Into the late 1980s, High-count, lightweight wool products in the market has become a hot spot. The momentum is fast. The weight of men's fabric has been reduced by about 20% to 30%, the weight of women's fabric has been reduced by 10% to 15%, and the quality of wool has been increased from 64/66 to 66/70. For high-count lightweight products, in addition to the use of chemical fiber blending to increase the number of spinning, pure wool products use more than 70 ultrafine wool. According to the information of the International Wool Bureau, the average diameter of less than 19μm of wool production accounted for only 5.44% of the total output of Australian wool, while 20~30μm of wool production accounted for 66.6% of the total output, the price difference between the two is more than 50%. Therefore, the use of ultrafine wool spinning high-count lightweight products, not only the number of raw materials is small and expensive.
In order to solve this problem, we use a new type of polyvinyl alcohol (PVA) fiber, that is, water-soluble fiber, mixed with medium-fine wool, after finishing to remove the PVA fiber in the fabric, the same use of ultrafine wool spinning High-count, lightweight products, and the cost is low.
The removal of PVA fibers should be carried out before finishing the fabric. That is, the PVA fiber is removed in hot water first, and then other finishing. Since wool can not be treated at high temperature for a long time, the lower the dissolution temperature of the selected PVA fiber, the better, but according to the process of producing PVA fiber in the chemical fiber factory, the dissolution temperature is reduced, the fiber strength is reduced, and the spinning break is increased, and the fiber strength can meet the spinning requirements when the water solubility temperature is 70~80° C, the spinning break is low.
For the PVA fiber in the fabric, because the infiltration of water molecules is from the surface to the inside, the PVA fiber on the surface of the fabric is first dissolved, and then the PVA inside the fabric is dissolved. Removing the PVA fiber inside the fabric is more difficult than removing the loose fiber, and the water temperature must be higher than its dissolution temperature. The bath ratio is larger and longer.
PVA fiber and wool mixed spinning thin products process route:
PVA fiber Strip & Wool strip - Mixed strip a pre-spinning - post-spinning → Weaving → post-finishing (removing PVA fiber)→ pure wool high-count lightweight products.
Website: www.elephchem.com
Whatsapp: (+)86 13851435272
E-mail: admin@elephchem.com
ElephChem Holding Limited, professional market expert in Polyvinyl Alcohol(PVA) and Vinyl Acetate–ethylene Copolymer Emulsion(VAE) with strong recognition and excellent plant facilities of international standards.
IPv6 network supported