EP0157690B1 - Product for reinforcing a flat textile surface, process for its manufacture and applications - Google Patents

Product for reinforcing a flat textile surface, process for its manufacture and applications Download PDF

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Publication number
EP0157690B1
EP0157690B1 EP19850400527 EP85400527A EP0157690B1 EP 0157690 B1 EP0157690 B1 EP 0157690B1 EP 19850400527 EP19850400527 EP 19850400527 EP 85400527 A EP85400527 A EP 85400527A EP 0157690 B1 EP0157690 B1 EP 0157690B1
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EP
European Patent Office
Prior art keywords
product
pore
resin
reinforcing
product according
Prior art date
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Expired
Application number
EP19850400527
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German (de)
French (fr)
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EP0157690A1 (en
Inventor
Edmond Kaczmarek
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Institut Textile de France
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Institut Textile de France
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/042—Acrylic polymers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/402—Amides imides, sulfamic acids
    • D06M13/422—Hydrazides
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
    • D06N3/005—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by blowing or swelling agent
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes

Definitions

  • the present invention relates to a reinforcement product intended to be applied to a flat textile surface to reinforce the latter for the purpose, for example, of making clothing articles. It also relates to the reinforcement process, using said product and the use of this product for reinforcing flat textile surfaces.
  • the purpose of reinforcing the flat textile surfaces is to provide these surfaces with additional stiffness. It is generally practiced by coating a polymeric material, which hardens by evaporation of solvent, by thermocrosslinking or other known process. In most of their applications, reinforced textile surfaces must, however, remain flexible. For this, different techniques have been developed; they are based on a differentiated coating of the surface, that is to say that the entire textile surface is not coated, but only a part of it, so that the uncoated part gives the whole the desired flexibility; in this case the application can be made according to separate and parallel lines, or according to points of variable sizes. Such a method of application by screen printing is described in French patent application 77 11 270. However, these methods see their applications limited insofar as the textile surfaces thus reinforced do not have a hand, a resistance to friction and to cleaning. dry which correspond to the requirements imposed on the reinforcement surfaces in particular in the male garment.
  • micropores provide the desired flexibility, but their creation occurs while the crosslinking is taking place, starting from the complete evaporation of the water; therefore, the resin has a good grip on the textile surface, unlike what happens with foam coatings where the friction resistance is poor because the numerous micropores in contact with the textile surface reduce the bonding of the resin itself.
  • the thermally crosslinkable resin in aqueous dispersion is chosen from known resins, such as acrylic or polyurethane resins. It must have a crosslinking temperature compatible with the textile surface to be reinforced; in fact the crosslinking treatment of the resin must not alter the notably mechanical characteristics of the textile material.
  • the crosslinking temperature of the resin must therefore be lower than the softening temperature of the material of which the textile surface is composed. In the case of textile materials usually used in clothing, natural materials - cotton, wool - or synthetics - polyester, polyamide - the crosslinking temperature of the resin must not exceed 180 ° C.
  • the resin, once crosslinked must have good resistance to the solvents and detergents used in dry cleaning.
  • the blowing agent is a substance which decomposes on heating with the formation of a volatile by-product.
  • the pore-forming agent is chosen from hydrazide derivatives, the decomposition of which releases nitrogen, in particular 3,3 'sulfonyl-bis (benzene-sulfonyi-hydrazide).
  • the reinforcement product comprises from 0.5 to 5% of blowing agent.
  • thickeners compatible with the cross-linkable resin, which have the effect of increasing the viscosity of the product.
  • the amount of thickeners in the product is a function of the desired viscosity, and this is itself a function of the grammage and the texture of the textile surface on which the product is applied. Indeed the product must remain on the surface and must not cross the textile surface on which it is applied; this condition is imperative when the reinforcement is carried out on a textile surface which is intended to be used as it is, and whose unreinforced face constitutes the visible part of the finished article.
  • n-butanol can in particular be used as an agent limiting the evaporation of water. It can also be wetting agents, pigments, etc.
  • This process is characterized in that said reinforcing product is applied to a textile surface and in that said surface is subjected to a heat treatment at a temperature equal to the temperature crosslinking the thermally crosslinkable resin for a determined time.
  • the product is applied to the textile surface in a differentiated manner, either by separate and parallel lines, or by points of varying sizes.
  • the reinforcement product thus obtained is applied according to the screen printing technique to a piece of pure wool fabric weighing 400 grams per square meter intended for making men's drapery.
  • the product does not pass through the fabric.
  • the part, on which the reinforcement product has been applied by points, is subjected for 1 minute to a heat treatment at 160 ° C.
  • the water contained in the reinforcing product evaporates, then the temperature increasing the blowing agent decomposes and releases nitrogen, from approximately 130 ° C to 155 ° C approximately, which creates micropores in the resin which has already started to crosslink.
  • the piece of fabric thus reinforced has a hand, a flexibility which is suitable for its use as front of a jacket, and on the other hand the resistance to friction and to dry cleaning of the resin on the fabric are sufficient for this use.
  • the coin then weighs approximately 500 grams per square meter.
  • the invention is not limited to the example described. Those skilled in the art can easily choose, depending on the textile surface to be reinforced and the use to be made of it, on the one hand the heat-crosslinkable resin, on the other hand the blowing agent, and finally any other constituents of the reinforcement product. Likewise, he will have to choose the proportions of each of these constituents and the quantity of product to be applied depending on the reinforcement and flexibility desired.
  • the blowing agent it has been noted that, surprisingly, compared to the other uses which are made of it, in particular in flexible PVC where the proportions of 5 to 15% are usual, in the reinforcing product according to the invention. he invention a proportion of 0.5 to 5% is sufficient to obtain the desired flexibility.
  • One explanation could be that the mechanical agitation necessary to incorporate the blowing agent in powder form into the aqueous dispersion brings into the product air which is in itself a blowing agent.
  • the invention is particularly applicable to textile surfaces used in the manufacture of men's drapery, in particular the fronts of jackets, and also in the manufacture of women's articles; it is, however, intended to be applied whenever it is sought to apply a reinforcing material on a textile surface, resistant to friction and to dry cleaning, and while at the same time wishing to keep the textile part sufficiently flexible and handy.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Reinforced Plastic Materials (AREA)

