Flax scouring and bleaching refining process

Abstract

The invention discloses a flax scouring and bleaching refining process. The process specifically comprises the following steps: flax stems with the same diameter grade and color grade are selected, and are carded and put into a water bath, a sodium alkoxide solution is added for cooking for 2-3 h in hot water at the cooking temperature of 80 DEG C, formic acid is added to the water bath at the solution concentration of 4-7g / L, the temperature is kept unchanged, and water bath treatment is performed for 45-60 minutes; the flax stems are put into normal-temperature water to be washed, and then put into the water bath, bio-enzyme and xylanase are added, and boiling off is performed at 90 DEG C for 90 minutes; when the flax stems are soaked for 10-20 minutes, an optimal degumming effect can be achieved; and the degummed flax stems are soaked in 12 g / L hydrogen peroxide, 10 g / L caustic soda, 6 g / L urea and 2 g / L catalase at 110 DEG C for 60 minutes, the bleaching effect is achieved. According to the process, hydrogen peroxide is added to the formic acid solution to act, so that lignin residues can be effectively reduced, and linen fibers with high refining degree are obtained.

Description

technical field [0001] The invention relates to the technical field of flax treatment, in particular to a flax boiling, bleaching and thinning process. Background technique [0002] As a pure natural fiber, flax has the remarkable characteristics of sweat absorption, good air permeability and harmlessness to human body, and has been paid more and more attention in the clothing and textile industries. The flax roving bleaching process is the core of the flax factory production process. In order to obtain spinnable flax fibers, it must go through degumming. The roving bleaching is to remove some pectin and lignin in the fibers and improve the splitting degree of the flax fibers. Guarantee the necessary slippage between the fibers during the drafting of the spun yarn, so as to improve the quality of the flax spun yarn. With the proposal of the green textile concept, biological enzymes are gradually applied to the scouring of flax roving. Enzymatic scouring of flax roving has ...

AI Technical Summary

Problems solved by technology

[0003] It is necessary to remove the internal impurities through the degumming process to obtain pure flax fiber. At present, there is a lack of an effective boiling and bleaching process for flax. A kind of boiling, bleaching and refining process for flax is needed to solve this problem.