Dyeing process for improving level dyeing property of sheared fine-wool leather

A kind of craft and fur leather technology, which is applied in the field of leather processing and processing, can solve the problems affecting the color uniformity of the dye uptake rate, the poor color uniformity of the fur surface, and the influence of the tanning and dyeing of the wool, so as to improve the level dyeing property, Low production cost and reduced binding effects

Active Publication Date: 2021-02-23
隆丰革乐美时尚有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is precisely because the hair is thinner and the scales of the hair are closely arranged, so it is not easy to open during tanning and dyeing, which in turn affects the tanning and dyeing of the wool. The arrangement is relatively tight, and the capillaries have a strong sense of velvet, while the side skirts are often in contact with the ground, and the hair is thin and thick. At the same time, the hair is polluted by urine, feces, bacteria and other microorganisms and turns yellow.
These factors will directly affect the dye uptake rate and color uniformity during dyeing, resulting in poor color uniformity of the wool surface, serious color spots on a single sheet, and greatly reduced aesthetics.

Method used

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  • Dyeing process for improving level dyeing property of sheared fine-wool leather
  • Dyeing process for improving level dyeing property of sheared fine-wool leather
  • Dyeing process for improving level dyeing property of sheared fine-wool leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0145] 1) Put the skin into the inclined drum, the liquid ratio is 1:18, the temperature is 38°C, add 0.5g / l ML-N, rotate for 30 minutes, add 0.5g / L SL, 0.5g / L TIS rotate for 60 minutes, add Formic acid 1g / l, rotate for 20 minutes, add chromium powder 2g / l, HN2g / L, rotate for 90 minutes, then add sodium formate 2g / l, rotate for 30 minutes. drain.

[0146] 2) Add water at 25°C to the inclined drum, the liquid ratio is 1:18, add 0.5g / l formic acid, wash for 20 minutes, and drain.

[0147] 3) Add water at 25°C to the inclined drum with a liquid ratio of 1:18, wash for 20 minutes, and drain.

[0148] 4) Add water at 65°C to the inclined drum, the liquid ratio is 1:18, add FL-1 2g / l, P 0.5g / l, nitric acid 1.5g / l and rotate for 20 minutes, add hair dyeing dye and rotate for 20 minutes, Add glacial acetic acid 0.5g / L, rotate for 20 minutes, add fatliquoring agent TIS0.5g / l, GLH 1g / l rotate for 30 minutes, add formic acid 0.5g / l, rotate for 20 minutes, add formic acid 0.5g / l, rotate...

Embodiment 2

[0162] 1) Put the skin into the inclined drum, the liquid ratio is 1:18, the temperature is 38°C, add 0.5g / l ML-N, rotate for 30 minutes, add 0.5g / L SL, 0.5g / L TIS rotate for 60 minutes, add Formic acid 1g / l, rotate for 20 minutes, add chromium powder 2g / l, HN2g / L, rotate for 90 minutes, then add sodium formate 2g / l, rotate for 30 minutes. drain.

[0163] 2) Add water at 25°C to the inclined drum, the liquid ratio is 1:18, add 0.5g / l formic acid, wash for 20 minutes, and drain.

[0164] 3) Add water at 25°C to the inclined drum with a liquid ratio of 1:18, wash for 20 minutes, and drain.

[0165] 4) Add water at 65°C to the inclined drum, the liquid ratio is 1:18, add FL-1 2g / l, P 0.5g / l, nitric acid 1.5g / l and rotate for 20 minutes, add hair dyeing dye and rotate for 20 minutes, Add 0.5g / L glacial acetic acid, rotate for 20 minutes, add 0.5g / l formic acid, rotate for 20 minutes, add 0.5g / l formic acid, rotate for 30 minutes to adjust the pH to 3.9.

[0166] 5) Add water at...

Embodiment 3

[0173] 1) Put the skin into the inclined drum, the liquid ratio is 1:18, the temperature is 38°C, add 0.5g / l ML-N, rotate for 30 minutes, add 0.5g / L SL, 0.5g / L TIS rotate for 60 minutes, add Formic acid 1g / l, rotate for 20 minutes, add HN5g / L, rotate for 90 minutes, then add sodium formate 2g / l, rotate for 30 minutes. drain.

[0174] 2) Add water at 25°C to the inclined drum, the liquid ratio is 1:18, add 0.5g / l formic acid, wash for 20 minutes, and drain.

[0175] 3) Add water at 25°C to the inclined drum with a liquid ratio of 1:18, wash for 20 minutes, and drain.

[0176] 4) Add water at 65°C to the inclined drum, the liquid ratio is 1:18, add FL-1 2g / l, P 0.5g / l, nitric acid 1.5g / l and rotate for 20 minutes, add hair dyeing dye and rotate for 20 minutes, Add glacial acetic acid 0.5g / L, rotate for 20 minutes, add fatliquoring agent TIS0.5g / l, GLH 1g / l rotate for 30 minutes, add formic acid 0.5g / l, rotate for 20 minutes, add formic acid 0.5g / l, rotate for 30 minutes Minut...

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Abstract

The invention provides a woolen leather dyeing process which comprises the following step of carrying out wool dyeing and plate dyeing on a retanned woolen leather material so as to obtain dyed woolenleather, wherein a wool dyeing agent used in the wool dyeing step comprises an alkyl phosphate dyeing auxiliary agent; and in the plate dyeing step, a fatting agent is added firstly, and then dye isadded. According to the dyeing process for improving the level dyeing property of the sheared fine-wool leather provided by the invention, the combination of the dye and a wool quilt is greatly improved, the level dyeing property is improved, the combination of the plate dyeing dye and the wool quilt is reduced, the uniformity of wool color is finally improved, the convenience in operation is realized, the production cost is low, the dyeing process is suitable for mass production, the product is environment-friendly and safe, and various safety performance indexes are qualified.

Description

technical field [0001] The invention belongs to the technical field of leather treatment and processing, and relates to a dyeing process of wool leather, in particular to a dyeing process for improving the level dyeing property of sheep shearling fine wool leather. Background technique [0002] Leather processing has a history of thousands of years. After a long period of development, tanning has developed from a simple manual operation to an important industrial technology field. [0003] Leather treatment refers to the process of turning perishable raw hide, that is, raw hide into soft and non-perishable leather after a series of processes. Usually from the raw leather to the finished leather, it is roughly divided into three stages, the preparation stage, the tanning stage and the finishing (finishing) stage, mainly including soaking, fleshing, depilation, liming, degreasing, softening, pickling, tanning and The follow-up finishing stage can be subdivided into batches--(...

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): D06P3/32D06P1/02D06P1/39D06P1/44C14C3/06C14C3/08
CPCD06P3/3206D06P3/3273D06P1/445D06P1/39D06P1/02C14C3/06C14C3/08Y02P70/62
Inventor 仲济德黄招赵广付贾兰英李海林赵克伟
Owner 隆丰革乐美时尚有限公司
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