Bleaching and degreasing boiling method for pure cotton fabric

Abstract

The invention relates to the pure cotton nonwoven fabric production technology, in particular to a bleaching and degreasing boiling method for pure cotton fabric. The method includes: winding the pure cotton fabric, placing into a sealed container, and washing; sucking dissolved tea saponin or modified tea saponin into the container in a high-pressure manner, and stirring along with the fabric; sucking dissolved hydrogen peroxide into the container in a high-pressure manner, and stirring; after the temperature of the solution in the container rises, dissolving caustic soda flakes, sucking the dissolved caustic soda flakes into the container in a high-pressure manner, and stirring; performing programmed heating, performing circulating washing on the fabric, and directly discharging the solution; adding water into the container, performing hot washing, and directly discharging the solution; using citric acid monohydrate to wash the fabric, and directly discharging the washing liquid. The method has the advantages that the tea saponin or modified tea saponin is used as the bleaching and degreasing additive of the fabric, specific process procedures and process conditions are adopted, degreasing reagents can be saved, degreasing time can be reduced, and the obtained pure cotton nonwoven fabric is excellent in antibacterial performance.

Description

technical field [0001] The invention relates to a pure cotton non-woven fabric manufacturing technology, in particular to a method for bleaching and then degreasing and scouring pure cotton fabrics. Background technique [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 need to be produced in the production process. In addition, it is necessary to degrease before bleaching in the rinsing 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 ...

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.