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Technique for preparing goat chrome-free tanning upper leather

A production process, chrome-free tanning technology, applied in leather dipping, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., can solve problems such as chromium pollution, and achieve The effect of plump leather body, smooth grain surface and safe operation process

Inactive Publication Date: 2009-02-04
JIANGSU XINGAINIAN LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a production process for goat chrome-free tanned shoe upper leather to solve the problem of chromium pollution in the leather making process

Method used

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  • Technique for preparing goat chrome-free tanning upper leather
  • Technique for preparing goat chrome-free tanning upper leather
  • Technique for preparing goat chrome-free tanning upper leather

Examples

Experimental program
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Effect test

specific Embodiment approach

[0029] A production process of goat chrome-free tanned shoe upper leather, which includes pickling, tanning, rinsing, neutralization, retanning, dyeing and oiling, fixing, coloring, washing, peeling, squeezing water the next day, vacuum 50℃ / 70 seconds The finished product can be obtained through the steps of hanging and drying, collecting the skin and leaving it still, restoring moisture, shaking and softening, trimming, stretching the board, and trimming.

[0030] In the rinsing step, oxalic acid is used to wash off the dirt on the surface of the skin, degreasing agent S008 is added to remove excess oil in the skin, and a neutralizer is added in the neutralization step to increase the pH value of the skin to adapt to the subsequent retanning and filling.

[0031] In the dyeing and oiling step, the purpose of oiling is to improve the softness of the leather body and improve the physical properties of the leather. Before oiling, a chelating agent is added to remove heavy metals in ...

Embodiment 1

[0032] Example 1 (The following percentages are calculated based on the weight percentage of acid peel)

[0033]

[0034]

[0035]

[0036] Washing, peeling, squeezing water the next day, vacuum 50 ℃ / 70 seconds, hanging and drying, peeling and standing, regaining moisture, shaking and stretching, bending, stretching, drying, and trimming are finished products.

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Abstract

The invention discloses a production process of goat free-chrome vamp leather, which comprises the following steps: pickling, tanning, rinsing, neutralizating, retanning, dying and oiling, fixing, color registering, water washing, leather outputting, wringing on the next day, vacuuming 50 DEG C / 70 seconds, air-drying, collecting leather for quiescence, damping quiescence, vibration staking, bending repair, toggling and trimming, all the steps are carried out and a finished product is completed. The invention is characterized in that zirconium tanning agents, vegetable tanning agents, synthesized tanning agents replace the traditional chrome tanning agents during tanning and retanning, the production process has no pollution, and has safe operation process; thus the effect of completely controlling the chrome pollution of the leather industry is achieved. The shrinking temperature of the obtained crust leather can reach 95 DEG C, the leather body is full, soft and elastic, the grain surface is neat and fine, and the physical and the mechanical properties can completely reach the requirements for the property of the goat vamp leather.

Description

Technical field [0001] The invention relates to a leather processing technology, in particular to a production technology of goat chrome-free tanned shoe upper leather. Background technique [0002] Traditional leather mostly uses chrome as a tanning agent. The processed chrome tanned leather has the advantages of high humidity resistance, good thermal stability, plump body and softness. However, because of the limited resources of chrome ore, people urgently need to find a substitute. Moreover, because the hexavalent chromium remaining in the tanning process is toxic, the chrome tanning process will cause serious pollution to the environment and harm the body of the operator. This phenomenon is currently difficult to effectively prevent. Therefore, as people pay more and more attention to the living environment and the use of environmentally friendly leather, the development of chrome-free tanned leather has become an inevitable trend. Summary of the invention [0003] In order...

Claims

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Application Information

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IPC IPC(8): C14C3/08C14C9/00
Inventor 涂颖科
Owner JIANGSU XINGAINIAN LEATHER
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