A kind of water-based wet method prepares the method for genuine leather bag leather

Abstract

The invention provides a method for preparing genuine leather luggage leather by a water-based wet method. The method includes the steps of leather base material treatment, coating, coagulation, washing, drying, and dry veneering; the method cleverly solves the problem of water-based polyurethane foaming materials. It is difficult to adhere to the leather and the leather is easy to mold. At the same time, it solves the problem of easy cracking and bubbling when the traditional water-based wet process is used for coagulation. By spraying the coagulation liquid at intervals, the method of coagulation, washing, drying, and dry veneer transfer A water-based genuine luggage leather was obtained. Adding wear-resistant additives and water-based hydrophobic agents to the water-based surface layer slurry system improves the wear-resistant and waterproof properties of luggage leather. The water-based genuine leather luggage leather obtained by the method of the invention has the advantages of safety and environmental protection, soft hand feeling, excellent waterproof performance, not easy to mold and wear, and the like.

Description

technical field [0001] The invention belongs to the field of artificial leather production, and in particular relates to a method for preparing genuine leather luggage leather by an aqueous wet method. Background technique [0002] Synthetic leather is a plastic product that simulates the composition and structure of natural leather and can be used as its substitute material. Usually, the impregnated non-woven fabric is used as the mesh layer, and the microporous polyurethane layer is used as the grain layer. Both the front and back are very similar to leather, and have a certain degree of air permeability, which is closer to natural leather than ordinary artificial leather. Synthetic leather occupies a very important position in human's daily life and is widely used in the production of luggage, clothing, footwear and car interior accessories. [0003] In the existing synthetic leather manufacturing, the polyurethane resin is diluted and added with wood powder or other fi...

AI Technical Summary

Problems solved by technology

Although genuine leather has great advantages in breathability, softness and skin-friendly feeling, the world calls for building a harmonious society, protecting animals, and protecting the environment. However, the production process of genuine leather seriously pollutes the environment, and the content of heavy metals tends to exceed the standard.

Moreover, the finished product rate is low in the processing process, resulting in high cost, which is difficult to be accepted by middle and low-end consumers

At present, the materials for producing synthetic leather are mainly two kinds of polyurethane resin (PU) and elastic polyvinyl chloride (PVC) sol, both of which are petroleum products. will have adverse effects

Moreover, the water-based polyurethane foam material in the prior art is difficult to adhere to the leather, and there are problems of easy mold, cracking and bubbling with the leather, and the wear resistance and waterproof performance need to be further improved.