FR2803607A1 - PRINTED COATED TEXTILE BASED ON EPICHLORHYDRIN ELASTOMER - Google Patents

Abstract

Printed textile product comprises a textile substrate with a coating of vulcanized epichlorohydrin elastomer, the coating being printed on the side not bonded to the substrate. An Independent claim is also included for a process for producing the printed textile product, comprising coating the substrate with the elastomer, printing designs on the coating, vulcanizing the elastomer and optionally applying a protective varnish.

Description

The present invention relates to printed coated textiles in which

  the coating layer is based on epichlorohydrin elastomer as well

  than a process for their preparation.

  Printed coated fabrics currently available, for example for the production of tablecloths or other articles of the tableware industry, generally have a coating layer of PVC (polyvinyl chloride)

  and / or halogenated polymers, in particular fluoropolymers.

  These coated fabrics are nevertheless not very flexible and have insufficient resistance to aging by becoming stiff and brittle but also sticky to the touch. In particular, they have very poor resistance to

  bad weather and ultra-violet rays.

  Furthermore, these fabrics are poorly resistant to food stains which remain more and more marked over time and become more and more difficult to remove. At the same time, they may lose their colors or their printing patterns, especially during cleaning or under

  the effect of light, or give rise to yellowing.

  PVC coated fabrics also have poor heat resistance so that they are damaged, for example by laying hot dishes. The objective of the present invention is to provide coated textiles which may have printed patterns or decorations, usable in particular in the field of tableware, and which do not have the drawbacks

mentioned above.

  Another objective of the invention is to provide coated textiles which are particularly flexible and which retain their flexibility during use or

  during their storage, as well as during their successive cleaning.

  Another objective of the invention is also to provide a coated textile having satisfactory "printability" characteristics allowing in particular the printing of patterns or decorations placed resistant to aging in particular over time, with respect to the shelves. bright, cleanings,

heat, etc ...

  Another object of the invention is also to provide a method for the

  production of such printed coated textiles which is simple and inexpensive.

  To this end, the subject of the invention is a coated textile with printed patterns, characterized in that it comprises a textile sublayer forming a support associated with a coating layer based on vulcanized epichlorohydrin elastomer, said layer coating having one or more pattern (s) printed on its surface not linked to the textile underlay. The invention also provides a process for the preparation of the coated textile printed above, characterized in that - a textile forming a support is taken, a coating layer based on epichlorohydrin is deposited on said textile support, - one prints the desired motif (s) or decor (s), - the resulting assembly is vulcanized, and

  - if necessary, apply a protective varnish.

  The coated textile printed according to the invention is described in more detail below.

after.

  According to the invention, by "printed" means the application of patterns or decorations to the surface of the coating layer of the coated textile, in a discontinuous and varied manner, generally using inks of acrylic type and / or modified polyurethane ?, as opposed to a homogeneous coloring in the

  mass leading to relatively uniformly colored materials.

  The inventors have discovered, quite surprisingly, that by applying a coating based on epichlorohydrin elastomer on a textile support, it was then possible to print one or more motif (s) or decoration (s) by transfer or rotogravure printing techniques, in particular using acrylic and / or polyurethane ink

possibly modified.

  The coating layer comprises, in addition to the abovementioned epichlorohydrin component, various additives known per se for modifying / improving the mechanical properties, the resistance to light, to heat, etc. such as

  plasticizers, fillers, UV or heat stabilizers, vulcanizing agent.

  The composition of the coating layer is typically as defined below: - Epichlorohydrin 100 parts by weight - EthyleneVinyl-Acetate (EVA) copolymer 5 to 30 parts by weight - Fillers 30 to 80 parts by weight - Plasticizers 5 to 15 parts by weight - UV and heat stabilizers 1 to 3 parts by weight - Vulcanizing agent 1 to 6 parts by weight - Dyes 10 to 40 parts by weight The textile layer forming a support may comprise or consist of a fabric, a nonwoven or mesh, the fabric or nonwoven being

  favorite. It can be either natural, artificial or synthetic textile.

  The aforementioned coating composition is applied to the textile support by calendering. We then carry out the actual printing of one or more motif (s)

  or desired decor (s) on the resulting coated textile.

  Two methods can be used for this purpose: Printing can be done by transfer. In this case, the pattern (s) are previously produced on transfer paper using techniques

preparatory known per se.

  The printed paper is then assembled to the textile coated under pressure and hot. The temperature is generally of the order of 100 ° C. and the pressure of

around 1 bar.

  The pattern (s) to be printed are brought into contact with the layer

  coating and the paper is removed after cooling of the assembly.

  Printing can also be done by gravure printing.

