WO1996039293A2 - Anti-projection masking film - Google Patents

Anti-projection masking film Download PDF

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Publication number
WO1996039293A2
WO1996039293A2 PCT/FR1996/000855 FR9600855W WO9639293A2 WO 1996039293 A2 WO1996039293 A2 WO 1996039293A2 FR 9600855 W FR9600855 W FR 9600855W WO 9639293 A2 WO9639293 A2 WO 9639293A2
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WO
WIPO (PCT)
Prior art keywords
film
density polyethylene
high density
manufacturing
cutting
Prior art date
Application number
PCT/FR1996/000855
Other languages
French (fr)
Other versions
WO1996039293B1 (en
WO1996039293A3 (en
Inventor
Jean-Jacques Jouve
Original Assignee
Ets Ribeyron & Cie
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ets Ribeyron & Cie filed Critical Ets Ribeyron & Cie
Publication of WO1996039293A2 publication Critical patent/WO1996039293A2/en
Publication of WO1996039293A3 publication Critical patent/WO1996039293A3/en
Publication of WO1996039293B1 publication Critical patent/WO1996039293B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/16—Surface shaping of articles, e.g. embossing; Apparatus therefor by wave energy or particle radiation, e.g. infrared heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor

Definitions

  • the present invention relates to the manufacture of high density polyethylene film on which various treatments will be performed either separately or continuously, so that each carried s operations do not interfere during the implementation.
  • the desired effect, while retaining a tear strength, is ease of cutting after priming.
  • the first operation is to achieve this equation, better resistance and easy cutting without tools.
  • the resistance, elongation and cutting characteristics were calculated on a film 10 microns thick.
  • the manufacturing process includes eight processing zones from the raw material to the finished product.
  • the feeding zone allows the mixing of the polymers in which the (
  • the compression and heating zone in which the material will reach its point of extrusion, is composed of a moving endless screw, and heating elements to be able to obtain the various components in the liquid state and to allow injection into the annular die.
  • the extrusion zone includes an annular die, the diameter of which can vary according to the different film widths.
  • the material rendered liquid will be projected upward to constitute the forming element.
  • the cooling zone will be linked to the formation of the "balloon” and will be delimited by an external cooling zone at the outlet of the die, and in the upper part of the "balloon".
  • the film thus created forms a tube which will be flattened to enter the chain.
  • the ratio between the diameter of the die and the diameter of the balloon can vary from 1 to 3, depending on the thicknesses of film sought and the speed of travel of the film.
  • plastic material has been transformed into plastic film, which will undergo various treatments adapted to the needs of each user.
  • a polarization zone of the film element will make it possible to obtain a plating effect on any surface, whatever its material and its orientation, vertical, horizontal, or overhanging.
  • a treatment zone will make it possible to create micro asperities on the surface of the film in order to be able to allow the attachment of the elements projected onto its contact.
  • a cold or hot glue impregnation area on the film will allow it to be able to be applied on different supports, whatever the material and the position, both vertical and overhanging.
  • the process applied makes it possible to maintain the charge on the film over time, therefore to maintain the plating effect.
  • the plating value on a smooth and vertical surface is 1050 g / M2, ie a plating / weight ratio of the order of 110. This effect can be increased according to the thicknesses of the films, and the support on which the film can be pressed. , respecting the attraction limit of airborne dust.
  • the film can also be printed continuously during its manufacture for personalization purposes.
  • the process of gluing one or more parts of the film in the form of continuous strips, see discontinuous strips is carried out at the end of the production line before winding.
  • the choice of installation of the glued part will correspond to future applications of the film.
  • Hot process by spraying glue. Hot process by impregnation of a drum coming into contact with the film either continuously or intermittently.
  • strips of adhesive can vary in width, be opposite or at the edge of the film or on any other part. They can be covered by a protective strip which can be removed when the film is positioned on the surface to be protected.
  • the film resists most solvents used in industrial or automotive painting.

