Heat preservation technology for continuous dip bleaching stage of one bath one step method for cotton fabric and cotton blended fabric

Abstract

The invention discloses a heat preservation technology for a continuous dip bleaching stage of a one bath one step method for cotton fabric and cotton blended fabric. According to the heat preservation technology, based on the prior art, a structure comprising a boiling box and a washing machine is improved to a sealed drum structure with an impeller so that the fabric can be fully spread and will not cluster or gather or form a pile in the processing process, and the boiling off effect and the blenching effect are good; the fabric is boiled and blenched at a low temperature firstly and then boiled and blenched at a high temperature, so that the decomposition rate and the decomposition products of hydrogen peroxide are effectively controlled, various kinds of processing liquid flow in the direction opposite to the movement direction of the fabric in a drum, and therefore the processing effect is further improved; through the continuous production mode, the good boiling-off effect and the good blenching effect are achieved, the degree of oxidative damage to fibers is reduced to the greatest extent, the production efficiency is high, the consumption of water, electricity and steam is low, technical control is simple, adjustment is convenient, and flexible production can be achieved.

Description

technical field [0001] The invention relates to a soaking and bleaching stage heat preservation process, in particular to a one-bath and one-step continuous soaking and bleaching stage heat preservation process for cotton and its blended fabrics, belonging to the technical field of textile dyeing and finishing. Background technique [0002] Cotton spinning or cotton blended fabrics are scoured and bleached with hydrogen peroxide, caustic soda, etc. and bleached in one bath. There are two main production processes: padding bleaching and soaking bleaching. The former is a continuous production method, and the latter is generally For batch production. [0003] Roll bleaching equipment is expensive, bulky, requires relatively high installation space, and consumes a lot of energy during the production process. [0004] In the prior art, the leaching and bleaching methods all adopt intermittent production methods, which have low production efficiency, poor product quality stabili...

AI Technical Summary

Problems solved by technology

[0003] Rolling and bleaching equipment is expensive, bulky, requires relatively high installation space, and consumes a lot of energy during the production process

[0004] In the prior art, the leaching and bleaching methods all adopt intermittent production methods, which have low production efficiency, poor product quality stability, large water, electricity, steam consumption and sewage discharge, and high labor intensity and labor. insufficient

[0005] More critically, the batch production method in the prior art, due to the structural form of the equipment, the rationality of system integration and the matching of the process on this basis, leads to the high-temperature alkali in the production process. Under harsh conditions, the decomposition reaction rate of hydrogen peroxide and the products produced cannot be effectively controlled, so the high stability of the scouring and bleaching effect cannot be guaranteed, and the damage to the fiber can be minimized

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