CS212622B1 - Flexible flat material with dull metal lustre - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a flexible matt metallic luster composed of a textile fabric and a polymer coating.

At present, several types of metallic effect materials are described and known which are used in the shoe, leather and garment industry for their attractive appearance. In addition to the fashionable appearance, they usually have good abrasion and bending resistance.

A material is known in which the metal effect is obtained by means of dispersed metal particles of 10 to 150 µm in an amount of 2 to 50% by weight by weight of the thermoplastic resin. The metal particles are introduced into both the adhesive and the cover layer. The base material is fabric, plastic film or paper. This material is characterized by stiffness and thickness suitable only for footwear applications.

Another pearl luster material consists of a fibrous layer on which a polyurethane elastomer is applied and vulcanizes, another layer which is formed by applying a polyurethane solution and pigments or a dye and a third layer containing a pearl pigment. The disadvantage of this material is its considerable stiffness, which is due to the direct deposition on the fibrous layer and the complexity of manufacturing the material.

Further, a porous layered sheet material with a smooth glossy surface is known which is produced by the stepwise deposition of polymer layers. The first layer contains up to 500% pigments by weight, the second layer contains up to 500% nacre and the third layer is transparent. This material has an enamel type of gloss, its disadvantage is less flexibility and drastiness «high consumption of pigment and nacre. It is suitable exclusively for shoe applications.

The most recent materials include a flexible, highly drape and soft-faced layered metal with a metallic face effect consisting of a backing textile layer of 50 to 400 g / m 2, a polyurethane adhesive and a layer of 5 to 50 g / m 2. and a cover layer having a basis weight of 10 to 50 g / m @ 2 on a polyurethane base having a modulus of 5 to 15 MPa at 100% elongation, containing 2 to 50% pearlescent pigment and 2 to 25% coloring agents based on polyurethane dry weight. Softness and flowing in this material is achieved indirectly by applying layers to a release liner followed by lamination and a matt appearance is achieved by using a matte release liner. Despite its very good utility and appearance, this material has some drawbacks, in particular a relatively complicated three-layer construction. Another disadvantage is the sophisticated technology resulting from the handling and removal of very thin layers on the release liner.

The above-mentioned drawbacks are substantially eliminated by the material according to the invention, which is based on the fact that its textile fabric has a basis weight of 40 to 350 g / m @ 2 and has a 120 to 700 / / 100 to 600 yarn per 10 cm. 01 to 50% by weight of a pearlescent pigment to 3% of the weight of the cloth partly reveals the fibers of the textile layer. In this construction of a textile material (high density without stitches and gaps), the polymer applied in a small amount does not cover the face side all over, does not strengthen the fabric binding points and does not increase the stiffness of the obtained material. In this case, the partially exposed fibers of the textile in combination with the pearlescent pigment create a matt metallic appearance of the facing surface.

It is preferred to use a fabric based on polyamide or polyester as the backing fabric, but it is also possible to use a fabric based on viscosity or cotton. When a synthetic fiber fabric is used, the produced material will obtain a metallic effect with minimal addition of mother-of-pearl to the polymer. If natural, regenerated fiber or a combination of synthetic fibers is used, it is necessary to add the pearl to the non-deposited polymer in a larger amount. However, the addition of mother-of-pearl has a positive effect on enhancing the metallic effect.

The material according to the invention is intended for clothing and haberdashery applications and therefore has a number of advantages similar to the materials produced so far. It is possible to obtain a material with an extremely low basis weight (about 50 g / m @ 2), which is hardly possible with laminated materials. Furthermore, the material according to the invention is silent over the entire homogeneous polymer layer and is thus breathable. Another important advantage of the material is its durability and minimal possibility of destruction or damage. Laminated materials are considerably more delicate, eg for damage to the cover layers, separation layers, etc.

The sheet materials having a homogeneous layer of polymer have certain requirements for the properties of these polymers, which are mainly specified by the module (eg 100% elongation). This property significantly affects the rigidity and resistance of the layer. In the case of the material according to the invention, the polymer requirements need not be so narrowly specified, since the polymer layer is not homogeneous and thus does not show stiffness and the resistance is largely influenced by the fabric-polyaer interaction. Nevertheless, it seems to be most advantageous to use a polyurethane base polymer having a modulus of 2 to 20 MPa at 100 sec elongation.

The amount of pearlescent pigment that is added to the polymer depends on the fiber composition of the fabric used, the color of the underlying fabric, and the opacity of the other color additives in the polymer. Synthetic fibers, darker fabric and opaque color additives are sufficient for a low pearlescent pigment content. Conversely, natural fibers, light fabric and low opaque color additives require a higher addition of mother-of-pearl to achieve a metallic luster. It has been shown that the amount of pearlescent pigment can be in the range of 1 to 30% by weight based on the polyurethane dry weight.