Abstract

The invention relates to the production of a high density polyethylene film in tubular form, for masking parts to be protected during painting and cleaning work and the like, whenever it is desirable to provide protection against aggression of various types. The HDPE film obtained by the methods of the invention has the following properties: it is transparent or faintly coloured; it can be manufactured so as to be a few microns thick; it can be cut manually, uniformly and very easily without tools, in a longitudinal and lateral direction; it can be manufactured so as to have different widths; it is stretch-resistant; it retains all types of projections such as paint, ink, soil etc.; it is printable; it can be applied on any substrate, independently of the state of its surface or the position thereof; and several adhesive strips can be provided on either or on both sides thereof, according to the needs of the user, thus avoiding the need for an additional adhesive strip. In addition to the above properties, the film has such properties as to make it suitable for protecting various items, such as in hygiene and food applications.

Description

FILM DE MASQUAGE CONTRE LES PROJECTIONS MASKING FILM AGAINST SPRAY
La présente invention concerne la fabrication d'un film en polyethylene haute densité sur lequel différents traitements vont être exécutés, soit séparément soit en continu, de façon à ce que chaque opérations réalisées ne s'interfèrent pas au cours de la mise en oeuvre.The present invention relates to the manufacture of high density polyethylene film on which various treatments will be performed either separately or continuously, so that each carried s operations do not interfere during the implementation.
Compte tenu de l'usage de ce produit et pour obtenir une production rentable, les vitesses de défilement vont se situer entre 1 ,6 et 2,2 mètres / seconde. Contrairement aux procédés réalisés à ce jour, la recherche a été accentuée sur une très grande facilité de déchirement du produit de façon identique dans le sens machine et dans le sens travers machine.Given the use of this product and to obtain profitable production, the running speeds will be between 1.6 and 2.2 meters / second. Unlike the processes carried out to date, research has been emphasized on a very great facility for tearing the product identically in the machine direction and in the cross machine direction.
L'effet recherché, tout en conservant une résistance au déchirement, est une facilité de découpe après amorçage L'opération première est de réaliser cette équation, une meilleure résistance et un découpage aisé sans outil. Les caractéristiques de résistance, d'allongement, de découpe ont été calculées sur un film de 10 microns d'épaisseur.The desired effect, while retaining a tear strength, is ease of cutting after priming. The first operation is to achieve this equation, better resistance and easy cutting without tools. The resistance, elongation and cutting characteristics were calculated on a film 10 microns thick.
D'autre part il est nécessaire lors de la découpe du film que celle-ci soit rectiligne par rapport au sens machine ou au sens travers machine sans dépasser une variation de 1 à quelques degrés. En matière de masquage ce point revêt une importance capitale, lorsqu'il est nécessaire de découper une bande de largeur régulière dans le sens longitudinal sur une longueur de plusieurs mètres .On the other hand it is necessary during the cutting of the film that it is rectilinear with respect to the machine direction or the cross machine direction without exceeding a variation of 1 to a few degrees. In terms of masking, this point is of capital importance when it is necessary to cut a strip of regular width in the longitudinal direction over a length of several meters.
Essais effectués par une température ambiante de 20 °c et un degré d'hygrométrie de 50 %.Tests carried out at an ambient temperature of 20 ° C and a degree of humidity of 50%.
sens machine sens travers machinemachine direction machine direction
Allongement 216 % 167 %Elongation 216% 167%
Résistance au point de rupture 38 g/mm 35 g / mmBreaking point resistance 38 g / mm 35 g / mm
Résistance au découpage 3Q 24 g après amoceCutting resistance 3Q 24 g after amoce
Déviation maxi 1 a 5 0,5 à 1 ,2 °Maximum deviation 1 to 5 0.5 to 1.2 °
Procédé suivant lequel le film polyethylene haute densité, est fabriqué en continu par extrusion soufflage sous forme de gaine qui subira par la suite différentes transformations pour obtenir les qualités requises recherchées.Process by which the high density polyethylene film is produced continuously by extrusion blow molding in the form of a sheath which will subsequently undergo various transformations to obtain the required requisite qualities.
