Method for felt proofing on wool fabric through proteinase K

A protease and anti-felting technology, which is applied in the application field of wool fabric dyeing and finishing, can solve the problems of weak degradation of keratin in surface scales, large internal loss of wool, etc., achieves good comprehensive effect of anti-felting and reduces felting in washing The effect of small degree, strong damage

Active Publication Date: 2019-07-05
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the existing protease has a weak degradative effect on the keratin of the surface scales but a large loss inside the wool in the process of processing wool

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Fabric type: pure wool gabardine fabric

[0035] (1) Carbamide peroxide pretreated fabric: soak the woolen fabric in hot water at 90°C for 1 hour, then place it in a solution containing 30 mL / L of carbamide peroxide, 1.5 g / L of sodium pyrophosphate, and 1 g / L of penetrant JFC. Ratio 35:1, temperature 50°C, pH 8, treatment time 1h. After the end, rinse with water repeatedly and dry at 50°C.

[0036] (2) Protease K treatment of fabrics: soak the pretreated wool fabrics in hot water at 90°C containing 1 g / L chitosan oligosaccharide and 20 g / L urea for 1 h, and then put them in 16 U / g 织物 Proteinase K solution (enzyme solution temperature 50°C, pH 8, bath ratio 25:1, add 1mmol / L Ca 2+) for 6 hours of immersion treatment.

[0037] (3) Enzyme inactivation at 80°C for 10 minutes. After finishing, wash twice with hot water at 90°C and cold water at room temperature, and dry at 50°C.

[0038] After the above process, the felt shrinkage rate of the wool fabric is 5.02%, the w...

Embodiment 2

[0041] Fabric type: Varitin fabric

[0042] (1) Carbamide peroxide pretreated fabric: Soak the woolen fabric in hot water at 90°C for 1 hour, and then place it in a solution containing carbamide peroxide 30mL / L, sodium pyrophosphate 1.5g / L, and penetrant JFC 1g / L. Bath ratio 35:1, temperature 50°C, pH 8, treatment time 1h. After the end, rinse repeatedly with deionized water and dry at 50°C.

[0043] (2) Protease K treated fabric: soak the pretreated woolen fabric in 90°C hot water containing 1 g / L chitosan oligosaccharide and 20 g / L urea for 1 h, and put it in 4 U / g 织物 proteinase K solution (enzyme solution temperature 50°C, pH 8, bath ratio 25:1, add 1mmol / LCa 2+ ) for 4 hours of immersion treatment.

[0044] (3) Enzyme inactivation at 80°C for 10 minutes. After finishing, wash twice with hot water at 90°C and cold water at room temperature, and dry at 50°C.

[0045] After the above process, the felt shrinkage rate of the wool fabric is 5.96%, the weight reduction rate ...

Embodiment 3

[0049] Fabric type: Varitin fabric

[0050] (1) Carbamide peroxide pretreated fabric: Soak the woolen fabric in hot water at 90°C for 1 hour, then place it in a solution containing 10 mL / L of carbamide peroxide, 2 g / L of sodium pyrophosphate, and 2 g / L of penetrant JFC. Ratio 50:1, temperature 70°C, pH 6, treatment time 2h. After the end, rinse repeatedly with deionized water and dry at 50°C.

[0051] (2) Protease K treated fabric: soak the pretreated wool fabric in 90°C hot water containing 2g / L chitosan oligosaccharide and 40g / L urea for 1h, and put it into 25U / g 织物 Proteinase K solution (enzyme solution temperature 65°C, pH 10, bath ratio 20:1, add 2mmol / LCa 2+ ) for 4 hours of immersion treatment.

[0052] (3) Enzyme inactivation at 80°C for 10 minutes. After finishing, wash twice with hot water at 90°C and cold water at room temperature, and dry at 50°C.

[0053] After the above process, the felt shrinkage rate of the wool fabric is 4.92%, the weight reduction rate i...

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Abstract

The invention discloses a method for felt proofing on a wool fabric through proteinase K and belongs to the technical field of application of dyeing and finishing and processing of the wool fabric inthe wool spinning industry. The problems are solved that during common proteinase felt proofing, the damage to wool strength is large, and the function of degrading keratin in a scale layer is small.The aim of optimizing proteinase felt proofing on the wool fabric is achieved. The optimization technology comprises the steps that the pure wool fabric is pretreated through urea peroxide, CMC is closed through chitosan oligosaccharide, and then the wool fabric is treated through the proteinase K. According to the wool fabric treated through the method, the felt proofing performance is obviouslyimproved, and the damage to the fabric strength is lowered. According to the method, the proteinase K is introduced into wool felt proofing for the first time, the wool scale cytokeratin is effectively degraded through the proteinase K, the good felt proofing effect on wool is achieved, and traditional chlorination felt proofing can be replaced.

Description

technical field [0001] The invention relates to a method for performing anti-felting finishing on wool fabrics by using proteinase K, and belongs to the application technical field of wool fabric dyeing and finishing processing in the wool spinning industry. Background technique [0002] Wool has a plump feel, strong moisture absorption, is not easy to be stained with dirt and has excellent warmth retention. It is a popular high-end textile fabric. However, the special scale structure on the surface of wool fiber makes wool have unique shrinkage, and it is easy to produce felting phenomenon when washed. In addition, the good elasticity and crimp of wool also promotes the phenomenon of felting and affects its practicality. [0003] At present, the chlorination process is very common in the anti-felting treatment of wool. This method has a good anti-felting effect and improves the wetting performance of the fabric, but it has great damage to the wool, and the fabric is prone ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/432D06M16/00D06M11/68D06M15/03D06M101/12
CPCD06M13/432D06M16/003D06M11/68D06M15/03D06M2101/12D06M2200/45C12Y304/21064D06M11/72
Inventor 王强李文佳余圆圆袁久刚王平范雪荣
Owner JIANGNAN UNIV
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