EP1348799A1 - Procédé de fabrication d'un textile enduit et expansé - Google Patents
Procédé de fabrication d'un textile enduit et expansé Download PDFInfo
- Publication number
- EP1348799A1 EP1348799A1 EP03290798A EP03290798A EP1348799A1 EP 1348799 A1 EP1348799 A1 EP 1348799A1 EP 03290798 A EP03290798 A EP 03290798A EP 03290798 A EP03290798 A EP 03290798A EP 1348799 A1 EP1348799 A1 EP 1348799A1
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- EP
- European Patent Office
- Prior art keywords
- textile
- face
- crosslinking
- support
- coated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
- D06N3/186—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials one of the layers is on one surface of the fibrous web and the other layer is on the other surface of the fibrous web
-
- 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
- D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
- D06N7/0092—Non-continuous polymer coating on the fibrous substrate, e.g. plastic dots on fabrics
-
- 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
- D06N2203/00—Macromolecular materials of the coating layers
- D06N2203/02—Natural macromolecular compounds or derivatives thereof
-
- 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
- D06N2203/00—Macromolecular materials of the coating layers
- D06N2203/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N2203/041—Polyacrylic
-
- 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
- D06N2203/00—Macromolecular materials of the coating layers
- D06N2203/06—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06N2203/068—Polyurethanes
-
- 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
- D06N2205/00—Condition, form or state of the materials
- D06N2205/04—Foam
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/106—Roughness, anti-slip, abrasiveness
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/14—Properties of the materials having chemical properties
- D06N2209/147—Stainproof, stain repellent
Definitions
- the present invention relates to a process for preparing textiles expanded and coated.
- Printed coated fabrics currently available for example for the production of tablecloths or other articles in the field of tableware, generally have a coating layer based on PVC (polychloride vinyl) and / or halogenated polymers, in particular fluoropolymers which are detrimental in terms of recyclability. What's more, these fabrics resist poorly with food stains which remain more and more marked over the time and become increasingly difficult to remove. At the same time, they may lose their colors or print patterns, especially as and as cleaning or under the effect of light, or even give rise yellowing.
- PVC polychloride vinyl
- halogenated polymers in particular fluoropolymers
- One of the objectives of the present invention is precisely to propose a process for manufacturing a coated textile, usable in particular in the field of tableware, and not having the drawbacks mentioned above, that is to say which is anti-stain and not subject to yellowing.
- Another objective of the invention is to provide a coated textile combining the aforementioned qualities, non-slip, anti-shock and anti-heat functions. This second objective is for its part satisfied by the application on the back of the coated face of the printed textile, an expanded rubbery material.
- the difficulty encountered and overcome according to the present invention carries precisely on the calendering of a rubbery material on the back of a textile with the front side already coated.
- calendering refers to a technique for manufacturing sheets, plates or films comprising laminating a material thermoplastic between several cylinders constituting the grille.
- this calendering operation is associated with a coating of the rubbery material on the surface of a porous support, for example a fabric.
- the rubbery material is subjected to an operation of vulcanization or crosslinking during which the chemical transformation of the starting elastomeric mixture into a network reticle.
- at least one blowing agent is incorporated into the starting mixture. By decomposing under the action of heat, this agent generates gases, which gases develop bubbles in the elastomeric medium of low viscosity. This results in the expected expanded cell structure.
- the waterproof nature of the coating turns out incompatible with subsequent calendering of a layer of elastomer (s) on the opposite side.
- the sealing of the coating constitutes an obstacle to the release expansion gases.
- each material is then subjected to at least one crosslinking operation in order to transform the starting elastomeric mixture into a crosslinked network.
- this crosslinking operation is combined with an expansion operation.
- the methods for manufacturing conventional expanded rubber materials integrate the two crosslinking and expansion operations concomitantly.
- the elastomeric strip or ply is recovered at the end of the calendering operation to then be placed in an enclosure heated to the appropriate temperature for the execution of the crosslinking operation.
- the crosslinking and expansion stages are carried out simultaneously, at short notice and in continuity with the calendering operation, this makes it possible to optimize the mechanical qualities mainly in terms of elasticity, expanded rubbery cellular material thus obtained.
- these two crosslinking and expansion stages are carried out continuously by horizontal displacement of the material which has just been calendered, in an enclosure, preferably a tunnel brought to the appropriate temperature for the concomitant execution of the crosslinking and of expansion, not in an oven and on a vertical plane in accordance with conventional methods.
