黄牛鞋面革湿态染整清洁生产工艺研究与实践

For improving the leather engineering clean production level and reducing pollution of wet process after tanning, new cleaner production techniques were designed including chromium-free retanning, twice and more shaving, dyeing at the end, and color fixing without chrome. The research results show that the retanning with free-chrome compound metal tanning agents, vegetable tanning agent and synthetic tanning agent, the leather sensory performance is good, the shrinkage temperature over 90 ℃, and the physical and mechanical properties are in line with the industry standard; twice and more shaving can increase the leather area yield, reduce loose surface rate and reduce the consumption of the chemical materials; dyeing at the end and color fixing without chrome, can reduce the dosage of dye, reduce the pollution of wastewater containing chromium or dye; which can improve product quality, reduce production cost and reduce environmental pollution.