CS240452B1 - A method for producing a pile surface with a pile surface - Google Patents

Abstract

Method for producing a light-weight sheet formation with a pile surface based on chlorine-containing vinyl homopolymers and/or copolymers by flocculation and gelation. The essence of the invention lies in the fact that a layer of chlorine-containing vinyl polymer paste, into which fibrous particles are introduced, is applied to a layer of chlorine-containing vinyl polymer paste, which is in the form of foam and/or with a content of 0.5 to 7% by weight of blowing agent, with a gas release temperature in the range of 70 to 220 °C, pre-gelatinized on a separation pad and subsequently the entire formation is gelatinized with possible lightening of the lower layer of the formation and separated from the separation pad.

Description

240432

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for the manufacture of a fabricated sheet having a hairy surface, comprising vinyl homogens and / or copolymers by gelation, puffing and fixation of the hair layer in a single process.

It is known that the formation of a hair surface on the expanded polymeric materials by flocking is carried out by applying an adhesive layer to the softened shape produced in a separate process in which the fibrous particles are introduced (PATUSA 4 303 706, PAT NSR 2 944 063, Franc.PAT 2 207 212, Franc PAT 2 468 682, CSSRPAT 155 435).

According to PAT U.S. Pat. No. 4,362,774, a foamed fabric is produced by applying a foam layer to a movable web of fabric to which it will apply the flakes with subsequent drying and calendering. German Patent PAT 3 024 054 discloses a modacrylics hairy surface with a foamed 1,2-polybutadiene base, wherein hair fixation is achieved by applying high-frequency energy and simultaneously forming a patterned surface.

A disadvantage of processes which use a blank produced in a separate process as a substrate for flocking is the use, in particular, of solvent adhesive systems which, in addition to environmental and safety problems, also cause technological problems, especially when applying an adhesive layer to a lightweight structure. the hill reaches the even surface of the hair layer.

In the case of direct flocculation into non-foam, a sufficient anchorage of the hair layer is not achieved.

These and other disadvantages are solved by the present invention, wherein the process for producing a packaged, hairy surface-coated chlorine-containing vinyl-copolymer / copolymer by flocculation and gelation is such that apply a paste of a chlorinating vinyl polymer in the form of a foam and / or a content of 0.5 to 7% by weight. a blowing agent having a gas discharge temperature of 70 ° C to 220 ° C and after it has been pre-coated with any partial or total exposure of the blowing agent, followed by a coating of the chlorine-containing vinyl polymer paste into which the fibrous particles are introduced and the gelatin formation formed at the same time 1 to 30 minutes and then separated from the release liner. An advantage of the present invention is its ease of technological feasibility, providing a solid anchoring of the fibrous particles and the ecological and economic advantages over the method used.

The chosen two-layer basic coarse layer method permits wide variations in thickness, at the stage of lowering the lower polymer layer, thereby achieving the variability of the properties of the entire structure and the possibilities of its use.

Since the finished product is solved by a textured or other intermediate layer on a pure synthetic base, it can be used in wet spaces.

As a release liner, a silicone emulsion-coated paper substrate may be used as a release agent, a steel endless belt, and the like.

The term chlorine-containing polyvinyl polymer paste is understood to mean a viscous suspension consisting of homopolymers and / or co-polymers, especially vinyl chloride, plasticizers, fillers, stabilizers and viscosity regulators.

As blowing agents, thermolabillin compounds from the group of azo compounds, hydrazine derivatives and N-nitroso compound specific for 1.5-methano-3,7-dinitroso-1,3,5,7-tetraaza-cyclooctane, azo diisobutyronitrile may be used. , N, N'-dimethyl-N, N: dinitrosoterephthalamide, 1.3.5-trinitroso-1,3,5-triazacyclohexane, benzenesulfohydrazide, p-toluenesulfohydrazide, p, p'-oxy-bis (benzenesulfohydrazide), dinitro-tetrahydroimidazo - (4,5-d) -imidazole-2,5- (1H, 3H) -diones and azodicarbonate. All known fibers of natural and synthetic polymers, as well as inorganic fibers, especially polyamide, viscose, etc., may be used to prepare short fiber particles. The particle size of the applied particles ranges from 0.1 to 15 mm and the fineness from 0.05 to 0.5 mm. 80 dtex, only a different dimension is needed.

The fibrous particles can be applied by conventional methods such as, for example, mechanically, pneumatically, electrostatically, or in combination.