Le procédé de fabrication comprend huit zones de transformation de la matière première, au produit fini.The manufacturing process includes eight processing zones from the raw material to the finished product.
La zone d'alimentation permet le mélange des polymères dans laquelle le (The feeding zone allows the mixing of the polymers in which the (
P.E.H.D.) et les différents adjuvants vont être mélangés.P.E.H.D.) and the various adjuvants will be mixed.
La zone de compression et de chauffage, dans la quelle la matière va atteindre son point d'extrusion est composée d'une vis sans fin en mouvement, et d' éléments chauffants pour pouvoir obtenir les différents composants en l'état liquide et pour permettre l'injection dans la filière annulaire.The compression and heating zone, in which the material will reach its point of extrusion, is composed of a moving endless screw, and heating elements to be able to obtain the various components in the liquid state and to allow injection into the annular die.
La zone d'extrusion comprend une filière annulaire dont le diamètre peut varier en fonction des différentes largeurs de film . La matière rendue liquide va être projetée vers le haut pour constituer l'élément de mise en formation.The extrusion zone includes an annular die, the diameter of which can vary according to the different film widths. The material rendered liquid will be projected upward to constitute the forming element.
FEUILLE DE REMPLACEMENT (REGLE 25) La zone de formation appelée "ballon" où la matière va se transformer en une membrane tubulaire comprend au centre de la filière, un tube qui va permettre le refroidissement du "ballon" à l'intérieur.SUBSTITUTE SHEET (RULE 25) The formation zone called "balloon" where the material will transform into a tubular membrane includes in the center of the die, a tube which will allow the cooling of the "balloon" inside.
La zone de refroidissement va être liée à la formation du "ballon" et sera délimitée par une zone de refroidissement externe en sortie de filière , et en partie haute du "ballon". Le film ainsi créer forme un tube qui sera aplati pour entrer en chaîne.The cooling zone will be linked to the formation of the "balloon" and will be delimited by an external cooling zone at the outlet of the die, and in the upper part of the "balloon". The film thus created forms a tube which will be flattened to enter the chain.
Le rapport entre le diamètre de la filière et le diamètre du ballon peut varier de 1 à 3, suivant les épaisseurs de film recherchées et la vitesse de défilement du film.The ratio between the diameter of the die and the diameter of the balloon can vary from 1 to 3, depending on the thicknesses of film sought and the speed of travel of the film.
A ce stade là, la matière plastique a été transformée en film plastique, celui -ci va subir différents traitements adaptés aux besoins de chaque utilisateur.At this stage, the plastic material has been transformed into plastic film, which will undergo various treatments adapted to the needs of each user.
Une zone de polarisation de l'élément film va permettre d'obtenir un effet de placage sur toute surface , quelqu'en soit sa matière et son orientation, verticale, horizontale , ou en surplomb.A polarization zone of the film element will make it possible to obtain a plating effect on any surface, whatever its material and its orientation, vertical, horizontal, or overhanging.
Une zone de traitement va permettre de créer des micro aspérités à la surface du film afin de pouvoir permettre l'accrochage des éléments projetés à son contact. Une zone d'imprégnation de colle à froid ou à chaud sur le film va permettre de pouvoir appliquer celui-ci sur différents supports quelqu'en soit la matière et la position, aussi bien verticale, qu'en surplomb.A treatment zone will make it possible to create micro asperities on the surface of the film in order to be able to allow the attachment of the elements projected onto its contact. A cold or hot glue impregnation area on the film will allow it to be able to be applied on different supports, whatever the material and the position, both vertical and overhanging.
