Flax-wool blended yarn bleaching process

Abstract

The invention relates to a flax-wool blended yarn bleaching process. The weight percentage of flax in blended yarns is 50-90 percent and the weight percentage of wool in the blended yarns is 10-50 percent. The flax-wool blended yarn bleaching process is characterized in that the process sequentially comprises the steps of acid washing, water washing, two times of oxygen bleaching and final water washing, mixed solution which contains 2g / L hydrogen peroxide, 0.7g / L non-ionic penetrating agent, 4g / L sodium silicate, 1g / L oxygen bleaching stabilizer and 0.6g / L chelating dispersant is used in the oxygen bleaching process, the pH (potential of hydrogen) value of the mixed solution is adjusted to 8-9 by using 2g / L sodium carbonate solution, treatment is conducted for 1-2 hours at 70-75DEG C, and then bleaching is conducted for another time according to the same formula. The flax-wool blended yarn bleaching process has the advantages that not only can the flax fibers be well bleached, but also the wool fibers are not damaged, the processing flow is shortened and the energy is saved.

Description

technical field

[0001] The invention relates to a flax / wool blended yarn bleaching process, which is a production process for degumming and bleaching flax / wool blended rovings with hydrogen peroxide, and is mainly used in the production of the flax / wool blended yarn degumming process. Background technique

[0002] Flax fiber is a pure natural fiber with strong hygroscopicity, good heat dissipation and air permeability, anti-mildew and anti-moth, no static electricity, no chemical components, and a unique high-grade fiber that inhibits bacterial growth. However, due to the strong rigidity of the flax fiber, the fiber is thick and hard, which affects the wearing performance to a certain extent.

[0003] Wool is a protein fiber with a natural softness, which can be blended with linen to improve the softness of the yarn. But because wool and flax are two kinds of fibers with different properties, there is a big difference in the bleaching process. According to the characterist...