Enzyme oxidation pre-processing technology for hemp fabric

Abstract

The invention discloses enzyme oxidation pre-processing technology for hemp fabric. The enzyme oxidation pre-processing technology which is used for processing the hemp fabric after desizing and singeing and before mercerizing and dyeing comprises the steps of enzyme padding, rolling stack and scouring, wherein one liter of the enzyme solution for the enzyme padding process is prepared from 4 grams scouring agent xc-j, 20 grams of hemp scouring agent, 30 grams of 27.5 percent H2O2 and 6 to 8 grams of KDN scouring enzyme with pH value of between 8.7 and 9.7 at the temperature of between 55 and 60 DEG C according to a formula; and one liter of the scouring solution for the scouring process is prepared from 20 grams of hemp scouring agent, 20 grams of bleaching agent and 30 grams of 27.5 percent H2O2. The technology has the advantages of short process, mild condition, low cost of raw materials, low COD and AOX value in wastewater, environmental friendliness and capability of efficiently removing various impurities and commensals on the hemp fabric by combining a bio-enzyme catalysis process and an oxidation bleaching process and obtaining high-quality pre-processed surface fabric to create good conditions for the subsequent dyeing and finishing process.

Description

technical field [0001] The invention relates to a pre-dyeing and finishing process of linen fabric and its blended fabric, in particular to a pre-treatment process of enzyme rolling, rolling and stacking, and scouring and bleaching of the linen fabric and its blended fabric. Background technique [0002] At present, hemp and its blended fabrics are pre-dyeing and finishing by conventional desizing, scouring, and chlorine-oxygen double bleaching. Since this process does not clean the hemp skin, which greatly reduces the whiteness and wool effect of the fabric, and affects the subsequent dyeing and finishing process, it is generally necessary to use the "chlorine bleaching" process that is prohibited by the state to remove the remaining residue on the cloth surface. Mapi. Generally speaking, the existing pretreatment process method has long process, low efficiency, large consumption of energy such as water, steam, electricity and related chemicals such as caustic soda, high p...

AI Technical Summary

Problems solved by technology

Generally speaking, the existing pretreatment process method has long process, low efficiency, large consumption of energy such as water, steam, electricity and related chemicals such as caustic soda, high production cost, and COD (chemical oxygen demand) in industrial wastewater ) value is very high, especially the use of sodium hypochlorite in the process of "chlorine bleaching", which not only aggravates the pollution and damage of AOX (adsorbable halide) in wastewater to the ecological environment, but also causes direct damage to the health of operators !

[0003] In view of the above technical problems, Chinese patent 200910098794.9 discloses a pre-treatment process of flax fabrics with enzymatic enzymatic stacking, which adopts biological enzyme catalyzed treatment to remove the attached impurities and symbionts on the hemp fabrics, which has great technical progress compared with the traditional treatment methods However, the formula of the enzyme solution is too simple, and the pretreatment effect on the hemp fabric is even worse than that of the traditional process, which cannot meet the requirements of production and application, especially the production requirements of high-grade fabrics

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