Production method for non-chrome-tanned ecological automobile seat cushion leather

Abstract

The invention relates to a production method for non-chrome-tanned ecological automobile seat cushion leather, which comprises that an animal raw skin is produced into automobile seat cushion leather through dehairing, tanning, re-tanning and greasing, coating and trimming. The tanning comprises the following steps that salt is added in bath liquid to regulate baume degree to 8-8.5, 2-4 percent of glutaraldehyde is added in a rotary drum which rotates for 3-5 hours for full penetrating reaction, 5-10 percent of tannin tanning agent is added for combined tanning, sodium bicarbonate is used during tanning to control pH to be 4.0-4.2, the rotary drum rotates again to react for 4-6 hours, temperature is adjusted to be 30-32 DEG C and the rotary drum rotates again for 2-3 hours. The percent refers to the percent of raw materials accounting for the weight of the skin. Since the use of traditional leather chemical materials such as chrome tanning, heavy metal tanning agent, banned dyestuff and the like is avoided in the invention, the hand feeling and the relevant physical and mechanical performance of the leather are improved.

Description

technical field [0001] The invention relates to a production method of chrome-free tanned ecological automobile seat cushion leather. Background technique [0002] The seat cushion leather currently used for the secondary decoration of automobiles is mainly cowhide sofa leather, and its implementation standard is the national furniture leather standard (GB / T16799). There are few technical requirements and low indicators, and it cannot be compared with automobile seat cushions at all. Compared with leather. The real car seat leather is far superior to other leather products in terms of mechanical properties, safety performance, hygienic environmental protection performance and ornamental performance due to the particularity of the use environment, and has strict requirements in appearance and physical and chemical indicators. requirements. In recent years, the awareness of environmental protection in various countries has been continuously improved. While the use performanc...

AI Technical Summary

Problems solved by technology

[0005] At present, Yunnan Ruibiao, Heilongjiang Mishan, and Wenzhou Pengchang are also developing chrome-free tanned car upholstery leather. There are technical problems in the field, and all indicators conform to my country's genuine leather mark ecological leather product specification and German Volkswagen's leather material requirements specification TL52064. No domestic enterprise has developed and produced chrome-free tanned ecological car seat leather.