing date: 2006-09-20
Publication date: 2010-05-19
Anticipated expiration: 2026-09-20
Also published as: FR2890943A1; CN101258077A; FR2890943B1; ZA200803489B; US20080197100A1

Abstract

The skirt ( 12 ) of this device is provided with a peripheral zone of weakness ( 16 ) that is broken on first opening of the device and on either side of which the skirt includes a first portion ( 14 ) suitable for being separated from the neck after the zone of weakness has broken, and a second portion ( 15 ) provided with a tongue ( 17 ) projecting from the inside face of the skirt towards the first skirt portion and adapted, at its free end ( 17 B), to come into abutment against an associated shoulder ( 8 ) on the neck ( 2 ) in order to retain the second skirt portion around the neck on first opening of the device. In order to guarantee stronger and more reliable retention of the second skirt portion, the tongue presents, in a longitudinal section plane of the skirt, a shape that is essentially curved, being convex towards the first skirt portion.

Description

Be used for the stop device of container neck, the method that the container of this device is housed and makes this device

Technical field

The present invention relates to a kind of device and a kind of container that this device is housed that is used for the backstop container neck, also relate to a kind of method of making this device.

Background technology

The present invention relates more specifically to a kind of like this device, this device comprises a skirt section, this skirt is around the neck of container and have a part that is positioned at the bottom, when the neck rim refers to up vertical extent, this partial design that is positioned at the bottom becomes to keep when opening described device for the first time around neck, and the remainder in skirt section, the i.e. top in this skirt section, be designed to and remove from neck, and described remainder can not be removed the bottom via what the weakness zone that is suitable for fracture when for the first time opening described device was connected to the skirt section at first.But should region of fracture as allowing this device mark of use for the first time of consumer alert, and the skirt section that can not remove particularly when this skirt section that can not remove has significant length, can be used to cover the outward appearance purpose of neck respective regions.In this regard, the present invention especially but be not applicable in glass bottle the field of packing grape wine and spirits exclusively, wherein this glass bottle has usually by the bottom that can not remove and covers neck in the longuette portion.

In order to keep the skirt section, bottom around neck, known internal protrusion on the described skirt section is abutted against with the relevant portion of expanding on the neck.When the length in skirt section is longer, promptly this skirt section extends beyond expanding during portion head on the above-mentioned neck downwards at length direction, and usually, the projection that is used to keep is arranged to the tongue form integrally moulded with the main portion in this skirt section.Schematically show an example in this skirt section among Fig. 7, wherein the skirt section comprises the top 101 that the bottom 102 by the line of weakness that ruptures 103 that is illustrated by the broken lines and skirt section separates.The bottom be provided with the above-mentioned type from the inside face of part 102 towards the top 101 tongues that stretch out 104.When opening the stop device that comprises the skirt section for the first time, the user upwards drags top 101 shown in arrow 105, thereby help to make line 103 fracture, and tongue 104 by with neck on horizontal shoulder 107 be abutted against and help to keep bottom 102 around container neck 106.

But in fact because make a concession by upset before online 103 bend fractures of tongue, so skirt section 102 always can not kept by tongue 104 effectively.This is because skirt section 101 105 is dragged and produced the stress that imposes on tongue in the upward direction, and/or because the dimensional discrepancy of skirt section each neck mounted thereto.Therefore, as shown in Figure 7, tongue is that the original shapes of square-section changes into as the downward curved shape of the convex side that is shown in dotted line from illustrating with solid line and having substantially, and skirt section 102 is upwards dragged with respect to neck 106 with part 101 simultaneously.When tongue has like this curved shape to lower convexity, tongue no longer provides the vertical resistance of any opposing shoulder 107, thereby shoulder continues to make the tongue distortion, be turned to position shown in long and short dash line among Fig. 7 downwards up to tongue, wherein, the join domain between tongue and the skirt section 102 forms a kind of flexible hanger that does not have resistance.