- Cross-linking and expansion reactions are generally performed at atmospheric pressure.
- the rubber mixture expandable may, following the calendering operation and beforehand during the crosslinking and expansion operation, undergo a graining operation.
- This operation aims to apply on the exposed face of the calendered rubbery cellular material unevenness forming protrusions and hollows whose all surfaces have a certain grain and are more or less regular and not smooth.
- the appearance of the product is considerably improved.
- after calendering the rubbery material there is printed in relief, on the exposed face of the layer obtained by calendering, that is to say not linked to the textile support, any pattern which will be preserved at the level of the 'finished article.
- the supporting fabric may comprise or consist of a fabric, a nonwoven or a mesh, the fabric and the nonwoven being preferred. It can be either natural, artificial or synthetic textile. It may be an unbleached or white textile, a dyed woven textile, a mass-dyed textile, a dyed woven textile or a printed textile. According to a preferred variant of the invention, this textile support is dyed or has a printed face.
- the choice of the texture of the textile support is generally made so that with a coating of the order of 25 g / m2 the air permeability of the support in a coated form is sufficient to be compatible with the production of calendering, crosslinking and expansion of the rubbery material on its back.
- the textile support generally has a texture of 24 ⁇ 24 threads per cm for a title of 34 ⁇ 34 metric numbers.
- a textile support having a warp texture of 24 to 40 threads per cm, or 28 to 50 metric numbers and / or a weft of 16 to 30 threads per cm, or 28 to 50 metric numbers are possible to also use.
- the composition of the coating layer is preferably compatible with an application on a textile support, either by calendering or extrusion, or by loom to be coated with a tunnel.
- the first coating layer is applied at a rate of approximately 10 to 25 g / m 2 on the surface of the first face of the second layer.
- the coatings derived from at least one acrylic resin, of polyurethane or one of their mixtures prove to be particularly advantageous in the context of the present invention.
- This coating layer may also contain various additives, in particular to improve and / or modify the mechanical properties of the final printed coated textile, its UV resistance. It may in particular be plasticizer (s), screw protection agent (s). -to UV ...
- the weight ratio coating layer / textile support is between 5 and 15 and preferably 7 and 12.
- this coating layer and / or the texture of the textile support are adjusted to obtain the permeability required according to the invention.
- too much crossing of the coating layer causes a sealing of the textile support and causing poor expansion of the layer of rubbery material.
- a localized crossing of the coating layer causes insufficient adhesion of the rubbery material.
- the term "rubbery material” is intended to denote a material having as main component at least one natural or synthetic rubber or one of their mixtures.
- the rubbery or even elastomeric components are chosen so as to lead to a starting rubbery mixture having a Mooney index of between 40 and 80 estimated at a temperature of approximately 50 ° C. This Mooney consistometric index actually corresponds to a torque value.
- the torque to be applied is determined under determined conditions for rotating a metal disc in a sealed cylindrical chamber filled with rubber material.
- the resistance of the rubber to this rotation is the Mooney consistency of the test piece.
- the Mooney consistometric index is therefore the value of the torque exerted on the rotor, expressed in Mooney units, indicated by the device after a warm-up time of 1 minute followed by a rotor rotation time generally from 4 to 8 minutes. In the case of the present invention, this index is measured for a temperature of approximately 50 ° C. of the rotor.
- the rubber compounds suitable for the invention can be chosen from natural rubbers, synthetic rubbers based on styrene, butadiene and their mixtures.
- the initial mixture intended to constitute the expanded layer comprises at least one crosslinking system and one expansion system.
- these systems are chosen so as to be active at the same temperature, between 150 ° C. and 210 ° C.
- the crosslinking system comprises at least one crosslinking agent, also called primary accelerator.
- This crosslinking agent preferably belongs to the family of thiazoles, quinones or quinones-dioximes. It is preferably present in an amount of 0.5 to 8% by weight relative to the mass of the rubbery material to be transformed.
- This primary accelerator is preferably associated with an agent known as a secondary accelerator.
- This secondary accelerator preferably belongs to the family of metallic or non-metallic dithiocarbamates, metallic or non-metallic xanthates or also to the family of thiazoles.
- This secondary accelerator is generally present at a rate of 0.2 to 2 % by weight and more preferably from 0.2 to 1.5% relative to the weight of the rubbery material.
