Scouring and bleaching technology for combining flax roving pretreatment and ozone bleaching

Abstract

The invention discloses a scouring and bleaching technology for combining flax roving pretreatment and ozone bleaching. The technology comprises the main steps of pretreatment, ozone bleaching, washing, oxygen bleaching and washing. Due to the fact that for raw materials with high pectin and lignin content in flax fiber, pretreatment aims at hydrolyzing pectin, lignin and acid into pectin acid, iron and metal ions in fiber can be removed, and the ions react with alkali to achieve degumming. By combining pretreatment and ozone bleaching, on the premise that the requirement for the spun yarn spinning technology is met, and spinnability and oust indexes are remarkably improved. The whole process is easy to control, no contamination is generated, the cost is low, the product quality is stable,the modern life idea for green flax and the requirement for low-carbon economy are met, and therefore the important theoretical significance and application value are achieved.

Description

technical field [0001] The invention relates to the technical field of spinning in the flax textile industry, in particular to the boiling and bleaching process of spinning 24 yarns (1.8 rovings) of long flax spun yarn. Background technique [0002] Flax is a herbaceous plant, which can be divided into three types: flax for fiber, flax for oil and flax for both oil and fiber. Flax is the earliest natural plant fiber used by human beings. Because of its remarkable characteristics of sweat absorption, good air permeability and harmlessness to human body, it has been paid more and more attention by human beings. There are impurities such as pectin and lignin in flax fiber, which brings a lot of inconvenience to its primary processing and dyeing and finishing processing. How to remove the impurities on the fiber and minimize the damage to the flax fiber has always been a concern of textile dyeing and finishing workers. However, the scouring and bleaching process of flax roving...

AI Technical Summary

Problems solved by technology

However, the scouring and bleaching process of flax roving is a chemical processing process in the spinning process. The main purpose is to increase the splitting degree of flax fiber and increase the number of spinnable yarns of flax fiber. , but it has a certain negative impact on the natural performance of the product. The existence of most of the impurities seriously affects the processing and wearing performance of the flax fiber, resulting in low dyeing fastness of the flax fiber, low color purity, and high rigidity of the yarn, which is easy to produce Yarn breakage, so the entire cooking and bleaching process is very important for the later processes of spun yarn spinning, primary processing, dyeing and finishing