Bulked nitrile polyester yarn has excellent thermal extensibility and is suitable for making bulky yarn, wool, knitted fabric and artificial fur and other products. After its performance, acrylic fiber is soft to the touch, easy to dye, and bright in color. The elasticity is not as good as wool, polyester and other fibers, especially after repeated stretching, the residual deformation is large. Therefore, the cuffs and necklines of clothes made of acrylic fibers are easily deformed. The hygroscopicity of acrylic fiber is lower than that of nylon, and it is easy to generate static electricity and pilling. Acrylic fiber has low thermal conductivity and light texture, so it has good heat retention, and at the same time has excellent sunlight resistance, anti-moth and mold, and is widely used in knitted clothing. Can be dyed with disperse dyes, cationic dyes and acid dyes.

Bulk acrylic skein is the trade name of the fiber in my country, and it is called "Olon" and "Cashmilon" in foreign countries. It usually refers to the synthetic fibers obtained by wet spinning or dry spinning with a copolymer of 85 or more and a third monomer. Fibers made by spinning copolymers with a content between 35 and 85 are called modified fibers. The performance of the fiber is like wool, the elasticity is good, the rebound rate can still be maintained at 65 when the elongation is 20, it is fluffy, curly and soft, and the warmth retention is 15 higher than that of wool, which is called synthetic wool. Strength 22.1~48.5cN/tex, 1~2.5 times higher than wool. Excellent light fastness, one year exposure in the open air, the strength is only reduced by 20, it can be made into curtains, curtains, tarpaulins, gun coats, etc. It is resistant to acids, oxidants and general solvents, but poor alkali resistance. Fiber temperature 190 ~ 230 ℃.

Acrylic dyed yarn fiber is called artificial wool. It has the advantages of softness, bulkiness, easy dyeing, bright color, light resistance, and not afraid of insects. According to the requirements of different uses, it can be spun pure or blended with fibers. Its textiles are widely used in clothing, decoration, industry and other fields. Poly fibers can be blended with wool to make wool, or woven into blankets, carpets, etc., and can also be blended with cotton, man-made fibers, and synthetic fibers to be woven into various clothing materials and interior products.