Successful Development Of Long 81.5Mm Hemp Fiber In China

According to Zhou Guotai, marijuana, because of its advantages of salt resistance, nitrogen fixation and almost no pests, is suitable for planting in China. If hemp textile can replace 20% of cotton textile, it will contribute greatly to the development of China's textile industry and the protection of cultivated land.

Wool type fiber requires more than 65mm fiber length and fineness below 5.5dtex, and the two must be ensured at the same time.

Hemp fiber is a kind of "craft fiber", which is composed of many hemp fibers which are glued together with pectin and lignin.

With the increase of fiber length, the number of single fiber, the content of pectin and lignin also increased, and the fibers became rough and hardened.

The project group innovatively proposed the two step softening technology, which combines the pectinase and softener, the progressive degumming technology combined with biology and chemistry, the two step hemp fiber combing technology combined with needle plate and card clothing, and developed the hemp fiber with a fiber length of 81.5mm and fineness of 4.6dtex. The wool / hemp blended yarn with hemp fiber content of 45% and wool fiber content of 55% was produced in batches. Wool / hemp blended yarn, Tencel / cashmere / hemp blended fabric and other fabrics were developed in batches to make hemp fabric richer.

Ji Guobiao, academician of the Chinese Academy of engineering, who has presided over the appraisal, believes that the project has formed a number of proprietary technologies with independent intellectual property rights, and the overall level has reached the international leading position.

The results are of great significance to the high quality application of renewable biomass fiber, the pressure to ease the shortage of fiber resources, and the sustainable development of textile industry.