Preparation method of sofa leather

Abstract

The invention discloses a preparation method of sofa leather. The method comprises the steps of presoaking, main dipping, ash alkalinity soaking, deashing, tanning and fat liquoring. In order to improve permeability of chemical materials on leather in the later period, presoaking and main dipping are carried out; interfibrillar substance is sufficiently removed through ash alkalinity soaking, collagenous fiber is sufficiently loosened, certain fiber space and transmissibility are formed, and therefore follow-up work procedures can achieve permeation better; chrome-free tanning is carried out;and fat liquoring is carried out in multiple layers step by step. The process is simple and environmentally friendly, and the finally-prepared automobile seat mat leather is resistant to atomization,organic solvent, combustion, wear and folding, and free of discoloration after long-time solarization.

Description

technical field [0001] The invention relates to a method for manufacturing leather, in particular to a method for preparing leather used on sofas. Background technique [0002] The design of modern furniture must not only conform to the living environment of people, but also meet the needs of life; while bringing convenience to modern people, it must also reflect visual beauty and tactile comfort. In addition to being practical as the most basic premise, furniture must also have a high degree of harmony of material beauty, craftsmanship beauty and artistic beauty. Therefore, the beauty of materials that are practical and meet the functional requirements is particularly important. Cloth and leather are the traditional materials of upholstered furniture, just like human clothing, protecting the inner body of the furniture and decorating the furniture at the same time. [0003] As a member of upholstered furniture, the leather sofa fabric sofa is deeply loved by people for it...

AI Technical Summary

Problems solved by technology

Since the leather is taken from animals, there are natural defects of uneven leather

For example, the cortex on the back is smooth and firm, and the cortex on the abdomen is soft and wrinkled. At the same time, due to the difference in climate and pasture environment, some thick skins have defects such as wounds, which will affect the yield rate or the quality of the finished sofa.