FR2556271A1 - Method for attaching a strip or the like, fitted with catching elements, to an article being moulded, and strip for its implementation - Google Patents
Method for attaching a strip or the like, fitted with catching elements, to an article being moulded, and strip for its implementation Download PDFInfo
- Publication number
- FR2556271A1 FR2556271A1 FR8319926A FR8319926A FR2556271A1 FR 2556271 A1 FR2556271 A1 FR 2556271A1 FR 8319926 A FR8319926 A FR 8319926A FR 8319926 A FR8319926 A FR 8319926A FR 2556271 A1 FR2556271 A1 FR 2556271A1
- Authority
- FR
- France
- Prior art keywords
- strip
- protective film
- face
- elements
- film
- 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.)
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Classifications
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- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0078—Measures or configurations for obtaining anchoring effects in the contact areas between layers
- B29C37/0082—Mechanical anchoring
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
- A44B18/0069—Details
- A44B18/0076—Adaptations for being fixed to a moulded article during moulding
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- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
- B29C33/0044—Moulds or cores; Details thereof or accessories therefor with sealing means or the like for sealing off parts of inserts projecting into the mould cavity
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
- B29C33/14—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels against the mould wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/58—Seat coverings
- B60N2/5816—Seat coverings attachments thereof
- B60N2/5825—Seat coverings attachments thereof by hooks, staples, clips, snap fasteners or the like
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- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
L'invention est relative à un procédé de fixation d'une bande, notamment un ruban auto-agrippant, munie sur une face d'éléments d'accrochage, sur un article#moulé auquel elle adhère, par son autre face, lors de l'opération de moulage elle-même. The invention relates to a method of fixing a strip, in particular a self-gripping tape, provided on one side with hooking elements, on a molded article # to which it adheres, by its other side, during the 'molding operation itself.
Plus particulièrement, l'invention concerne la fixation d'une bande de ce type sur un article moulé en mousse, par exemple une assise ou un dossier de siège d'au; tomobile, cette bande étant destinée à retenir, par sa face extérieure munie d'éléments d'accrochage, un article muni d'éléments d'accrochage complémentaires, notamment un revêtement du genre housse. More particularly, the invention relates to the fixing of a strip of this type on a molded foam article, for example a seat or a seat back; tomobile, this strip being intended to retain, by its outer face provided with hooking elements, an article provided with complementary hooking elements, in particular a cover-like coating.
L'invention concerne également une bande pour la mise en oeuvre de ce procédé de fixation. The invention also relates to a strip for implementing this fixing method.
De façon connue, lorsqu'il s'agit d'assujettir une telle bande à l'article lors du moulage de celui-ci, on dispose préalablement la bande à l'intérieur du moule, contre la surface intérieure delta cavité de moulage, à laquelle elle adhère temporairement. In known manner, when it is a question of subjecting such a strip to the article during the molding of the latter, the strip is placed beforehand inside the mold, against the interior surface of the molding cavity, which it temporarily adheres to.
Le maintien en place de la bande avant et pendant l'opération de moulage est assuré, de façon satisfaisante, par des moyens variés tels qu'un collage provisoire ou encore une retenue magnétique ou mécanique. Keeping the strip in place before and during the molding operation is satisfactorily ensured by various means such as temporary bonding or even magnetic or mechanical retention.
Par contre, une difficulté non encore résolue de façon pleinement satisfaisante consiste à éviter que le produit de moulage, avant sa mise en forme physique et chimique finale , ne se glisse entre la surface intérieure du moule et le bande elle-même pour venir intéresser les éléments d'accrochage tournés vers l'extérieur du moule et se répandre et se fixer entre eux, en inhibant ainsi leur pouvoir d'accrochage. On the other hand, a difficulty which has not yet been fully satisfactorily resolved consists in preventing the molding product, before its final physical and chemical shaping, from slipping between the interior surface of the mold and the strip itself in order to interest the hooking elements facing outward from the mold and spreading and fixing between them, thereby inhibiting their hooking power.