Pour obtenir une surface rugueuse sur les faces du film, celui-ci va recevoir en partie ou en totalité, des impacts électriques, sous haute tension de 7 à 9000 volts, créant ainsi des micro aspérités, sans altérer notablement les caractéristiques du film. La répétition, la variation, le positionnement sur le film des ces impacts électriques au cours de la fabrication, va rendre sa surface apte à recevoir les autres transformations tel que l'impression, et la pose d'une bande de colle. Ce procédé permet de retenir les projections diverses, peintures, souillures sur le film au cours des opérations de masquage. . L'utilisation du film, en fonction des supports à protéger, s'avère plus aisé lorsqu'il se plaque par effet statique sur les surfaces à masquer et notamment quand celles-ci sont verticales ou que le film est posé sur un plafond. Le procédé consiste à décharger puis à charger électro-statiquement le film. Compte tenu de son faible poids au mètre carré, celui-ci recevra une faible charge lui permettant de tenir dans n'importe quelle position sur tout support, sans pour cela attirer les particules de poussières. Le procédé appliqué permet de maintenir dans le temps la charge sur le film, donc de conserver l'effet de placage. La valeur de placage sur une surface lisse et verticale est de 1050 g /M2 soit un rapport placage /poids de l'ordre de 110. Cet effet peut être augmenté suivant les épaisseurs des films, et le support sur lequel le film peut se plaquer, en respectant la limite d'attirance des poussières en suspension dans l'air..To obtain a rough surface on the faces of the film, it will receive in part or in whole, electrical impacts, under high voltage from 7 to 9000 volts, thus creating micro asperities, without significantly altering the characteristics of the film. The repetition, the variation, the positioning on the film of these electrical impacts during manufacturing, will make its surface capable of receiving other transformations such as printing, and the installation of a strip of glue. This process makes it possible to retain various projections, paints, stains on the film during the masking operations. . The use of the film, depending on the supports to be protected, is easier when it is flattened by static effect on the surfaces to be masked and in particular when these are vertical or when the film is placed on a ceiling. The method consists of discharging and then electro-statically charging the film. Given its low weight per square meter, it will receive a low load allowing it to hold in any position on any support, without attracting dust particles. The process applied makes it possible to maintain the charge on the film over time, therefore to maintain the plating effect. The plating value on a smooth and vertical surface is 1050 g / M2, ie a plating / weight ratio of the order of 110. This effect can be increased according to the thicknesses of the films, and the support on which the film can be pressed. , respecting the attraction limit of airborne dust.
Le film peut être aussi imprimé en continu durant sa fabrication à des fins de personnalisation.The film can also be printed continuously during its manufacture for personalization purposes.
Pour éviter d'ajouter une bande adhesive lors de la pose du film , le procédé d'encollage d'une ou plusieurs parties du film sous forme de bandes continues, voir discontinues est réalisé en fin de chaîne de fabrication avant enroulement. Le choix de pose de la partie encollée va correspondre aux applications futures du film.To avoid adding an adhesive strip during the laying of the film, the process of gluing one or more parts of the film in the form of continuous strips, see discontinuous strips is carried out at the end of the production line before winding. The choice of installation of the glued part will correspond to future applications of the film.
Deux procédés peuvent être utilisés:Two methods can be used:
Procédé à froid par pulvérisation de colle. Procédé à chaud par imprégnation d'un tambour entrant en contact avec le film soit en continu, soit par intermittence.Cold process by spraying glue. Hot process by impregnation of a drum coming into contact with the film either continuously or intermittently.
Ces bandes de colle peuvent varier en largeur, être opposées ou en bordure de film ou sur toute autre partie. Elles peuvent être couvertes par une bande de protection qui peut être enlevée lorsque le film est positionné sur la surface à protéger.These strips of adhesive can vary in width, be opposite or at the edge of the film or on any other part. They can be covered by a protective strip which can be removed when the film is positioned on the surface to be protected.
D'autre part, par les caractéristiques du P.E.H.D. , le film résiste à la plupart des solvants utilisés en peinture industrielle ou automobile. On the other hand, by the characteristics of the P.E.H.D. , the film resists most solvents used in industrial or automotive painting.

