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Clean tanning method capable of reducing solid waste

A clean and leather technology, applied in the field of clean tanning, can solve the problems of increasing environmental pollution and limited treatment methods, so as to reduce the generation of solid waste, improve the firmness of leather, and maintain product quality. Effect

Inactive Publication Date: 2021-08-27
LIAONING FUXIN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment methods for solid waste are limited, and generally dumping landfill or incineration is the main method, which directly or indirectly increases the pollution to the environment

Method used

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Embodiment Construction

[0025] In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

[0026] The clean tanning method for reducing solid waste includes the following steps:

[0027] 1) Inspection of incoming raw materials: incoming inspection of leather and chemical materials.

[0028] 2) Grading and weighing: according to the source and weight range of the leather, it is graded and weighed. ...

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Abstract

The invention discloses a clean tanning method capable of reducing solid waste, which comprises the steps of pre-soaking, main soaking, ash wrapping and unhairing and the like, multiple charging is adopted in the ash wrapping and unhairing step, and proteolytic enzyme is added in the main soaking water to decompose part of protein to improve the unhairing efficiency. According to the clean tanning method capable of reducing the solid waste, a multi-step ash wrapping and unhairing treatment process is adopted, and the use of proteolytic enzyme is matched, so that the use of substances such as lime is remarkably reduced, and the generation of the solid waste is reduced. And on the basis, the product quality of the leather is kept, and meanwhile, the leather body compactness, the flatness, the soft hand feeling and the comfortable use performance of the product are improved.

Description

technical field [0001] The invention belongs to the technical field of tanning, and in particular relates to a clean tanning method for reducing solid waste. Background technique [0002] The current tanning production process is: raw material incoming inspection → grading weighing and feeding → pre-soaking → main soaking → ash packing → meat removal → flake weighing → ammonia-free deliming and softening → pickling → pre-tanning → drum stilling → Squeeze water for classification → Shave evenly → Dyeing → Fatliquoring → Stretching and squeezing → Drying and finishing → Finishing → Finished product. The tanning process has always required the use of a large amount of lime, and the minimum amount is more than 3% at present. The function of lime is to generate hydrolyzate OH-, which is used to treat the skin fibers. Due to the low solubility of lime and the presence of active ingredients in the liquid interstitium in the form of ions, a lot of solid waste will remain, which is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C1/04C14B1/02C14C1/06C14C1/08C14C3/02C14C15/00
CPCC14C1/04C14C1/06C14C15/00C14C1/08C14C3/02C14B1/02
Inventor 庄君新刘贤军罗晓莉
Owner LIAONING FUXIN NEW MATERIAL CO LTD
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