L'invention a principalement pour but de résoudre cette difficulté de façon techniquement et aconomiquement satisfaisante. The main object of the invention is to solve this difficulty in a technically and aconomically satisfactory manner.
A cet effet le procédé selon l'invention pour la fixation d'une bande ou analogue, dont une face est munie d'éléments d'accrochage, sur un article en cours de moulage, pendant l'opération de moulage elle-même, dans lequel la bande est assujettie provisoirement sur la surface intérieure du moule, lesdits éléments d'accrochage étant tournés vers l'extérieur du moule et la bande prenant appui sur ladite surface le long d'une zone marginale périphérique dépourvue d'éléments d'accrochage, est caractérisé par le fait qu'on dispose, entre la surface intérieure du moule et la face de la bande portant lesdits éléments d'accrochage, une fine pellicule de protection continue qui recouvre les éléments d'accrochage et qui s'étend jusqu'à ladite zone marginale, la pellicule de protection étant en une matière qui se dégrade à une température supérieure à celle à partir de laquelle le produit de moulage se stabilise physique- ment et chimiquement, de sorte que, tant que le produit de moulage est encore liquide, il ne peut s'insérer entre ladite face de la bande et la pellicule de proteetion non dégradée et que, lorsque le produit est stabilisé, la pellicule se dégrade et disparait sous effet de l'augmentation de température pour découvrir lesdits éléments d'accrochage. To this end the method according to the invention for fixing a strip or the like, one side of which is provided with hooking elements, on an article being molded, during the molding operation itself, in the strip is provisionally secured to the inner surface of the mold, the said hooking elements being turned towards the outside of the mold and the strip bearing on the said surface along a peripheral marginal zone devoid of the hooking elements, is characterized by the fact that between the inner surface of the mold and the face of the strip carrying said fastening elements, there is a thin continuous protective film which covers the fastening elements and which extends up to said marginal zone, the protective film being of a material which degrades at a temperature higher than that from which the molding product stabilizes physically and chemically, so that, as long as the molding product is still re liquid, it cannot be inserted between said face of the strip and the undegraded protective film and that, when the product is stabilized, the film degrades and disappears under the effect of the increase in temperature to discover said elements of 'hanging.
La nature de la pellicule de protection est choisie en fonction des caractéristiques du produit de moulage. The nature of the protective film is chosen according to the characteristics of the molding product.
Ainsi, selon un mode d'application préféré, dans lequel l'article moulé est en mousse obtenue à froid, c'est à-dire une mousse se stabilisant à partir d'environ 50 C, par exemple en polyéther, on pourra utiliser une pellicule en polyoléfine, notamment une polyéthylène souple ou rigide, qui se dégrade à partir de 10000, ou encore en acétate de cellulose qui se dégrade à partir de 6000. Thus, according to a preferred mode of application, in which the molded article is made of cold foam, that is to say a foam stabilizing from about 50 C, for example polyether, one can use a polyolefin film, in particular a flexible or rigid polyethylene, which degrades from 10,000, or also cellulose acetate which degrades from 6000.
La pellicule de protection est très fine, de 1'ordre de quelques centièmes de millimètre, par exemple 2/100 mm, et elle se dégrade par rétraction, de sorte que les produits de dégradation occupent un volume très faible et sont incapables, même en venant s'insérer entre les éléments d'accrochage, d'en diminuer de façon appréciable le pouvoir accrochant. The protective film is very thin, of the order of a few hundredths of a millimeter, for example 2/100 mm, and it degrades by retraction, so that the degradation products occupy a very small volume and are incapable, even in coming to be inserted between the hooking elements, to appreciably reduce the hooking power.