When the skirt section is made by plastic material, under the stress that tongue 104 produces when opening for the first time described device through regular meeting the trend of making a concession appears, this is because the relative structure in skirt section is flexible, thus shown in arrow 108 near skirt section radial and outward deformation tongue.When molded acquisition was passed through in the skirt section, this problem was especially remarkable, and wherein, tongue 104 inside face from the skirt section when the demoulding stretches out downwards.In these cases, at the stop device that comprises the skirt section before neck 106 is settled, need upwards folding tongue 104, so that tongue presents the initial configuration shown in the solid line among Fig. 7, this join domain that is meaning between described tongue and the part 102 must be out of shape as hinge.Then, tongue is easier to flexibly make a concession when for the first time opening described device, to turn back to being similar to corresponding to the configuration shown in the long and short dash line that this tongue has when the demoulding.

Other example in the skirt section that is provided with one or more maintenance tongues in inside has been shown in EP-A-0410059, US-A-5129530 and US-A-5007545.Disclosed tongue all has the shape of so a part of material in these documents, and this part material is folded in acute angle on the base portion in skirt section from inner skirt surface and along fold line, and described fold line is perpendicular to the radius that is connected to the skirt section central longitudinal axis.Therefore, described a part of material constitutes by the base portion that is connected to the skirt section via the flexible hinge zone and along the free end that fold line is connected to base portion in hinged way.In practice, suitably form tongue by the straight configuration from tongue and make annular fold lines, described straight configuration is in molded last acquisition and be similar to the demoulding configuration shown in the long and short dash line among Fig. 7.

When the stop device of opening for the first time in above-mentioned three pieces of documents, tongue folds along annular fold lines towards base portion by its free end and is out of shape, and wherein fold line is limited by the polygonal shape in the cross section of these tongues.Thereby, have only the free end of tongue to help to be kept for effectively the skirt section that for good and all keeps around container neck, its risk is, these ends lean against under the stress on the base portion and can make a concession turning back fully, simultaneously, the leverage of the fold line by the coiled angle, base portion be created in against the skirt section the basic outside sensing for radially in flexible hinge zone stress (with among Fig. 7 by the similar mode shown in the arrow 108).These local stresses make the elastomeric material that constitutes the skirt section bleaching from observed mode part, the outside, skirt section, thereby damage the outward appearance in skirt section greatly, and make this skirt section be not suitable for packing wherein in principle bottle need the field of attractive grape wine and spirits.

Summary of the invention

The objective of the invention is to propose a kind of stop device with the above-mentioned type tongue, this device can be guaranteed to keep firmly and reliably being provided with the skirt section of tongue, and does not damage the outward appearance in described skirt section.

For this reason, the present invention proposes a kind of as the device that is used for the backstop container neck defined in the claim 1.

Utilize device of the present invention, and the longitudinal axis vertical extent in supposition skirt section, wherein the first in skirt section is positioned at the second portion top, and described or each tongue has outstanding side curved shape up, then can guarantee to keep with respect to neck sizable intensity of skirt section second portion.When opening described device for the first time, tongue axially is abutted against with the portion of expanding that is associated of neck, the stress that acts on the tongue is cushioned by the curved shape of tongue, this curved shape is tending towards making the tongue deflection to increase the curvature of tongue shape, thereby increase the intensity of tongue, the weakness zone fracture between two skirt sections.In other words, when for the first time opening device of the present invention, the initial curved shape of tongue force tongue with deflection, the mode that is easy to increase the curvature of tongue shape works.Because tongue is in the portion of expanding that is associated that its free end is abutted against neck, so opposite flex motion, that is, the trend that reduces to put upside down then the curvature in tongue cross section says it is impossible from machinery.Should be appreciated that, stretch out tongue whole and to extend on the width and in the mode of unanimity---promptly, the end that is connected to the skirt section from the tongue free end to tongue is without any the discontinuous zone of curvature---and towards the curved shape of skirt section inside bend, utilize the single-piece flex motion to work by the overall curvature that changes described shape.Especially, the dynamic behaviour of the unanimity of tongue is meaning, and cannot separate with base area along the free end that width will have the certain variations behavior that differs from one another that stretches out of tongue.

This crooked shape also has the advantage of the part that is positioned at the tongue top that thrust can be delivered to the skirt section, and described part can be thicker and firm than the part of tongue below.Especially, these thrusts can be pushed the skirt section with radial component, and this radial component is little or even can ignore, thereby the restriction skirt section and reduces the risk that any plastic material bleaches thus in the distortion of tongue place outward radial.

