One-step leaven washing method

A step-by-step enzyme and enzyme technology, which is applied in the field of denim reconditioning and washing process, can solve the problems of difficulty in popularization and application and long process, and achieve excellent anti-restaining performance, simplify the washing process, and shorten the washing time.

Inactive Publication Date: 2010-04-21
南京川平科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there have been many washing enzymes at home and abroad, but there are many common problems: the process is long, and it needs to be desized before washing.
However, according to the introduction of the company, the price of the trial product they developed is more than 20% higher than that of conventional products, and it is difficult to popularize and apply it. So far, there has not been any report on the sale of this product in the Chinese market.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add water to 1 kg of jeans at a bath ratio of 1:12, add 1.4% (o.w.f) washing enzyme, heat up to 50°C, wash at a constant temperature for 45 minutes, drain, add water, calculate the total volume, add additives at 0.01-0.02g / l, and wash 10min, take the clothes and spin dry, dry; the washing enzyme used is produced by Nanjing Chuanping Science and Technology Development Co., Ltd.; the washing method used can be enzyme water washing or enzyme stone mill washing, and the pH of the water used is 7.2, without adding acetic acid to adjust, so The auxiliary agent described is sodium carbonate. After the water washing, compared with the denim clothes washed with the current two-step process, there is no difference in the aspects of returning to the old, blooming, anti-re-staining and hair removal, and there are no streaks. The finishing quality of denim is good, and a good cost saving effect has been achieved, see the table below for details

[0024] Comparison of production cos...

Embodiment 2

[0031] Add 1.8% (o.w.f) washing enzyme to 1 kg of jeans at a bath ratio of 1:17, raise the temperature to 50°C, wash at a constant temperature for 40 minutes, drain, add water, and add additives at 0.01-0.02 g / l to calculate the total volume, and wash for 10 minutes , take the clothes, spin dry, and dry; the washing enzyme used is produced by Nanjing Chuanping Technology Development Co., Ltd. The washing method used can be enzyme water washing or enzyme stone mill washing. The pH of the water used is 6.8-7.0, without adding acetic acid to adjust, Described auxiliary agent is sodium carbonate. After washing in water, compared with the jeans washed with water by the current two-step process, there is no difference in the aspects of aging, flowering, anti-restaining and hair removal. There are no spots and stripes, and the denim The finishing quality of the cloth is good, and good economic results have been achieved, see the table below for details

[0032] Comparison of product...

Embodiment 3

[0038] Add water to 1 kg of jeans at a bath ratio of 1:20, add 2.6% (o.w.f) washing enzyme, heat up to 50°C, wash at a constant temperature for 40 minutes, drain, add water, calculate the total volume, add additives at 0.01-0.02g / l, and wash 10 minutes, take out the clothes, spin dry, and dry; the washing enzyme used is produced by Nanjing Chuanping Technology Development Co., Ltd. The washing method used can be enzyme water washing or enzyme stone mill washing. The pH of the water used is 6.5-7.0, without adding acetic acid to adjust , the auxiliary agent is sodium carbonate. After washing in water, compared with the jeans washed with water by the current two-step process, there are no spots and streaks, and the finishing quality of the denim is good, which has achieved good results. Economic effects, see the table below

[0039] Comparison of production costs between traditional process and one-step process

[0040]

craft

processing time

/ min ...

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PUM

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Abstract

The invention relates to a washing process for worn-out finishing of denims, in particular to a one-step leaven washing method. In the one-step leaven washing method, when the bath ratio of 1 weight part of cloth to water is smaller than 1:15, the adding dosage of a washing leaven is 1.0 to 1.8 percent (o.w.f); or, when the bath ratio of 1 weight part of the cloth to the water is between 1:20 and 1:30, the adding dosage of the washing leaven is above 2.5 percent (o.w.f); or, when the bath ratio of 1 weight part of the cloth to the water is between 1:15 and 1:20, the adding dosage of the washing leaven is 1.8 to 2.5 percent (o.w.f); and after finishing the material adding, the method comprises the steps of raising the temperature to between 40 and 60 DEG C, performing constant temperature washing for 40 to 90 minutes, draining, adding clear water, adding an auxiliary agent in a ratio of 1-2 grams per liter, performing washing for 10 to 15 minutes, and performing dewatering and drying. The one-step leaven washing method effectively overcomes various difficulties in the production by a two-step method, can perform desizing and washing in one step, namely finish the desizing and the washing through one step, achieves process innovation, can change the present status of the prior production process, and is favorable for saving energy and water, improving the working efficiency and reducing the cost; besides, the product selling price can be matched with the price of the conventional washing leaven in the prior market, so the method has a good application and popularization prospect.

Description

1. Technical field: [0001] The invention relates to a washing process for denim fabric reverting and finishing, in particular to a one-step washing method using an enzyme. 2. Background technology [0002] Since the 1980s, the denim washing process has been gradually replaced by enzyme washing. So far, existing numerous washing enzymes come out both at home and abroad, but all there are many common problems: the process is long, and it will be processed through desizing before washing. Commonly used desizing methods are: alkaline method, warming water treatment method or amylase desizing method, etc. Obviously, this will cause defects such as long washing time, large water consumption, high power consumption, and high cost. As early as 2005, relevant experts from Novozymes, a world-renowned manufacturer of enzyme preparations in Denmark, had proposed to develop a one-step water washing process of denim enzymes that combines desizing and washing, and clarified many aspects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06L1/12D06L1/14C12S11/00
Inventor 王传槐王汉忠
Owner 南京川平科技开发有限公司
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