Pour la mise en oeuvre de ce procédé, la bande se lcn l'invention est caractérisée par le fait que, sur sa face portant lesdits éléments d'accrochage, elle présente une zone marginale périphérique, de préférence continue démunie d'éléments d' accrochage, le long de laquelle elle porte le bord de la pellicule de protection qui recouvre les éléments d'accrochage ainsi contenus dans un espace ferme
De préférence , le bord de la pellicule de protection est en retrait par rapport au bord extrême de ladite face de la bande, de matière que ladite face puisse être collée directement sur la surface intérieure du moule
De préférence encore la bande est allongée et9 sur ses deux petits et -serminau elle reçoit et retient le bord correspondant de la pellicule de protection par une soudure ultrasonique, les éléments d'accrochage étant, dans cette zone, écrasés entre ladite face et ladite pellicule.For the implementation of this method, the strip according to the invention is characterized in that, on its face carrying said attachment elements, it has a peripheral marginal zone, preferably continuous, devoid of attachment elements. , along which it carries the edge of the protective film which covers the fastening elements thus contained in a firm space
Preferably, the edge of the protective film is set back with respect to the extreme edge of said face of the strip, so that said face can be glued directly to the interior surface of the mold.
Preferably also the strip is elongated and9 on its two small and -serminau it receives and retains the corresponding edge of the protective film by ultrasonic welding, the fastening elements being, in this zone, crushed between said face and said film .
On comprendra bien l'invention à la lecture de la description qui va suivre et en référence au dessin annexé dans lequel:
Fig 1 est une bue en coupe transversale d'une ban de selon un mode de réalisation de lçinv@n-tion
Fig 2' est une coupe longitudinale arrachée des ex trémités de la bande de la fig 1;
Fig 3 est une vue analogue à la fig 1 et montre la bande assujettie à 1 face intérieure du moule, avant moulage; et
Fig 4 est une vue analogue à la fig 1 et montre l'article moulé fini qui porte la bande de retenue d'un revêtement.The invention will be clearly understood on reading the description which follows and with reference to the appended drawing in which:
Fig 1 is a cross-sectional view of a bank of according to an embodiment of lvin @ n-tion
Fig 2 'is a longitudinal section cut away from the ends of the strip of Fig 1;
Fig 3 is a view similar to Fig 1 and shows the strip secured to 1 inner face of the mold, before molding; and
Fig 4 is a view similar to Fig 1 and shows the finished molded article which carries the retaining strip of a coating.
On a montré à la fig 3 une partie d'un moule 1,par exemple en aluminium, destiné à la fabrication d'un article m#u1é#,montré en partie à la fig 4. Cet article est, dans le mode d'application préféré de l'invention, une assise ou un dossier en mousse de polyuréthane , du type polyéther pour siège de véhicule. We have shown in fig 3 a part of a mold 1, for example aluminum, for the manufacture of an article m # u1é #, shown in part in fig 4. This article is, in the mode of preferred application of the invention, a seat or a backrest in polyurethane foam, of the polyether type for vehicle seat.
L'article est destiné à recevoir un revêtement 3 ( fig 4), par exemple une housse de siège dans l'application considérée. L'article moulé 2 retient le revêtement 3 par l'intermédiaire d'une bande accrochante 4 qui est assu jettie fixement à l'article moulé 2 et qui, sur sa face tournée vers le revêtement 3, porte des éléments d'accrochage 5, par exemple en forme de crochets, destinés à coopérer avec le verso du revêtement 3 qui présente, à cet effet, une structure 5 fibreuse ou pelucheuse, par exemple du type Jersey gratté. The article is intended to receive a covering 3 (fig 4), for example a seat cover in the application considered. The molded article 2 retains the coating 3 by means of a hanging strip 4 which is fixedly secured to the molded article 2 and which, on its face facing the coating 3, carries hooking elements 5, for example in the form of hooks, intended to cooperate with the back of the covering 3 which has, for this purpose, a fibrous or fluffy structure, for example of the scraped Jersey type.