In dependent claims 2 to 12, understand the favourable individually of described device specifically or with any technical feasible favourable further feature of combination.

The present invention also provides a kind of container that comprises the neck that the stop device that is used for neck that above limits is housed.

The present invention also provides a kind of method that is used for the device of backstop container neck as the manufacturing that claim 14 limited.

Therefore, method of the present invention makes it possible to obtain fast a kind of skirt section of being laid around the neck of container by plastic material can be used for of making.The various operations of this method, for example the moulded skirt and the tongue that turns back can use axial substantially motion to realize, thus in practice, this method can automatically perform and can not reduce the quality that this method is carried out.

In claim 15, describe the feature of this method in detail.

Description of drawings

By reading hereinafter in conjunction with the accompanying drawings and the explanation that only provides as example, the present invention may be better understood, in the accompanying drawings:

Fig. 1 is the vertical section that is depicted as the stop device of the present invention around container neck, the right-hand part of this figure illustrates this stop device and is in assembled configuration on the neck and in fact in place around neck, and the left side illustrates the state of this device before configuration shown in the arrival right-hand part;

Fig. 2 illustrates the thin II of portion that irises out among Fig. 1 with the ratio of amplifying;

Fig. 3 is the view that the modification of stop device of the present invention similarly is shown with Fig. 1, this stop device be depicted as around container neck assembling and be in open for the first time before (state);

Fig. 4 is the transparent view of outer valve protection cap before installing other member assembling with this of the device among Fig. 3;

Fig. 5 is the local longitdinal cross-section diagram of the valve protection cap of Fig. 4;

Fig. 6 is and the similar view of Fig. 4 that another modification of the valve protection cap of apparatus of the present invention is shown; And

Fig. 7 is and the similar view of Fig. 2 that the example of prior art mentioned above is shown.

The specific embodiment

Fig. 1 and Fig. 2 illustrate a stop device that is suitable for being screwed in releasedly on the neck 2 of container 3, and this container is for example to be used to hold the especially bottle of being made by glass etc. of wine of alcoholic drinks.It is barrel-contoured shape that described neck has around the overall of a longitudinal axis X-X.

In the following description, for convenience's sake, suppose term for example " top " and " making progress " corresponding to direction from the body of container 3 towards the X-X that generally parallels to the axis of the neck 2 of this container, that is, and along up direction among Fig. 1 and 2; And term " bottom " and " downwards " are corresponding to relative direction.Also adopt identical agreement among Fig. 3-6.

At the top of container, neck 2 limits rim 4, and the liquid that is contained in the container 3 is poured out from this rim.The outside face of neck is provided with all radially outward outstanding spiral thread 5 and ring 6 in a downward direction continuously.Transition position between the neck remainder of bottom of encircling and formation elongate portion 7 is formed with horizontal shoulder 8, described elongate portion has open frusto-conical outside face around axis X-X downwards, described horizontal shoulder away from axis X-X the time slightly upwards and with respect to plane inclination perpendicular to described axis.

Stop device 1 comprises three different parts, that is, outer valve protection cap 10, plug-in unit 20 and optional seal strip 30, these parts are designed to coaxially assemble each other, are installed in together on the neck 2 then.

Valve protection cap 10 and plug-in unit 20 totally all be the tubular around a longitudinal axis, and as shown in the figure, this longitudinal axis is installing 1 when assembling and being installed on the neck 2 and axis X-X basically identical.Bottle cap and plug-in unit all open wide in the bottom, and by separately

end wall

11 and 21 sealings, it is the center and the

tubular skirt section

12,22 of extending downwards from all edges axis of each end wall that each end wall has with axis X-X respectively on the top.

Plug-in unit 20 is suitable for being inserted in the inboard of valve protection cap 10, and be suitable for axially and when axis X-X rotates for good and all in bottle cap the holding position fix.These two parts form one stop part 40 then, wherein, and the outside face in wall 11 and skirt section 12 covering wall 21 and skirt section 22.Plug-in unit can be by especially using hypracoustic heat-sealing, fix in the inboard holding position of bottle cap by adhesive agent or by the shape of the complementation between

wall

11,12,21 and 22, with the applicant's name application and be recorded as in 04/03154 the french patent application and describe these modes in detail.

