Regenerated polyester staple fiber and production process thereof

• Main Authors: WANG HONGXING, QIAN YANMING, SUN SHUAI, TAO YE
• Format: Patent
• Language: Chinese; English
• Published: 24.01.2023
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

The invention relates to the technical field of textile, and particularly discloses regenerated polyester staple fibers and a production process thereof. The regenerated polyester staple fiber is obtained by extruding and spinning a regenerated melt, the regenerated melt is obtained by melting a regenerated mixture, and the regenerated mixture is prepared from the following components in parts by weight: 20 to 24 parts of regenerated polyester, 2.2 to 2.6 parts of a swelling agent, 16 to 18 parts of polyester waste, 3.2 to 3.6 parts of isocyanate, 0.2 to 0.4 part of lithium silicate, 1.4 to 1.8 parts of a coupling agent and 4 to 6 parts of filler. Drying is carried out in the regenerated melt, and the step of drying the regenerated mixture is omitted, so that the total time for producing the regenerated polyester staple fibers is shortened, and the production efficiency of the regenerated polyester staple fibers is improved. 本申请涉及纺织技术领域，具体公开了一种再生涤纶短纤维及其生产工艺。所述再生涤纶短纤维由再生熔体经过挤出纺丝后得到，所述再生熔体由再生混合料熔融后得到，所述再生混合料包括如