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Technique for dyeing Tan sheep skin

A technology of Tan sheepskin and craftsmanship, which is applied in the field of Tan sheepskin dyeing, can solve the problems of fading and uneven dyeing, and achieve the effects of improving efficiency, uniform dyeing and shortening processing time.

Inactive Publication Date: 2013-08-14
宁夏成丰农业科技开发股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing Tan sheepskin dyeing is generally done in a drum. Due to the structure of the Tan sheepskin and the particularity of its fur, it is prone to uneven dyeing and serious color fading.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] a) softening the tanned sheepskin after tanning and drying at normal temperature;

[0018] b) Carry out retanning treatment on the softened Tan sheepskin, the temperature of the retanning treatment is 30° C., and the time is 12 hours;

[0019] c) Degreasing the retanned sheepskin in the degreasing solution, the degreasing solution contains 0.6mol / L fatty alcohol polyoxyethylene ether and 5g / L washing powder, the degreasing time is 20min, and the temperature is 45°C;

[0020] d) Wash the degreased Tan sheepskin, and carry out a dyeing treatment after washing. The temperature of the first dyeing treatment is 32°C and the time is 35min. The pH of the dyeing slurry in the drum is 3.5, and the drum dyeing slurry contains 0.01g / For the dye of L, the dyeing paste also includes 6.0g / ml of salt, 1ml / L of quaternary ammonium salt formaldehyde-free color fixing agent, and 0.02g / L of acetic acid.

[0021] e) Add formic acid to the drum after the first dyeing treatment to perform...

Embodiment 2

[0027] a) softening the tanned sheepskin after tanning and drying at normal temperature;

[0028] b) Carry out retanning treatment on the softened Tan sheepskin, the temperature of the retanning treatment is 30° C., and the time is 12 hours;

[0029] c) Degreasing the retanned sheepskin in the degreasing solution, the degreasing solution contains 0.7mol / L fatty alcohol polyoxyethylene ether and 7g / L washing powder, the degreasing time is 20min, and the temperature is 40°C;

[0030] d) Wash the Tan sheepskin after the degreasing treatment, and perform a dyeing treatment after washing. The temperature of the first dyeing treatment is 30°C and the time is 35min. The pH of the dyeing slurry in the drum is 4, and the drum dyeing slurry contains 0.008g / For the dye of L, the dyeing paste also includes 6.0g / ml of salt, 1ml / L of quaternary ammonium salt formaldehyde-free color fixing agent, and 0.02g / L of acetic acid.

[0031] e) Add formic acid to the drum after the first dyeing tr...

Embodiment 3

[0037] a) softening the tanned sheepskin after tanning and drying at normal temperature;

[0038] b) Carry out retanning treatment on the softened Tan sheepskin, the temperature of retanning treatment is 32°C, and the time is 10h;

[0039] c) Degreasing the retanned sheepskin in the degreasing solution, the degreasing solution contains 0.6mol / L fatty alcohol polyoxyethylene ether and 7g / L washing powder, the degreasing time is 20min, and the temperature is 40°C;

[0040] d) Wash the degreased Tan sheepskin, and carry out a dyeing treatment after washing. The temperature of the first dyeing treatment is 30°C and the time is 35min. The pH of the dyeing slurry in the drum is 4, and the drum dyeing slurry contains 0.016g / The dye of L, also comprises the salt of 6.0g / ml, the acetic acid of 2ml / L quaternary ammonium salt formaldehyde-free fixing agent, the acetic acid of 0.02g / L in the dyeing paste.

[0041] e) Add formic acid to the drum after the primary dyeing treatment for a ...

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PUM

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Abstract

The invention discloses a technique for dyeing Tan sheep skin, which comprises the steps of softening, retanning, primary dyeing, primary color fixation, modification, secondary dyeing and secondary color fixation. The dyeing and color fixation are sequentially carried out twice, thereby avoiding the phenomena of nonuniform dyeing and unclear pores due to thick coating, and ensuring the uniform dyeing of the Tan sheep skin. The treatment time of the whole dyeing technique is short. The modification is to change the positive charges on the leather surface to enhance the electropositivity, i.e. the leather surface is positively charged, thereby being beneficial to combination with the secondary dye and laying stress on the surface.

Description

technical field [0001] The invention relates to the field of animal fur processing, in particular to a process for dyeing sheepskin Background technique [0002] Tan sheepskin is one of my country's traditional export native products. It is well-known at home and abroad for its strong leather board, light weight and warmth, smooth and beautiful fur, and curved wave pattern. It is a unique animal husbandry resource in Ningxia. Existing Tan sheepskin dyeing is generally completed in a drum. Due to the structure of the Tan sheepskin and the particularity of its fur, it is prone to uneven dyeing and serious color loss. Therefore it is necessary to provide a process for evenly dyed sheepskin. Contents of the invention [0003] The object of the present invention is to provide a process for dyeing Tan sheepskin, which can uniformly dye Tan sheepskin. [0004] In order to achieve the above object, the present invention adopts following technical scheme: a kind of technique that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/30D06P1/673D06P1/653D06P1/645D06P1/66D06P1/651D06P5/04C14C3/22C14C5/00C14C1/08
Inventor 丁生国马占国席荣杨丽娟丁晓龙
Owner 宁夏成丰农业科技开发股份有限公司
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