Claims

REVENDICATIONS
1 ) Procédé de fabrication d'un film polyethylene haute densité en tube caractérisé en ce qu il est réalisé par un dispositif d'extrusion soufflage, permettant d'obtenir pour de faibles épaisseurs de l'ordre de 10 microns, une forte résistance au déchirement ,1) Method for manufacturing a high density polyethylene film in a tube, characterized in that it is produced by a blowing extrusion device, making it possible to obtain, for small thicknesses of the order of 10 microns, a high resistance to tearing ,
2) Procédé de fabrication d'un film polyethylene haute densité en tube selon la revendication 1 , caractérisé en ce qu'il offre une faible résistance au découpage après amorce, permettant à l'utilisateur de le découper a la main sans outil 3) Procédé de fabrication d'un film polyethylene haute densité en tube selon les revendications 1 et 2, caractérisé en ce qu'il se découpe de façon rectihgne2) A method of manufacturing a high density polyethylene film in a tube according to claim 1, characterized in that it offers a low resistance to cutting after priming, allowing the user to cut it by hand without tool 3) Method for manufacturing a high density polyethylene film in a tube according to claims 1 and 2, characterized in that it is cut in a straight line
4) Procédé de fabrication d'un film polyethylene haute densité en tube selon les revendications 1 à 3, caractérisé en ce qu'il se découpe dans le sens longitudinal et latéral avec une déviation inférieure à 2° d'angle4) A method of manufacturing a high density polyethylene film in a tube according to claims 1 to 3, characterized in that it is cut in the longitudinal and lateral directions with a deviation of less than 2 ° angle
5) Procédé de fabrication d'un film polyethylene haute densité en tube selon les revendications 1 à 4, caractérisé en ce qu'il se découpe dans le sens longitudinal , ou dans le sens latéral, ou de façon équivalente sans prédominance d'un sens part rapport à l'autre5) A method of manufacturing a high density polyethylene film in tubes according to claims 1 to 4, characterized in that it is cut in the longitudinal direction, or in the lateral direction, or in an equivalent manner without predominance of a direction share compared to the other
6) Procédé de fabrication d'un film polyethylene haute densité en tube selon les revendications 1 à 5, caractérisé en ce que la surface de l'une ou l'autre des faces, ( ou les deux), est rendue rugueuse pour retenir les projections diverses, par un bombardement d'impacts électriques (5) créant de micro-aspérités , et sans pour cela modifier et altérer les caractéristiques de résistance, de découpe, de déchirement , de linéarité de découpe sans déviation6) A method of manufacturing a high density polyethylene film in tubes according to claims 1 to 5, characterized in that the surface of one or other of the faces, (or both), is made rough to retain the various projections, by a bombardment of electrical impacts (5) creating micro-asperities, and without modifying and altering the characteristics of resistance, cutting, tearing, linearity of cutting without deviation
7) Procédé de fabrication d'un film polyethylene haute densité en tube selon les revendications 1 à 6 caractérisé en ce que le déchargement et chargement électrostatιque(6) permettent au dit film de pouvoir se plaquer sur tout support quelque soit sa position, sans pour cela attirer les particules et poussières en suspension dans l'air, et sans pour cela modifier et altérer les caractéristiques de résistance, de découpe, de déchirement., de linéarité de découpe sans déviation, et de micro aspérités 8) Procédé de fabrication d'un film polyethylene haute densité en tube selon les revendications 1 à 7 caractérisé en ce que une ou plusieurs bandes de colle peuvent être appliquées soit en bordure de film, soit en n'importe qu'elle autre partie, de façon continue ou discontinue par pulvérisation à froid (7) ,et sans pour cela modifier et altérer les caractéristiques de résistance, de découpe, de déchirement., de linéarité de découpe sans déviation, de micro aspérités., et d'effet de placage.7) A method of manufacturing a high density polyethylene film in tube according to claims 1 to 6 characterized in that the discharge and electrostatic charging (6) allow the said film to be able to be pressed onto any support whatever its position, without for that attracting particles and dust suspended in the air, and without modifying and altering the characteristics of resistance, cutting, tearing., linearity of cutting without deviation, and micro asperities 8) A method of manufacturing a high density polyethylene film in a tube according to claims 1 to 7, characterized in that one or more strips of adhesive can be applied either at the edge of the film, or in any other part, continuously or discontinuously by cold spraying (7), and without modifying and altering the characteristics of resistance, cutting, tearing., linearity of cutting without deviation, micro asperities., and plating effect .
9) Procédé de fabrication d'un film polyethylene haute densité en tube selon les revendications 1 à 7 caractérisé en ce que une ou plusieurs bandes de colle peuvent être appliquées à chaud soit en bordure de film, soit en n'importe qu'elle autre partie de façon continue ou discontinue par imprégnation d'un ou plusieurs tambours, pouvant se déplacer latéralement et entrer en contact avec le film de façon continue ou par intermittence et ce sans altérer les caractéristiques de résistance, de découpe, de déchirement., de linéarité de découpe sans déviation, de micro aspérités., et d'effet de placage.9) A method of manufacturing a high density polyethylene film in tubes according to claims 1 to 7 characterized in that one or more strips of adhesive can be applied hot either at the edge of the film, or in any other part continuously or discontinuously by impregnation of one or more drums, which can move laterally and come into contact with the film continuously or intermittently without altering the characteristics of resistance, cutting, tearing., linearity cutting without deviation, micro asperities., and plating effect.
10) Procédé de fabrication d'un film polyethylene haute densité en tube seion les revendications 1 à 9 caractérisé en ce que, une bande de protection amovible peut être appliquée sur les bandes de colle pour permettre de positionner le film aisément sur les parties à protéger, et être enlever une fois le positionnement effectuer grâce à l'effet de placage du film. 10) A method of manufacturing a high density polyethylene film in tube according to claims 1 to 9 characterized in that, a removable protective strip can be applied to the adhesive strips to allow positioning the film easily on the parts to be protected , and be removed once the positioning has been carried out thanks to the film plating effect.
PCT/FR1996/000855 1995-06-06 1996-06-06 Anti-projection masking film WO1996039293A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR95/07013 1995-06-06
FR9507013A FR2735065A1 (en) 1995-06-06 1995-06-06 MASKING FILM AGAINST SPRAY.