Seal strip 30 is contained in plug-in unit 20 inboards and against end wall 21, is provided with adhesive layer alternatively between sealing sheet and end wall.Advantageously, plug-in unit is provided with from the skirt section lip 23 that radially inwardly stretch out at 22 top, and these lips 23 are used for keeping seal strip below axially, drop out from plug-in unit inside subsequently to prevent seal strip.In french patent application No.04/03154 mentioned above, provided the details of making these lips.

The bottom of the inside face in skirt section 22 is provided with screw thread 24, this threading path to inwardly stretch out and with neck 2 on outside thread 5 complementations, make stop part 40 be suitable for being screwed on the neck and and back out from neck.Stop part is easier controls in order to make, and the bottom of the outside face in skirt section 12 advantageously is provided with longitudinal slot 13.

Skirt section 12 is longer than skirt section 22, makes that the bottom in skirt section 12 extends to the longer distance in axial location below of the bottom edge 25 of plug-in unit 20 at the assembled state of device 1, begins to cover the elongate portion 7 of neck 2 and this neck with the rim 4 from neck 2.

When device 1 is opened for the first time, skirt section 12 is suitable for being divided into two different parts with approximate equal length, that is, with the top 14 and the bottom 15 that begins to be connected to by line of weakness 16 top 14 of end wall 11 formation one, described line of weakness is schematically shown by dotted line in Fig. 1 and 2.In the main body in skirt section 12, this line of weakness 16 is arranged on the position below of bottom edge 25 of plug-in unit 20 than short distance along axis X-X, thereby when device 1 assembled, the top 14 in skirt section held whole plug-in unit 20 separately.

In practice, line of weakness 16 is by the bridgeware that for example can rupture or pass circumferential cut or the notch that the wall in skirt section 12 forms and form.

For when device 1 is opened for the first time by making line of weakness 16 fractures that part 14 is separated with 15, bottom 15 axially keeps with respect to neck 2 by tongue 17 integrally formed with the base portion of this bottom 15 and that stretch out from this base portion inner surface.When the configuration that assembles that device 1 is in shown in Fig. 1 right hand portion, tongue extends upward towards axis X-X, and during the configuration before device is in assembling shown in Fig. 1 left-hand part, tongue extends downwards.

The thickness of tongue 17, be the minimum size of tongue in the plane of Fig. 1 and 2, along constant basically corresponding to another size of width, wherein this tongue inwardly stretches out on described width from skirt section 15 inside faces, and described width i.e. distance between the free end 17B of the end 17A that is connected to skirt section wall 15 of this tongue and this tongue.In the cross section with respect to axis X-X radially, that is, in the plane of Fig. 1 and 2, tongue 17 does not present the square-section, but has the curved shape that raises up.Thereby in this plane, tongue 17 presents the bowed shape corresponding to approximate 1/8th circular arcs, can observe, tongue 17 towards axis X-X and in Fig. 1 towards crooked down, that is, and towards the body bent of container 3.It is emphasized that Fig. 1 and 2 and the Fig. 3 to 6 that hereinafter will describe and be clearly shown that curved shape of the present invention, is the explanatory view about the tongue accurate dimension.Under suitable situation, those skilled in the art can quantize the relative size of tongue with reference to the details that provides herein.

In other words, the end face of tongue 17 is protruding necessarily, and the bottom surface of this tongue is recessed into necessarily.Or rather, the free end 17B of tongue and base portion 17C are respectively the end faces of projection in a side, are respectively the bottom surfaces that is recessed at opposite side; And the end 17A of tongue has the altered facing surfaces of bending direction owing to being connected to skirt section 15.

The size of tongue 17 and along the skirt section 15 axial location is designed so that, when device 1 is in assembled configuration and described device when neck 2 is installed, the end 17B of tongue flushes with shoulder 8.In fact, according to neck 2 particularly about its ring 6 and the accurate size of its shoulder 8, and according to the size of device 1, the end 17B of tongue is near the below of shoulder 8, wherein, tongue only contacts with shoulder, and can ignore any functional gap.

