A method for bleaching pure cotton fabric and then degreasing and scouring

Abstract

The invention relates to a technology for manufacturing pure cotton non-woven fabrics, in particular to a method for bleaching and then degreasing and scouring pure cotton fabrics. After the tea saponin or modified tea saponin is compounded, it is sucked into the container under high pressure and stirred with the material; the hydrogen peroxide compound is sucked into the container under high pressure for agitation; after the solution in the container is heated up, the flake alkali is compounded and stirred under high pressure. Inhale into the container for stirring; carry out temperature program, wash the material in a circular manner, and discharge directly; add water to the material in the container, perform hot washing, and discharge in a straight line; use citric acid monohydrate to wash the material and discharge it in a straight line, that is, to complete the pure cotton The fabric is bleached and then degreasing. In the method provided by the invention, tea saponin or modified tea saponin is used as an additive agent for bleaching and refining, and with specific process sequence and process conditions, not only can the degreasing agent be saved, but the degreasing time can be reduced, and the obtained pure cotton non-woven fabric has Excellent antibacterial properties.

Description

Technical field [0001] The present invention relates to cotton nonwoven fabrication techniques, and more particularly to a prior bleaching method of cotton fabrics. Background technique [0002] Currently, in the field of thin nonwoven product, the boiling drift of cotton fabric needs to be added more reagents, including chemical reagents such as penetrant, stabilizers, chelating agents, refining agents, including penetrating agents, and these reagents require batch. Adding, there is a need to produce more process steps in the production process. In addition, it is necessary to make skimmed and then bleached during cooking, otherwise it will reduce the efficiency of bleach bleaching. And the existing cooking process is also insufficient on the sterilization effect of the fabric itself, in order to achieve a sterilization standard, a high temperature or additional sterilization process is required. Inventive content [0003] In order to solve the problem in the above background, ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the application field of thin nonwovens, the scouring and bleaching of pure cotton fabrics requires the addition of more reagents during the scouring process, including chemical reagents such as penetrants, stabilizers, chelating agents, and refining agents. These reagents need to be processed in batches. In addition, more process steps are required in the production process. In addition, it is necessary to degrease and then bleach during the scouring process, otherwise the efficiency of hydrogen peroxide bleaching will be reduced.

However, the existing bleaching process is also insufficient in the sterilization effect on the fabric itself. In order to achieve the sterilization standard, high temperature or additional sterilization process is required.