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The diameter and number of carded neps will directly affect the number of yarn neps and yarn defects, especially the number of A1, A2 yarn defects, and the sliver rate will directly affect the yarn strength, minimum strength, hairiness index H and Weaving warping ends. Carding should not only control the AFIS neps and short pile rate in the traditional sense, but also consider the carding state of the fibers, the neps diameter and the uniformity of the fibers.

Common problems of cotton cleaning

The gripper parameters of the gripper are adjusted frequently, and the efficiency of the gripper is low. The operating efficiency of the reciprocating cotton catcher is controlled at more than 90%. The gripping depth and speed can be determined according to the operating efficiency of the cotton catcher, and the descending depth can be adjusted reasonably to realize the opening of the gripper and the rib on the raw cotton, which further improves the opening effect of the cotton picker. It is necessary to strictly implement the grasping speed and depth determined by the process, and to prevent arbitrary adjustment of grasping cotton parameters.

Continuous cotton feeding is the key factor to ensure uneven sliver weight and mixing effect of raw materials, but also to ensure the stability of the cotton flow, the opening effect and the removal efficiency of cotton impurities and foreign fibers. According to the composition of cotton and seasonal changes, adjust the speed of each single cotton machine beater and the gap of cotton fall at the right time to control the growth rate of neps and short piles to a low level to ensure the effective removal of neps, impurities, short piles and foreign fibers To ensure the opening effect and mixing effect of raw cotton.

Carding FAQ

Spinning mills now tend to focus on the removal efficiency of neps and linters, but less on the cardability of the fibers. Although carded neps and linters are better, they may cause fiber damage due to excessive carding, and the quality of the yarn is not satisfactory. Carding is accomplished by carding elements. If the carding elements are not in good condition, the ideal carding effect cannot be achieved. The chain of the movable cover plate is elongated, the chain is not flexible, the wear of the heel toe surface of the movable cover plate and the fluctuation of the cover plate are common management problems of the enterprise. The wear of the heel of the cover plate and the undulation of the cover plate often cause inaccurate spacing, which can occur in both sliding friction and bearing-type rolling friction.
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