- the crosslinking system may be present in the mixture rubbery to be transformed at a rate of about 4 to 10% by weight relative to the weight of the rubbery material.
- the expansion system comprises at least one blowing agent.
- This swelling agent can belong to the family of azodicarbonamides or even to the family of sulfohydrazides.
- the decomposition temperature of blowing agents related to azodicarbonamides varies between 160 and 210 ° C, as for blowing agents belonging to the sulfohydrazide family, their decomposition temperature is greater than 105 ° C.
- These blowing agents are generally associated within the expansion system with at least one expansion regulator.
- the expansion regulators suitable for the present invention one can more particularly name urea and its derivatives, zinc-based compounds of zinc oxide, zinc stearate type, as well as amino compounds.
- the expansion system is incorporated in an amount of about 2 to 10% by weight of the rubbery material to be treated.
- the rubber material to be transformed can also incorporate other conventional additives such as anti-oxidation agents intended to prevent premature aging of the rubber mixture. It is also possible to incorporate charges of varying proportions. It can be reinforcing fillers such as kaolin or carbonate of magnesia or even carbon black. It can also be calcium carbonate or silicate or even ultra-fine silica.
- the fillers are in fact products which can be incorporated into said mixture without greatly lowering its mechanical qualities. By way of illustration of other fillers, mention may be made of chalk, kaolin, baryte sulphate, kieselguhr, talc and lithopone.
- One or more plasticizers may also be incorporated into the rubber mixture.
- Oil-derived oils such as naphthenic, aromatic and / or aliphatic compounds
- plasticizers of the phthalate family such as dioctyphthalate (DOP) and flame-retardant plasticizers of the phosphate and chlorinated paraffin type are particularly suitable as plasticizers.
- the rubber mixture may include pigments for coloring the final material, odorants to combat the odor of vulcanized rubber, flame retardants for fire protection, hardeners to prevent deformation during certain types of manufacturing, retarders to sometimes moderate the too rapid action of accelerators, peptizers to soften rubber, etc.
- the selection of these additives as well as the adjustment of their respective proportions in the rubber mixture to be transformed is of course the skill of the skilled person.
- the coated and expanded textile can also be protected at its level. coated side. This protection can be ensured by applying a varnish especially of acrylic type, of a silicone-based resin or a treatment fluorinated. Depending on the desired effect, the protective varnish can be colorless or colored but translucent to reveal the printed pattern (s).
- the coated and expanded textile obtained according to the invention has in particular great flexibility as well as good resistance to aging, weathering, ultraviolet radiation as well as food stains.
- Stain-resistant additives of known type can be introduced, for example, into the final protective varnish to increase the stain-resistant power of the coated textile, for example with regard to food stains.
- the invention applies more particularly to the manufacture of coated tablecloths or other articles intended for the tableware or also to articles intended for interior decoration in particular the wall textile.
- FIGURE
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Abstract
Description
Un autre objectif de l'invention est de fournir un textile enduit associant aux qualités précitées, des fonctions anti-dérapantes, anti-chocs et anti-chaleur. Ce second objectif est pour sa part satisfait par l'application au verso de la face enduite du textile imprimé, un matériau caoutchouteux expansé.
- on dispose d'un textile formant support comportant une première face et une deuxième face et présentant le cas échéant des motifs imprimés sur sa deuxième face,
- on dépose sur la deuxième face du support textile un matériau d'enduction,
- on procède à la réticulation du matériau d'enduction,
- on dépose sur la première face du support textile un matériau caoutchouteux,
- on procède successivement ou simultanément à la réticulation et l'expansion du matériau caoutchouteux,
- on réalise éventuellement un traitement de protection de la face enduite du textile.
Consécutivement à cette étape de calandrage, chaque matériau est ensuite soumis à au moins une opération de réticulation afin de transformer le mélange élastomérique de départ en un réseau réticulé.
Dans le cas du matériau caoutchouteux, cette opération de réticulation est combinée à une opération d'expansion.
Selon une variante préférée de l'invention, les étapes de réticulation et d'expansion sont conduites simultanément, à bref délai et dans la continuité de l'opération de calandrage, ceci permet d'optimiser les qualités mécaniques principalement en terme d'élasticité, du matériau cellulaire caoutchouteux expansé ainsi obtenus.