De façon connue, la bande 4 est assujettie à l'article moulé 2, sur la face extérieure de celui-ci, lors de l'opération de moulage elle-m#me. Pour cela, comme montré à la fig S, la bande 4 est provisoirement fixée sur la face intérieure 7 de la cavité de moulue 8 ménagée dans le moule 1. Pour une telle liaison, par exemple, la bande 4, sur sa face extérieure portant les éléments d'accrochage 5, présente deux zones marginales longitudinales démunies d' éléments d'accrochage et portant une enduction adhésive 9 protégée par une pellicule 10 destinée à entre enlevée lors du collage de la bande 4 sur la face intérieure 7 du ioule. In known manner, the strip 4 is subject to the molded article 2, on the outside of the latter, during the molding operation itself. For this, as shown in FIG. S, the strip 4 is temporarily fixed on the internal face 7 of the ground cavity 8 formed in the mold 1. For such a connection, for example, the strip 4, on its external face bearing the fastening elements 5, has two longitudinal marginal zones devoid of fastening elements and carrying an adhesive coating 9 protected by a film 10 intended to be removed during gluing of the strip 4 on the inner face 7 of the ioule.
En variante, la bande pourrait porter des 'films métalliques en matière magnétique attirés par des aimants prévus dans la paroi du moule.Alternatively, the strip could carry metallic films of magnetic material attracted by magnets provided in the wall of the mold.
Pour la réception ie la bande 4, le moule 1 présente une cavité Il de réception des éléments d'accrochage 5 et, éventuellement, de part et d'autre de cette cavité, deux petites cavités latérales 12 pour la réception des zones marginales encollées de la bande 4, ces zones étant dégagées par enlèvement des pellicules de protection 10. La profondeur de la cavité ou gorge principale Il est telle que les éléments d'accrochage 5 peuvent venir porter contre son fond et que, si on prévoit les cavités latérales 12, la face de la semelle 13 opposée à celle qui porte les éléments d'accrochage affleure la face intérieure du moule i; les ca vités ou groges latérales 12 ont une profondeur qui correspond sensiblement à celle de la semelle 13. De la sorte, la face de la semelle 13 opposée à celle qui porte les éléments d'accrochage 5 prolonge la surface intérieure 7 sans solution de continpité; de plus, la bande 4 est maintenue en appui contre le moule 1, d'une part, par les zones latérales en appui dans les cavités 12 et, d'autre part, le cas échéant, au centre, par les éléments d'accrochage 5 en appui contre le fond de la cavité il. Ainsi, lors du moussage du produit de moulage, la pression de ce produit qui s 'éxer- ce sur la bande 4 ne produit aucune déformation de celle-ci. For reception, ie the strip 4, the mold 1 has a cavity II for receiving the fastening elements 5 and, optionally, on either side of this cavity, two small lateral cavities 12 for the reception of the glued marginal areas of the strip 4, these areas being released by removing the protective films 10. The depth of the main cavity or groove It is such that the hooking elements 5 can come to bear against its bottom and that, if the lateral cavities 12 are provided , the face of the sole 13 opposite to that which carries the fastening elements is flush with the internal face of the mold i; the side holes or grooves 12 have a depth which corresponds substantially to that of the sole 13. In this way, the face of the sole 13 opposite to that which carries the fastening elements 5 extends the internal surface 7 without solution of continpity ; in addition, the strip 4 is held in abutment against the mold 1, on the one hand, by the lateral zones in abutment in the cavities 12 and, on the other hand, if necessary, in the center, by the hooking elements 5 resting against the bottom of the cavity there. Thus, during the foaming of the molding product, the pressure of this product which is exerted on the strip 4 does not produce any deformation thereof.
Du fait que la face de la semelle 15 tournée vers l'intérieur du moule est au niveau de la face intérieure 7 de celui-ci, cette semelle est en saillie, d'une distance égale à son épaisseur, sur l'article fini 2, comme montré à la fig 4. Because the face of the sole 15 facing the inside of the mold is at the level of the internal face 7 of the latter, this sole is protruding, by a distance equal to its thickness, on the finished article 2 , as shown in fig 4.
Pour assurer une adhérence parfaite de la bande 4 avec le produit de moulage, on prévoit, de façon connue, des éléments d'ancrage 14 qui font saillie de la semelle 13, vers l'intérieur du moule, sensiblement à angle droit. Chaque élément d'ancrage comporte une tige ou pied 15 dont l'bxtremibé libre, éloignée de la semelle 13, porte une tête élargie 16. La tête 16 peut avoir toute forme ap proprié e. To ensure perfect adhesion of the strip 4 with the molding product, there are provided, in known manner, anchoring elements 14 which project from the sole 13, towards the inside of the mold, substantially at right angles. Each anchoring element comprises a rod or foot 15 whose free bmtremibé, remote from the sole 13, carries an enlarged head 16. The head 16 can have any suitable shape.