Description

La présente invention concerne un produit de renforcement destiné à êtré appliqué sur une surface plane textile pour renforcer celle-ci en vue par exemple de la confection d'articles vestimentaires. Elle concerne également le procédé de renforcement, mettant en oeuvre ledit produit et l'utilisation de ce produit au renforcement des surfaces planes textiles.The present invention relates to a reinforcement product intended to be applied to a flat textile surface to reinforce the latter for the purpose, for example, of making clothing articles. It also relates to the reinforcement process, using said product and the use of this product for reinforcing flat textile surfaces.

Le renforcement des surfaces planes textiles a pour but d'apporter à ces surfaces une raideur supplémentaire. Il est généralement pratiqué en réalisant une enduction d'une matière polyméri- que, qui durcit par évaporation de solvant, par thermoréticulation ou autre procédé connu. Dans la plupart de leurs applications, les surfaces textiles renforcées doivent cependant garder de la souplesse. Pour cela différentes techniques ont été mises au point; elles sont basées sur une enduction différenciée de la surface, c'est-à-dire que toute la surface textile n'est pas enduite, mais seulement une partie de celle-ci, en sorte que la partie non enduite confère à l'ensemble la souplesse désirée; dans ce cas l'application peut être faite selon des lignes séparées et parallèles, ou selon des points de grosseurs variables. Un tel procédé d'application par sérigraphie est décrit dans la demande de brevet français 77 11 270. Néanmoins ces procédés voient leurs applications limitées dans la mesure où les surfaces textiles ainsi renforcées n'ont pas une main, une tenue au frottement et au nettoyage à sec qui correspondent aux exigences imposées aux surfaces de renforcement notamment dans la confection masculine.The purpose of reinforcing the flat textile surfaces is to provide these surfaces with additional stiffness. It is generally practiced by coating a polymeric material, which hardens by evaporation of solvent, by thermocrosslinking or other known process. In most of their applications, reinforced textile surfaces must, however, remain flexible. For this, different techniques have been developed; they are based on a differentiated coating of the surface, that is to say that the entire textile surface is not coated, but only a part of it, so that the uncoated part gives the whole the desired flexibility; in this case the application can be made according to separate and parallel lines, or according to points of variable sizes. Such a method of application by screen printing is described in French patent application 77 11 270. However, these methods see their applications limited insofar as the textile surfaces thus reinforced do not have a hand, a resistance to friction and to cleaning. dry which correspond to the requirements imposed on the reinforcement surfaces in particular in the male garment.

