Characteristics and Sizing Process of Pure Spinning Regenerated Cellulose Fiber Yarn
In order to improve the sizing quality of regenerated cellulose fiber yarn,the differ-ences in chemical composition,microstructure and physical indexes of viscose,lyocell,modal and bamboo pulp fibers,as well as the corresponding compact spinnning yarn indexes and fabric specifications are analyzed and compared.The main sizing parameters,such as solid content,viscosity,sizing rate,elongation,temperature and moisture recovery rate are determined by comparative test,and the technical difficulties and sizing quality indexes are analyzed.It is pointed out that the microstructure and physical properties of different cellulose fibers are dif-ferent.Under the sizing conditions of high pressure,high temperature and wet heat,appropriate technological parameters should be taken according to the fiber composition and yarn count to ensure the stable sizing quality,smooth weaving and good fabric quality.
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