ES2234784T3 - TEXTILE MATERIALS COVERED BASED ON ELASTOMERO DE EPICLOHIDRINA. - 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

Coated textile materials based on epichlorohydrin elastomer.

The present invention relates to materials coated textiles in which the coating layer is made to base of epichlorohydrin elastomer, as well as to a procedure for its preparation

Printed coated fabrics available currently, for example for the realization of tablecloths or others technical field items of the dining table present generally a layer of PVC coating (polychloride vinyl) and / or halogenated polymers in particular of polymers fluoridated

These coated fabrics are not much less very flexible and have an aging resistance insufficient, becoming rigid and brittle but also sticky to the touch. They have especially a very bad resistance against the weather and ultraviolet radiation.

On the other hand, these tissues resist poorly food stains that are increasingly marked on the Time course and become increasingly difficult to eliminate. From parallel form, they may lose their colors or their motives printing, especially after washing or under the effect of the light, or also giving rise to a yellowing.

PVC coated fabrics also have a bad heat resistance, so that they get damaged, by for example, by placing hot dishes on them.

The objective of the present invention is supply coated textile materials that may present printed motifs or decorations, especially usable in the dining table technique and they do not present the drawbacks mentioned above.

Another object of the invention is to provide particularly flexible coated textile materials and that retain their manageability during use or storage, as well as during successive washing.

Another object of the invention is also supply a coated textile material that presents satisfactory "printability" characteristics that allow in particular the printing of motifs or decorations resistant to aging, particularly over time, compared to light radiation, cleaning, heat, etc.

Another object of the invention is also provide a procedure for the production of such materials Printed coated textiles that are simple and inexpensive.

For this purpose, the invention aims at a textile material covered with printed motifs, characterized because it contains a textile sublayer that forms support associated with a coating layer based on epichlorohydrin elastomer vulcanized, said coating layer having one or several motive (s) printed on its surface no attached to the textile sublayer.

The invention also provides a procedure for the preparation of the coated textile material printed earlier, characterized in that

- a textile material is formed that forms support,

- is deposited on said support textile material a coating layer based on epichlorohydrin,

- the motive (s) are printed or desired decoration (s),

- the resulting set is vulcanized, and

- eventually a varnish of protection.

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

According to the invention, "printed" means understand the application of motifs or decorations on the surface of the coating layer of the coated textile material, so discontinuous and varied, usually with the help of type inks acrylic and / or modified polyurethane?, as opposed to a homogeneous coloration in the mass that leads to colored materials in a relatively uniform way.

The inventors have discovered so truly amazing that by applying a coating based on epichlorohydrin elastomer on a support textile material, it could then print one or more motive (s) or decoration (s) for printing techniques by transfer or heliogravure, especially with the help of acrylic and / or polyurethane ink optionally modified.

The coating layer contains, in addition to the epichlorohydrin compound cited above, various additives known by themselves to modify / improve properties mechanical, resistance to light, heat, etc., such as plasticizers, fillers, UV stabilizers, or heat, vulcanization.

The composition of the coating layer is Typically as defined above:

- Epichlorohydrin 100 parts in weight - Acetate copolymer of vinyl ethylene (EVA) 5 a 30  \ hskip0.3cm '' \ hskip0.3cm ''  \ hskip0.3cm '' - Loads 30 to 80  \ hskip0.3cm '' \ hskip0.3cm ''  \ hskip0.3cm '' - Plasticizers 5 to 15  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Stabilizers U.V. And heat 1 a 3  \ hskip0.3cm '' \ hskip0.3cm ''  \ hskip0.3cm '' - Agent of vulcanization 1 to 6  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Dyes 10 a 40  \ hskip0.3cm '' \ hskip0.3cm ''  \ hskip0.3cm ''

The textile layer that forms support can contain or be constituted by a fabric, a non-woven material or a mesh, fabric or nonwoven material being preferred. Can be treated indifferently of natural, artificial or textile material synthetic.

The coating composition cited previously applied to the textile support by calendering.

The actual printing is done afterwards. of one or more motive (s) or decoration (s) desired (s) on the resulting coated textile material.

To do this, two can be implemented methods:

Printing can be done by transfer. In this case, the motive (s) are previously made. on a transfer paper through preparatory techniques known.

The printed paper is then attached to the material textile covered under pressure and hot. The temperature is generally of the order of 100 ° C and the pressure is 1 bar.

The reason (s) to be printed they are put in contact with the coating layer and the paper is Remove after cooling of the set.

