Production method of shrunk grain leather

Abstract

The invention discloses a production method of shrunk grain leather. According to the production method disclosed by the invention, a whole skinned animal skin material is used as a raw material, water immersion is carried out, fleshing operation can be respectively carried out after each immersion, and unhairing and swelling can be carried out after second immersion and before the fleshing operation; hide fiber is opened as possible starting from blue skin, big neutralization is adopted during a retanning stage, moderate filling is carried out, the using amount of vegetable tannin is increased, the loose degree of the hide fiber is enlarged as far as possible by a wet toggling plate, crust is subjected to re-embossing, rewetting can be carried out after patterns are sized through millingby a drum, temperature-controlled and humidity-controlled milling can be carried out by using a temperature-controlled stainless steel drum, the humidity of the crust is controlled by utilizing an alternate cooling and heating method, and leather patterns are shrunk, so that uniform and consistent shrunk grain leather can be produced.

Description

technical field [0001] The invention relates to a method for preparing leather, in particular to a method for producing shrinkage leather used for leather bags and shoe upper leather raw materials. Background technique [0002] With the development of society, people have higher and higher requirements for the quality and aesthetics of daily necessities. Cowhide leather, as a high-grade raw material for luggage and clothing, has been widely used in the fields of sofas, car cushions and bags. As people's requirements for leather products are getting higher and higher, traditional leather products can no longer meet the requirements. the needs of the people. With the development of tanning technology at home and abroad, there are more and more types of leather in various styles. Among them, textured leather with better three-dimensional effect and hand feeling still has a good market prospect. [0003] At present, the main method of producing patterned leather is mechanical ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a production method of shrunk grain leather. The shrunk grain leather prepared by this method has a uniform pattern, full and convex, and a strong three-dimensional effect, which can be used to overcome the traditional physical embossing process. The pattern tends to be rigid on the prepared pattern leather, and the leather feels stiff.