Valve protection cap 10 by semi-rigid plastics material for example polypropylene or polyethylene make, especially owing to apparent reason, polyethylene is preferred.Valve protection cap 10 obtains by moulded plastic material, so that when particularly forming with the molded tongue 17 with curved shape, form end wall 11 and skirt section 12 simultaneously.By tongue is extended with the state shown in Fig. 1 when leaving mould, that is, the free end 17B of tongue is pointed to down, can more easily from mould, take off bottle cap.

Before or after inserting seal strip 30 in the plug-in unit 20, assembling stop part device 1 comprises by axial introducing plug-in unit and forces plug-in unit to enter bottle cap from the bottom of opening wide of bottle cap and plug-in unit is placed in the skirt section 12 of valve protection cap 10, and wherein this bottle cap is in above-mentioned state when leaving mould.Then, the instrument that is used to carry out this insertion guarantees that advantageously tongue 17 is upwards folding, so that be in the state shown in Fig. 1 right hand portion of this tongue.So device 1 is in the configuration that is used to be assembled into neck 2.

Then, the stop part 40 that is included in the plug-in unit 20 that the holding position is fixed in the valve protection cap 10 is installed on the neck 20 by screw threads for fastening, thereby at first tongue 17 arrives shoulder 8 belows on the necks, seal strip 30 axial compressions are between the end wall 21 of rim 4 and plug-in unit then, and the bottom surface of sealing sheet advantageously limits the hollow annular recess 31 with described rim complementation.Then, skirt section 12 covers this neck that comprises neck elongate portion 7.

For device for opening 1, the user backs out stop part 40, that is, by by means of groove 13 grips stop part around axis X-X rotational stop part.When described device is opened for the first time, because stop part is caused by backing out and by the motion that makes progress of 50 expressions of arrow among Fig. 2 two parts 14 in skirt section are separated by line of weakness 16 is ruptured with 15.When top 14 is upwards driven, the tongue 17 that the shoulder 8 of bottom 15 by itself and neck 2 axially is abutted against and axially maintaining.Under the effect of upward movement, the part with the shape that raises up of tongue can cause the tongue deflection, thereby the curvature of tongue increases, so tongue is converted to as shown in phantom in Figure 2 deflection to configuration greatly from its initial curved configuration shown in solid line Fig. 2.At the end of tongue 17B, for obtain tongue by shown in the arrow 51 outwards and the deflection of the tongue that is directed upwards towards, need apply an axial force that is enough to make line of weakness 16 fractures.In other words, this deflection is used to provide with respect to shoulder 8 and keeps the bottom 15 in skirt sections up to the required power of line of weakness 16 fractures.

The curved shape that is appreciated that tongue causes the whole deflection of tongue, and wherein, tongue is wholely to stretch out the pressurized bending of mode consistent on the width at it.The continuous arc profile of this tongue bends shape has embodied the conformability of tongue dynamic behaviour.In practice, in tongue, avoid the discountinuity of curvature: preferably along tongue stretch out width with (curvature) change be limited in the curvature aviation value ± 15%.

Similarly, be appreciated that the unmodified thickness of tongue helps obtaining the effect of dynamic conformance.In practice, preferably along tongue stretch out width with (thickness) change be limited in thickness average value ± 10%.

Because tongue 17 is towards axis X-X and be bent downwardly, so before online 16 fractures, when skirt section 12 moved up, the deflection of the increase of tongue also can advantageously make this tongue stretching out on the width between end 17B and base portion 17C more crooked.

In addition, the tractive force that passes to skirt section 12 is mainly via the regional 15A of bottom 15 between line of weakness 16 and tongue 17, promptly is positioned at the zone below the tongue 17 in the configuration corresponding to Fig. 1 and 2 of the normal use configuration of container 3, transmits.

Fig. 3 to 5 illustrates the modification 100 of the stop device 1 of the Fig. 1 and 2 that installs around the neck 2 of container 3.For simplicity, identical member has used identical label in the device 1 and 100.Device 100 mainly is the structure that it is used to keep skirt section 15 with the difference of device 1: be not to have the tongue 17 similar single tongues that extend continuously with the whole inside edge around the skirt section, the skirt section 12 of device 100 is provided with a plurality of paddle boards 171 that form with tape 172, this tape is that all paddle boards are shared, and the base portion in this tape itself and skirt section 15 forms.As can seeing from Figure 4 and 5,12 the whole inner surface of inner surface 12A around the skirt section stretches out towards axis X-X tape 172 continuously from the skirt section from part 15.