By gelation is meant the conversion of the polymer and the plasticizer into a homogeneous state by the action of heat.

The method of the invention is described, but limited by the following examples. Example 1 A first composition consisting of 100 kg of polyvinylchloride emulsion having a K value of 70.77 kg of dioctylphthalate, 28 kg of micronised limestone, 2 kg of di-butyltin maleate, 4.4 kg of azodicarbone and 2.2 kg of lead stearate are prepared. . The paste is agitated for 24 hours and vented under vacuum. A second composition consisting of 100 kg of vinyl chloride emulsion pole with a K value of 70.60 kg of dioctyl phthalate and 2 kg of dibutyltin maleate is prepared. Do not walk paste for 24 hours and vent under vacuum.

The first prepared composition is applied in

Claims (7)

240452 5 2 mm thick on a release paper with a silicone emulsion coating coated with a tread pattern, pregelatinized at 135 ° C for 2 minutes. A second composition of 0.25 thickness is applied to the pregelatinized layer. mm, into which fibrous particles based on polyamide 6 having a fineness of 17 dtex and a length of 2.2 mm in a DC electric field of 5 kV.cm1 are introduced. The flocked form is laminated and heated at 185 ° C for 5 minutes. After cooling and purification from the excess flakes, the formed surface formation is separated from the release liner. The lightweight sheet formed has a total thickness of 5 millimeters and serves as a floor covering for wet areas. Example 2 Procedure as in Example 1, except that 4 kg of the 1,5-methano-3,7-di-nitroso-1,3,5-methano-3,7-di-nitroso-1 mixture was added instead of 4,4 kg of azodicarbonate. Of 7-tetraazacyclooctane with azo-dicarbonamide in a 1: 1 ratio 3 Procedure as in Example 1, except that instead of 4.4 kg of azodicarbonamide, 2.5 kg of azo diisobutyronitrile are added and 1.25 kg of this compound is added in place of 2.2 kg of lead stearate. Example 4 Procedure as in Example 1, except that 4 kg of benzenesulfohydrazide are added instead of 4,4 kg of azodicarbone. Example 1 and d 5 The procedure as in Example 1, with the difference that polyester flakes of the size of 22dtex and a length of 2.5mm are used as short fibrous particles. Example 1 and d 6 A first composition consisting of 100 kg of vinyl chloride / vinyl acetate copolymer in a ratio of 95: 5, 80 kg of dioctyl phthalate, 2 kg of dibutyltin maleate, 2 kg of silicon surfactant and 30 kg of micronised limestone is prepared. The paste is not aged for 24 hours and vacuum vented. A second composition of 100 kg of emulsion polyvinyl chloride with a K value of 70, 60 kg of dioctyl phthalate and 2 kg of dibutyltin maleate is prepared. The paste is left to vacuum for 24 hours. The first composition is mechanically filled with air on a continuous foam generator to a density of 400 gm-3 and applied 5 mm thick to a separating paper with a silicone emulsion coating, pre-gelatinized at 140 ° C for 4 minutes. A second 0.35 mm thick composition is applied to the pregelatinized foam layer to incorporate 22dtex and 3 mm polyamide 6 based fiber particles in a 5 kV DC electric field. cm-1. The flocked formation is gelatinized at 180 degrees Celsius for 8 minutes. After cooling and purification of the excess flake, the formed sheet is separated from the separator pad. The formed flat sheet has a total thickness of 7 mm and serves as a floor covering for wet areas. Example 1 and d 7 Procedure as in Example 6 except that 0.5 kg of azodicarbonate and 0.25 kg of lead stearate are added to the first composition. The formed surface has a total depth of 8 mm and serves as a floor covering for damp and cold spaces. BEFORE MET A method for producing a 1-pound surface with a hair surface based on chlorine containing vinyl homopolymers and / or co-polymers by flocculation and gelation, characterized in that a chlorine-containing polymer paste is applied to the separating substrate in the form of a foam and / or a content of 0.5 to 7% by weight. with a gas release temperature in the range of 70 to 220 ° C and after its pregelatinization with the possible partial or total exposure of the blower, the subsequent coating with a further layer of chlorine-containing vinyl polymer paste into which the fibrous particles are introduced and formed the formation is gelatinized and at the same time simultaneously heated at 150 ° C to 200 ° C for 1 to 30 minutes and subsequently separated from the release liner.