FR2566316A2 - Method for the attachment of a sheet or the like equipped with elements for fastening to an article during moulding, and sheet for its implementation - Google Patents
Method for the attachment of a sheet or the like equipped with elements for fastening to an article during moulding, and sheet for its implementation Download PDFInfo
- Publication number
- FR2566316A2 FR2566316A2 FR8410033A FR8410033A FR2566316A2 FR 2566316 A2 FR2566316 A2 FR 2566316A2 FR 8410033 A FR8410033 A FR 8410033A FR 8410033 A FR8410033 A FR 8410033A FR 2566316 A2 FR2566316 A2 FR 2566316A2
- Authority
- FR
- France
- Prior art keywords
- strip
- film
- elements
- face
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- 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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- 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
- 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
-
- 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
-
- 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)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
L'invention est relative à la fixation d'une bande, notamment un ruban auto-agrippant, munie sur une face d'éléments d'accrochage, sur un article à mouler auquel elle adhè- re, par son autre face, lors de l'opération de moulage ellemême . The invention relates to the fixing of a strip, in particular a self-gripping tape, provided on one side with hooking elements, on a molding 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 mous- se, par exemple une assise ou un dossier de siège d'automobile, 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 an article molded in foam, for example a seat or a backrest of an automobile seat, this strip being intended to retain, by its external face provided attachment elements, an article provided with additional attachment elements, in particular a cover-like coating.
L'invention concerne donc une bande auto-agrippante destinée à autre fixée en cours de moulage sur un article à mouler
Elle a pour but d'apporter des perfectionnements à la demande de brevet principal9 ces perfectionnements venant en complément de ceux du brevet principal 9 lesquels consis taient notamment, pour une bande comportant une semelle dont une face porte des éléments d'accrochage tournés vers lwexté- rieur du moule, et la bande prenant appui sur la surface in- térieure du moule le long d'une zone marginale périphérique dépourvue d'éléments d'accrochage, à faire porter à la ban- de, entre la surface intérieure du moule et sa semelle portant lesdits éléments d'accrochage9 une fine pellicule provisoire de protection continue qui recouvre les éléments d'accrochage et qui s 'détend jusqu'à ladite zone marginale pour définir un espace fermé et étanche de protection desdits éléments pendant le moulage o
Suivant un mode de réalisation particulier décrit au brevet principal9 la pellicule provisoire de protection est en une matière qui se dégrade à une température swpe- rieure à celle à partir de laquelle le produit de moulage se stabilise physiquement et chimiquement 9 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 protection non dégradée et que9 lorsque le produit est stabilisé, la pellicule se dégrade et disparait sous 1effet de ll augmentation de température pour découvrir lesdits éléments d'accrochage.The invention therefore relates to a hook-and-loop strip intended for other attachment during molding on an article to be molded.
It aims to bring improvements to the main patent application9 these improvements coming in addition to those of the main patent 9 which consisted in particular, for a strip comprising a soleplate of which one face carries latching elements turned towards the text- of the mold, and the strip resting on the interior surface of the mold along a peripheral marginal zone devoid of fastening elements, to be worn on the strip, between the interior surface of the mold and its sole bearing said fastening elements9 a thin provisional continuous protection film which covers the fastening elements and which relaxes up to said marginal zone to define a closed and sealed space for protection of said elements during molding o
According to a particular embodiment described in the main patent9 the provisional protective film is made of a material which degrades at a temperature higher than that from which the molding product stabilizes physically and chemically 9 so that, as long as the molding product is still liquid, it cannot be inserted between said face of the strip and the undegraded protective film and only when the product is stabilized, the film degrades and disappears under the effect of the increase in temperature to discover said hooking elements.
La présente invention vise à éviter d'avoir recours à une technique de chauffage, simultanée ou consécutive à la fin du moulage, pour éliminer la pellicule provisoire de protection. The present invention aims to avoid having to use a heating technique, simultaneous or consecutive at the end of the molding, to remove the temporary protective film.
A cet effet, la bande selon l'invention est caractérisée par le fait que la pellicule provisoire de protection est collée par ses bords au moins sur les zones marginales longitudinales de la face de la semelle portant les éléments d'accrochage, ces zones étant exemptes desdits éléments et la pellicule pouvant ttre simplement détachée de ladite face après le moulage pour dégager les éléments d'ace crochage. To this end, the strip according to the invention is characterized in that the temporary protective film is bonded by its edges at least to the longitudinal marginal zones of the face of the sole carrying the fastening elements, these zones being free said elements and the film can be simply detached from said face after molding to release the elements of hooking space.
