Integrated waterproof leather preparation method

Abstract

The invention discloses an integrated waterproof leather preparation method which is characterized by comprising the following steps: (1) rapid bovine hide washing; placing a wet-salted bovine hide in a bath lotion in an overload drum, and discontinuously operating; (2) merging three processes, i.e., main immersion, hair removal and liming in one bath; (3) splitting a limed hide, and then, washing, wherein covered washing is adopted in the washing process; (4) merging two processes, i.e., deliming and softening in one bath; (5) merging two processes, i.e., pickling and tanning in one bath; (6) merging two processes, i.e., retanning and neutralizing in one bath; (7) merging three processes, i.e., filling, dyeing and stuffing in one bath; and (8) washing, wherein covered washing is adopted. After the integrated waterproof leather preparation method is carried out, the total water saving and emission reduction effects are as follows: the water consumption for production is reduced by 40-50%, the emission reduction of COD (Chemical Oxygen Demand) is 30%, the emission reduction of chromium is 90%, and the emission reduction of alkalinity is 60%. The clean characteristic and environment friendliness of the method are further improved.

Description

technical field [0001] The invention relates to an integrated water-saving leather-making method, belongs to the technical field of clean leather manufacturing, and is an applied technology in leather production and processing. Background technique [0002] The tanning industry is an industry in which the by-products of animal husbandry are used as raw materials for deep processing. Various animal hides are processed by physical and chemical methods such as depilation and tanning, and then processed by painting and finishing processes to produce products with The production and processing process of various leather products with properties such as softness, plumpness and breathability. [0003] The process of tanning preparation, tanning and after-wet finishing is a production process with water as the medium. Through physical, chemical and mechanical processing, various finished leathers with different styles and product quality requirements are finally produced. The tradi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a clean, integrated water-saving technical method for tannery, through The application of integrated water-saving technology in the whole process of tannery production, as well as the adjustment and balance of corresponding process technology, realize the integrated water-saving technology and method of the whole process of tannery production, and effectively reduce the water consumption and wastewater discharge in tannery production , while reducing the discharge of various pollutants in wastewater and improving the product quality of finished leather

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