The materials according to the invention can be produced by direct application of the polymer mixture to the textile layer. This greatly simplifies the technology against the reverse method.

For the sake of clarity of the invention, the following examples are given by weight and percentages are by weight unless otherwise indicated.

Example 1

Solutions containing:

1. 30 * polyurethane resin parts 2. 10 * polyurethane solution parts prepolymer 100 ALIGN! předolyaeru 100 ALIGN! a targeting agent 5 a strengthening agent 2 catalyst 5 catalyst 2 50 * pigment paste 2 pearl pigment 2

The β solution was first applied to the fabric. 1 in an amount of 30 g / m ² and dried at 70 to 150 degrees Celsius, then a solution of S. 2 in an amount of 70 g / m ² and dried at 70 to 150 ° C.

The fabric used was composed of 50% polyamide, 32.5 polyester and 17.5% babin at 386/284 per 10 cm, basis weight 80 g / m ² .

The obtained lining material usable in the clothing, haberdashery and footwear industries had a thickness of 0.2 mm, a basis weight of 100 g / m ² , a stiffness of 4 to 6 aNca.

Example 2

As in Example 1, a Rostok composition was prepared:

parts

25 * polyacrylate-based solution 50 25 * aliphatic polyurethane solution 50 50 * pigment paste 3 pearl pigment 3 silicone oil 2

Rostok was applied in an amount of 60 g / a ² on a polyamide fabric of the composition:

receives 500/450 weave linen surface weight 46 g / a ²

After hardening at 60 to 130 ° C the material was cooled on cooling rollers and reached the following parameters:

thickness 0.1 mm basis weight 66.0 g / m ² stiffness 2 to 4 mNcm

The material is suitable for clothing applications.

Example 3

A solution of the following composition was prepared as in Example 1:

parts

100% solution of thermoplastic polyurethane

50% pigment paste 5 beads? 20 o

This solution was applied at a rate of 120 g / m 2 to the fabric:

100% wolf-clover composition gets 360/230 carp carp

basis weight 120 g / m

The fabric was pre-treated with a hydrophobic treatment. After deposition, the material is dried at 100 to 150 ° C and cooled. Manufactured material with effective cheek surface is especially suitable for clothing and haberdashery applications.

Example 4

A mixture of the following composition was prepared on a high-speed mixer:

parts

40% aqueous polyurethane dispersion 100 acrylate type 2 thickener pigment pearl pigment

The mixture was applied to a fabric of the following composition:

cotton receives weave basis weight

The coating is dried at 120 to 160 ° C. Material

100%

300/200 keprová

300 g / m ² (fabric covered with hydrophobic coating before application) is suitable for haberdashery and shoemaking applications5

2.2622

Example 5

The mixer was prepared with the following composition:

parts

60% dispersion of polyacrylate 66 urea-formaldehyde condensate 5 pearl pigment 15 pigment premix 2 thickener acrylate type 0.5 water 33 conc. ammonia to pH 8-9

Deer was applied to polyester linen woven fabric with a basis weight of 00 g / m ² and additionally 360/280 threads per .0 cm · Surface weight of the coating 30 g / m ² . The deposited material was dried at a temperature of 100 ° C to 150 ° C.

The product obtained has a thickness of 0.2 mm and a basis weight of 115 g / m ² and a stiffness of 3 to 5 mN / cm and is particularly suitable for clothing and haberdashery applications.

Claims (4)

1. A flexible matt metallic shiny material consisting of a textile fabric preferably of synthetic fibers and a coating of polyurethane, polyacrylate or a mixture thereof with a pigment content, characterized in that its textile fabric has a basis weight of 40 to 350 g / m ² and an up to 700/100 to 600 threads per .0 cm and that its polymeric coating containing 0.01 to 50% by weight pearlescent pigment on dry weight covers 5 to 100% of the fiber surface area of the textile layer, while the weave of the fabric remains visible. 2. A flexible sheet material as claimed in claim 1, characterized in that its polymeric coating is based on polyurethane with a content of 0.01 to 20% by weight of pigment, calculated on the dry matter, in an amount of 5 to 30 g / m ^{2 of} material. 3. A flexible sheet material according to claim 1 of polyamide, polyester or composite fiber textile, characterized in that the textile used has a basis weight of 40 to 180 g / m < ^{2 >} and a 360 to 600/230 to 500 thread per 10 cm. 4. The flexible sheet material of claim 1 wherein said textile fabric is hydrophobically treated and said polymer blend comprises from about 0.1% to about 10% by weight of silica and from about 0.1% to about 5% by weight of silicone oil.