Paddle board 171 is mutually the same.Each paddle board extends towards axis X-X by stretching out from tape 172.Because reasons in structure, these paddle boards advantageously inner peripheral of strip winding bar distribute in basic mode uniformly.Therefore, tape 172 is connected to the inner surface 12A in skirt section 12 via skirt section 15 with each paddle board, and the periphery of strip winding bar stays vacancy space 173 between continuous paired paddle board simultaneously.Extended from it each tape part 172 in the paddle board 171 is formed for keeping the tongue 170 in skirt section 15 together with relevant paddle board, and this tongue part with the tongue 17 shown in Fig. 1 and 2 on function is similar.

The thickness e of tape 172 ₁₇₂Be the minimum size of tape in the plane of Fig. 3 and 5, between the end 172B of the end 172A that is connected to skirt section 15 of this tape and this tape, two other size along this tape---particularly in above-mentioned plane---is constant substantially, and wherein said end 172B is connected to another paddle board 171 or is free in an intermediate space 173.Similarly, the thickness e of each paddle board ₁₇₁Between the free end 171B of the end 171A of the medial end 172B that is connected to tape of this paddle board and this paddle board, also remain unchanged.Thickness e ₁₇₁And e ₁₇₂Substantially equal, be beneficial to the molded and demoulding of tape and paddle board with the other parts in skirt section 12.

Between the inner 172A and outer end 172B of tape 172, tape has from the skirt section width of lambda that 12 inner surface 12A inwards stretches out ₁₇₂, this width is less than the dimension, lambda of each paddle board 171 between inner 171A of paddle board and outer end 171B ₁₇₁, this dimension, lambda ₁₇₁The width that to be described paddle board inwardly stretch out from the end 172B of tape.

Tape 172 and each paddle board 171 extend continuously, thereby stretch each other towards axis X-X in the plane of Fig. 3 and 5.At configuration corresponding to the Fig. 3 that is arranged in the assembled configuration on the neck 2, tape and paddle board extend upward towards axis X-X, and shown in Figure 4 and 5 corresponding to the assembling of molded configuration before in the configuration, owing to above identical at device 1 reason that provides, tape and paddle board extend downwards.In these two configurations, each paddle board is with the part that is associated of tape---and be each tongue 170, in the plane of Fig. 3 and 5, have the global sections that is the curved shape that raises up.In the example shown, each tongue 170 has approx the arc profile corresponding to 1/8th circular arcs.Thereby, described the same at device 1 as mentioned, in first time during device for opening 1, tape and paddle board have been guaranteed to be used for to keep the high strength in skirt sections 15 with respect to neck 2, and the crooked outline of tape and paddle board forces them to stretch out the comprehensive flex motion that utilization helps further to increase the curvature of described profile on the width and work whole.

Stop device 100 is to assemble with device 1 similar mode, and especially, tape 172 and paddle board 171 are upwards driven, so that tongue 170 enters assembled configuration as shown in Figure 3.When tape and paddle board were upwards driven, significant stress can be applied on tape and the paddle board so that tape and paddle board at the 172A place, tape end that is connected to skirt section 15 as the hinge elastic deformation, shown in arrow 172C among Fig. 5.When the demoulding of skirt section, very important stress also is applied to the zone of the material that the wall with tape and skirt section 12 connects together.Because the structural drag that paddle board produces, the size of all these stress is having paddle board 171 places greater than at 173 places, space that have vacant position.But, for fear of at paddle board, the most important thing is in that described paddle board is connected in the tape part in skirt section and too high stress occurs with each in radial section, tape is used for particularly the remainder at tape---promptly, tape in radial section towards the vacancy space 173 radially-protruding parts---these stress of middle distribution.For the outer surface region that flushes with tape end 172A in the zone of the elastomeric material that is subjected to stress by this way, particularly skirt section 15, above-mentioned stress distribution measure has limited these zones owing to too high stress damages the risk that particularly bleaches.

12 whole inside circumference extends continuously because tape 172 is around the skirt section, so, even be applied to setovering a little with respect to axis X-X that deflection on the tape drives, the interior stress of plastic material also distributes in the whole peripheral profile line of tape in the mode of basically identical with withing joint efforts.