Le détachement de la pellicule peut se faire soit par décollement, soit par division de la pellicule à sa jonc- tion entre ses parties collées et le reste de la pellicule, cette division pouvant autre obtenue par arrachement ou par découpe
Le collage initial de la pellicule peut se faire soit à l'aide d'un adhésif d'apport, soit par action physico- chimique, notamment par soudage aux ultrasons avec écr##e- ment des éléments doacerbehage dans les zones de collage.The detachment of the film can be done either by detachment, or by division of the film at its junction between its glued parts and the rest of the film, this division being able to be obtained by tearing or cutting.
The initial bonding of the film can be carried out either with the aid of a filler adhesive, or by physicochemical action, in particular by ultrasonic welding with crushing elements in the bonding zones.
Avantageusement on interpose, entre la partie cen- trale non collée de la pellicule et le sommet des éléments d'accrochage qu'elle recouvre, un feuillard relativement Pi~ gide, par exemple métallique. Ce feuillard a pour r8le5 dg une part, de raidir 19 ensemble composite constitué par la bande et la pellicule pour son insertion dans le moule et, d'autre part, de faciliter le détachement de la pellicule après le moulage en servant d'élément de préhension et de poussée de la pellicule.Un autre roule du feuillard9 quand il est en matière magnétique, est d'assurer le maintien de la bande dans le moule à l'aide d'aimants prévus dans ces lui-ci. Advantageously, between a non-glued central part of the film and the top of the fastening elements which it covers, there is interposed a relatively Pi ~ gide strip, for example metallic. This strip has for r8le5 dg on the one hand, to stiffen 19 composite assembly constituted by the strip and the film for its insertion in the mold and, on the other hand, to facilitate the detachment of the film after molding by serving as element of gripping and pushing of the film. Another roll of the strip 9 when it is made of magnetic material, is to ensure the maintenance of the strip in the mold using magnets provided in them.
Avantageusement9 la pellicule est également collée, de la même façon, sur les extrémités transversales de la bande. Advantageously9 the film is also glued, in the same way, to the transverse ends of the strip.
Le procédé selon la présente invention, pour la fixation de la bande ci dessus à l'article à mouler,consiste
- à coller par ses bords la pellicule provisoire de protection au moins sur les zones marginales longitudinales de la face de la semelle portant les éléments d'accrochage, ces zones étant exemptes desdits éléments;
- à assujettir la bande ainsi protégée dans le moule;
- à réaliser l'opération de moulage - à à enlever du moule l'ensemble constitué par le pro- duit moulé et la bande qui y est fixée; et
- à détacher la pellicule de ladite face de la bande pour dégager les éléments d'accrochage.The method according to the present invention, for fixing the above strip to the article to be molded, consists
- Gluing by its edges the temporary protective film at least on the longitudinal marginal zones of the face of the sole carrying the fastening elements, these zones being free of said elements;
- To subject the band thus protected in the mold;
- to carry out the molding operation - to remove from the mold the assembly constituted by the molded product and the strip which is attached thereto; and
- detaching the film from said face of the strip in order to release the fastening elements.
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 vue en coupe transversale d'une bande selon un mode de réalisation de 11 invention;
Fig 2 est une coupe longitudinale arrachée des extrémités de la bande de la fig 1;
Fig 3 est une vue analogue à la fig 1 et montre la bande assujettie à la face intérieure du moule, avant moulage; et
Fig 4 est une vue analogue à la fig 1 et montre 1' article moulé fini qui porte la bande de retenue d'un brevet tement.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 strip according to an embodiment of the invention;
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 the 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 patent.
On a montré à la fig 3 une partie d'un moule 1,par exemple en aluminium, destiné à la fabrication d'un article moulé 29 montré en partie à la fig 4 Cet article est, dans le mode d'applicatiôn préféré de S'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 of aluminum, intended for the manufacture of a molded article 29 shown in part in fig 4 This article is, in the preferred mode of application of S invention, a seat or a backrest in polyurethane foam, of the polyether type, for a vehicle seat.
L'article est destiné à recevoir un rev8tement 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 assujettie fixement à 11 article moulé 2 et qui 9 sur sa face tournée vers le revêtement 3, porte des éléments d'accrochage vs par exemple en forme de crochets, destinés à coopérer avec le verso du revetement 3 qui présente, à cet effet, une structure 6 fibreuse ou pelucheuse, par exemple du type jersey gratté formant des boucles. The article is intended to receive a coating 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 9 on its face facing the coating 3, carries hooking elements vs for example in form of hooks, intended to cooperate with the back of the covering 3 which has, for this purpose, a fibrous or fluffy structure 6, for example of the scraped jersey type forming loops.
