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Method for preparing reducing leather based on collagen fiber blank cloth by being combined with flocking process

A collagen fiber and grey fabric technology, which is applied in textiles and papermaking, etc., can solve the problem that grey fabrics cannot be coated and processed to prepare leather, etc., and achieve the effects of beautiful surface flatness, good flocking strength, and beautiful flocking effect.

Inactive Publication Date: 2017-10-03
徐琦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a method for preparing reduced skin based on collagen fiber gray cloth combined with flocking technology, by adopting a new surface flocking technology, the new type of collagen fiber gray cloth The upper and lower surfaces of gray cloth raw materials are flocked, and then further combined with the film transfer process to make leather, which solves the problem that this type of gray cloth cannot be prepared by the existing finishing process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 The following steps were adopted to realize the preparation of the reduced skin of the present invention:

[0031]1. Preparation of collagen fiber gray cloth: adopt the preparation method of collagen fiber for direct spinning described in Example 2 of patent ZL201510228478.4, use wet blue leather as raw material and go 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:

[0032] (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;

[0033] (2) Ultrasonic pretreatment: Prepare a polar solvent pretreatment solution rich in hydroxyl groups, adjust the pH to 7, raise the temperature to 45°C, completely immerse the cut wet blue leather in the pretreatment solution for 24 hour...

Embodiment 2

[0048] Embodiment 2 The following steps are adopted to realize the preparation of reduced skin of the present invention:

[0049] 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:

[0050] (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%;

[0051] (2) Ultrasonic pretreatment: Prepare the pretreatment solution, adjust the pH to 7, raise the temperature to 50°C, compl...

Embodiment 3

[0065] Embodiment 3 Use the following steps to realize the preparation of the reduced skin of the present invention:

[0066] 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:

[0067] (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;

[0068](2) Ultrasonic pretreatment: prepare a 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 heat the pretreatment solution to 60°C and adjust the pH It is 7.5, soaked for 1 hour, and ultrasonic low-frequency short-term oscillation is carried out at ...

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Abstract

The invention discloses a method for preparing reducing leather based on collagen fiber blank cloth by being combined with a flocking process. The method concretely comprises the steps of blank cloth glue coating, primary hot baking, secondary glue coating, secondary hot baking, flocking, drying and leather grinding. By using a novel surface flocking process, the flocking is performed on the upper and lower surfaces of the novel blank cloth raw material of the collagen fiber blank cloth; a film moving process is further combined for preparing the leather; the problem that the existing blank cloth of the type cannot realize the film forming for preparing the leather through the existing coating finishing processing process is solved. The reducing leather prepared by the method belongs to a fire-new leather product; 90 percent of raw materials are from effective ingredients of collagen fiber in the natural leather; the preparation process of split leather is used as the reference for the structural design and the preparation process. The method has the characteristics that the structure is simple; the collagen content is high (greater than 80 percent); good sense and effects of genuine leather (split leather) are realized; the mechanical performance is excellent, and the like.

Description

technical field [0001] The invention relates to a method for preparing leather, in particular to a method for preparing reduced leather based on a collagen fiber grey cloth combined with a flocking process, and belongs to the technical field of leather processing. Background technique [0002] Leather is an indispensable type of daily necessities in human life, and it 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 people's awareness of environmental protection, the hunting of wild animals is prohibited. Basically, the leather needed by human beings currently comes from artificially raised livestock animals. Although with the improvement of human feeding technology, the growth cycle of livestock has been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N7/00D06N3/14D06N3/00
Inventor 徐琦
Owner 徐琦