In the example in the accompanying drawings, tape stretch out width of lambda ₁₇₂The width of lambda of stretching out less than paddle board ₁₇₁According to during the desired skirt section demoulding and the stress intensity when turning back paddle board, the ratio between these width can be adjusted but in fact.

Especially aspect the whole deflection of tongue 170 worked, device 100 was to open with the similar mode of unfolding mode of device 1.

Certainly, it is contemplated that to above-mentioned stop device 1 and 100 and their manufacture method make amendment and modification.Example is as follows:

Different with the example of the Fig. 1 and 2 that 15 whole inside circumference extends continuously around the skirt section of tongue 17 wherein, the modification 200 of device 1 as shown in Figure 6 comprises makes tongue extend discontinuously around the periphery in skirt section, and this can obtain a plurality of advantageously consistent different single tongues 270 that distribute of 12 inside circumference around the skirt section; Therefore, each tongue 270 is similar to a part or tongue 170 of tongue 17 on function, can observe, different with these tongues, each tongue 270 is connected to inner skirt surface end 270A from it and extends to its free end 270B, and not by shared peripheral tape etc. for example tape 171 be connected to each other;

When stop device is opened for the first time, particularly the diameter that makes ring 6 owing to the big deviation of neck size in given batch is than expection hour, in order to limit described or each tongue 17,170,270 radially blocks between ring on the neck 26 and skirt section 15 in vertical direction, skirt section 12 is provided with a plurality of protruding 19 in inside, 15 inside face extends radially these projectioies from the skirt section, and distributes around the inside circumference basically identical ground in this skirt section; Under the situation that a plurality of tongues 170 or 270 are arranged, each projection 19 in the periphery in skirt section and tongue is the location accordingly; Along axis X-X, each projection and is arranged to be positioned at substantially the free end 17B, the 171B that point to of tongue, the height of 270B when pressing inner skirt surface between the end 17A, the 172A that are connected to the skirt section of line of weakness 16 and tongue, 270A; Thereby, by being set, free end 17B, 171B, 270B that projection 19 makes described or each tongue 17,170,270 keep radially inside face away from skirt section 12, thereby have under the situation of projection 19 curved configuration of stretching out at tongue especially, the reliability that the shoulder 8 of the ring during having improved device and opening for the first time on described free end and the neck axially is abutted against, thereby in appropriate circumstances, when opening for the first time, tongue can be interfered fast with projection; This set is more effective than extra thickness is provided at the free end of tongue, and this also makes can more easily carry out the molded and demoulding to this valve protection cap;

By using special instrument, tongue 17,170 or 270 can fold into from the state that they leave mould and be used for that described device is assembled in the relevant state of configuration on the neck, and described instrument is different with the instrument that is used for plug-in unit 20 is placed in valve protection cap 10;

Not that two different parts of stack-mounted are provided with stop part 40 being used for each other for good and all, described stop part can be made single parts, wherein, have similar line 16 and tongue 17 or similar and the tongue 170 or 270 that installs 100 or 200 with device 1 in the skirt section of line of weakness and one or more tongues; And/or

In Fig. 1 and 3, the bottom 15 in skirt section 12 can extended downwards on short distance below tongue 17,170 or 270; Part 15 even can be below described tongue interrupt immediately; In other words, regional 15B can lack or even not exist very much.

Claims

1. device (1 that is used for the neck (2) of backstop container (3); 100; 200), this device comprises the skirt section (12) of the elongation of being made by plastic material, this skirt section is used for around neck, and be provided with the peripheral weakness zone (16) that is suitable for fracture when described device is opened for the first time, in the side of this weakness zone along skirt section longitudinal axis (X-X), the skirt section is included in and is suitable for first skirt section (14) that separates with neck after weakness zone has ruptured, and comprises at opposite side and to be provided with at least one tongue (17; 170; 270) second skirt section (15) is being used for that described device is assembled in assembled configuration on the neck, and described tongue stretches out and be suitable for free end (17B at this tongue from second inner skirt surface towards first skirt section; 171B; 270B) with neck on the portion of expanding (8) axially be abutted against, when for the first time opening described device, to keep second skirt section around neck;

Described device is characterised in that, is being used for that described device (1) is assembled in assembled configuration on the neck (2), described or each tongue (17; 170; 270) in the vertical section of skirt section (12), have towards the curved shape of necessity of first skirt section (14) projection,

Wherein, described or each tongue (17; 170; The curved shape of necessity 270) has arc profile in the vertical section of skirt section (12).