Dans le brevet FR 1 439 984, on décrit des compositions à 3 couches.

  • un support textile,
  • une couche synthétique poreuse (obtenue par traitement thermique d'une mousse plastique à base de plastisol auquel on a notamment ajouté un agent gonflant),
  • une couche de protection (vernis).
In patent FR 1 439 984, compositions with 3 layers are described.
  • a textile support,
  • a porous synthetic layer (obtained by heat treatment of a plastic foam based on plastisol to which a swelling agent has in particular been added),
  • a protective layer (varnish).

On pallie au mauvais accrochage de ladite couche synthétique sur certains supports textiles en faisant intervenir un agent adhésif.This is remedied by the poor adhesion of said synthetic layer to certain textile supports by using an adhesive agent.

On a maintenant trouvé, et c'est ce qui fait l'objet de l'invention, un produit de renforcement de surfaces textiles planes, qui permet de pallier aux inconvénients précités des procédés connus. Ce produit, à base d'une résine contenant un agent porogène, est caractérisé en ce que:

  • ladite résine est une résine thermoréticulable en dispersion aqueuse,
  • ledit agent porogène est une poudre non soluble dans l'eau, incorporée dans la dispersion aqueuse par agitation mécanique et a son action porogène qui se réalise à une température comprise entre la température d'ébullition de l'eau et la température de réticulation de la résine.
We have now found, and this is what is the subject of the invention, a product for reinforcing flat textile surfaces, which overcomes the aforementioned drawbacks of known methods. This product, based on a resin containing a blowing agent, is characterized in that:
  • said resin is a thermally crosslinkable resin in aqueous dispersion,
  • said pore-forming agent is a powder that is not soluble in water, incorporated into the aqueous dispersion by mechanical stirring and has its pore-forming action which takes place at a temperature between the boiling point of water and the crosslinking temperature of the resin.

La présence des micropores apporte la souplesse recherchée, mais leur création intervient alors que la réticulation est en train de se dérouler, à partir de l'évaporation complète de l'eau; de ce fait, la résine présente un bon accrochage sur la surface textile, contrairement à ce qui se passe avec les enductions de mousse où la tenue aux frottements est médiocre du fait que les nombreux micropores au contact de la surface textile diminuent l'accrochage de la résine elle-même.The presence of the micropores provides the desired flexibility, but their creation occurs while the crosslinking is taking place, starting from the complete evaporation of the water; therefore, the resin has a good grip on the textile surface, unlike what happens with foam coatings where the friction resistance is poor because the numerous micropores in contact with the textile surface reduce the bonding of the resin itself.

La résine thermoréticulable en dispersion aqueuse est choisie parmi les résines connues, telles que les résines acryliques ou polyuréthannes. Elle doit présenter une température de réticulation compatible avec la surface textile à renforcer; en effet le traitement de réticulation de la résine ne doit pas altérer les caractéristiques notamment mécaniques de la matière textile. La température de réticulation de la résine doit donc être inférieure à la température de ramollissement de la matière dont est composée la surface textile. Dans le cas des matières textiles habituellement utilisées dans l'habillement, matières naturelles - coton, laine - ou synthétiques - polyester, polyamide - la température de réticulation de la résine ne doit pas dépasser 180°C. De plus la résine, une fois réticulée, doit avoir une bonne résistance aux solvants et aux détergents utilisés dans le nettoyage à sec.The thermally crosslinkable resin in aqueous dispersion is chosen from known resins, such as acrylic or polyurethane resins. It must have a crosslinking temperature compatible with the textile surface to be reinforced; in fact the crosslinking treatment of the resin must not alter the notably mechanical characteristics of the textile material. The crosslinking temperature of the resin must therefore be lower than the softening temperature of the material of which the textile surface is composed. In the case of textile materials usually used in clothing, natural materials - cotton, wool - or synthetics - polyester, polyamide - the crosslinking temperature of the resin must not exceed 180 ° C. In addition, the resin, once crosslinked, must have good resistance to the solvents and detergents used in dry cleaning.

