Crocodile skin clean leather-making processing method

A processing method and technology of crocodile skin, applied in the field of clean tanning of crocodile skin, can solve problems such as difficulty in adjusting the thickness of crocodile leather, high chroma of dyeing wastewater, and excessive sulfide, so as to improve product stability and reduce color. degree, pattern clear effect

Active Publication Date: 2015-05-20
蚌埠启邦科技信息咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a clean tanning processing method for crocodile skin, which solves serious chloride ion pollution in the existing tanning technology, serious excess of sulfide in waste liquid, high chroma of dyeing wastewater, and difficulty in adjusting the thickness of crocodile skin tanning, etc. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0202] Fresh hide soaked in brine→salt rolling→preservation, transportation→grading, grouping→bundling→weighing→presoaking→soaking→fleshing→degreasing, preliming→liming→scaling→deliming→the first joint bleaching →softening→second combined bleaching→softening oracle bones→pickling, softening→tanning→grinding→degreasing, rinsing→neutralization, retanning, dyeing, fatliquoring→drying of nail plates→shoveling→finishing;

[0203] The amount of chemical materials used in each process is based on the quality of crocodile skin;

[0204] In the process:

[0205] Fresh skin soaking in salt water process: Soak the fresh skin in saturated saline with 1% degreasing agent, 0.5% fungicide, and 1% boric acid for 12 hours, rinse off the blood stains and feces, and then control the water;

[0206] Rolling salt process: After controlling the water, use 5% fine salt to carry out rolling salt treatment in the drum, the speed is 3r / min, and the time is 0.5h, and then it is packed into a nearly squ...

Embodiment 2

[0297] Fresh hide soaked in brine→salt rolling→preservation, transportation→grading, grouping→bundling→weighing→presoaking→soaking→fleshing→degreasing, preliming→liming→scaling→deliming→the first joint bleaching →softening→second combined bleaching→softening oracle bones→pickling, softening→tanning→grinding→degreasing, rinsing→neutralization, retanning, dyeing, fatliquoring→drying of nail plates→shoveling→finishing;

[0298] The amount of chemical materials used in each process is based on the quality of crocodile skin;

[0299] In the process:

[0300] Fresh skin soaking in salt water process: Soak the fresh skin in saturated salt water with 2% degreasing agent, 0.4% fungicide, and 1%~2% boric acid for 9 hours, rinse off the blood stains and feces, and then control the water;

[0301] Rolling salt process: After controlling the water, use 7% fine salt to carry out rolling salt treatment in the drum, the speed is 2r / min, and the time is 1h, and then it is packed into a square...

Embodiment 3

[0391] Fresh hide soaked in brine→salt rolling→preservation, transportation→grading, grouping→bundling→weighing→presoaking→soaking→fleshing→degreasing, preliming→liming→scaling→deliming→the first joint bleaching →softening→second combined bleaching→softening oracle bones→pickling, softening→tanning→grinding→degreasing, rinsing→neutralization, retanning, dyeing, fatliquoring→drying of nail plates→shoveling→finishing;

[0392] The amount of chemical materials used in each process is based on the quality of crocodile skin;

[0393] In the process:

[0394] Fresh skin soaking in salt water process: Soak the fresh skin in saturated saline with 3% degreasing agent, 0.3% fungicide, and 2% boric acid for 6 hours, rinse off the blood stains and feces, and then control the water;

[0395] Rolling salt process: After controlling the water, use 10% fine salt to carry out rolling salt treatment in the drum, the speed is 1r / min, and the time is 2h, and then it is packed into a square with ...

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Abstract

The invention relates to a crocodile skin clean leather-making processing method. In the existing leather-making process, the problems of chloride ion contamination, excessive sulfide in a waste liquid, high chromaticity of dyeing wastewater, difficulty in the thickness adjustment of the crocodile skin and the like are more serious. The crocodile skin clean leather-making processing method comprises the following steps of soaking the fresh crocodile skin in saline water, rolling salt, preserving, transporting, classifying, grouping and batching, bundling, weighing, pre-soaking, soaking, removing meat, degreasing, pre-liming, liming, brushing scale, deliming, carrying out primary combined bleaching, softening, carrying out secondary combined bleaching, softening oracle bone, pickling, softening, tanning, fluffing leather, degreasing, rinsing, neutralizing, re-tanning, dyeing, greasing, drying on a nail plate, scrubbing the leather and finishing. By the crocodile skin clean leather-making processing method, the usage amount of salt can be greatly decreased in the aspect of corrosion resistance of raw crocodile skin, the crocodile skin is convenient to transport, the content of S<2-> in the waste liquid and the chromaticity of the waste liquid are effectively decreased, the thickness of the leather can be precisely adjusted and the high-brightness leather can be obtained by virtue of finishing. The crocodile skin produced by the clean production process has clear pattern and the shrinkage temperature and physical and mechanical properties can reach the national standards.

Description

technical field [0001] The invention belongs to the technical field of leather processing, and in particular relates to a clean tanning processing method for crocodile skin. Background technique [0002] Salting method is the most commonly used method for raw hide preservation. It has the advantages of simple operation, low cost, wide application range, long storage period and good preservation quality. It is currently the most popular method for raw hide preservation and preservation in various countries. However, this method requires a large amount of salt (30%~40% of fresh tare weight), which brings a lot of salt pollution (accounting for 70% of the total salt pollution in tanneries), and the total dissolved solids in wastewater are relatively high. high. In recent years, due to the enhancement of people's awareness of environmental protection, the governments of various countries have established more and more strict standards for sewage discharge, and the salting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C1/00C14C1/04C14C1/06C14C1/08C14C3/06C14C3/28C14C3/30C14C9/02C14C11/00C14B1/00C14B1/02C14B1/60C14B1/62D06L3/02D06L3/10D06L4/13
CPCC14B1/00C14B1/02C14B1/60C14B1/62C14B2700/01C14B2700/07C14C1/00C14C1/04C14C1/06C14C1/08C14C3/06C14C3/28C14C3/30C14C9/02C14C11/00
Inventor 强涛涛高鑫高翔张健康王学川
Owner 蚌埠启邦科技信息咨询有限公司
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