De façon connue9 la bande 4 est assujettie à l"ar- ticle moulé 29 sur la face extérieure de celui-ci, lors de l'opération de moulage elle-meme Pour cela9 comme montré à la fig 3, la bande 4 est provisoirement fixée sur la face intérieure 7 de la cavité de moulage 8 ménagée dans le moule 10 Pour une telle liaison, suivant un exemple non representé, la bande 4 présente9sur sa face extérieure portant les éléments d'accrochage 5, deux zones marginales longitudinales démunies d'éléments d'accrochage et portant une enduction adhésive protégée par une pellicule destinée à autre enlevée lors du collage de la bande 4 sur la face intérieure 7 du moule.Mais, comme décrit ci-après en référence au mode de réalisation préféré de l'invention, la liaison peut se faire par voie magnétique
Pour la réception de la bande 49 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 zon layes marginales longitudinales de la bande 49 ces zones étant dégagées par enlèvement des pellicules de protection.In a known manner9 the strip 4 is subject to the molded article 29 on the external face of the latter, during the molding operation itself For this9 as shown in FIG. 3, the strip 4 is temporarily fixed on the inner face 7 of the molding cavity 8 formed in the mold 10 For such a connection, according to an example not shown, the strip 4 has 9 on its outer face carrying the fastening elements 5, two longitudinal marginal zones devoid of elements of attachment and carrying an adhesive coating protected by a film intended for other removed during the bonding of the strip 4 on the inner face 7 of the mold. But, as described below with reference to the preferred embodiment of the invention, the connection can be made by magnetic means
For the reception of the strip 49 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 longitudinal marginal lay zones of the strip 49 these areas being released by removing the protective films.
La profondeur de la cavité ou gorge principale Il est telle que les éléments d'accrochage 5 peuvent venir porter contre son fond et que9 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 1; les cavités ou gorges latérales 12 ont une profondeur qui corses pond sensiblement à l'épaisseur de la semelle 130 De la soro te, la face de la semelle 13 opposée à celle qui porte les éléments d'accrochage 5 prolonge la surface intérieure 7 sans solution de continuité; 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 11. Ainsi, lors du moussage du produit de moulage, la pression de ce produit qui s' exerce sur la bande 4 ne produit aucune déformation de celle-ci
Du fait que la face de la semelle 13 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.The depth of the main cavity or groove It is such that the fastening elements 5 can come to bear against its bottom and that9 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 inner face of the mold 1; the lateral cavities or grooves 12 have a depth which corsages lays substantially to the thickness of the sole 130 From the base, the face of the sole 13 opposite to that which carries the fastening elements 5 extends the interior surface 7 without solution continuity; 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 in abutment against the bottom of the cavity 11. 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.
Because the face of the sole 13 facing the interior of the mold is at the interior face 7 thereof, this sole is projecting, 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 connue9 des éléments d'ancrage 14 qui font saillie de la semelle 13, vers l'intérieur du moule, sensiblement ê angle doit Chaque élément d'ancrage comporte une tige ou pied 15 dont l'extrémités libre , éloignée de la semelle 13,porte une tête élargie 16. To ensure perfect adhesion of the strip 4 with the molding product, there are provided, in a known manner9 anchoring elements 14 which project from the sole 13, towards the interior of the mold, substantially at an angle must each element anchoring comprises a rod or foot 15 whose free ends, remote from the sole 13, carries an enlarged head 16.
La tête 16 peut avoir toute forme appropriée.The head 16 can have any suitable shape.
En variante, les éléments d'ancrage 14 pourraient être remplacés par toute structure appropriée, par exemple un jersey, grillage ou analogue facilitant l'ancrage du produit de moulage0
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-ci9 on prévoit, selon l'invention, 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 longitudinales de la bande et sur toute la longueur de celle-ci,
La pellicule 17 est collée à la semelle 139 sur les zones marginales longitudinales, par tout moyen approprié, par exemple par un adhésif d'apport ou par soudage, notamo ment aux ultrasons avec écrasement des éléments d'accrochage dans les zones de collage. Sur les petits cotés (fig 2)9 la pellicule 17 est également collée sur la semelle 139 démunie d'éléments d'accrochage sur ses deux zones marginales transversales. 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.
To avoid that, during molding, the molding product, when it is still in the liquid state, penetrates between the fastening elements 5 and fixes thereon by reducing the hanging power of these9 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 longitudinal marginal zones of the strip and over the entire length thereof;
The film 17 is bonded to the sole 139 on the longitudinal marginal zones, by any suitable means, for example by a filler adhesive or by welding, notably with ultrasound with crushing of the fastening elements in the bonding zones. On the short sides (fig 2) 9 the film 17 is also bonded to the sole 139 devoid of attachment elements on its two transverse marginal zones.