  In this case, the coated textile is printed by passing between rollers

  with the motif (s) debossed and inked.

  The printed coated textile resulting from one or other of these operations is then vulcanized. Depending on the case, this vulcanization step can be

  performed hot continuously or discontinuously, possibly under pressure.

  The final printed coated textile can then be protected by a varnish, in particular of acrylic type. Depending on the desired effect, the protective varnish can be colorless or colored but translucent to reveal the

  printed motif (s). It may in particular be a varnish with anti-

food stains.

  The coated textile printed according to the invention has in particular great flexibility as well as good resistance to aging, weathering, UV rays. It is easily cleanable and the applied prints have good adhesion to the textile support and good resistance over time. ,

  especially during bad weather, successive washings.

  It also has good heat resistance and thus supports

  contact with hot dishes for example.

  In addition, no appearance of sticky feel is observed as

its use.

  The coated textile printed according to the invention has good

  liquid impermeability characteristics.

  The invention also relates to articles comprising a printed coated textile as defined above and applies more particularly to the manufacture of printed coated tablecloths or other articles intended for the art of

Table.

  The invention will now be illustrated by means of an example which should not

  not be considered limiting.

EXAMPLE

  The different production phases of a printed coated tablecloth are as follows:

  1) Use of a 75/25 cotton-polyester support; weight 75 g / m2.

  2) Calendering on the support of an elastomer film of 180 g / m2 -

calendering temperature 100 C.

  Coating composition used: - Epichlorohydrin 100 parts by weight Ethylene Vinyl Acetate (EVA) 20 parts by weight - Zinc oxide 10 parts by weight - Magnesia 10 parts by weight - Stearic acid 5 parts by weight - Silica 20 parts by weight - Chalk 20 parts by weight - Dioctyl Phthalate (DOP) 11 parts by weight - Titanium oxide 35 parts by weight Anti UV 2 parts by weight - Vulcanizing agents 5.7 parts by weight

  Powder coating with calcium stearate.

3) Printing

  Use of printed transfer paper.

  Doubling at 100 C and under pressure of the transfer paper with the calendered fabric.

  The print is in contact with the elastomer.

  4) Varnishing Varnishing by rotogravure using a resin-based varnish

  modified polyurethane acrylics to make the item stain resistant.

  Deposit of 20 g / m2 wet of a 15% solution of dry extract.

Drying at around 80 C.

) Vulcanization

  Continuous vulcanization in a tunnel.

Speed 5 meters per minute.

Tunnel temperature 180 C.

Claims (12)

  1. Textile coated with printed patterns, characterized in that it comprises a textile sublayer forming a support associated with a coating layer based on vulcanized epichlorohydrin elastomer, said coating layer having one or more patterns ( s) printed on its surface not linked to the textile underlay. 2. Textile coated with printed patterns according to claim 1, characterized in that the textile underlay comprises or consists of a fabric, a nonwoven   or a mesh, preferably a fabric or a nonwoven.   3. Textile coated with printed patterns according to claim 1 or 2,   characterized in that it is provided with a protective varnish applied to the printed coating layer, preferably a protective varnish anti-stain properties.   4. Process for the preparation of a coated textile with printed patterns according to   Any of claims 1 to 3, characterized in that:   - a textile forming a support is taken, - a coating layer based on epichlorohydrin is deposited on said textile support, - the desired motif (s) or decoration (s) is printed, - the material is vulcanized resulting set, and   - if necessary, apply a protective varnish.   5. Method according to claim 4, characterized in that the textile forming the support comprises or consists of a fabric, a nonwoven or a mesh,   preferably a fabric or a nonwoven.   6. Method according to claim 4 or 5, characterized in that the composition of the coating layer is as follows - Epichlorohydrin 100 parts - Ethylene-Vinyl-Acetate Copolymer 5 to 30 parts - Fillers 30 to 80 parts - Plasticizers 5 to 15 parts - UV and heat stabilizers 1 to 3 parts - Vulcanizing agent 1 to 6 parts - Dyes 10 to 40 parts   7. Method according to any one of claims 4 to 6, characterized   in that the coating layer is applied by calendering on the textile support.   8. Method according to any one of claims 4 to 7, characterized   in that the printing of the motif (s) or decoration (s) is carried out by transfer.   9. Method according to any one of claims 4 to 7, characterized   in that the printing of the motif (s) or decoration (s) is carried out by gravure printing. 10. Method according to claim 8 or 9, characterized in that the printing is carried out using inks of acrylic and / or polyurethane type possibly modified.   11. Articles comprising a coated textile with printed patterns according to one   any of claims I to 10.   12. Articles according to claim 11, characterized in that they consist in tablecloths.