KR840005760A - Method of using polyethylene powder for sharing smooth materials and especially lining - Google Patents

Abstract

Coating, esp. by printing with a powder or paste, is carried out with polyethylene powder (I) having a different polymer (II) adhering to the surface of the particles. Pref. (I) is LDPE powder. (II) is a polyamide, polyurethane, polyester, polyacrylate, polyvinyl halide, polyvinyl acetate, polyether and/or polyalcohol. A plasticiser (bisphenol A) may be added. The amt. of (II) is 0.5-25 (1-10) wt.% w.r.t. (I). (II) is applied as a soln. or dispersion and dried. A double dot coating may be used, the coated (I) providing a barrier layer preventing the top layer flowing into the interfacing. This barrier layer consists of (I) contg. 0.5-10% (II), whilst the top coat consists of a hot melt adhesive powder of copolyamide (m.pt. 80-130 deg.C) or copolyester (m.pt. 115-140 deg.C). (I) has a particle size distribution of 0-200 (9-80) microns. The breaking load of the (II)-coated (I) at room temp. is (min. 25, pref. min. 50%) lower than that of uncoated (I). The technique is esp. useful for coating woven, knitted and nonwoven textile, real and artificial leather and foams. The surface properties of (II)-coated (I) are about the same as those of (II) powder, allowing (I) to be applied in the same way as other more costly hot melt adhesive powders, e.g. (co)polyamides and (co)polyesters.

Description

Method of using polyethylene powder for sharing smooth material and especially lining and polyethylene powder sharing heterogeneous polymer

As this is a public information case, the full text was not included.

Claims (21)

The use of polyethylene powder for application for lining on the smoothing material and in particular on the top of the cloth has a portion of the heterogeneous polymer which the polyethylene powder particles adhere to the surface thereof, when the application thereof is carried out according to the powder printing or paste printing method. Characterized in that the method. The method of claim 1 wherein the polyethylene powder is low pressure polyethylene. The method of claim 1 wherein the heteropolymer is polyamide, polyurethane, polyvinylacetate, polyester, polyacrylate, polyvinylhalogenide, polyether, polyalcohol or mixtures thereof. The method of claim 1 wherein a softener is used. 5. The method of claim 4 wherein the softener is bisphenol A. 2. The process of claim 1 wherein the covalent polymer heterogeneity is 0.5-25% by weight based on the weight of polyethylene. 7. The method of claim 6, wherein the sharing of the heterogeneous polymer is 1-10% by weight based on the weight of polyethylene. The method of claim 1, wherein the heterogeneous polymer is applied as a suspension to a solution or polyethylene powder and then dried. The method according to claim 1, wherein the application of polyethylene using a dissimilar resin forms a layer of double application in part or in whole. 10. The method of claim 9, wherein the layer forms a blocking layer and / or a bottom layer of double application, preventing the flow of the upper layer in the lining. A method according to claim 9 or 10, characterized in that the bottom layer placed directly on the lining consists of or comprises polyethylene which shares 0.5-10% by weight of the dissimilar resin based on the polyethylene weight of the bottom layer. 10. The method of claim 9, wherein the top layer is copolyamide or copolyester and the bottom layer is polyethylene, which shares 0.5-10% by weight of the heterologous resin based on the weight of the polyethylene in the bottom layer. 10. The method of claim 9, wherein the heterogeneous polymer is applied to the particles of polyethylene, such that the strain at break of the compaction cylinder of the polyethylene powder is reduced at room temperature. The method of claim 13, wherein the fracture strain of the compression cylinder of the reacted polyethylene powder of the dissimilar polymer is reduced by at least 25% at room temperature, based on an initial value without the addition of the dissimilar polymer. The method of claim 13, wherein the strain at break is reduced by at least 50% at room temperature. The fracture strain of the compression cylinder of the polyethylene powder, respectively measured at room temperature, is controlled by a dissimilar resin additive, so as to approximate the range of copolyamide powder or copolyester powder conventionally used in double coating linings. Characterized in that. 17. The method according to claim 16, wherein the copolyamide is a hot melt adhesive powder having a melting point range of 80 to 130 ° C and the copolyester is a hot melt adhesive powder having a melting point range of 115 to 140 ° C. The method of claim 13, wherein the strain at breakage of the polyethylene reacted with the dissimilar resin is controlled to substantially match the value of the commercial copolyamide or copolyester powder at room temperature, the temperature being as in such copolyamide or copolyester powder. Method of increasing greatly with increase. The polyethylene powder reacted with the dissimilar resin and reacted with a copolyamide powder having a melting point range of 80 to 130 ° C. is powdered at a typesetting roller temperature range of 35 to 60 ° C. and a hot roller temperature range of 200 to 270 ° C. A method characterized by the fact that it is applied to the film double coating by a conventional method using a printing method. A polyethylene powder for lining application for the top surface of a fabric, wherein 0.5-10% by weight of the dissimilar polymer is based on the weight of the polyethylene powder, and which can be used for surface adhesion and according to the powder printing and paste printing process, in particular according to the double coating method. 21. The polyethylene powder of claim 20 having a particle size distribution of 0 to 200 microns, preferably 0 to 80 microns. ※ Note: The disclosure is based on the initial application.