Avantageusement, l'agent porogéne est une substance qui se décompose par chauffage avec formation d'un sous-produit volatil. Préférentiellement, on choisit l'agent porogène parmi les dérivés de l'hydrazide dont la décomposition libére de l'azote, en particulier le 3,3' sulfonyl-bis (benzène-sulfonyi-hydrazide).Advantageously, the blowing agent is a substance which decomposes on heating with the formation of a volatile by-product. Preferably, the pore-forming agent is chosen from hydrazide derivatives, the decomposition of which releases nitrogen, in particular 3,3 'sulfonyl-bis (benzene-sulfonyi-hydrazide).

Avantageusement le produit de renforcement comporte de 0,5 à 5% d'agent porogène.Advantageously, the reinforcement product comprises from 0.5 to 5% of blowing agent.

Bien sûr d'autres substances peuvent entrer dans la composition du produit de renforcement selon l'invention. Il s'agit én particulier d'épaississants, compatibles avec la résine thermoréticulable, qui ont pour effet d'augmenter la viscosité du produit. La quantité d'épaississants dans le produit est fonction de la viscosité désirée, et celleci est elle-même fonction du grammage et de la contexture de la surface textile sur laquelle le produit est appliqué. En effet le produit doit rester en surface et ne doit pas traverser la surface textile sur laquelle il est appliqué; cette condition est impérative lorsque le renforcement est réalisé sur une surface textile qui est destinée à être utilisée telle quelle, et dont la face non renforcée constitue la partie visible de l'article fini. Il peut s'agir également de substances ayant pour but de favoriser le stockage du produit, par exemple en évitant l'évaporation de l'eau qui a pour effet d'entraîner la création d'un film à la surface du produit. Le n-butanol peut notamment être utilisé comme agent limitant l'évaporation de l'eau. Il peut s'agir aussi d'agents mouillants, de pigments etc.Of course, other substances can enter into the composition of the reinforcement product according to the invention. These are in particular thickeners, compatible with the cross-linkable resin, which have the effect of increasing the viscosity of the product. The amount of thickeners in the product is a function of the desired viscosity, and this is itself a function of the grammage and the texture of the textile surface on which the product is applied. Indeed the product must remain on the surface and must not cross the textile surface on which it is applied; this condition is imperative when the reinforcement is carried out on a textile surface which is intended to be used as it is, and whose unreinforced face constitutes the visible part of the finished article. They may also be substances intended to promote the storage of the product, for example by avoiding the evaporation of water which has the effect of causing the creation of a film on the surface of the product. The n-butanol can in particular be used as an agent limiting the evaporation of water. It can also be wetting agents, pigments, etc.

C'est un autre objet de l'invention que de proposer un procédé pour la mise en oeuvre du produit de renforcement précité. Ce procédé est caractérisé en ce qu'on applique sur une surface textile ledit produit de renforcement et en ce qu'on soumet ladite surface à un traitement thermique à une température égale à la température de réticulation de la résine thermoréticulable pendant un temps déterminé. Avantageusement le produit est appliqué sur la surface textile de façon différenciée, soit par lignes séparées et parallèles, soit par points de grosseurs variables.It is another object of the invention to propose a method for the implementation of the abovementioned reinforcement product. This process is characterized in that said reinforcing product is applied to a textile surface and in that said surface is subjected to a heat treatment at a temperature equal to the temperature crosslinking the thermally crosslinkable resin for a determined time. Advantageously, the product is applied to the textile surface in a differentiated manner, either by separate and parallel lines, or by points of varying sizes.

L'invention sera mieux comprise à l'aide de l'exemple détaillé décrit ci-après. On réalise un produit de renforcement de surfaces textiles par addition des substances suivantes:

  • a. 8000 ml d'une résine acrylique à 44% de matière sèche: cette résine est thermoréticulable à 160°C pendant une minute,
  • b. 310 ml d'un épaississant, à structure acrylique, à 50% de matière sèche,
  • c. 160 ml de n-butanol, et en mélangeant à la dispersion obtenue, sous forte agitation mécanique,
  • d. 150 g de 3,3 sulfonyl bis (benzène - sulfonyl - hydrazide) sous forme d'une poudre blanche.
The invention will be better understood using the detailed example described below. A product for reinforcing textile surfaces is produced by adding the following substances:
  • at. 8000 ml of an acrylic resin with 44% dry matter: this resin can be cross-linked at 160 ° C for one minute,
  • b. 310 ml of a thickener, acrylic structure, 50% dry matter,
  • vs. 160 ml of n-butanol, and mixing with the dispersion obtained, with strong mechanical stirring,
  • d. 150 g of 3.3 sulfonyl bis (benzene - sulfonyl - hydrazide) in the form of a white powder.

