Preparation method for coating-free and environmental-friendly full grain shoe upper leather

A kind of shoe upper leather, environmental protection technology, applied in the field of tanning, can solve the problems of formaldehyde, harm, stiffness and so on

Active Publication Date: 2016-12-14
HENAN PROSPER SKINS & LEATHER ENTERPRISE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the surface of full-grain leather is not painted, it can maintain the softness, elasticity and good air permeability of the leather. The finished product has good comfort, but there are problems of poor appearance quality and unclear grain surface
The full-grain leather of the prior art is less directly used without surface coating, and most of them are beautified and finished, which brings environmental protection problems and cost increases.
[0004] In addition, the current tanning process generally has great environmental protection problems: the hexavalent chromium in the tanning agent is very harmful to the human body; the use of organic phosphorus has strong tanning properties and good fullness, but there is a large amount of APEO in

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of preparation method of full-grain non-coated environment-friendly shoe upper leather, comprises the following steps:

[0026] (1) Tanning. Take 20 pieces of domestic soil pickle hides that have been depilated and tan them in a drum. Each pickle hide weighs 1.3KG. During the tanning process, add salt water, sodium formate, tanning agent, degreasing agent, anti-tear oil, pickling aid and softening enzyme for tanning; after draining, add water, anti-tear oil, TWB tanning enhancer, anti-mold agent, pickling After the auxiliary agent and formic acid are fixed once, wet white skin is obtained;

[0027] Described tanning agent is TWS chrome-free tanning agent;

[0028] (2) The tanned wet white hides are processed by horse riding, squeezing and smoothing in turn;

[0029] (3) Retanning and dyeing, add water, degreasing agent, and iron remover to the wet white skin after squeezing and shaving, and then carry out filling treatment, adding water, compact small-molecule ...

Embodiment 2

[0039] A kind of preparation method of full-grain non-coated environment-friendly shoe upper leather, comprises the following steps:

[0040] (1) Tanning. Take 20 pieces of domestic soil pickle hides that have been depilated and tan them in a drum. Each pickle hide weighs 1.3KG. During the tanning process, add salt water, sodium formate, tanning agent, degreasing agent, anti-tear oil, pickling aid and softening enzyme for tanning; after draining, add water, anti-tear oil, TWB tanning enhancer, anti-mold agent, pickling After the auxiliary agent and formic acid are fixed once, wet white skin is obtained;

[0041] Described tanning agent is TWS chrome-free tanning agent;

[0042] (2) The tanned wet white hides are processed by horse riding, squeezing and smoothing in turn;

[0043](3) Retanning and dyeing, add water, degreasing agent, and iron remover to the wet white skin after squeezing and shaving, and then carry out filling treatment, adding water, compact small-molecule a...

Embodiment 3

[0053] A kind of preparation method of full-grain non-coated environment-friendly shoe upper leather, comprises the following steps:

[0054] (1) Tanning. Take 20 pieces of domestic soil pickle hides that have been depilated and tan them in a drum. Each pickle hide weighs 1.3KG. During the tanning process, add salt water, sodium formate, tanning agent, degreasing agent, anti-tear oil, pickling aid and softening enzyme for tanning; after draining, add water, anti-tear oil, TWB tanning enhancer, anti-mold agent, pickling After the auxiliary agent and formic acid are fixed once, wet white skin is obtained;

[0055] Described tanning agent is TWS chrome-free tanning agent;

[0056] (2) The tanned wet white hides are processed by horse riding, squeezing and smoothing in turn;

[0057] (3) Retanning and dyeing, add water, degreasing agent, and iron remover to the wet white skin after squeezing and shaving, and then carry out filling treatment, adding water, compact small-molecule ...

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PUM

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Abstract

The invention discloses a preparation method for coating-free and environmental-friendly full grain shoe upper leather. The preparation method comprises the following steps: (1) tanning: rotationally tanning pickled skin after being depilated in a rotary drum, adding saline, sodium formate, a tanning agent, a degreaser, tear-resistance oil, a pickling auxiliary and macerating enzyme in the tanning process, and carrying out tanning, wherein the tanning agent is a TWS chrome-free tanning agent; (2) sequentially carrying out leather stacking and squeezing and shaving treatment on wet-white leather after being tanned; (3) carrying out retanning and staining; and (4) sequentially carrying out secondary leather stacking, spreading, squeezing, vacuum drying, hang drying, water spraying, standing, soft vibration, toggling, oil wax spraying, polishing, top oil feeling agent spraying and ironing to obtain a finished product. The preparation method is simple and environmental friendly; and in addition, with adoption of the preparation method, the obtained full grain shoe upper leather is compact and plump and accords with the idea of modern ecological leather making.

Description

technical field [0001] The invention belongs to the technical field of tanning, and in particular relates to a method for preparing full-grain uncoated environmental-friendly shoe upper leather. Background technique [0002] Full-grain leather refers to the leather that retains and uses the original surface of animal leather, also called front leather. The grain layer of the leather remains intact, and the unique pores and grain characteristics of animal leather can be clearly seen. Full-grain leather is the main variety of leather, representing the mainstream and technological level of the tanning industry, especially full-grain shoe upper leather. [0003] When the surface of full-grain leather is not painted, it can maintain the softness, elasticity and good air permeability of the leather. The finished product has good comfort, but there are problems of poor appearance quality and unclear grain surface. The full-grain leather of the prior art is less directly used witho...

Claims

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Application Information

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IPC IPC(8): C14C3/28C14C3/08C14C3/16C14C5/00C14C9/00C14C9/02C14C11/00D06P1/52
CPCC14C3/08C14C3/16C14C3/28C14C5/00C14C9/00C14C9/02C14C11/00D06P1/5257D06P1/5264
Inventor 孙要刚仲济德李海林
Owner HENAN PROSPER SKINS & LEATHER ENTERPRISE
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