Plus préférentiellement, ces deux étapes de réticulation et d'expansion sont réalisées en continu par déplacement horizontal du matériau venant d'être calandré, dans une enceinte, de préférence un tunnel porté à la température adéquate pour l'exécution concomitante de la réticulation et de l'expansion, et non au sein d'une étuve et sur un plan vertical conformément aux procédés conventionnels.
Dans ce cas particulier, après calandrage du matériau caoutchouteux, on imprime en relief, sur la face exposée de la couche obtenue au calandrage, c'est-à-dire non liée au support textile, un motif quelconque qui sera conservé au niveau de l'article fini.
Le choix de la contexture du support textile est généralement réalisé de manière à ce qu'avec une enduction de l'ordre de 25 g/m2 la perméabilité à l'air du support sous une forme enduite soit suffisante pour être compatible avec la réalisation des opérations de calandrage, réticulation et expansion du matériau caoutchouteux en son verso.
En l'occurrence, le support textile présente généralement une contexture de 24x24 fils par cm pour un titre de 34x34 numéros métriques. Toutefois, il est possible de mettre également en oeuvre un support textile possédant une contexture chaíne de 24 à 40 fils par cm, soit 28 à 50 numéros métriques et/ou une trame de 16 à 30 fils par cm, soit 28 à 50 numéros métriques.
Préférentiellement, la première couche d'enduction est appliquée à raison d'environ 10 à 25g/m2 en surface de la première face de la deuxième couche.
Cette couche d'enduction peut par ailleurs contenir divers additifs notamment pour améliorer et/ou modifier les propriétés mécaniques du textile enduit imprimé final, sa résistance aux U.V. Il peut notamment s'agir de plastifiant(s), agent(s) de protection vis-à-vis des U.V. ...
Selon une variante préférée de l'invention, le rapport pondéral couche d'enduction/support textile est compris entre 5 et 15 et de préférence 7 et 12.
En l'occurrence, une traversée trop importante de la couche d'enduit entraíne une étanchéité du support textile et provoquant une mauvaise expansion de la couche de matériau caoutchouteux. A l'inverse, une traversée localisée de la couche d'enduction entraíne une adhérence insuffisante du matériau caoutchouteux.
Ces deux difficultés sont précisément surmontées en ajustant la quantité de ladite sur-couche et/ou la contexture du support textile de manière à leur conférer une perméabilité globale supérieure à 200 ml d'air par minute évaluée pour une surface de 10 cm2 et une différence de pression de 5 millibars.
Selon une variante préférée de l'invention, les composants caoutchouteux ou encore élastomériques sont choisis de manière à conduire à un mélange caoutchouteux de départ possédant un indice Mooney compris entre 40 et 80 estimé à une température d'environ 50°C.
Cet indice consistométrique Mooney correspond en fait à une valeur de couple de torsion. On mesure le couple à appliquer dans des conditions déterminées pour faire tourner un disque métallique dans une chambre cylindrique étanche remplie du matériau caoutchouteux. La résistance opposée par le caoutchouc à cette rotation, exprimée en unité arbitraire, est la consistance Mooney de l'éprouvette.
L'indice consistométrique Mooney est donc la valeur du couple de torsion exercée sur le rotor, exprimé en unité Mooney, indiqué par l'appareil après un temps de préchauffage de 1 minute suivi d'un temps de rotation du rotor généralement de 4 à 8 minutes. Dans le cas de la présente invention, cet indice est mesuré pour une température d'environ 50°C du rotor. Pour plus de précision, on se reportera à la notice publiée par la norme française NFT43005 en date de décembre 1991.
Les composés caoutchouteux convenant à l'invention peuvent être choisis parmi les caoutchoucs naturels, les caoutchoucs synthétiques à base de styrène, butadiène et leurs mélanges.
Outre ses composants caoutchouteux, le mélange initial destiné à constituer la couche expansée comprend au moins un système de réticulation et un système d'expansion.
Selon une variante particulière de l'invention, ces systèmes sont choisis de manière à être actifs à une même température, comprise entre 150°C et 210°C.
En ce qui concerne plus particulièrement le système de réticulation, il comprend au moins un agent réticulant dit encore accélérateur primaire. Cet agent réticulant appartient de préférence à la famille des thiazoles, des quinones ou quinones-dioximes.
Il est de préférence présent à raison de 0,5 à 8 % en poids par rapport à la masse du matériau caoutchouteux à transformer.