Le produit de renforcement ainsi obtenu est appliqué selon la technique sérigraphique sur une pièce de tissu en laine pure pesant 400 grammes au mètre carré destinée à la confection draperie homme. Le produit ne traverse pas le tissu. La pièce, sur laquelle a été apliqué par points le produit de renforcement, est soumise pendant 1 minute à un traitement thermique à 160°C. Pendant la première partie du traitement thermique, l'eau contenue dans le produit de renforcement s'évapore, puis la température augmentant l'agent porogène se décompose et libère de l'azote, a partir de 130°C environ jusqu'à 155°C environ, ce qui crée des micropores dans la résine qui a déjà commencé à se réticuler. Une fois la réticulation terminée, la pièce de tissu ainsi renforcée a une main, une souplesse qui conviennent à son utilisation comme devant de veston, et d'autre part les résistances au frottement et au nettoyage à sec de la résine sur le tissu sont suffisantes pour cet usage. La pièce pèse alors environ 500 grammes au mètre carré.The reinforcement product thus obtained is applied according to the screen printing technique to a piece of pure wool fabric weighing 400 grams per square meter intended for making men's drapery. The product does not pass through the fabric. The part, on which the reinforcement product has been applied by points, is subjected for 1 minute to a heat treatment at 160 ° C. During the first part of the heat treatment, the water contained in the reinforcing product evaporates, then the temperature increasing the blowing agent decomposes and releases nitrogen, from approximately 130 ° C to 155 ° C approximately, which creates micropores in the resin which has already started to crosslink. Once the crosslinking is complete, the piece of fabric thus reinforced has a hand, a flexibility which is suitable for its use as front of a jacket, and on the other hand the resistance to friction and to dry cleaning of the resin on the fabric are sufficient for this use. The coin then weighs approximately 500 grams per square meter.

L'invention n'est pas limitée à l'exemple décrit. L'homme de métier pourra facilement choisir, en fonction de la surface textile à renforcer et de l'utilisation qui doit en être faite, d'une part la résine thermoréticulable, d'autre part l'agent porogène, et enfin les éventuels autres constituants du produit de renforcement. De même il aura à choisir les proportions de chacun de ces constituants et la quantité de produit à appliquer en fonction du renforcement et de la souplesse désirés. En ce qui concerne l'agent porogène il a été remarqué que, de manière surprenante, par rapport aux autres utilisations qui en sont faites notamment dans le PVC souple où les proportions de 5 à 15% sont habituelles, dans le produit de renforcement selon l'invention une proportion de 0,5 à 5% est suffisante pour obtenir la souplesse souhaitée. Une explication pourrait être que l'agitation mécanique nécessaire pour incorporer l'agent porogène sous forme de poudre dans la dispersion aqueuse apporte dans le produit de l'air qui est en lui-même un agent porogène.The invention is not limited to the example described. Those skilled in the art can easily choose, depending on the textile surface to be reinforced and the use to be made of it, on the one hand the heat-crosslinkable resin, on the other hand the blowing agent, and finally any other constituents of the reinforcement product. Likewise, he will have to choose the proportions of each of these constituents and the quantity of product to be applied depending on the reinforcement and flexibility desired. With regard to the blowing agent, it has been noted that, surprisingly, compared to the other uses which are made of it, in particular in flexible PVC where the proportions of 5 to 15% are usual, in the reinforcing product according to the invention. he invention a proportion of 0.5 to 5% is sufficient to obtain the desired flexibility. One explanation could be that the mechanical agitation necessary to incorporate the blowing agent in powder form into the aqueous dispersion brings into the product air which is in itself a blowing agent.