En variante, les éléments d'ancrage 14 pourraient être remplacés par touts structure appropriée, par exemple un jersey, grillage ou analogue facilitant l'ancrage du produit de moulage. Alternatively, the anchoring elements 14 could be replaced by any suitable structure, for example a jersey, mesh or the like facilitating the anchoring of the molding product.
Pour éviter que, pendant le moulage, le produit de moulage , quand il est encore à l'état liquide, pénètre entre les éléments d'accrochage 5 et s'y fixe en diminuant le pouvoir accrochant de ceux-ci,on prévoit,selon l'inven tion, une fine pellicule de protection continue 17 ( fig 1 à 3) qui recouvre les éléments d'accrochage et qui s'étend entre les zones marginales de fixation de la bande sur le moule. To avoid that, during molding, the molding product, when it is still in the liquid state, penetrates between the fastening elements 5 and is fixed therein by reducing the hanging power of these, provision is made, according to the invention, a thin continuous protective film 17 (fig 1 to 3) which covers the fastening elements and which extends between the marginal zones for fixing the strip to the mold.
La pellicule 17 s'arrête à distance des bords longitudinaux extrêmes de la semelle 13 ( fig 1 et 3), de ma niera à dégager une bordure libre pour l'adhésif 9 et sa pellicule de protection 10. The film 17 stops at a distance from the extreme longitudinal edges of the sole 13 (FIGS. 1 and 3), so that it will release a free border for the adhesive 9 and its protective film 10.
La pellicule 17 peut être assujettie à la semelle 13, sur les zones marginales longitudinales, par tout moyen approprié, par exemple par collage ou par soudage , notamment aux ultrasons. On utilisera de préférence cette dernière technique qui permet d'écraser une ou deux rangées d' éléments d'accrochage pendant le soudage lui-même pour la fixation de la pellicule sur la semelle. Sur ces petits cotés, on peut se dispenser de prévoir un adhésif pour coller la bande sur le moule, en raison de la faible largeur et de la raideur de la semelle. Mais on pourrait aussi, par exemple pour des bandes larges, araser la semelle pour enlever quelques rangées d'éléments d'accrochage 5 et fixer la bordure de la pellicule 17, suivie de l'adhésif 9 avec se pellicule de protection 19. The film 17 can be secured to the sole 13, on the longitudinal marginal zones, by any suitable means, for example by bonding or by welding, in particular by ultrasound. The latter technique will preferably be used which allows one or two rows of fastening elements to be crushed during the welding itself for fixing the film to the sole. On these short sides, one can dispense with the provision of an adhesive to adhere the strip to the mold, because of the small width and the stiffness of the sole. But it could also, for example for wide strips, level the sole to remove a few rows of fastening elements 5 and fix the edge of the film 17, followed by the adhesive 9 with protective film 19.
Suivant une caractéristique de l'invention, la pellicule 1, est en une matière qui se dégrade physiquement et chimiquement à une température supérieure à celle à laquelle le produit de moulage est stabilisé physique megt et chimiquement. According to a characteristic of the invention, the film 1 is made of a material which degrades physically and chemically at a temperature higher than that at which the molding product is physically and chemically stabilized.
Par exemple, dans le cas où l'article moulé 2 est en mousse de type polyéther, obtenue par un procédé dit à froid, dans lequel la mousse est stabilisée à partir d'environ 50ut, on peut utiliser une pellicule 17 en polyoléfine, notamment un polyéthylène souple ou rigide, qui se dégrade à partir de 1000C, ou encore un acétate de cellulose qui se dégrade à partir de 600C. For example, in the case where the molded article 2 is made of polyether type foam, obtained by a so-called cold process, in which the foam is stabilized from about 50 μm, a film 17 of polyolefin, in particular can be used a flexible or rigid polyethylene, which degrades from 1000C, or a cellulose acetate which degrades from 600C.
