Low-temperature pretreatment process of full-cotton woven fabric

Abstract

The invention relates to a continuous type low-temperature boiling-off and bleaching pretreatment process of full-cotton woven fabric. At present, the low-temperature boiling-off and bleaching of pre-treatment process exists, but are only the pre-treatment processing process for cotton and blended knitted fabric; research findings or patent documentation of pre-treatment process taking low-temperature boiling-off and bleaching of full-cotton woven fabric are not found at present. In the invention, hot water pre-treatment processing, biological enzyme processing, hot water washing and enzyme blanching and water washing process are firstly preformed on the full-cotton woven fabric, and then the low-temperature scouring and bleaching processing, the low-temperature steam bleaching processingand the water washing process are then performed to finish the pre-treatment of the cotton woven fabric. In the invention, the cotton woven fabric is pre-treated in combination with biological enzymedesizing and the low-temperature scouring and bleaching; the technology in the invention has a good effect without sizing agent residuals and residual cotton seed hulls, and the brightness achieves the effect of the traditional soda boiling and oxygenation bleaching technology.

Description

technical field [0001] The invention relates to a pretreatment technology for textile printing and dyeing, in particular to a continuous low-temperature scouring and bleaching pretreatment process for cotton woven fabrics. Background technique [0002] Cotton fiber contains natural impurities such as 0.4-1.2% pectin, 0.4-1.2% wax, 1.0-1.9% protein, 0.7-1.6% ash and a small amount of pigment, which is called the symbiosis of cotton fiber. These impurities mainly exist in the cuticle and primary cell wall of cotton fiber. In addition, due to the sizing of the warp yarns in the weaving process, additional impurities such as sizing agent, antistatic agent, and lubricant are brought to the fabric. The presence of these impurities seriously affects the wettability of cotton fibers, making cotton fibers hydrophobic, thus affecting the dyeing and finishing processes of cotton fibers. Therefore, the first step in the dyeing and finishing of cotton textile products is to pre-treat t...

AI Technical Summary

Problems solved by technology

[0009] Such as U.S. Patent UPS.6743761 (2004.6.11) and UPS.6830591 (2004.12.14), the above two patent documents use hydrogen peroxide bleach activator nonanoyloxybenzenesulfonate (NOBS) or tetraacetamide (TAED) , because these two kinds of hydrogen peroxide bleaching activators can intensify the effective decomposition rate of hydrogen peroxide bleaching, greatly reduce the hydrogen peroxide decomposition temperature, thereby reducing the use temperature of hydrogen peroxide bleaching, the above patent documents only solve the difficulty of hydrogen peroxide bleaching at low temperature, and do not solve the problem of low temperature bleaching. The difficulty of scouring makes it even more impossible to realize the three-in-one (same bath) low-temperature pretreatment of cotton retreating, boiling and bleaching

And Chinese patent CN0710039660.0 "low-temperature scouring and bleaching agent and its preparation method and pretreatment process" and CN0810122028.7 "one-dose solid auxiliary agent for one-bath low-temperature scouring and bleaching process of cotton knitted fabrics" have realized pretreatment The low-temperature scouring and bleaching process, but only for the pre-treatment process of cotton and blended knitted fabrics

[0010] However, the research results or patent literature on the pretreatment process aimed at low-temperature scouring and bleaching of cotton woven fabrics have not yet been found.