A chlorine-free mercerizing method for wool carpets based on the combined action of protease and mechanical force

Abstract

The invention relates to a chloride-free mercerizing method for wool carpets based on the joint action of biological enzymes and mechanical forces, which is characterized by comprising the processes of cleaning a wool carpet, carrying out protease treatment on the wool carpet, mechanically stripping scales, and carrying out protease inactivation and water washing; for improving the efficiency of hydrolyzing wool fibers by protease, an oxidation or reduction pretreatment process can be added before the process of protease treatment; and for endowing a finished wool carpet with a soft and smooth handfeel, a soft finish process is added after the process of carrying out protease inactivation and water washing on the wool carpet. The mercerizing method is based on the joint action of the reduction treatment of protease and external mechanical forces, through moderately stripping wool scales, a purpose of carrying out mercerized finish on wool fabrics is achieved, and excessive damages on wools just caused by the chemical action of protease and other chemicals and the pollution to the environment caused by a chlorination process are reduced.

Description

technical field [0001] The invention relates to the technical field of wool carpet mercerizing, in particular to a chlorine-free mercerizing method for wool carpets based on the joint action of protease and mechanical force. Background technique [0002] Compared with carpets made of other fibers, wool carpets have a luxurious appearance, fluffy texture, warm and elastic touch, and are a class of high-end indoor textile products. However, the structure of wool fiber is special, and there is a scale layer on the surface, which leads to the common disadvantages of wool textile products such as washing shrinkage, itching when wearing, and difficulty in dyeing. For wool carpets, if the wool fiber scales can be properly removed, the morphological stability of the carpet will increase during use due to the decrease in the fineness of the wool fibers and the decrease in the surface friction coefficient of the fibers, and the carpet will feel softer and smoother. , the luster is so...

AI Technical Summary

Problems solved by technology

The hydrolysis of the fiber by enzyme molecules first starts through the intercellular adhesion in the cell membrane complex (CMC) that runs through the entire fiber and extends to the surface, and then gradually diffuses and acts along the CMC to the inside of the fiber, thus causing the protease The weight reduction effect on wool is uneven and mainly occurs inside the wool fiber, rather than from the outside to the inside as expected, so relying solely on the hydrolysis of proteases may lead to severe degradation of the inside of the wool fiber, while the wool scales are still quite As a result, it is difficult to control the process of protease treatment on wool, and technical problems such as internal fiber damage and serious decline in strength are prone to occur, which also limits the application of protease reduction treatment in wool mercerizing process

At the same time, the inhomogeneity in the process of protease reduction treatment of wool and the difficulty in controlling the degree of protease hydrolysis are also an unresolved technical problem in the industrial application of protease reduction treatment in wool carpet treatment.

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