PU/PVC synthetic leather and its manufacturing method

Abstract

The invention relates to the synthetic leather manufacturing field, especially to a wear-resistant and scratch-resistant PU/PVC (polyurethane/polyvinyl chloride) synthetic leather and its manufacturing method. The synthetic leather includes a base cloth layer, a polyurethane bonding layer, a polyvinyl chloride foaming layer, as well as a polyurethane fabric layer, and additionally includes a polyvinyl chloride layer, which is positioned between the polyvinyl chloride foaming layer and the polyurethane fabric layer. For the PU/PVC synthetic leather provided in the invention, under the circumstance of not changing the original physical circumstances of the PU/PVC synthetic leather, and by adding a polyvinyl chloride layer between the polyvinyl chloride foaming layer and the polyurethane fabric layer, the synthetic leather surface and the polyvinyl chloride foaming layer are separated. By making use of the scratch-resistant and wear-resistant characteristics of the polyvinyl chloride layer, the scratch resistance and wear resistance of the PU/PVC synthetic leather are greatly enhanced. Martindale wear resistant tests prove that the PU/PVC synthetic leather provided in the invention can resist wear up to over 100000 times.

Description

technical field [0001] The invention relates to the field of synthetic leather manufacturing, in particular to a wear-resistant and scratch-resistant PU / PVC synthetic leather and a manufacturing method thereof. Background technique [0002] refer to figure 1 Shown, existing PU / PVC synthetic leather comprises base cloth layer, polyurethane adhesive layer, polyvinyl chloride foam layer and polyurethane lining layer successively, and its manufacturing method refers to figure 2 As shown, it generally includes the following steps: 1. Material preparation: select base fabric and textured release paper, prepare polyurethane fabric slurry, polyvinyl chloride foam slurry and polyurethane laminating material, etc.; 2. Host production: ( a) Coating polyurethane fabric slurry on the surface of the textured release paper, and forming a polyurethane fabric layer after drying; (b) Coating polyvinyl chloride foaming slurry on the polyurethane fabric layer, forming polyvinyl chloride foam ...

AI Technical Summary

Problems solved by technology

The PU / PVC synthetic leather obtained through the above steps, because the polyvinyl chloride foam layer is full of honeycomb pores and the pore walls are thin, the surface layer PU is attached to the PVC foam layer full of honeycomb pores, and part of it is connected to the pore walls. , partially suspended, resulting in poor scratch resistance and wear resistance on the surface of PU / PVC synthetic leather (in the Martindale wear test, the number of tests can only reach 20,000 times), so that the product cannot be used in automotive interior leather. It can be used in fields requiring scratch resistance and wear resistance

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