La pellicule 17 définit ainsi avec la semelle 13 un espace fermé 19 qui renferme et protège les éléments d' accrochage 5. The film 17 thus defines with the sole 13 a closed space 19 which encloses and protects the fastening elements 5.
Suivant une autre caractéristique de l'invention, on place dans l'espace 19, entre le sommet des éléments d' accrochage 5 et la pellicule 17, un feuillard 20 relativement rigide. Ce feuillard a la même largeur (fig 1) et la même longueur (fig 2) que la partie de la semelle 13 portant des éléments d'accrochage 59 Ce feuillard est par exemple en feuille métallique de quelques dixièmes de millimètre d'é- paisseur. Avantageusement, il est en un matériau magnétique, par exemple en tôle à base de Zer9 pour pouvoir etre attiré par des aimants 21 noyés dans le fond de la cavité Il du moule 1.On assure ainsi le maintien en place de la bande 4 pendant le moulage (fig 3)
Le feuillard 20, outre son rale éventuel de moyen de maintien de la bande dans la cavité 119 donne à l'ensem- ble composite constitué par la bande b proprement dite et la pellicule 17 une raideur facilitant la mise en place de cet ensemble dans le moule 1.Par ailleurs 9 après l'opération de moulage, il facilite le détachement de la pellicule 57 d'avec la bande-4 ancrée dans l'article moulé 20
le détachement de la pellicule 17 peut se faire soit par décollement des zones marginales 9 soit par arrache- ment, soit encore par découpe de la pellicule On a recours au décollement Si l'adhérence entre la pellicule 17 et les zones marginales de la semelle 13 n'est pas trop forte;; on a recours à l'arrachement s'il importe peu que subsiste éventuellement, sur chacune des zones marginales longitedinam les de la semelle, une languette 17a (fig 4) correspondant au reliquat non enlevé de la pellicule 9 dans les deux cas ci-dessus, après que la pellicule 17 a été entaillée sur l' un des petits cotés de la bande 4, on saisit à la main les bords superposés du feuillard et de la pellicule et on tire l'ensemble en le soulevant progressivement, à la manière d'un pelage, ce qui provoque l'enlèvement de la pellicule, avec ou sans les parties marginales de la pellicule initialement collées à la semelle 13 Dans ces opérations, les tords du feuillard constituent des bords d'appui favorisant le décollement. tans le cas d'une division de la pellicule ,les bords longitudinaux du feuillard constituent en quelque sorte deux arêtes d'appui ou de coupe le long ou près desquelles s'effectue l'arrachement Dans le troisième cas, on peut passer une lame coupante en s'appuyant sur les bords longitudinaux du feuillard, ou encore au voisinage immédiat des parties marginales collées de la pellicule pour obtenir une séparation nette; après la découpe, il subsiste les lanm guettes 17a à bords nets; pour les petits côté de la bande, on peut procéder de me me o
Avant son insertion dans le moule 1 (fig 1 et 2), la bande 4 porte Sa pellicule 17 qui enferme et protège les éléments d'accrochage 5, à la manière d'une enveloppe ou de un cocon, dans l'espace fermé 19.According to another characteristic of the invention, a relatively rigid strip 20 is placed in the space 19, between the top of the fastening elements 5 and the film 17. This strip has the same width (fig 1) and the same length (fig 2) as the part of the sole 13 carrying hooking elements 59 This strip is for example made of metal foil a few tenths of a millimeter thick . Advantageously, it is made of a magnetic material, for example of sheet metal based on Zer9 in order to be able to be attracted by magnets 21 embedded in the bottom of the cavity II of the mold 1. This thus ensures that the strip 4 is held in place during the molding (fig 3)
The strip 20, in addition to its possible rale of means for holding the strip in the cavity 119, gives the composite assembly constituted by the strip b proper and the film 17 a stiffness facilitating the positioning of this assembly in the mold 1. Furthermore 9 after the molding operation, it facilitates the detachment of the film 57 from the strip-4 anchored in the molded article 20
the detachment of the film 17 can be done either by detachment of the marginal zones 9 or by tearing off, or even by cutting of the film. Removal is used If the adhesion between the film 17 and the marginal zones of the sole 13 is not too strong ;; tearing is used if it matters little that there eventually remains, on each of the marginal zones longitedinam the sole, a tongue 17a (fig 4) corresponding to the residue not removed from the film 9 in the two cases above , after the film 17 has been cut on one of the short sides of the strip 4, the superimposed edges of the strip and the film are gripped by hand and the assembly is pulled out by gradually lifting it up, in the same way as 'A peeling, which causes the removal of the film, with or without the marginal parts of the film initially bonded to the sole 13 In these operations, the twists of the strip constitute bearing edges promoting detachment. in the case of a division of the film, the longitudinal edges of the strip constitute in a way two support or cutting edges along or near which the tearing takes place In the third case, a cutting blade can be passed by resting on the longitudinal edges of the strip, or else in the immediate vicinity of the glued marginal portions of the film to obtain a clear separation; after cutting, there remain the lanm guets 17a with sharp edges; for the small side of the strip, we can proceed from me o
Before its insertion into the mold 1 (fig 1 and 2), the strip 4 carries its film 17 which encloses and protects the attachment elements 5, in the manner of an envelope or a cocoon, in the closed space 19 .