Publications (3)

Publication Number Publication Date
WO1996039293A2 true WO1996039293A2 (en) 1996-12-12
WO1996039293A3 WO1996039293A3 (en) 1997-01-09
WO1996039293B1 WO1996039293B1 (en) 1997-02-13

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ID=9479933

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PCT/FR1996/000855 WO1996039293A2 (en) 1995-06-06 1996-06-06 Anti-projection masking film

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FR1154211A (en) * 1956-01-30 1958-04-03 Modern Plastic Machinery Corp Method and device for surface treatment of plastics and the like
FR2267339A1 (en) * 1974-04-10 1975-11-07 Du Pont
US4000234A (en) * 1974-06-10 1976-12-28 Du Pont Of Canada Limited Process for the manufacture of polyolefin film
US4098406A (en) * 1974-07-05 1978-07-04 Tower Products, Inc. Polymer film having linear tear properties
FR2384684A1 (en) * 1977-03-21 1978-10-20 Wiik & Hoeglund PROCESS FOR MAKING PACKAGING NON-SLIP
EP0180029A2 (en) * 1984-10-29 1986-05-07 Union Camp Corporation Method for controlled orientation of extruded resins and product produced
GB2200359A (en) * 1987-02-02 1988-08-03 Stephanie Horn Corona discharge treatment of plastic film for a paint or lacquer mask
NL9001987A (en) * 1990-09-10 1992-04-01 Tno UV-laser irradiation treatment of polymer substrate surfaces - used for treatment of polymer films, fabrics, fibre and yarn constructions, e.g. polyester fabrics to improve adhesion of coatings
US5284613A (en) * 1992-09-04 1994-02-08 Mobil Oil Corporation Producing blown film and blends from bimodal high density high molecular weight film resin using magnesium oxide-supported Ziegler catalyst

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