L'épaisseur de la pellicule 17 est très faible, de l'ordre de quelques centièmes de millimètre, par exemple 2/100 mm. The thickness of the film 17 is very small, of the order of a few hundredths of a millimeter, for example 2/100 mm.
Avant son insertion dans le moule 1 (fig 1 et 2) la bande 4 porte la pellicule 17 qui enferme et protège les éléments d'accrochage 5, à la manière d'une enveloppe ou d'un cocon. Before its insertion into the mold 1 (fig 1 and 2) the strip 4 carries the film 17 which encloses and protects the fastening elements 5, in the manner of an envelope or a cocoon.
Quand la bande 4, avec sa pellicule 17; est placée dans le moule ( fig 3), elle y est retenue provisoirement par l'adhésif 9, ou tout moyen équivalent, les éléments d'accrochage 5 étant recouverts par la pellicule 17 et s'étendant dana la cavité 11, éventuellement munie d évents 18. When strip 4, with its film 17; is placed in the mold (fig 3), it is temporarily retained there by the adhesive 9, or any equivalent means, the fastening elements 5 being covered by the film 17 and extending into the cavity 11, possibly provided with vents 18.
Pendant le processus de moulage, le produit liquide de moulage est introduit dans la cavité de moulage 8 et, à mesure que la température augmente, sous l'effet d' un chauffage commandé, il se stabilise graduellement, à la fois dans sa forme et dans sa structure chimique. Tant qu'il est liquide ou plus ou moins visqueux, c'est-à-dire à température relativement basse, la pellicule 17 reste intacte, de même que sa liaison avec la semelle 1f, et interdit toute pénétration du produit dans l'espace 19
ferme qu'elle définit avec la semelle 13 et qui contient
les éléments d'accrochage 5. Ces derniers sont ainsi protégés tant que le produit de moulage est fluide. A mesure que la température continue à croître, par commande
extérieure, la matière de la pellicule 17 commence alors à se dégrader.Etant donné la faible épaisseur de la pel licule 17, cette dégradation se manifeste par une retraction, phénomène en lui-même connu, qui donne naissance à un volume de matière extrêmement faible. Cette matière de dégradation, même si elle se dépose totalement sur les éléments d'accrochage 5, est d'un volume très faible, incapable d'encrasser suffisamment ceux-ci pour en diminuer de façon appréciable ou significative le pouvoir accrochant.During the molding process, the liquid molding product is introduced into the molding cavity 8 and, as the temperature increases, under the effect of a controlled heating, it gradually stabilizes, both in its shape and in its chemical structure. As long as it is liquid or more or less viscous, that is to say at a relatively low temperature, the film 17 remains intact, as does its connection with the sole 1f, and prevents any penetration of the product into space 19
firm which it defines with the sole 13 and which contains
the attachment elements 5. The latter are thus protected as long as the molding product is fluid. As the temperature continues to rise, by command
exterior, the material of the film 17 then begins to degrade. Given the small thickness of the pelicle 17, this degradation is manifested by a retraction, a phenomenon in itself known, which gives rise to an extremely small volume of material . This degradation material, even if it is completely deposited on the hooking elements 5, is of a very small volume, incapable of clogging them enough to appreciably or significantly reduce the hooking power.
A la fin du processus de moulage, la pellicule 17 est totalement dégradée et détruite , les produits de dégradation s'étant déposes pour leur partie solide, sur la semelle 13, sur le éléments d'accrochage 5 et sur la surface de la cavité 11, de sorte que, au démoulage, les éléments 5 sont completement dégagés et peuvent ultérieurement recevoir le revêtement 3 sans aucune opération supplémentaire et coûteuse de nettoyage. At the end of the molding process, the film 17 is completely degraded and destroyed, the degradation products having deposited for their solid part, on the sole 13, on the fastening elements 5 and on the surface of the cavity 11 , so that, on demolding, the elements 5 are completely released and can subsequently receive the coating 3 without any additional and costly cleaning operation.