L'invention s'applique particulièrement bien aux surfaces textiles entrant dans la confection de draperie homme, notamment les devants de veston, et également dans la confection d'articles féminins; elle a cependant vocation à s'appliquer toutes les fois où on cherche à appliquer sur une surface textile une matière de renforcement, résistant au frottement et au nettoyage à sec, et tout en voulant conserver à la pièce textile suffisamment de souplesse et de main.The invention is particularly applicable to textile surfaces used in the manufacture of men's drapery, in particular the fronts of jackets, and also in the manufacture of women's articles; it is, however, intended to be applied whenever it is sought to apply a reinforcing material on a textile surface, resistant to friction and to dry cleaning, and while at the same time wishing to keep the textile part sufficiently flexible and handy.

Claims (14)

1. Resin based product for reinforcing plane textile surfaces containing a pore-forming agent, characterized in that
said .resin is a thermo-crosslinkable resin in aqueous dispersion,
said pore-forming agent is a powder nonsolu- ble in water, incorporated in the aqueous dispersion by mechanical stirring and achieves its pore forming action at a temperature ranging between the water boiling point and the resin crosslinking temperature.
2. Product according to claim 1, characterized in that the thermo-crosslinkable resin, selected from acrylic or polyurethane resins, has a crosslinking temperature lower than 180°C.
3. Product according to any one of claims 1 or 2, characterized in that the pore-forming agent is a substance which decomposes by heating with formation of a volatile sub-product.
4. Product according to claim 3, characterized in that the pore-forming agent is selected from the derivatives of hydrazide, decomposition of which releases nitrogen.
5. Product according to claim 4, characterized in that the pore-forming agent is 3,3'-sulfonyl-bis-(benzene-sulfonyl-hydrazide).
6. Product according to any one of the preceding claims, characterized in that it contains from 0.5 to 5% of pore-forming agent.
7. Product according to any one of the preceding claims, characterized in that it also comprises a thickening agent compatible with the thermo-crosslinkable resin.
8. Product according to any one of the preceding claims, characterized in that it also comprises an agent limiting evaporation of the water, in particular n-butanol.
9. Process for reinforcing plane textile surfaces, characterized in that it consists in applying on the textile surface the reinforcing product according to any one of the preceding claims, and in that said surface is subjected during a determined period of time to a heat treatment at a temperature higher than the boiling temperature of the water and sufficient for, on the one hand, the crosslinking of the resin and, on the other hand, the pore-forming action to take place.
10. Process according to claim 9, characterized in that the reinforcing product is applied by the screen-printing technique.
11. Process according to any one of claims 9 or 10, characterized in that the heat treatment consists in heating for 1 minute at 160°C a reinforcing product based on acrylic resin and containing 3,3'-sulfonylbis(benzene-sulfonyl-hydrazide).
12. Application of the product and of the process according to any one of the preceding claims to the reinforcement of textile pieces intended for manufacturing garments, particularly men's clothing.
EP19850400527 1984-03-20 1985-03-20 Product for reinforcing a flat textile surface, process for its manufacture and applications Expired EP0157690B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8404295 1984-03-20
FR8404295A FR2561678B1 (en) 1984-03-20 1984-03-20 TEXTILE PLANE SURFACE REINFORCEMENT PRODUCT, METHOD FOR IMPLEMENTING SAME AND APPLICATIONS

Publications (2)

Publication Number Publication Date
EP0157690A1 EP0157690A1 (en) 1985-10-09
EP0157690B1 true EP0157690B1 (en) 1988-10-26

Family

ID=9302238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850400527 Expired EP0157690B1 (en) 1984-03-20 1985-03-20 Product for reinforcing a flat textile surface, process for its manufacture and applications

Country Status (4)

Country Link
EP (1) EP0157690B1 (en)
DE (1) DE3565868D1 (en)
ES (1) ES8701878A1 (en)
FR (1) FR2561678B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1439984A (en) * 1965-04-01 1966-05-27 Process for manufacturing a porous and aerated synthetic material and material obtained by this process
CH611101GA3 (en) * 1976-10-29 1979-05-31
GB2033395B (en) * 1978-11-03 1983-02-16 Reed International Ltd Production of foamed sheet materials

Also Published As

Publication number Publication date
FR2561678A1 (en) 1985-09-27
ES541388A0 (en) 1986-12-01
EP0157690A1 (en) 1985-10-09
ES8701878A1 (en) 1986-12-01
FR2561678B1 (en) 1986-08-22
DE3565868D1 (en) 1988-12-01

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