Method for producing low-odor clean vehicle interior decoration leather by using biological enzyme technology
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A technology for automotive interiors and production methods, applied in the fields of application, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., which can solve pollution and increase the difficulty of treatment, etc. problems, achieve a high degree of cleanliness, improve the working environment of employees, and minimize environmental impact
Active Publication Date: 2019-04-02
HAINING SENDE LEATHER +1
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Depilation and hair removal methods have caused serious pollution to the environment, especially sulfur pollution, which has increased the difficulty of treatment
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[0017] The production process of the present invention will be described in detail below:
[0018] The production process of the present invention includes the steps of meat removal, liming, deliming, softening and degreasing, pickling, tanning, retanning, dyeing, fatliquoring, drying, softening, primer coating, middle coating, embossing, top coating, etc. ,among them:
[0019] Said liming adopts the combined action of biological enzyme products, auxiliaries and basic chemical auxiliary materials in sequence to remove the surface, cattle hair and original oil and other items in the original hide. The specific steps of liming are: weigh the skin after soaking and scraping into the drum, add 1.5 parts of normal temperature water (if the skin is 100KG, add 150KG of water), control the temperature to 23-24℃, and add 0.15 parts of lipase BLE-F, then add 0.15 parts of dehairing enzyme X-Zyme UF, add 1.2 parts of liming auxiliary UAC to react for 60 minutes, add 0.5 part of lime, react f...
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Abstract
The invention relates to a method for producing low-odor clean vehicle interior decoration leather by using a biological enzyme technology, wherein the method comprises: meat removal, liming, deliming, softening degreasing, pickling, tanning, re-tanning, dyeing, fatliquoring, drying, milling, base coating, middle coating, embossing, top coating and other steps. According to the present invention,the biological enzyme is introduced and is used before pretreatment, tanning and retanning of the raw skin, such that the efficiency of liming hair removal, degreasing, deodorization and other processes is improved, the use of strong acid, strong alkali and a large amount of surfactants is reduced, and the generation of pollutants is reduced; due to the strengthened degreasing treatment effect, the protection effect on the leather fiber is significant, and the problems of loose grain and the like of the product are improved; and the leather made of the new material through the new process hasexcellent interfibrilliary substance removing effect, low odor, low atomization and other low emission characteristics due to the complete degreasing.
Description
Technical field [0001] The invention belongs to the technical field of new materials, and particularly relates to a method for producing low-odor clean automotive interior leather by using biological enzyme technology. Background technique [0002] Hair removal is a very important process in car seat leather tanning. The purpose of hair removal is to remove hair and epidermis. This process is one of the main sources of tannery pollution. Using the traditional sodium sulfide depilation method, the general liquid ratio is 2.0-3.0, lime is about 3%, sodium sulfide is about 3%, sodium sulfide only consumes 50-55% of the amount in the liming process, and lime only consumes 40- of the amount. 45%, a large amount of sodium sulfide and lime remain in the wastewater. Domestic general tannery companies must discharge 3-5m for every ton of skin produced 3 The BOD value in the dehairing and liming waste liquid is as high as 5000-10000mg / L. The COD value is as high as 1000-25000mg / L, and t...
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