Method for preparing reducing leather based on collagen fiber grey fabric by combining with spunlacing technology

A collagen fiber and collagen fiber technology, applied in non-woven fabrics, textiles and papermaking, etc., can solve the problems of inability to obtain grey fabrics to process and make high-quality leather products, achieve superior mechanical properties, increase elasticity and feel, simple structure

Active Publication Date: 2017-11-24
徐琦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The gray cloth obtained by spinning and weaving collagen fibers has a surface structure of warp and weft weaving, and the flatness is not enough to directly form a film through co

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 adopts the following steps to realize the present invention:

[0039] 1. Preparation of collagen fiber gray cloth: adopt the preparation method of collagen fiber for direct spinning described in the patent ZL201510228478.4, use wet blue leather as raw material through shearing, ultrasonic pretreatment, drum treatment, liquid defibration, Fiber drying, loosening and impurity removal, carding, and fiber surface treatment steps are used to prepare collagen fibers, and then the collagen fibers are spun into yarns and weaved by a spinning process to obtain collagen fiber fabrics; the specific steps are as follows:

[0040] (1) Cutting: use wet blue leather as raw material, and cut it into the size required by production or equipment with a leather shearing machine;

[0041] (2) Ultrasonic pretreatment: Prepare a pretreatment solution of a polar solvent rich in hydroxyl groups, the amount of the pretreatment solution is 6-25 times the weight of the wet blue leath...

Embodiment 2

[0053] Embodiment 2 Adopt the following steps to realize the present invention:

[0054] 1. Preparation of collagen fiber gray cloth: adopt the preparation method of collagen fiber for direct spinning described in Example 3 of patent ZL201510228478.4, use wet blue leather as raw material through shearing, ultrasonic pretreatment, drum treatment, liquid Collagen fibers are obtained through the steps of fiber disintegration, fiber drying, opening and impurity removal, carding, and fiber surface treatment. The specific steps are as follows:

[0055] (1) Cutting: use wet blue leather as raw material, cut it into the size required by production or equipment with a leather shearing machine, immerse the wet blue leather raw material in a water pool for 2 to 5 minutes, and dry until the moisture content is 60 to 80%;

[0056] (2) Ultrasonic pretreatment: Prepare the pretreatment solution, adjust the pH to 7, raise the temperature to 50°C, completely immerse the wet blue leather in the...

Embodiment 3

[0068] Embodiment 3 Adopt the following steps to realize the present invention:

[0069] 1. Preparation of collagen fiber gray cloth: adopt the preparation method of collagen fiber for direct spinning described in Example 4 of patent ZL201510228478.4, use wet blue leather as raw material and go through shearing, ultrasonic pretreatment, drum treatment, liquid The specific steps for producing collagen fibers are as follows:

[0070] (1) Cutting: use wet blue leather as raw material, and cut it into the size required by production or equipment with a leather shearing machine;

[0071] (2) Ultrasonic pretreatment: Prepare the pretreatment solution, adjust the pH to 7.5, raise the temperature to 40°C, completely immerse the cut wet blue leather in the pretreatment solution for 20 hours, then raise the temperature of the pretreatment solution to 60°C, and adjust the pH 7.5, then soak for 1 hour, and perform ultrasonic low-frequency short-term oscillation at the current temperature...

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PUM

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Abstract

The invention discloses a method for preparing reducing leather based on collagen fiber grey fabric by combining with a spunlacing technology. The method comprises the following steps of treating of the collagen fiber grey fabric by the spunlacing technology, and preparing by a non-solvent film forming technology. The method has the advantages that according to the characteristics of the collagen fiber grey fabric, the reducing leather is prepared by the spunlacing technology and the non-solvent film forming technology, so that the obtained reducing leather has the sense and effect of true leather (two-layer leather), simple structure, high content of collagen (greater than 80%), and excellent mechanical property; the grey fabric treated by the spunlacing technology is treated by the non-solvent film forming technology to prepare a resin layer at the surface of the grey fabric, the elasticity and the hand feel of the reducing leather are improved, and the high-quality leather product is obtained; the utilization rate of the leather raw material is greatly improved, and the environment-friendly level of the leather industry is effectively improved.

Description

technical field [0001] The invention relates to a method for preparing leather, in particular to a method for preparing reduced leather by combining collagen fiber gray cloth with a spunlace process, and belongs to the technical field of leather processing. Background technique [0002] Leather is an indispensable category of production and daily necessities in human life, and is widely used in many fields such as clothing, home furnishing, automobiles, and public services. The source of leather is only the skin of animals raised and hunted by humans, mainly cowhide, sheepskin, pigskin and some special leathers, such as crocodile skin, snake skin and even shark skin. Due to the improvement of human awareness of environmental protection, the hunting of wild animals is prohibited. Basically, the leather needed by humans currently comes from artificially raised domestic animals. Although with the improvement of human feeding technology, the growth cycle of domestic animals has...

Claims

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Application Information

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IPC IPC(8): D06N3/14D06N3/00D04H1/492
CPCD04H1/492D06N3/0011D06N3/0018D06N3/0056D06N3/0077D06N3/0088D06N3/009D06N3/14D06N2211/28
Inventor 徐琦
Owner 徐琦
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