Datetime:2021-12-13 16:55:36  

JIN Hairong  YU Yinjun  HE Xiaoling  LIU Qianli

（Jiangsu Lianfa Textile Co.，Ltd.，Nantong，226600，China）

    Abstract  Design of spinning technology and selection of key equipment to improve shape retention of pure cotton compact yarn fabric were discussed.Through optimization of compact spinning key equipment，improvement of yarn properties was achieved.By changing ratio of long-staple cotton，spinning method and twist factor，shape retention of the fabric was analyzed.The test results showed that using original combined type special negative pressure groove for compact spinning，combined with the Shore A68 degree drafting rubber-covered roll and balloon ring，the spun yarn had better comprehensive index and property of compact yarn was improved.When the blending ratio of long-staple cotton and medium cottton was 90/10，twist factor of the blended yarn was 385，shape retention effect of woven fabrics made by the compact yarn was better.