Cet accélérateur secondaire appartient de préférence à la famille des dithiocarbamates métalliques ou non métalliques, des xanthates métalliques ou non métalliques ou encore à la famille des thiazoles.
La température de décomposition des agents gonflants apparentés aux azodicarbonamides varie entre 160 et 210°C, quant aux agents gonflants appartenant à la famille des sulfohydrazides, leur température de décomposition est supérieure à 105°C.
Ces agents gonflants sont généralement associés au sein du système d'expansion à au moins un régulateur d'expansion.
A titre représentatif des régulateurs d'expansion convenant à la présente invention, on peut plus particulièrement nommer l'urée et ses dérivés, les composés à base de zinc de type oxyde de zinc, stéarate de zinc, ainsi que les composés aminés.
Généralement le système d'expansion est incorporé à raison d'environ 2 à 10 % en poids du matériau caoutchouteux à traiter.
Il peut également être incorporé dans le mélange caoutchouteux un ou plusieurs agents plastifiants. Conviennent notamment comme agents plastifiants, les huiles dérivées du pétrole tels les composés naphténiques, aromatiques et/ou aliphatiques, les plastifiants de la famille des phtalates comme le dioctyphtalate (DOP) et les plastifiants ignifugeants de type phosphates et paraffines chlorées.
Outre ces additifs, le mélange caoutchouteux peut comprendre des pigments à des fins de coloration du matériau final, des odorants pour combattre d'odeur du caoutchouc vulcanisé, des ignifugeants pour la protection contre l'incendie, des durcisseurs pour éviter les déformations au cours de certaines fabrications, des retardateurs pour le cas échéant modérer parfois l'action trop rapide des accélérateurs, des peptisants pour ramollir le caoutchouc, etc.
La sélection des ces additifs ainsi que l'ajustement de leurs proportions respectives dans le mélange caoutchouteux à transformer relèvent bien entendu du savoir faire de l'homme de l'art.
Des additifs « anti-taches » de type connu peuvent être introduits par exemple dans le vernis final de protection pour augmenter le pouvoir anti-taches du textile enduit, par exemple vis-à-vis des taches alimentaires.
L'invention s'applique plus particulièrement à la fabrication de nappes enduites ou autres articles destinés à l'art de la table ou encore à des articles destinés à la décoration d'intérieur en particulier le textile mural.
Formule : | |
- Suspension résine acrylique (60 % E.S.) | 50-75 |
- Suspension résine polyuréthane aliphatique (40% E.S.) | 25-50 |
- Epaississant | 2-6 |
- Polymère fluoré | 5-15 |
- Agent de réticulation (dérivé ethérifié de mélasmine | |
formoldehyde) | 1-6 |
- Antimousse | 0.5-2 |
Composition du mélange caoutchouteux utilisé : | |
en poids | |
* Caoutchouc naturel type SMR CV | 100 |
* Peptisant (dibenzyl amidodiphényl disulfure) | 0,1 - 0,2 |
* Factice | 5 - 15 |
* Craie | 20 - 60 |
* Kaolin | 10 - 30 |
* Plastifiant naphténique | 30 - 50 |
* Paraffine | 1 - 4 |
* ZnO | 5 - 10 |
* Acide stéarique | 1 - 3 |
* Agents de protection | 1 - 3 |
* Soufre | 1 - 2,5 |
* Diéthyl dithiocarbamate de zinc | 0,3 - 1,4 |
* Disulfure de benzothiazyle | 1 - 2,5 |
* Agent gonflant type Sulfohydrazide | 4 - 10 |
* Urée | 4 - 10 |
Claims (8)
- Procédé pour la préparation d'un textile enduit et expansé, caractérisé en ce que :on dispose d'un textile formant support comportant une première face et une deuxième face et présentant le cas échéant des motifs imprimés sur sa deuxième face,on dépose sur la deuxième face du support textile un matériau d'enduction,on procède à la réticulation du matériau d'enduction,on dépose sur la première face du support textile un matériau caoutchouteux,on procède successivement ou simultanément à la réticulation et l'expansion du matériau caoutchouteux, eton réalise éventuellement un traitement de protection de la face enduite du textile.
- Procédé selon la revendication 1, caractérisé en ce que la première couche d'enduction est appliquée à raison d'environ 10 à 25g/m2 en surface de la première face de la deuxième couche.
