Finishing method for improving washing resistance and cold and flexing resistance of leather coatings

Abstract

The invention relates to the technical field of leather finishing, and provides a finishing method for improving the washing resistance and cold and flexing resistance of leather coatings. The methodcomprises the following steps of crust leather pretreatment finishing, primer coating, ironing, oscillation staking, embossing, standing, milling, toggling, middle coating, ironing, top coating, ironing, standing, milling, oscillation staking and ironing; a finishing agent main body material in the crust leather pretreatment finishing process is aromatic polyurethane copolymer; a finishing agent main body material of primer coating is polyurethane copolymer containing an active group and polyacrylate copolymer, and a finishing agent main body material of middle coating is the same as the finishing agent main body material of primer coating; a finishing agent main body material of top coating is polyurethane copolymer. According to the specific requirements of the washing resistance and cold and flexing resistance of the leather coatings, finishing materials are selected, the finishing process is reasonably matched and designed, and the disadvantages that the washing resistance and coldand flexing resistance of the leather coatings are poor are effectively solved.

Description

technical field [0001] The invention relates to the technical field of leather finishing, in particular to a finishing method for improving the washing resistance, cold resistance and bending resistance of a leather coating. Background technique [0002] The leather finishing process system includes the coating components of primer, middle coat and top coat and their finishing operation methods, such as spraying, brushing, etc., by forming a protective film on the surface of the crust leather, improving the appearance and expanding the scope of use. Improve use value. With the improvement of consumption level and the change of consumption concept, consumers' requirements for leather and its products (leather shoes, leather bags, etc.) are not limited to wearing comfort and beauty, but high physical properties and functional leather and its products are increasingly popular in consumers. Among them, the coating is washable, cold-resistant and twist-resistant, which is one of...

AI Technical Summary

Problems solved by technology

[0004] Therefore, for above-mentioned problem, the present invention proposes a kind of finishing method that improves leather coating water-resistance, cold-resistant tortuosity, the present invention selects finishing material according to the specific requirement of leather coating water-resistant, cold-resistant tortuosity, rational collocation design finishing process, Effectively solve the disadvantages of poor washing resistance and poor cold resistance of leather coating