Ainsi, grâce à l'invention qui prévoit la pellicule 17 constituant une enveloppe fermée et étanche
on protège en toute certitude les éléments d'accrochage 5 contre un encrassement par le produit de moulage, cette pellicule ~ se détruisant automatiquement par effet thermi
que après que le produit de moulage s'est stabilisé. Thus, thanks to the invention which provides the film 17 constituting a closed and sealed envelope
it protects with certainty the fastening elements 5 against fouling by the molding product, this film ~ destroying itself automatically by thermal effect
only after the molding product has stabilized.
Claims (8)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8319926A FR2556271B1 (en) | 1983-12-13 | 1983-12-13 | METHOD FOR FIXING A STRIP OR THE LIKE HAVING HANGING ELEMENTS ON AN ARTICLE MOLDING, AND STRIP FOR IMPLEMENTING SAME |
| CA000465312A CA1256278A (en) | 1983-12-13 | 1984-10-12 | Gripping strip to be fixed to an article in the process of molding said article, and means for fixing said strip |
| US06/676,951 US4693921A (en) | 1983-12-13 | 1984-11-30 | Fastening tape designed to be attached to a molded article during molding, and its attaching method |
| DE8484402547T DE3470683D1 (en) | 1983-12-13 | 1984-12-11 | Strip fastener to be fixed on a moulded article during the moulding process, and method of attaching it |
| DE198484402547T DE145603T1 (en) | 1983-12-13 | 1984-12-11 | HOOK CLASP TAPE TO BE FASTENED ON THE CASTING PART AND METHOD FOR ITS FASTENING DURING MOLDING. |
| EP84402547A EP0145603B1 (en) | 1983-12-13 | 1984-12-11 | Strip fastener to be fixed on a moulded article during the moulding process, and method of attaching it |
| JP59261923A JPS60179003A (en) | 1983-12-13 | 1984-12-13 | Fixing tape constituted so as to be attached to molded product during molding and its attachment method |
| US07/093,801 US4802939A (en) | 1983-12-13 | 1987-09-04 | Method for attaching a fastening tape to a molded article |
| US07/295,778 US4933035A (en) | 1983-12-13 | 1989-01-11 | Method of attaching a fastening tape to a molded article and the fastening tape used for such |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8319926A FR2556271B1 (en) | 1983-12-13 | 1983-12-13 | METHOD FOR FIXING A STRIP OR THE LIKE HAVING HANGING ELEMENTS ON AN ARTICLE MOLDING, AND STRIP FOR IMPLEMENTING SAME |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2556271A1 true FR2556271A1 (en) | 1985-06-14 |
| FR2556271B1 FR2556271B1 (en) | 1987-06-12 |
Family
ID=9295119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8319926A Expired FR2556271B1 (en) | 1983-12-13 | 1983-12-13 | METHOD FOR FIXING A STRIP OR THE LIKE HAVING HANGING ELEMENTS ON AN ARTICLE MOLDING, AND STRIP FOR IMPLEMENTING SAME |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS60179003A (en) |
| FR (1) | FR2556271B1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986003164A1 (en) * | 1984-11-20 | 1986-06-05 | Velcro Usa Inc. | Method and apparatus for adapting separable fasteners for attachment to other objects |
| US4726975A (en) * | 1985-07-17 | 1988-02-23 | Actief N.V. Abn Trust Co. | Method and apparatus for adapting separable fasteners for attachment to other objects |
| US4784890A (en) * | 1986-06-20 | 1988-11-15 | Minnesota Mining And Manufacturing Company | Fastener assembly with peripheral temporary attachment layer |
| US4933224A (en) * | 1985-07-17 | 1990-06-12 | Velcro Industries, B.V. | Method for adapting separable fasteners for attachment to other objects |
| FR2989629A1 (en) * | 2012-04-20 | 2013-10-25 | Dimindis | Ornament part for body of automobile i.e. car, has flexible material body with fastener, where recess of body is placed between central part and circumference zone such that body comes out of guard of fastener around central part |