- Procédé selon la revendication 1 ou 2 caractérisé en ce que le rapport pondéral couche d'enduction/support textile est compris entre 5 et 15 et de préférence 7 et 12.
- Procédé selon l'une des revendications 1 à 3 caractérisé en ce que la couche d'enduction est à base d'au moins une résine acrylique, de polyuréthane ou un de leurs mélanges.
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le support textile comprend ou consiste en un tissu, un non-tissé ou une maille.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce le support textile présente une contexture de 24x24 fils par cm pour un titre de 34x34 numéros métriques.
- Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le support textile est teint ou présente une face imprimée.
- Procédé selon l'une quelconque des revendications 1 à 7 caractérisé en ce que les composants du matériau caoutchouteux de la première couche sont choisis de manière à conduire à un mélange caoutchouteux de départ possédant un indice de MOONEY compris entre 40 et 80 estimé à une température d'environ 50°C.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0203945 | 2002-03-28 | ||
FR0203945A FR2837847B1 (fr) | 2002-03-28 | 2002-03-28 | Textile enduit et expanse |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1348799A1 true EP1348799A1 (fr) | 2003-10-01 |
Family
ID=27799289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03290798A Withdrawn EP1348799A1 (fr) | 2002-03-28 | 2003-03-28 | Procédé de fabrication d'un textile enduit et expansé |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1348799A1 (fr) |
FR (1) | FR2837847B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2739779A1 (fr) * | 2011-08-04 | 2014-06-11 | Chung, Sun-Kee | Feuille de tissu textile à résistance aux tâches et aux liquides et son procédé de production |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2890085A1 (fr) * | 2005-08-29 | 2007-03-02 | Veninov Soc Par Actions Simpli | Textile enduit et expanse, son procede de fabrication, et article comprenant un tel textile |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2306830A1 (fr) * | 1975-04-08 | 1976-11-05 | Joos Pierre | Etoffe non tissee avec une resine speciale souple et son procede de fabrication |
US4018957A (en) * | 1975-04-01 | 1977-04-19 | Gaf Corporation | Coated fabric sheet-type material having resilient backing and process for making same |
US4305985A (en) * | 1979-05-29 | 1981-12-15 | Ebnother Ag Sempach-Station | Wall covering material |
JPS6189381A (ja) * | 1984-10-08 | 1986-05-07 | Higashi Kagaku:Kk | 内装材の裏打仕上法 |
GB2319989A (en) * | 1996-12-06 | 1998-06-10 | Solvay | Coated decorative sheet |
EP1116814A1 (fr) * | 2000-01-12 | 2001-07-18 | Pennel Industries S.A. | Textile enduit imprimé à base d'un composant polyoléfinique |
-
2002
- 2002-03-28 FR FR0203945A patent/FR2837847B1/fr not_active Expired - Fee Related
-
2003
- 2003-03-28 EP EP03290798A patent/EP1348799A1/fr not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4018957A (en) * | 1975-04-01 | 1977-04-19 | Gaf Corporation | Coated fabric sheet-type material having resilient backing and process for making same |
FR2306830A1 (fr) * | 1975-04-08 | 1976-11-05 | Joos Pierre | Etoffe non tissee avec une resine speciale souple et son procede de fabrication |
US4305985A (en) * | 1979-05-29 | 1981-12-15 | Ebnother Ag Sempach-Station | Wall covering material |
JPS6189381A (ja) * | 1984-10-08 | 1986-05-07 | Higashi Kagaku:Kk | 内装材の裏打仕上法 |
GB2319989A (en) * | 1996-12-06 | 1998-06-10 | Solvay | Coated decorative sheet |
EP1116814A1 (fr) * | 2000-01-12 | 2001-07-18 | Pennel Industries S.A. | Textile enduit imprimé à base d'un composant polyoléfinique |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 198625, Derwent World Patents Index; Class A32, AN 1986-158107, XP002226530 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2739779A1 (fr) * | 2011-08-04 | 2014-06-11 | Chung, Sun-Kee | Feuille de tissu textile à résistance aux tâches et aux liquides et son procédé de production |
EP2739779A4 (fr) * | 2011-08-04 | 2015-04-15 | Chung Sun Kee | Feuille de tissu textile à résistance aux tâches et aux liquides et son procédé de production |
Also Published As
Publication number | Publication date |
---|---|
FR2837847B1 (fr) | 2005-10-21 |
FR2837847A1 (fr) | 2003-10-03 |
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