Process and optimization of carding process of pure super-short cashmere on worsted system

In order to make a technical breakthrough in that the pure super-short cashmere with a length less than 30 mm can be spun into worsted tops on a worsted system,the orthogonal experimental was conducted and trial spinning of the pure super-short cashmere was performed on the worsted system. The optimal carding process conditions for the pure super-short cashmere were determined as follows: a pair of working rolls / stripping rolls for opening; two pairs of working rolls / stripping rolls for breast cylinder; four pairs of working rolls / stripping rolls for big cylinder; respectively,and Moller vegetable impurity removal was not employed. In addition,the tooth density of cylinder wire cloth and doffer wire cloth was61. 7 teeth / cm2and 62. 5 teeth / cm2,respectively,and top production was 8 g/m. The results demonstrated that the average loss of fiber length of the super-short cashmere tops derived from the optimal process were less than 0. 5 mm,and the number of the neps was smaller than 16 per gram,thus meeting the requirements for production of high-count yarns in the follow-up process.