2. according to the device of claim 1, it is characterized in that described arc contour approximation ground is corresponding to 1/8th circles.

3. according to the device of claim 1 or 2, it is characterized in that described or each tongue (17; 170; The curved shape of necessity 270) has basic unmodified curvature along this tongue width that (12) inside face stretches out from the skirt section.

4. according to the device of claim 3, it is characterized in that described curvature is along described or each tongue (17; 170; 270) the variation of stretching out width is limited in curvature aviation value ± 15%.

5. according to the device of claim 1 or 2, it is characterized in that described or each tongue (17; 170; 270) in the vertical section of skirt section (12), has basic unmodified thickness.

6. according to the device of claim 5, it is characterized in that described thickness is along described or each tongue (17; 170; 270) from the variation of stretching out width of skirt section (12) inside face be limited in thickness average value ± 10% in.

7. according to the device of claim 1 or 2, it is characterized in that, opening described device (1 for the first time; 100; 200) time, described or each tongue (17; 170; 270) be suitable for deflection between two limit configurations, in each limit configuration, tongue keeps the curved shape towards first skirt section (14) protruding necessity of this tongue in the vertical section of skirt section (12).

8. according to the device of claim 1 or 2, it is characterized in that described or each tongue (17; 170; 270) inside face with skirt section (12) forms, and be suitable for being converted to and be used for described device (1) is assembled in assembled configuration on the neck (2) with respect to the molded configuration that the skirt section is molded together from the remainder in tongue and skirt section wherein, wherein, described assembled configuration is different from molded configuration.

9. according to the device of claim 1 or 2, it is characterized in that, be provided with the single tongue (17) that on the whole inside circumference of second skirt section (15), extends.

10. according to the device of claim 1 or 2, it is characterized in that the inside circumference around second skirt section (15) is provided with a plurality of independent tongues (270) discontinuously, these independent tongues advantageously distribute in the mode of basically identical around described periphery.

11. the device according to claim 1 or 2 is characterized in that, second skirt section (15) are provided with at least one projection (19) integratedly, and this projection is used for radially placing described skirt section and described or each tongue (17 in assembled configuration; 170; 270) free end (17B; 171B; 270B).

12. one kind comprises neck (2) and the device (1 that is used for this neck of backstop is installed; 100; 200) container (3), this device are according to each device in the aforesaid right requirement.

13. device (1 that is used for backstop container neck (2); 100; 200) manufacture method, wherein:

Moulded plastic material is to be formed for around the skirt section (12) of the elongation of neck, this skirt section is provided with peripheral weakness zone (16), this weakness zone is suitable for fracture when described device is opened for the first time, and in the side of this weakness zone along skirt section longitudinal axis (X-X), the skirt section is included in and is suitable for first skirt section (14) that separates with neck after weakness zone has ruptured, and comprises at opposite side and to be provided with at least one tongue (17; 170; 270) second skirt section (15), when leaving mould, this at least one tongue stretches out away from the direction of first skirt section (14) along the inside face from the skirt section; Then

Towards first skirt section (14) folding described or each tongue (17; 170; 270), extend towards described first skirt section up to the inner surface of tongue from the skirt section, like this, tongue is suitable at its free end (17B; 171B; 270B) with neck (2) on the portion of expanding (8) that is associated axially be abutted against, thereby when for the first time opening described device (1), keep second skirt section (15) around neck;

The method is characterized in that, during moulded skirt (12), described or each tongue (17; 170; 270) molded like this, make that in the longitudinal cross-section in skirt section tongue has towards the curved shape of necessity of first skirt section (14) projection,

14. the method according to claim 13 is characterized in that, uses to be suitable for being fixed at least a portion that the inboard plug-in unit (20) in skirt section (12) forms stop device (1), and during described plug-in unit inserts the skirt section, described or each tongue (17; 170; 270) be folded.