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Method for producing regenerated leather

A manufacturing method and a technology for regenerating leather, applied in textiles and papermaking, etc., to achieve the effect of high effective utilization rate, large volume, and clean and tidy production area

Inactive Publication Date: 2011-04-27
ZHEJIANG SUNNYESINA REGENERATED LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the deficiencies in the above-mentioned tanning process, and to provide an assembly line regeneration process with high production efficiency, strong continuous production capacity, low labor intensity, no pollution, wide application range and high effective utilization rate of products. Leather manufacturing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 1. Crushing of dander: put dander into the pulverizer to crush, and set automatic water addition to make a certain concentration of dander;

[0014] 2. Reprocessing of leather pulp: the leather pulp is finely ground for 60 minutes once, put into the tanning pool and tanned with tanning assistants for 40 minutes, and then refined for a second time for 50 minutes, adding fatliquor, dyes, etc. and mixing evenly;

[0015] 3. Dehydration: Let the processed slurry, natural latex, and aluminum sulfate gather and mix evenly, and then evenly distribute it on the wet bed mesh belt. The slurry will be dehydrated and formed under the action of the wet bed mesh belt. Move forward at a certain speed, and then go through pre-compression, roller squeeze roller and horizontal press for secondary dehydration;

[0016] 4. Drying: The cloth-like slurry on the mesh belt follows the conveyor belt and enters a drying room at a temperature of 60-65°C for 5-30 minutes;

[0017] 5. Edge trimmin...

Embodiment 2

[0021] 1. Crushing of dander: put dander into the pulverizer to crush, and set automatic water addition to make a certain concentration of dander;

[0022] 2. Reprocessing of hide pulp: finely grind leather pulp for 40 minutes once, enter the tanning tank for tanning with tanning assistants for 30 minutes, and then finely grind for a second time for 60 minutes, add fatliquor, dyes, etc. and mix evenly;

[0023] 3. Dehydration: Let the processed slurry, natural latex, and aluminum sulfate gather and mix evenly, and then evenly distribute it on the wet bed mesh belt. The slurry will be dehydrated and formed under the action of the wet bed mesh belt. Move forward at a certain speed, and then go through pre-compression, roller squeeze roller and horizontal press for secondary dehydration;

[0024] 4. Drying: The cloth-like slurry on the mesh belt follows the conveyor belt and enters a drying room at a temperature of 70-75°C for 5-30 minutes;

[0025] 5. Edge trimming: After the d...

Embodiment 3

[0029] 1. Crushing of dander: put dander into the pulverizer to crush, and set automatic water addition to make a certain concentration of dander;

[0030] 2. Reprocessing of hide pulp: finely grind leather pulp for 80 minutes once, enter the tanning tank for tanning with tanning assistants for 50 minutes, and then finely grind for a second time for 40 minutes, add fatliquor, dyes, etc. and mix evenly;

[0031] 3. Dehydration: Let the processed slurry, natural latex, and aluminum sulfate gather and mix evenly, and then evenly distribute it on the wet bed mesh belt. The slurry will be dehydrated and formed under the action of the wet bed mesh belt. Move forward at a certain speed, and then go through pre-compression, roller squeeze roller and horizontal press for secondary dehydration;

[0032] 4. Drying: The cloth-like slurry on the mesh belt follows the conveyor belt and enters a drying room at a temperature of 80-85°C for 5-30 minutes;

[0033] 5. Edge trimming: After the d...

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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Abstract

The invention relates to a method for producing regenerated leather. In the invention, a production line type production method is adopted to continuously carry out the working procedures as follows: crushing leather scraps; retreating leather slurry; dewatering and drying the slurry; trimming and polishing; and ironing smoothly and rolling to prepare the regenerated leather finished product with the advantages of continuous width, smooth and level surface, and excellent property. The method has the advantages of high production efficiency, strong continuous production capability, low labor strength, no pollution, wide application range and high effective utilization rate of the product.

Description

technical field [0001] The invention relates to a method for manufacturing regenerated leather. Background technique [0002] At present, the manufacturing method of regenerated leather is generally to use the discarded scraps (referred to as dander) of tanneries and leather products factories, adopt wet manufacturing process to make leather blanks, and then use them after processing such as sheeting and grinding. The whole process is time-consuming and laborious, and cannot achieve continuous production; the process of making leather blanks requires a lot of water, and because it cannot be directly connected with other processes, more than 70% of the water is discharged in the form of waste water. The production of 1 ton of finished recycled leather will discharge about 80 tons of waste water. In addition, the phenomenon of "end and tail waste" occurs when the hide is sliced, and the yield is low, so hide resources and related materials are wasted, and labor intensity is i...

Claims

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N7/02
Inventor 曾永强
Owner ZHEJIANG SUNNYESINA REGENERATED LEATHER
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