| CN114286631A (en) * | 2019-08-30 | 2022-04-05 | Ykk株式会社 | Face connector |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0637712Y2 (en) * | 1987-09-09 | 1994-10-05 | 株式会社クラレ | Fastening member |
| CN104602562A (en) * | 2012-09-03 | 2015-05-06 | 可乐丽粘贴扣带株式会社 | Mold-in cast male surface fastener and method for fabrication of foam resin cast body with male surface fastener employing same |
| US20160052433A1 (en) | 2013-03-27 | 2016-02-25 | Kuraray Fastning Co., Ltd. | Sheet having tilted stems on both surfaces thereof and seat using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1601166A (en) * | 1968-03-06 | 1970-08-10 | Clothing mattress carcass with foam | |
| US3870741A (en) * | 1970-04-20 | 1975-03-11 | Goodyear Tire & Rubber | Method of making a foam package |
| FR2423666A1 (en) * | 1978-02-13 | 1979-11-16 | Aplix Sa | Mfg. foam mouldings with surface patches of hooked pile tape - for integral anchorages to secure fabric covers |
| FR2463870A1 (en) * | 1979-08-20 | 1981-02-27 | Faure Bertrand | Composite tapes for hooked pile anchorages for upholstery covers etc. - having a coarse fabric backing for enhanced adhesive grip |
| FR2466330A1 (en) * | 1979-10-05 | 1981-04-10 | Roth Sa Freres | Seat cushions moulded with integral surface tapes of piled fabric - for anchoring close-fitted covers bearing hooked pile tabs |
-
1983
- 1983-12-13 FR FR8319926A patent/FR2556271B1/en not_active Expired
-
1984
- 1984-12-13 JP JP59261923A patent/JPS60179003A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1601166A (en) * | 1968-03-06 | 1970-08-10 | Clothing mattress carcass with foam | |
| US3870741A (en) * | 1970-04-20 | 1975-03-11 | Goodyear Tire & Rubber | Method of making a foam package |
| FR2423666A1 (en) * | 1978-02-13 | 1979-11-16 | Aplix Sa | Mfg. foam mouldings with surface patches of hooked pile tape - for integral anchorages to secure fabric covers |
| FR2463870A1 (en) * | 1979-08-20 | 1981-02-27 | Faure Bertrand | Composite tapes for hooked pile anchorages for upholstery covers etc. - having a coarse fabric backing for enhanced adhesive grip |
| FR2466330A1 (en) * | 1979-10-05 | 1981-04-10 | Roth Sa Freres | Seat cushions moulded with integral surface tapes of piled fabric - for anchoring close-fitted covers bearing hooked pile tabs |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986003164A1 (en) * | 1984-11-20 | 1986-06-05 | Velcro Usa Inc. | Method and apparatus for adapting separable fasteners for attachment to other objects |
| US4726975A (en) * | 1985-07-17 | 1988-02-23 | Actief N.V. Abn Trust Co. | Method and apparatus for adapting separable fasteners for attachment to other objects |
| US4933224A (en) * | 1985-07-17 | 1990-06-12 | Velcro Industries, B.V. | Method for adapting separable fasteners for attachment to other objects |
| US4784890A (en) * | 1986-06-20 | 1988-11-15 | Minnesota Mining And Manufacturing Company | Fastener assembly with peripheral temporary attachment layer |
| FR2989629A1 (en) * | 2012-04-20 | 2013-10-25 | Dimindis | Ornament part for body of automobile i.e. car, has flexible material body with fastener, where recess of body is placed between central part and circumference zone such that body comes out of guard of fastener around central part |
| CN114286631A (en) * | 2019-08-30 | 2022-04-05 | Ykk株式会社 | Face connector |
| CN114286631B (en) * | 2019-08-30 | 2024-02-20 | Ykk株式会社 | Surface connecting piece |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2556271B1 (en) | 1987-06-12 |
| JPS60179003A (en) | 1985-09-12 |
| JPH0360291B2 (en) | 1991-09-13 |
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| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |