EP1127517A1 - A method of manufacturing an anti-laceration cover for a seat - Google Patents

A method of manufacturing an anti-laceration cover for a seat Download PDF

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Publication number
EP1127517A1
EP1127517A1 EP01400450A EP01400450A EP1127517A1 EP 1127517 A1 EP1127517 A1 EP 1127517A1 EP 01400450 A EP01400450 A EP 01400450A EP 01400450 A EP01400450 A EP 01400450A EP 1127517 A1 EP1127517 A1 EP 1127517A1
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EP
European Patent Office
Prior art keywords
coating
flexible
mold
laceration
layer
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Granted
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EP01400450A
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German (de)
French (fr)
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EP1127517B1 (en
Inventor
Yves Andreux
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Compin SAS
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Compin SAS
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/24—Upholstered seats
    • A47C7/26—Upholstered seats with reinforcement of the external layer of the upholstery, e.g. vandal resistant

Definitions

  • the invention relates to a manufacturing process. anti-laceration coating for seat public transport or the like, as well as an element seat comprising this coating.
  • anti-laceration coatings seats used in public places and in public transport usually includes a metal frame fixed by gluing on the face inside of a cover intended to cover a elastically deformable lining forming part a seat element.
  • these anti-laceration coatings are made flat, the metal reinforcement being deposited on a layer of adhesive material itself deposited on a sheet of textile or similar material intended to form the cover, and then by hot polymerization of the adhesive material.
  • the object of the present invention is in particular to bring improvements to this process of manufacturing.
  • an anti-laceration coating of the type mentioned above this covering comprising a reinforcement flexible metal bonded by an adhesive material on a sheet of flexible material which forms the face exterior of the coating, the process of shaping the coating during manufacture and, for this, to successively file the different constituents of the coating in a mold the shape of a seat element to cover, to close the mold, to open it after polymerization or crosslinking of the adhesive material and demolding the coating thus obtained, characterized in that the adhesive material is polymerizable or crosslinkable to room temperature in a relatively short time, in the order of a few minutes.
  • the hot curing of the adhesive material lasted 40 to 50 minutes approximately for example, so that, taking into account the heating and mold cooling, making a anti-laceration coating in a mold immobilized the mold for a period of at least one hour, this which required having a large fleet of mussels for manufacture of anti-laceration coatings at normal rate.
  • the cold curing of hard adhesive material a few minutes, typically 2 to 4 minutes, so that a mold is only immobilized for 6 about minutes for the production of a coating anti-laceration, which allows a normal rate of coating manufacturing with a reduced fleet of mussels.
  • the adhesive material cold polymerizable is a polyurethane or a silicone.
  • These adhesive materials have the advantage of good heat resistance (for example up to 100 ° C approx.) so that the coatings resist well to warm up by the sun, to stay flexible after polymerization, to have good resistance to fire, and be rigid enough in a short time to allow opening of molds and demoulding of the coatings 2 to 4 minutes after closing the molds.
  • the adhesive material is deposited in the mold by spraying.
  • the method also consists in that the armature metal is previously glued to a layer of flexible material, such as a jersey-like knit by example, and then cut to the dimensions of the surface to be protected from the seat element, front to be placed in the mold so that the frame is located between the aforementioned sheet of flexible material and said layer of flexible material.
  • a layer of flexible material such as a jersey-like knit by example
  • This layer of flexible material has a capacity of three-dimensional deformation at least equal to that knitting of the metal frame, so as not to hinder or frustrate the formatting of this frame.
  • Bonding the flexible reinforcement on a layer flexible such as a jersey-like knit allows manipulate the reinforcement to precisely cut it to the shape and dimensions of the surface it must protect in a seat element. Otherwise, the precise cutting of the flexible frame would be very difficult or almost impossible, as is its maintaining the shape and dimensions of the cut during exterior manipulations.
  • this layer of flexible material on which is glued the frame forms a barrier for the adhesive material which is deposited in the mold for fixing the frame on the ply of flexible material, this adhesive material thus remaining confined to closing the mold between the ply of flexible material and the layer of flexible material.
  • the sheet of flexible material is cut, before being placed in the mold, with dimensions larger than those of the surface that the anti-laceration coating must cover on a seat element, so that the parts of the flexible sheet that overflows from this surface can used for fixing the covering to a frame, on a seat upholstery support member, or similar.
  • the covering is also fixed by bonding on one side of the filling to be covered, especially when this face is concave, for good conform to the shape of this face and remain applied to this side when the anti-laceration coating is stretched over the seat element as mentioned above.
  • the sheet of flexible material which forms the outer layer of the anti-laceration coating is previously treated by deposit on its face inner layer of a sealant and fire resistance, and by vulcanization of this material, before being cut as above and deposited in a mold for the manufacture of a anti-laceration coating.
  • the aforementioned material which covers the internal face of the sheet of flexible material which is vulcanized has the double advantage of improving fire resistance of this sheet of flexible material and make it waterproof, allowing in situ cleaning in particular anti-laceration coatings of the elements of seat, for example by injection-aspiration of a cleaning product (steam, liquid detergent, etc.) without damaging the upholstery of the seat elements and without having to dismantle the anti-laceration coverings and reassemble them.
  • a cleaning product steam, liquid detergent, etc.
  • this sealing material and fire resistance is a polymerizable silicone hot.
  • the invention also relates to an element of seat or the like which includes a trim elastically deformable covered with a coating anti-laceration, characterized in that the coating anti-laceration is obtained by carrying out the process described above.
  • the anti-laceration coating according to the invention which has been represented diagrammatically in FIG. 1, essentially comprises a web 12 of material flexible forming the outer face or aspect face of the coating and which is generally a sheet of material textile or plastic sheet or similar, this coating further comprising a flexible metal frame 14 fixed on the face internal of the flexible sheet 12 by a layer 16 of a adhesive material in which the frame 14 is more or less drowned.
  • the adhesive material 16 is of cold polymerizable type (at room temperature) and is for example a polyurethane or a silicone.
  • the polymerization in a few minutes of this adhesive material reduces the duration of immobilization of the molds in which are deposited the various components of the coating anti-laceration, and to respect a high rate manufacturing with a reduced number of molds.
  • the frame flexible metal 14 is advantageously a knit of metallic threads 20 with jersey type or analog, which gives it great flexibility and great deformation capacity.
  • Metallic wires 20 are typically galvanized steel wires having a diameter of the order of 0.7 millimeters and the meshes have a dimension of the order of a centimeter, which gives the frame 14 great resistance laceration attempts.
  • the armature 14 is cut to the shapes and dimensions of the part of a seat element that it is intended for protect.
  • the frame 14 which is extremely deformable, is previously fixed by gluing on a layer of flexible material 18, such as a cotton jersey knit by example, to form a whole with this layer unitary which is relatively easy to cut with precision to the desired shape and dimensions.
  • the method according to the invention also provides that the ply 12 of flexible material, which forms the outer layer of the anti-laceration coating, is cut, before being placed in the mold manufacturing, to dimensions which are greater than those of the seat element part to cover, so that the protruding parts of the ply 12 allow the fixing of the covering on a frame or on a trim support in the seat element.
  • this seat element can be a seat cushion, with polyurethane foam padding or some other suitable subject, which includes a central part 22 of curved shape, for example in concave part, two side parts 24 which extend obliquely upward from the central part 22, and a front part 26 which is convex shape, all of the side parts 24 and of the front part 26 forming a sort of rim curved protruding or large bead surrounding the central part 22.
  • This foam lining or analog is intended to rest by its face lower 28 on a frame or on a support on which the protruding parts of the sheet 12 of the anti-laceration coating will be fixed by stapling, by gluing, using strips of fabric to claws and hooking loops, or by any other appropriate means, this fixing allowing good stretch the anti-laceration coating on the lining of the seat element.
  • this trim has parts in hollow or concave, it is better to fix the anti-laceration coating on the lining by bonding of the layer of flexible material 18 on the lining material, so that the coating fits the shapes of the concave parts well despite of the tension resulting from the above attachment on the frame or support of the trim.
  • the material layer 30 forms a sealing between the ply 12 and the gasket the seat element, which makes it possible to clean the seat covers leaving them in place on the seat element fittings, for example by injection-suction of steam, liquid cleaning or whatever.
  • the layer of material 30 also constitutes a fire barrier which gives off very little smoke toxic and opaque in contact with a flame.
  • the method according to the invention can be simpler, especially when the coating anti-laceration does not include a knit layer 18 and layer of sealing material 30 and fire resistance.

Landscapes

  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Paints Or Removers (AREA)
  • Materials For Medical Uses (AREA)
  • Adhesive Tapes (AREA)
  • Toilet Supplies (AREA)

Abstract

Cut-resistant covers for seats are produced by rapid polymerisation, in a seat-shaped mould, of an adhesive which adheres a flexible metal framework to another material. Fabrication process for cut resistant covers (C) for seats or similar, where the cover comprises a flexible metal framework adhered to a flexible layer of material (M1) , which forms the exterior of the cover, and the process consists of placing the different components of the cover in a seat mould, closing the mould, polymerizing the adhesive (A) and demolding. The adhesive is characterized by being capable of rapid (within an minute) polymerisation/cross-linking at ambient temperature. An INDEPENDENT claim is included for part of a seat (or similar article) comprising a flexible core (e.g. polyurethane foam) covered with cut resistant cover (C).

Description

L'invention concerne un procédé de fabrication d'un revêtement anti-lacération pour siège de transports en commun ou analogue, ainsi qu'un élément de siège comprenant ce revêtement.The invention relates to a manufacturing process. anti-laceration coating for seat public transport or the like, as well as an element seat comprising this coating.

De façon connue, les revêtements anti-lacération de sièges utilisés dans les lieux publics et dans les transports en commun, comprennent en général une armature métallique fixée par collage sur la face intérieure d'une housse destinée à recouvrir une garniture élastiquement déformable faisant partie d'un élément de siège.In known manner, anti-laceration coatings seats used in public places and in public transport, usually includes a metal frame fixed by gluing on the face inside of a cover intended to cover a elastically deformable lining forming part a seat element.

Dans la technique traditionnelle, ces revêtements anti-lacération sont fabriqués à plat, l'armature métallique étant déposée sur une couche de matière adhésive elle-même déposée sur une nappe de matière textile ou analogue destinée à former la housse, et ensuite par polymérisation à chaud de la matière adhésive. On obtient ainsi une nappe plane multicouches qui résiste bien aux tentatives de lacération et qui est bon marché, mais qui a une faible ou très faible capacité de déformation tridimensionnelle quand on veut l'utiliser pour recouvrir un élément de siège ayant une forme galbée.In traditional technique, these anti-laceration coatings are made flat, the metal reinforcement being deposited on a layer of adhesive material itself deposited on a sheet of textile or similar material intended to form the cover, and then by hot polymerization of the adhesive material. This gives a flat sheet multilayer that resists attempts to laceration and which is cheap but which has a low or very low deformation capacity three-dimensional when you want to use it for cover a seat element having a curved shape.

On a déjà proposé, dans la demande de brevet européen N° 99401996.6 de la demanderesse, un procédé de fabrication d'un revêtement anti-lacération du type précité, dans lequel le revêtement est mis en forme au cours de sa fabrication et non après, grâce à la disposition des différents constituants du revêtement les uns après les autres dans une partie de moule ayant la forme de l'élément de siège à recouvrir, la nappe de matière textile ou analogue destinée à former la housse étant naturellement relativement souple, l'armature métallique étant avantageusement un tricot de fil métallique, par exemple à mailles du type jersey, pour avoir une très grande capacité de déformation. Lorsque les différents constituants du revêtement anti-lacération ont été déposés successivement dans le moule, on ferme le moule, on polymérise à chaud la matière adhésive, on ouvre le moule et on démoule le revêtement qui est alors manipulable d'une seule pièce et qui est à la forme de l'élément de siège à recouvrir.We have already proposed, in the patent application European N ° 99401996.6 of the applicant, a process manufacturing an anti-laceration coating aforementioned type, in which the coating is laid form during its production and not after, thanks available to the various constituents of the coating one after the other in one part mold having the shape of the seat element to cover, the web of textile material or the like intended to form the cover being naturally relatively flexible, the metal frame being advantageously a knitting of wire, by example with jersey type mesh, to have a very great deformation capacity. When the different constituents of the anti-laceration coating were successively deposited in the mold, we closes the mold, the material is hot-cured adhesive, we open the mold and we unmold it coating which can then be handled with just one piece and that is shaped like the seat element to cover.

La présente invention a notamment pour but d'apporter des perfectionnements à ce procédé de fabrication.The object of the present invention is in particular to bring improvements to this process of manufacturing.

Elle propose à cet effet un procédé de fabrication d'un revêtement anti-lacération du type précité, ce revêtement comprenant une armature métallique souple collée par une matière adhésive sur une nappe de matière souple qui forme la face extérieure du revêtement, le procédé consistant à mettre en forme le revêtement en cours de fabrication et, pour cela, à déposer successivement les différents constituants du revêtement dans un moule à la forme d'un élément de siège à recouvrir, à fermer le moule, à l'ouvrir après polymérisation ou réticulation de la matière adhésive et à démouler le revêtement ainsi obtenu, caractérisé en ce que la matière adhésive est polymérisable ou réticulable à température ambiante en un temps relativement court, de l'ordre de quelques minutes.To this end, it proposes a method of manufacture of an anti-laceration coating of the type mentioned above, this covering comprising a reinforcement flexible metal bonded by an adhesive material on a sheet of flexible material which forms the face exterior of the coating, the process of shaping the coating during manufacture and, for this, to successively file the different constituents of the coating in a mold the shape of a seat element to cover, to close the mold, to open it after polymerization or crosslinking of the adhesive material and demolding the coating thus obtained, characterized in that the adhesive material is polymerizable or crosslinkable to room temperature in a relatively short time, in the order of a few minutes.

L'utilisation d'une matière adhésive polymérisable à froid (c'est-à-dire à température ambiante) permet de réduire beaucoup la durée d'utilisation d'un moule pour la fabrication d'un revêtement anti-lacération.Use of adhesive material cold polymerizable (i.e. at temperature ambient) significantly reduces the time use of a mold for the manufacture of a anti-laceration coating.

Dans le procédé antérieur précité, la polymérisation à chaud de la matière adhésive durait 40 à 50 minutes environ par exemple, de sorte que, compte tenu des temps de chauffage et de refroidissement du moule, la fabrication d'un revêtement anti-lacération dans un moule immobilisait le moule pendant une durée d'au moins une heure, ce qui imposait d'avoir un parc important de moules pour une fabrication de revêtements anti-lacération à cadence normale.In the above-mentioned prior method, the hot curing of the adhesive material lasted 40 to 50 minutes approximately for example, so that, taking into account the heating and mold cooling, making a anti-laceration coating in a mold immobilized the mold for a period of at least one hour, this which required having a large fleet of mussels for manufacture of anti-laceration coatings at normal rate.

Dans le procédé selon l'invention, la polymérisation à froid de la matière adhésive dure quelques minutes, typiquement de 2 à 4 minutes, de sorte qu'un moule n'est immobilisé que pendant 6 minutes environ pour la fabrication d'un revêtement anti-lacération, ce qui permet une cadence normale de fabrication des revêtements avec un parc réduit de moules.In the method according to the invention, the cold curing of hard adhesive material a few minutes, typically 2 to 4 minutes, so that a mold is only immobilized for 6 about minutes for the production of a coating anti-laceration, which allows a normal rate of coating manufacturing with a reduced fleet of mussels.

Avantageusement, la matière adhésive polymérisable à froid est un polyuréthanne ou un silicone.Advantageously, the adhesive material cold polymerizable is a polyurethane or a silicone.

Ces matières adhésives ont l'avantage d'une bonne tenue à chaud (par exemple jusqu'à 100°C environ) de sorte que les revêtements résistent bien à l'échauffement par le soleil, de rester souples après polymérisation, d'avoir une bonne résistance au feu, et d'être suffisamment rigides en un temps court pour permettre une ouverture de moules et un démoulage des revêtements 2 à 4 minutes après la fermeture des moules.These adhesive materials have the advantage of good heat resistance (for example up to 100 ° C approx.) so that the coatings resist well to warm up by the sun, to stay flexible after polymerization, to have good resistance to fire, and be rigid enough in a short time to allow opening of molds and demoulding of the coatings 2 to 4 minutes after closing the molds.

De préférence, la matière adhésive est déposée dans le moule par pulvérisation. Preferably, the adhesive material is deposited in the mold by spraying.

Cela permet de déposer rapidement et de façon assez régulière et uniforme la quantité voulue de matière adhésive dans le moule.This allows you to deposit quickly and fairly regular and uniform the desired amount of adhesive material in the mold.

Selon une autre caractéristique de l'invention, le procédé consiste également en ce que l'armature métallique est préalablement collée sur une couche de matière souple, telle qu'un tricot du type jersey par exemple, et découpée ensuite aux dimensions de la surface à protéger de l'élément de siège, avant d'être déposée dans le moule de telle sorte que l'armature se trouve entre la nappe précitée de matière souple et ladite couche de matière souple.According to another characteristic of the invention, the method also consists in that the armature metal is previously glued to a layer of flexible material, such as a jersey-like knit by example, and then cut to the dimensions of the surface to be protected from the seat element, front to be placed in the mold so that the frame is located between the aforementioned sheet of flexible material and said layer of flexible material.

Cette couche de matière souple a une capacité de déformation tridimensionnelle au moins égale à celle du tricot de l'armature métallique, de façon à ne pas gêner ou contrarier la mise en forme de cette armature.This layer of flexible material has a capacity of three-dimensional deformation at least equal to that knitting of the metal frame, so as not to hinder or frustrate the formatting of this frame.

Le collage de l'armature souple sur une couche souple telle qu'un tricot du type jersey, permet de manipuler l'armature pour la découper avec précision à la forme et aux dimensions de la surface qu'elle doit protéger dans un élément de siège. A défaut, la découpe précise de l'armature souple serait très difficile ou quasi impossible, de même que son maintien à la forme et aux dimensions de la découpe au cours des manipulations extérieures.Bonding the flexible reinforcement on a layer flexible such as a jersey-like knit, allows manipulate the reinforcement to precisely cut it to the shape and dimensions of the surface it must protect in a seat element. Otherwise, the precise cutting of the flexible frame would be very difficult or almost impossible, as is its maintaining the shape and dimensions of the cut during exterior manipulations.

De plus, cette couche de matière souple sur laquelle est collée l'armature forme une barrière pour la matière adhésive qui est déposée dans le moule pour la fixation de l'armature sur la nappe de matière souple, cette matière adhésive restant ainsi confinée à la fermeture du moule entre la nappe de matière souple et la couche de matière souple.In addition, this layer of flexible material on which is glued the frame forms a barrier for the adhesive material which is deposited in the mold for fixing the frame on the ply of flexible material, this adhesive material thus remaining confined to closing the mold between the ply of flexible material and the layer of flexible material.

Selon encore une autre caractéristique de l'invention, la nappe de matière souple est découpée, avant d'être déposée dans le moule, avec des dimensions supérieures à celles de la surface que le revêtement anti-lacération doit recouvrir sur un élément de siège, de sorte que les parties de la nappe souple qui débordent de cette surface puissent servir à la fixation du revêtement sur une ossature, sur un élément de support de garniture de siège, ou analogue.According to yet another characteristic of the invention, the sheet of flexible material is cut, before being placed in the mold, with dimensions larger than those of the surface that the anti-laceration coating must cover on a seat element, so that the parts of the flexible sheet that overflows from this surface can used for fixing the covering to a frame, on a seat upholstery support member, or similar.

Cette fixation des parties débordantes de la nappe de matière souple sur une ossature ou un support permet de bien tendre le revêtement sur l'élément de siège à recouvrir.This fixing of the protruding parts of the sheet of flexible material on a frame or support makes it possible to tighten the coating well on the seat element to be covered.

Si nécessaire, le revêtement est aussi fixé par collage sur une face de la garniture à recouvrir, notamment lorsque cette face est concave, pour bien épouser la forme de cette face et rester appliqué sur cette face lorsque le revêtement anti-lacération est tendu sur l'élément de siège comme précité.If necessary, the covering is also fixed by bonding on one side of the filling to be covered, especially when this face is concave, for good conform to the shape of this face and remain applied to this side when the anti-laceration coating is stretched over the seat element as mentioned above.

Selon encore une autre caractéristique de l'invention, la nappe de matière souple qui forme la couche extérieure du revêtement anti-lacération, est préalablement traitée par dépôt sur sa face intérieure d'une couche d'une matière d'étanchéité et de tenue au feu, et par vulcanisation de cette matière, avant d'être découpée comme précité et déposée dans un moule pour la fabrication d'une revêtement anti-lacération.According to yet another characteristic of the invention, the sheet of flexible material which forms the outer layer of the anti-laceration coating, is previously treated by deposit on its face inner layer of a sealant and fire resistance, and by vulcanization of this material, before being cut as above and deposited in a mold for the manufacture of a anti-laceration coating.

La matière précitée qui recouvre la face interne de la nappe de matière souple et qui est vulcanisée, a le double avantage d'améliorer la résistance au feu de cette nappe de matière souple et de la rendre étanche, ce qui permet notamment un nettoyage in situ des revêtements anti-lacération des éléments de siège, par exemple par injection-aspiration d'un produit de nettoyage (de la vapeur, un liquide lessiviel, etc.) sans abímer les garnitures des éléments de siège et sans devoir démonter les revêtements anti-lacération et les remonter ensuite.The aforementioned material which covers the internal face of the sheet of flexible material which is vulcanized, has the double advantage of improving fire resistance of this sheet of flexible material and make it waterproof, allowing in situ cleaning in particular anti-laceration coatings of the elements of seat, for example by injection-aspiration of a cleaning product (steam, liquid detergent, etc.) without damaging the upholstery of the seat elements and without having to dismantle the anti-laceration coverings and reassemble them.

Avantageusement, cette matière d'étanchéité et de tenue au feu est un silicone polymérisable à chaud.Advantageously, this sealing material and fire resistance is a polymerizable silicone hot.

L'invention concerne également un élément de siège ou analogue qui comprend une garniture élastiquement déformable recouverte d'un revêtement anti-lacération, caractérisé en ce que le revêtement anti-lacération est obtenu par exécution du procédé décrit ci-dessus.The invention also relates to an element of seat or the like which includes a trim elastically deformable covered with a coating anti-laceration, characterized in that the coating anti-laceration is obtained by carrying out the process described above.

L'invention sera mieux comprise et d'autres caractéristiques, détails et avantages de celle-ci apparaítront plus clairement à la lecture de la description qui suit, faite à titre d'exemple en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue schématique en coupe transversale d'un revêtement anti-lacération selon l'invention ;
  • la figure 2 est une vue schématique partielle agrandie d'une armature métallique souple ;
  • la figure 3 est une vue schématique en perspective d'un élément de siège comportant un revêtement anti-lacération selon l'invention ; et
  • la figure 4 est un organigramme des opérations essentielles du procédé selon l'invention.
The invention will be better understood and other characteristics, details and advantages thereof will appear more clearly on reading the description which follows, given by way of example with reference to the appended drawings in which:
  • Figure 1 is a schematic cross-sectional view of an anti-laceration coating according to the invention;
  • Figure 2 is an enlarged partial schematic view of a flexible metal frame;
  • Figure 3 is a schematic perspective view of a seat element comprising an anti-laceration coating according to the invention; and
  • FIG. 4 is a flow diagram of the essential operations of the method according to the invention.

Le revêtement anti-lacération selon l'invention, qui a été représenté schématiquement en figure 1, comprend essentiellement une nappe 12 de matière souple formant la face extérieure ou face d'aspect du revêtement et qui est en général une nappe de matière textile ou une feuille de matière plastique ou analogue, ce revêtement comprenant encore une armature métallique souple 14 fixée sur la face interne de la nappe souple 12 par une couche 16 d'une matière adhésive dans laquelle l'armature 14 est plus ou moins noyée.The anti-laceration coating according to the invention, which has been represented diagrammatically in FIG. 1, essentially comprises a web 12 of material flexible forming the outer face or aspect face of the coating and which is generally a sheet of material textile or plastic sheet or similar, this coating further comprising a flexible metal frame 14 fixed on the face internal of the flexible sheet 12 by a layer 16 of a adhesive material in which the frame 14 is more or less drowned.

Selon l'invention, la matière adhésive 16 est du type polymérisable à froid (à température ambiante) et est par exemple un polyuréthanne ou un silicone. La polymérisation en quelques minutes de cette matière adhésive permet de réduire la durée d'immobilisation des moules dans lesquels sont déposés les différents constituants du revêtement anti-lacération, et de respecter une cadence élevée de fabrication avec un nombre réduit de moules.According to the invention, the adhesive material 16 is of cold polymerizable type (at room temperature) and is for example a polyurethane or a silicone. The polymerization in a few minutes of this adhesive material reduces the duration of immobilization of the molds in which are deposited the various components of the coating anti-laceration, and to respect a high rate manufacturing with a reduced number of molds.

Comme déjà décrit dans la demande de brevet antérieure précitée de la demanderesse, l'armature métallique souple 14 est avantageusement un tricot de fils métalliques 20 à mailles du type jersey ou analogue, qui lui donne une grande souplesse et une grande capacité de déformation. Les fils métalliques 20 sont typiquement des fils d'acier galvanisé ayant un diamètre de l'ordre de 0,7 millimètre et les mailles ont une dimension de l'ordre du centimètre, ce qui confère à l'armature 14 une grande résistance aux tentatives de lacération.As already described in the patent application Applicant's aforementioned earlier, the frame flexible metal 14 is advantageously a knit of metallic threads 20 with jersey type or analog, which gives it great flexibility and great deformation capacity. Metallic wires 20 are typically galvanized steel wires having a diameter of the order of 0.7 millimeters and the meshes have a dimension of the order of a centimeter, which gives the frame 14 great resistance laceration attempts.

Dans le procédé selon l'invention, l'armature 14 est découpée aux formes et aux dimensions de la partie d'un élément de siège qu'elle est destinée à protéger. Pour permettre cette découpe, l'armature 14 qui est extrêmement déformable, est préalablement fixée par collage sur une couche d'une matière souple 18, telle qu'un tricot du type jersey en coton par exemple, pour former avec cette couche un ensemble unitaire qui est relativement facile à découper avec précision à la forme et aux dimensions souhaitées. In the method according to the invention, the armature 14 is cut to the shapes and dimensions of the part of a seat element that it is intended for protect. To allow this cutting, the frame 14 which is extremely deformable, is previously fixed by gluing on a layer of flexible material 18, such as a cotton jersey knit by example, to form a whole with this layer unitary which is relatively easy to cut with precision to the desired shape and dimensions.

Le procédé selon l'invention prévoit également que la nappe 12 de matière souple, qui forme la couche extérieure du revêtement anti-lacération, est découpée, avant d'être déposée dans le moule de fabrication, à des dimensions qui sont supérieures à celles de la partie de l'élément de siège à recouvrir, pour que les parties débordantes de la nappe 12 permettent la fixation du revêtement sur une ossature ou sur un support de garniture dans l'élément de siège.The method according to the invention also provides that the ply 12 of flexible material, which forms the outer layer of the anti-laceration coating, is cut, before being placed in the mold manufacturing, to dimensions which are greater than those of the seat element part to cover, so that the protruding parts of the ply 12 allow the fixing of the covering on a frame or on a trim support in the seat element.

Comme représenté à titre d'exemple en figure 3, cet élément de siège peut être un coussin d'assise, comportant une garniture en mousse de polyuréthanne ou en une autre matière appropriée, qui comprend une partie centrale 22 de forme galbée, par exemple en partie concave, deux parties latérales 24 qui s'étendent en oblique vers le haut par rapport à la partie centrale 22, et une partie avant 26 qui est de forme convexe, l'ensemble des parties latérales 24 et de la partie avant 26 formant une sorte de rebord incurvé en saillie ou de gros bourrelet entourant la partie centrale 22. Cette garniture en mousse ou analogue est destinée à reposer par sa face inférieure 28 sur une ossature ou sur un support sur lequel les parties débordantes de la nappe 12 du revêtement anti-lacération seront fixées par agrafage, par collage, au moyen de bandes de tissu à griffes et à boucles d'accrochage, ou par tout autre moyen approprié, cette fixation permettant de bien tendre le revêtement anti-lacération sur la garniture de l'élément de siège.As shown by way of example in FIG. 3, this seat element can be a seat cushion, with polyurethane foam padding or some other suitable subject, which includes a central part 22 of curved shape, for example in concave part, two side parts 24 which extend obliquely upward from the central part 22, and a front part 26 which is convex shape, all of the side parts 24 and of the front part 26 forming a sort of rim curved protruding or large bead surrounding the central part 22. This foam lining or analog is intended to rest by its face lower 28 on a frame or on a support on which the protruding parts of the sheet 12 of the anti-laceration coating will be fixed by stapling, by gluing, using strips of fabric to claws and hooking loops, or by any other appropriate means, this fixing allowing good stretch the anti-laceration coating on the lining of the seat element.

Lorsque cette garniture présente des parties en creux ou concaves, il est préférable de fixer le revêtement anti-lacération sur la garniture par collage de la couche de matière souple 18 sur la matière de la garniture, pour que le revêtement épouse bien les formes des parties concaves en dépit de la tension résultant de l'accrochage précité sur l'ossature ou le support de la garniture.When this trim has parts in hollow or concave, it is better to fix the anti-laceration coating on the lining by bonding of the layer of flexible material 18 on the lining material, so that the coating fits the shapes of the concave parts well despite of the tension resulting from the above attachment on the frame or support of the trim.

On peut également, selon l'invention, recouvrir la face intérieure de la nappe souple 12 d'une couche 30 d'une matière d'étanchéité et de tenue au feu, telle qu'un silicone polymérisable à chaud par exemple, avant d'utiliser la nappe 12 pour la fabrication d'un revêtement anti-lacération selon l'invention.It is also possible, according to the invention, to cover the inner face of the flexible sheet 12 of a layer 30 of a material for sealing and fire resistance, such as a hot-polymerizable silicone by example, before using tablecloth 12 for the manufacture of an anti-laceration coating according to the invention.

Pour cela, on dépose la couche 30 sur la face interne de la nappe 12 par enduction, en réglant sa hauteur ou son épaisseur par exemple par raclage, puis on polymérise à chaud la matière 30 et enfin on découpe la nappe 12 aux dimensions et à la forme souhaitées, comme indiqué plus haut, avant de la déposer dans un moule pour la fabrication du revêtement selon l'invention.For this, we deposit layer 30 on the face internal of the web 12 by coating, by adjusting its height or thickness, for example by scraping, then we polymerize the material 30 hot and finally we cut the sheet 12 to the dimensions and the shape desired, as indicated above, before the place in a mold for making coating according to the invention.

Lorsque le revêtement ainsi obtenu recouvre un élément de siège, la couche de matière 30 forme une étanchéité entre la nappe 12 et la garniture de l'élément de siège, ce qui permet de nettoyer les revêtements de siège en les laissant en place sur les garnitures des éléments de siège, par exemple par injection-aspiration de vapeur, d'un liquide de nettoyage ou autre.When the coating thus obtained covers a seat element, the material layer 30 forms a sealing between the ply 12 and the gasket the seat element, which makes it possible to clean the seat covers leaving them in place on the seat element fittings, for example by injection-suction of steam, liquid cleaning or whatever.

La couche de matière 30 constitue également une barrière anti-feu qui dégage très peu de fumées toxiques et opaques au contact d'une flamme.The layer of material 30 also constitutes a fire barrier which gives off very little smoke toxic and opaque in contact with a flame.

Les principales étapes du procédé selon l'invention sont rappelées en figure 4 et comprennent:

  • une étape 32 de préparation de la housse, cette étape consistant à déposer une couche 30 de silicone sur la nappe 12 de matière souple, à polymériser le silicone, et à découper la nappe 12 aux formes et aux dimensions voulues pour que la nappe 12 déborde au-delà de la surface à recouvrir de l'élément de siège,
  • en parallèle, une étape 34 de préparation de l'armature souple, qui comprend un collage à plat de l'armature 14 sur le tricot 18 et une découpe de l'ensemble ainsi obtenu à la forme et aux dimensions de la partie à recouvrir de l'élément de siège,
  • une étape 36 de dépôt dans un moule de la housse préparée à l'étape 32,
  • une étape 38 de pulvérisation d'une matière adhésive polymérisable à froid sur la housse déposée dans le moule,
  • une étape 40 de dépôt dans le moule, sur la housse et sur la couche pulvérisée de matière adhésive, de l'armature souple obtenue à l'issue de l'étape 34,
  • une étape 42 de fermeture du moule, de polymérisation de la matière adhésive 16 à température ambiante en quelques minutes dans le moule (2 à 3 minutes par exemple), puis d'ouverture du moule et de démoulage du revêtement anti-lacération ainsi obtenu, qui est à la forme de l'élément de siège à recouvrir, et
  • une étape 44 de pose du revêtement sur l'élément de siège à recouvrir, cette étape 44 comprenant par exemple une opération de collage du revêtement anti-lacération par la couche 18 sur la surface à recouvrir d'une garniture en mousse ou analogue, et ensuite une opération de fixation de la housse sur une ossature ou un support de la garniture, c'est-à-dire une fixation des parties débordantes de la nappe 12 sur cette ossature ou ce support.
The main steps of the method according to the invention are recalled in FIG. 4 and include:
  • a step 32 of preparing the cover, this step consisting of depositing a layer 30 of silicone on the sheet 12 of flexible material, polymerizing the silicone, and cutting the sheet 12 to the shapes and dimensions desired so that the sheet 12 overflows beyond the surface to be covered with the seat element,
  • in parallel, a step 34 of preparation of the flexible reinforcement, which comprises a flat bonding of the reinforcement 14 on the knitted fabric 18 and a cut of the assembly thus obtained in the shape and dimensions of the part to be covered with the seat element,
  • a step 36 of depositing the cover prepared in step 32 in a mold,
  • a step 38 of spraying a cold-polymerizable adhesive material onto the cover deposited in the mold,
  • a step 40 of depositing in the mold, on the cover and on the sprayed layer of adhesive material, the flexible reinforcement obtained at the end of step 34,
  • a step 42 of closing the mold, of polymerizing the adhesive material 16 at ambient temperature in a few minutes in the mold (2 to 3 minutes for example), then of opening the mold and demolding the anti-laceration coating thus obtained, which is in the shape of the seat element to be covered, and
  • a step 44 of laying the covering on the seat element to be covered, this step 44 comprising for example an operation of bonding the anti-laceration covering by the layer 18 on the surface to be covered with a foam lining or the like, and then a fixing operation of the cover on a frame or a support of the lining, that is to say a fixing of the protruding parts of the sheet 12 on this frame or this support.

Bien entendu, le procédé selon l'invention peut être plus simple, notamment lorsque le revêtement anti-lacération ne comprend pas de couche de tricot 18 et de couche de matière 30 d'étanchéité et de tenue au feu.Of course, the method according to the invention can be simpler, especially when the coating anti-laceration does not include a knit layer 18 and layer of sealing material 30 and fire resistance.

Claims (10)

Procédé de fabrication d'un revêtement anti-lacération pour siège ou analogue, ce revêtement comprenant une armature métallique souple (14) collée par une matière adhésive (16) sur une nappe de matière souple (12) qui forme la face extérieure du revêtement, le procédé consistant à mettre en forme le revêtement en cours de sa fabrication et, pour cela, à déposer successivement les différents constituants du revêtement dans un moule à la forme d'un élément de siège à revêtir, à fermer le moule, à l'ouvrir après polymérisation ou réticulation de la matière adhésive (16) et à démouler le revêtement ainsi obtenu, caractérisé en ce que ladite matière adhésive (16) est polymérisable ou réticulable à température ambiante en un temps relativement court, de l'ordre de quelques minutes.Method of manufacturing an anti-laceration coating for seat or the like, this covering comprising a flexible metal frame (14) bonded by an adhesive material (16) on a sheet of flexible material (12) which forms the outer face of the coating, the process of shaping the coating during its manufacture and, for this, to successively file the different components of the coating in a form mold a seat element to be coated, to close the mold, to open it after polymerization or crosslinking of the adhesive material (16) and demolding the coating thus obtained, characterized in that said material adhesive (16) is polymerizable or crosslinkable to room temperature in a relatively short time, in the order of a few minutes. Procédé selon la revendication 1, caractérisé en ce que ladite matière adhésive (16) est déposée par pulvérisation.Method according to claim 1, characterized in that said adhesive material (16) is deposited by spraying. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'armature métallique (14) est un tricot à maille jersey ou analogue et est préalablement collée sur une couche de matière souple (18), telle qu'un tricot du type jersey par exemple, et découpée aux dimensions de la surface à protéger de l'élément de siège avant d'être déposée dans le moule de telle sorte que l'armature (14) se trouve entre ladite nappe (12) et ladite couche de matière souple (18). Method according to claim 1 or 2, characterized in that the metal frame (14) is a jersey knit or the like and is previously glued to a layer of flexible material (18), such as a jersey-like knit for example, and cut to the dimensions of the surface to be protected of the seat element before being deposited in the mold so that the frame (14) is between said ply (12) and said layer of material flexible (18). Procédé selon la revendication 3, caractérisé en ce que, à la fermeture du moule, la matière adhésive (16) reste confinée entre ladite nappe (12) et ladite couche de matière souple (18).Method according to claim 3, characterized in that, when the mold is closed, the adhesive material (16) remains confined between said ply (12) and said layer of flexible material (18). Procédé selon l'une des revendications 1 à 4, caractérisé en ce que ladite nappe (12) de matière souple a des dimensions supérieures à celles de la surface à revêtir de l'élément de siège, les parties de ladite nappe qui débordent de cette surface servant à la fixation du revêtement sur une ossature ou sur un support.Method according to one of claims 1 to 4, characterized in that said ply (12) of material flexible has dimensions larger than those of the surface to be covered with the seat element, the parts of said sheet which overflows from this surface used for fixing the covering to a frame or on a support. Procédé selon l'une des revendications 3 à 5, caractérisé en ce qu'après ouverture du moule, le revêtement obtenu est fixé sur une garniture d'un élément de siège par collage de la couche de matière souple (18) sur la garniture.Method according to one of claims 3 to 5, characterized in that after opening the mold, the coating obtained is fixed on a lining of a seat element by bonding the material layer flexible (18) on the lining. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que ladite matière adhésive (16) est un polyuréthanne ou un silicone.Method according to one of claims 1 to 6, characterized in that said adhesive material (16) is a polyurethane or silicone. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que la nappe (12) de matière souple est préalablement traitée par dépôt sur sa face intérieure d'une couche d'une matière (30) d'étanchéité et de tenue au feu, puis par vulcanisation de cette matière, avant d'être découpée et déposée dans le moule.Method according to one of claims 1 to 7, characterized in that the ply (12) of material flexible is previously treated by deposit on its inner face of a layer of material (30) sealing and fire resistance, then by vulcanization of this material, before being cut and deposited in the mold. Procédé selon la revendication 8, caractérisé en ce que ladite matière (30) d'étanchéité et de tenue au feu est un silicone. Method according to claim 8, characterized in that said material (30) sealing and fire resistance is a silicone. Elément de siège ou analogue, comprenant une garniture élastiquement déformable, par exemple en mousse de polyuréthanne, recouverte d'un revêtement anti-lacération, caractérisé en ce que le revêtement anti-lacération est obtenu par exécution du procédé selon l'une des revendications précédentes.Seat element or the like, comprising an elastically deformable packing, for example polyurethane foam, covered with anti-laceration coating, characterized in that the anti-laceration coating is obtained by execution of the method according to one of claims previous.
EP01400450A 2000-02-25 2001-02-19 A method of manufacturing an anti-laceration cover for a seat Expired - Lifetime EP1127517B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0002491A FR2805444B1 (en) 2000-02-25 2000-02-25 METHOD FOR MANUFACTURING AN ANTI-LACERATION COVER FOR A SEAT
FR0002491 2000-02-25

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EP1127517A1 true EP1127517A1 (en) 2001-08-29
EP1127517B1 EP1127517B1 (en) 2005-01-19

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EP (1) EP1127517B1 (en)
AT (1) ATE287231T1 (en)
DE (1) DE60108429T2 (en)
ES (1) ES2236151T3 (en)
FR (1) FR2805444B1 (en)
PT (1) PT1127517E (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005079631A1 (en) * 2004-02-24 2005-09-01 Imetali, Inc. Flame-retardant seat
FR2869776A1 (en) 2004-05-07 2005-11-11 Grupo Antolin Ffi Soc Par Acti Slash-resistant covering for seats in public transport vehicles includes layer of knitted metal filaments partially impregnated by elastomer material
EP1621111A1 (en) 2004-07-28 2006-02-01 Compin Sitz für öffentliche Verkehrsmittel
FR2891778A1 (en) * 2005-10-10 2007-04-13 Cera AUTOMOTIVE VEHICLE SEAT MAINASSURE WHERE THE COATING INCLUDES A DISSOCIATED PARIPHERIC AREA OF THE FOAM
FR2891777A1 (en) * 2005-10-10 2007-04-13 Cera Seat upholstery for motor vehicle, has cover covering foam body and having central part surrounded partially by peripheral zone that is associated to part by confection, where part is over-molded by foam body

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU591030B2 (en) * 1987-02-20 1989-11-23 Vickers Xatal Pty. Ltd. Seat upholstery
EP0467785A1 (en) * 1990-07-20 1992-01-22 ETABLISSEMENTS M. DURET & FILS Société Anonyme dite: Method for manufacturing and fastening a seat upholstery on a seat frame
EP0981982A1 (en) 1998-08-28 2000-03-01 Compin A method of manufacturing an anti-laceration cover for a seat or the like and seat element with such cover

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU591030B2 (en) * 1987-02-20 1989-11-23 Vickers Xatal Pty. Ltd. Seat upholstery
EP0467785A1 (en) * 1990-07-20 1992-01-22 ETABLISSEMENTS M. DURET & FILS Société Anonyme dite: Method for manufacturing and fastening a seat upholstery on a seat frame
EP0981982A1 (en) 1998-08-28 2000-03-01 Compin A method of manufacturing an anti-laceration cover for a seat or the like and seat element with such cover

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005079631A1 (en) * 2004-02-24 2005-09-01 Imetali, Inc. Flame-retardant seat
FR2869776A1 (en) 2004-05-07 2005-11-11 Grupo Antolin Ffi Soc Par Acti Slash-resistant covering for seats in public transport vehicles includes layer of knitted metal filaments partially impregnated by elastomer material
EP1621111A1 (en) 2004-07-28 2006-02-01 Compin Sitz für öffentliche Verkehrsmittel
FR2873555A1 (en) 2004-07-28 2006-02-03 Compin Sa SEAT FOR PUBLIC TRANSPORT VEHICLE
FR2891778A1 (en) * 2005-10-10 2007-04-13 Cera AUTOMOTIVE VEHICLE SEAT MAINASSURE WHERE THE COATING INCLUDES A DISSOCIATED PARIPHERIC AREA OF THE FOAM
FR2891777A1 (en) * 2005-10-10 2007-04-13 Cera Seat upholstery for motor vehicle, has cover covering foam body and having central part surrounded partially by peripheral zone that is associated to part by confection, where part is over-molded by foam body

Also Published As

Publication number Publication date
FR2805444A1 (en) 2001-08-31
FR2805444B1 (en) 2002-06-07
ATE287231T1 (en) 2005-02-15
PT1127517E (en) 2005-05-31
EP1127517B1 (en) 2005-01-19
ES2236151T3 (en) 2005-07-16
DE60108429D1 (en) 2005-02-24
DE60108429T2 (en) 2005-12-22

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