Integrated waterproof leather preparation method

A tanning and process technology, which is applied in the field of clean leather manufacturing, can solve the problems of large fresh water consumption and achieve the effects of increased automation, water consumption control, precise addition of various chemicals, and improved cleaning and environmental protection characteristics

Active Publication Date: 2014-05-07
徐州南海皮厂有限公司
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  • Abstract
  • Description
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  • Application Information

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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, realiz

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Embodiment Construction

[0022] The present invention discloses an integrated water-saving tanning method, which is an improvement to the existing production method. For the specific process flow, see figure 2 .

[0023] Main technological process of the present invention is described as follows ( figure 2 Some of the conventional procedures will not be described in detail):

[0024] 1) Quick skin washing:

[0025] It is carried out in an overloaded drum, and the rotating speed of the drum is 2 to 4 rpm.

[0026] Take 100 parts of salt-wet cowhide, add 200 parts of fresh water, 0.05-0.2 parts of soaking aid A (LANXESS company, product name: CISMOLLAN SA-C, non-ionic polymer or non-ionic surfactant), 0.02-0.2 parts 0.2 parts of soaking enzyme (Derui TFL company, product name: PELLVIT C, composed of proteolytic enzyme and activator), 0.05-0.2 parts of fungicide (Shanghai Jiayi company, product name: 1140, organic sulfide). The temperature is 20-25°C. Rotate for 30 minutes, stop for 30 minutes, us...

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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...

Claims

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Application Information

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IPC IPC(8): C14C1/00C14C1/04C14C1/06C14C1/08C14C3/00C14C3/28C14C9/00C14C9/02C14C11/00
Inventor 孙军高忠柏谢衡杜昌路王治胜王震毅灯国明
Owner 徐州南海皮厂有限公司
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