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Processing technology for washable and environment-friendly clothing leather

A processing technology and garment leather technology, applied in leather dipping, small raw hide/big raw hide/leather/fur treatment, leather/skin/leather/raw hide chemical treatment equipment, etc., can solve poor washing resistance and chrome tanning. Environmental protection and other issues, to achieve the effect of improving washing resistance, improving mechanical properties, and improving absorption

Active Publication Date: 2017-01-04
湖南永霏特种防护用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the odor produced by garment leather, poor washing resistance, and chrome tanning, which are not environmentally friendly, the present invention uses material A (sodium edetate, 1,2-dimethyl-3-hydroxyl-4-pyridone, 2-Hydroxypropane-1,2,3-tricarboxylic acid sodium, 2-phosphonic acid butane-1,2,4-tricarboxylic acid sodium salt, aminotrimethylenephosphonic acid, 1,2,3,4, 5,6-Cyclohexanehexacarboxylic acid sodium salt, sodium gluconate, and tetrasodium iminodisuccinate fix the aluminum tanning agent, which makes up for the defects of traditional aluminum tanning agents in washing resistance. At the same time, naringin, N- Naphthalene-1-yl-3-hydroxynaphthalene-2-carboxamide and aminoacetic acid improve the mechanical properties of garment leather, naringin, N-naphthalene-1-yl-3-hydroxynaphthalene-2-carboxamide and glycine Improve the leather's absorption of small molecular acrylic resins, sorbitol, mannitol, tetrakis hydroxymethyl phosphorus chloride, and aluminate coupling agents can fix oils and small molecular compounds, and improve the leather's water washability

Method used

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  • Processing technology for washable and environment-friendly clothing leather
  • Processing technology for washable and environment-friendly clothing leather
  • Processing technology for washable and environment-friendly clothing leather

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Starting from the sour skin embryo, the amount of additives added in each process is based on the weight of the sour skin:

[0024] (1) Tanning: 80% liquid ratio is left in the conventional clothing leather pickling solution, add 0.8% sodium formate, 0.3% baking soda, rotate for 60 minutes at 28°C, add aluminum tanning agent (Guangdong Gaoli Group Co., Ltd.) 3.0%, And keep rotating for 1 hour, then add 1.0% sodium formate and 0.2% sodium edetate to adjust the pH to 3.5-3.6, stir for 50 minutes, then add 1.2% baking soda to adjust the pH to 4.0, then raise the temperature to 30°C, and rotate for 300 minutes; After the described tanning step, the steps of taking out the drum, putting the horse on the horse, softening it with pressure water, peeling and trimming the edges are carried out successively. In the step of peeling the leather, the thickness of the double layer of leather is controlled to be 1.2 cm, and then the smoothing process is carried out. Controlling the do...

example 2

[0029] Starting from the sour skin embryo, the amount of additives added in each process is based on the weight of the sour skin:

[0030] (1) Tanning: 80% of the liquid ratio remains in the conventional garment leather pickling solution, add 1.3% sodium formate, 0.6% baking soda, stir at 28°C for 90 minutes, then add 4.2% aluminum tanning agent in turn, and keep rotating for 1 hour, then add 1.2% sodium formate and 0.2% of 1,2-dimethyl-3-hydroxy-4-pyridone to adjust the pH to 3.5-3.6, rotate for 70 minutes, then add 2.0% baking soda to adjust the pH to 5.0, then raise the temperature to 40°C, Stir for 400min;

[0031] After the described tanning step, carry out successively the steps of taking out the drum and putting the horse on the horse, pressing the water to soften it, slicing the skin, and shaving and trimming the edges. The double thickness of the leather is 1.3cm;

[0032] (2) Retanning: liquid ratio 200%, add 3% wattle extract, 2% small molecule acrylic retanning a...

example 3

[0036] Starting from the sour skin embryo, the amount of additives added in each process is based on the weight of the sour skin:

[0037] (1) Tanning: 80% of the liquid ratio remains in the conventional clothing leather pickling solution, add 1.1% sodium formate, 0.5% baking soda, stir at 28°C for 75 minutes, then add 3.6% aluminum tanning agent in turn, and keep rotating for 1 hour, then add 1.1% sodium formate, 0.2% sodium 2-hydroxypropane-1,2,3-tricarboxylate and 0.3g trimethylolpropane trimethacrylate to adjust the pH to 3.5-3.6, rotate for 60min, then add 1.6% small Adjust the pH to 4.5 with soda, then raise the temperature to 35°C, and stir for 350 minutes;

[0038] After the tanning step, the steps of taking out the drum and putting the horse on the horse, pressing water to soften it, peeling and trimming the edges are carried out sequentially. The double thickness of the leather is 1.2cm;

[0039] (2) Retanning: the ratio of mediation solution is 175%, add wattle ba...

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PUM

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Abstract

The invention discloses a processing technology for washable and environment-friendly clothing leather. The processing technology is characterized in that chrome-free tan, sodium ethylene diamine tetracetate, 1,2-dimethyl-3-hydroxy-4-pyridone, 2-hydroxy propane-1,2,3-tricarboxylic acid sodium, 2-phosphonic acid butane-1,2,4-tricarboxylic acid sodium salt and amino trimethylene phosphonic acid are used for fixing an aluminum tanning agent, and the washing resistance of the clothing leather is improved; and meanwhile, the mechanical performance of the clothing leather is improved by adopting naringin, N-naphthalene-1-radical-3-hydroxyl naphthalene-2-formamide and glycine, so that the washable and environment-friendly clothing leather is prepared.

Description

technical field [0001] The invention relates to a garment leather processing technique, in particular to a washable and environment-friendly garment leather processing technique. Background technique [0002] Tanning is an important step in the process of turning raw hide into leather. The quality of the tanning process directly affects the physical and chemical properties of the finished leather, and has an important relationship with the value of the finished leather. The main tanning agent currently used is trivalent chromium salt. Trivalent chromium salt tanning agent has the advantages of washing resistance, storage resistance, and good moisture and heat resistance. However, the global chromium resources are limited, and chromium is a heavy metal. The waste liquid and dander produced when using it to tan raw hides inevitably contain trivalent chromium. These chromium-containing wastes will inevitably cause damage to the ecological environment, and trivalent chromium is ...

Claims

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Application Information

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IPC IPC(8): C14C3/28C14C3/04C14C3/08C14C9/02C14C15/00
CPCC14C3/04C14C3/08C14C3/28C14C9/02C14C15/00
Inventor 施亮施红兵
Owner 湖南永霏特种防护用品有限公司
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