Printing can also be done by helio recording

In this case, the coated textile material is print by passing between two metal rollers that carry the o the motif (s) engraved in hollow and inked (s).

The resulting coated and printed textile material One or the other of these operations is vulcanized later. According to cases, this vulcanization stage can be performed hot, of continuous or discontinuous mode, eventually under pressure.

The final coated and printed textile material it can then be protected by a varnish, especially of type acrylic. Depending on the desired effect, the protective varnish can be colorless or colored but translucent to allow the appearance of the printed motive (s). It may be in particular a varnish with properties against food stains.

The textile material coated and printed according to the invention especially presents great flexibility as well as a good resistance to aging, weathering and U.V.

It cleans easily and prints applied have a good adhesion to the textile support and a good resistance over time, especially during weathering and subsequent washing.

On the other hand it has a good resistance to heat and thus supports contact with hot dishes, for example.

In addition, the appearance of touch is not observed sticky during use.

Coated textile material printed according with the invention it has good waterproof characteristics against liquids.

The invention also relates to articles that consist of a coated and printed textile material as defined above and applies more particularly to the manufacture of tablecloths coated and printed or other Items intended for the dining table.

The invention will now be illustrated with help of an example that should not be considered as limiting.

Example

The different phases of production of a tablecloth Coated and printed table were the following:

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

2) Calendering on the support of a film of 180 g / m2 elastomer - calendering temperature 100 ° C

Coating composition used:

- Epichlorohydrin 100 parts in weight - Ethylene vinyl acetate (EVE) twenty  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Zinc Oxide 10 parts in weight - Magnesia 10  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Acid stearic 5  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Silica twenty  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Clay twenty  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Dioctyl Phthalate (PDO) eleven  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Oxide of titanium 35  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Anti UV 2  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Agents of vulcanization 5.7  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm ''  \ begin {minipage} [t] {85mm} Dusting the Coating with the help of calcium stearate. \ end {minipage}

3) Print

Use of a transfer paper printed.

Folded at 100 ° C and under pressure from the paper transfer with calendered tissue.

The print is in contact with the elastomer

4) Varnishing

Varnishing by helio-recording with the help of a varnish based on acrylic resins Modified-polyurethane to give the item anti-stain

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

Drying at approximately 80 ° C.

5) Vulcanization

Vulcanization in continuous mode in a tunnel.

Speed 5 meters per minute

Tunnel temperature 180ºC

Claims (12)

1. Textile coated with printed motifs, characterized in that it consists of a textile sublayer that forms a support associated with a coating layer based on vulcanized epichlorohydrin elastomer, said coating layer having one or more printed motif (s) on its surface not attached to the textile sublayer. 2. Textile coated with printed patterns according to claim 1, characterized in that the textile sublayer contains 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 on the printed coating layer, preferably a protective varnish with anti-stain properties. 4. Procedure for the preparation of a textile material coated with printed patterns according to any one of claims 1 to 3, characterized in that: - a textile material is formed that forms support, - it is deposited on said textile material support an epichlorohydrin-based coating layer, - print the motive (s) or desired decoration (s), - the resulting set is vulcanized, and - eventually a varnish of protection. Method according to claim 4, characterized in that the textile material that forms a support contains or consists of a fabric, a non-woven material or a mesh, preferably a fabric or a non-woven material. Method according to claim 4 or 5, characterized in that the composition of the coating layer is as follows: - Epichlorohydrin 100 parts in weight - Copolymer of ethylene vinyl acetate 5 a 30  \ hskip0.3cm '' \ hskip0.3cm ''  \ hskip0.3cm '' - Loads 30 to 80  \ hskip0.3cm '' \ hskip0.3cm ''  \ hskip0.3cm '' - Plasticizers 5 to 15  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Stabilizers U.V. And heat 1 a 3  \ hskip0.3cm '' \ hskip0.3cm ''  \ hskip0.3cm '' - Agent of vulcanization 1 to 6  \ hskip0.3cm ''  \ hskip0.3cm '' \ hskip0.3cm '' - Dyes 10 a 40  \ hskip0.3cm '' \ hskip0.3cm ''  \ hskip0.3cm '' Method according to any one of claims 4 to 6, characterized in that the coating layer is applied by calendering on the textile support. 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 done by heliogravure. 10. Method according to claim 8 or 9, characterized in that the printing is carried out with the help of acrylic and / or polyurethane optionally modified inks. 11. Items containing a textile material coated with printed motifs according to any one of the claims 1 to 10. 12. Articles according to claim 11, characterized in that they consist of tablecloths.