Quand la bande 4 avec sa pellicule 17, est placée dans le moule ( fig 3), elle y est retenue provisoirement par l'adhésif ou les aimants 21, les éléments d'accrochage 5 étant recouverts par la pellicule 17 et s'étendant dans la cavité 11, éventuellement munie d'évents 180
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 chauf- fage commandé, il se stabilise graduellement, à la fois dans sa forme et dans sa structure chimique Pendant le moulage, la pellicule 17 interdit toute pénétration du produit dans l'espace 19o les éléments d'accrochage 5 sont ainsi protégés contre la pénétration du liquide de moulage.When the strip 4 with its film 17 is placed in the mold (fig 3), it is temporarily retained there by the adhesive or the magnets 21, the fastening elements 5 being covered by the film 17 and extending in the cavity 11, possibly provided with vents 180
During the molding process, the liquid molding product is introduced into the molding cavity 8 and, as the temperature increases, under the effect of controlled heating, it gradually stabilizes, both in its shape and its chemical structure During molding, the film 17 prohibits any penetration of the product into the space 19o the attachment elements 5 are thus protected against the penetration of the molding liquid.
Bien entendu, la pellicule 17 est choisie en une matière résistant aux températures de moulage
A la fin de l'opération de moulage, l'article 2, portant la bande 4 et la pellicule 17, est sorti du moule 1, après quoi-on enlève la pellicule comme indiqué ci-dessuso Of course, the film 17 is chosen from a material resistant to molding temperatures
At the end of the molding operation, the article 2, carrying the strip 4 and the film 17, is removed from the mold 1, after which the film is removed as indicated above.
Claims (6)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8410033A FR2566316B2 (en) | 1984-06-26 | 1984-06-26 | 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 |
| 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 |
| 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 |
| 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 |
|---|---|---|---|
| FR8410033A FR2566316B2 (en) | 1984-06-26 | 1984-06-26 | 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 |
|---|---|
| FR2566316A2 true FR2566316A2 (en) | 1985-12-27 |
| FR2566316B2 FR2566316B2 (en) | 1988-10-28 |
Family
ID=9305434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8410033A Expired FR2566316B2 (en) | 1983-12-13 | 1984-06-26 | METHOD FOR FIXING A STRIP OR THE LIKE HAVING HANGING ELEMENTS ON AN ARTICLE MOLDING, AND STRIP FOR IMPLEMENTING SAME |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2566316B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933224A (en) * | 1985-07-17 | 1990-06-12 | Velcro Industries, B.V. | Method for adapting separable fasteners for attachment to other objects |
| ES2145664A1 (en) * | 1995-12-22 | 2000-07-01 | Ykk Corp | Molded surface fastener with continuous ribs on rear surface |
| WO2019179883A1 (en) * | 2018-03-17 | 2019-09-26 | Gottlieb Binder Gmbh & Co. Kg | Adhesive closure part |
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 |
-
1984
- 1984-06-26 FR FR8410033A patent/FR2566316B2/en not_active Expired
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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933224A (en) * | 1985-07-17 | 1990-06-12 | Velcro Industries, B.V. | Method for adapting separable fasteners for attachment to other objects |
| ES2145664A1 (en) * | 1995-12-22 | 2000-07-01 | Ykk Corp | Molded surface fastener with continuous ribs on rear surface |
| WO2019179883A1 (en) * | 2018-03-17 | 2019-09-26 | Gottlieb Binder Gmbh & Co. Kg | Adhesive closure part |
| US11659899B2 (en) | 2018-03-17 | 2023-05-30 | Gottlieb Binder Gmbh & Co. Kg | Touch fastener part |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2566316B2 (en) | 1988-10-28 |
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