Manufacturing technology for flame-retardant, anti-yellowing and low-fogging cowhide car seat cushion leather

Abstract

The invention discloses a manufacturing technology for flame-retardant, anti-yellowing and low-fogging cowhide car seat cushion leather. The manufacturing technology comprises the production procedures that ammonium salt deliming is replaced by ammonium-salt-free deliming, the fogging value of the seat cushion leather is reduced through high-temperature washing, the flame-retardant property of the leather is improved through retanning, fat liquoring and coating step by step, and the light resistance of a coating is improved through a light-resistant material. According to the manufacturing technology, the usage quantity of leather chemicals is decreased by selecting roll coating to replace spray coating, a flame-retardant, low-fogging, light-resistant, heat-resistant, anti-yellowing and high-property car trim leather product is researched and developed, and a wide market prospect is achieved.

Description

technical field [0001] The invention relates to a manufacturing process of automobile seat cushion leather, in particular to a manufacturing process of flame-retardant, yellowing-resistant, and low-atomization cowhide automobile seat cushion leather. Background technique [0002] Leather seat cushions have been used in automobiles for about eighty years. Due to the low quality of life of the early people and the impact of vehicle interior decorations on personal safety and health, leather cushions are almost all made of ordinary leather. With the increasing awareness of health and environmental protection, people have gradually discovered the hazards of using ordinary leather for seat cushions: (1) The unbound low molecular matter in the leather fibers evaporates into mist after being heated, and condenses on the windshield , affecting the line of sight and increasing unsafe factors. (2) When the car encounters a fire, the seat cushion burns, making it difficult for people...

AI Technical Summary

Problems solved by technology

With the increasing awareness of health and environmental protection, people have gradually discovered the hazards of using ordinary leather for seat cushions: (1) The unbound low-molecular-weight substances in the leather fibers evaporate into mist after being heated, and condense on the windshield , affecting the line of sight and increasing unsafe factors

(2) When the car encounters a fire, the seat cushion burns, and it is difficult for the people in the car to escape

[0004] (1) The various performances of leather required for automobiles are greatly restricted by each other, and it is difficult to meet them at the same time. If some flame retardancy is improved, the softness of the hand is greatly reduced; Wet rub resistance index dropped greatly, etc.

[0005] (2) Flame retardants mostly use halogen-containing compounds. When the car is on fire, PBDD (polybrominated dibenzodioxin) and PBDF (polybrominated dibenzofuran) may be generated due to high temperature cracking, which is harmful to the environment. human body, prone to suffocation

[0007] (4) The hexavalent chromium salt remaining in the finished leather is a carcinogen and harmful to human health