HIM Polyester Yarn

The linear speed ratio of the cylinder and the spur roller should be properly increased to facilitate the smooth transfer of fibers. In addition, the relative temperature and humidity of the carding process should be relatively large, generally 65% ​​to 70%. After many tests and optimization of the carding machine process parameters, the main process parameters of the carding process are as follows: cylinder speed 330 r/min, spur roller speed 750 r/min, doffer speed 18r/min, cylinder and cover

The gauge of the board is 0.27, 0.25, 0.24, 0.24, 0.25mm, and the sliver weight is 21g/5m. 3.3 Drawing process In order to ensure uniform color mixing and accurate blending ratio, we adopt three drawing processes. In order to better improve the straightness and parallelism of the fiber, we adopt the 'head big end small' smooth drafting, the head is combined with a larger back The draft multiple, and the smaller rear draft multiple is adopted at the end.

Taking into account the long wool fiber and the serious electrostatic phenomenon of dyed viscose, it is easy to wind the rubber roller and roller. The following measures are adopted: ①Increase the environmental humidity of the drawing process; ② Reduce the speed of the draw frame and enlarge the roller gauge to improve the level of sliver; ③Use anti-winding rubber rollers to reduce the occurrence of roller entanglement; ④Clean the loop holes regularly and clean the surface of the rubber roller with antistatic agent. The main process parameters of the drawing process are shown in Table 1 and Table 1.

The process HIM Polyester Yarn of the drawing process 3.4 The roving process is based on the performance characteristics of these types of fibers. The roving process should adopt 'large gauge, heavy pressure, small basis weight, small tension, small twist 'Coefficient, larger rear zone draft and larger jaw spacing' process principles. In order to increase the grip and prevent the strip from winding the roller and the drawing rubber roller due to static electricity

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