The "coil effect" of the draw frame is a common and frequent problem in the pre-spinning drawing process The coiling effect wave can be eliminated naturally in the tension drafting of the later process. Although it does not affect the quality of the yarn, it makes the calculation value of the drawin...

Control measures when occasional yarn defects and frequent yarn defects are not high and the DR% value (±20%, 0.01m) is high Sometimes we will find that the occasional and frequent yarn defects are not high in the test, but the evenness CV% is high. At this time, if the DR% value (±20%, 0.01m) is te...

When there are many frequent yarn defects and the DR% value (±20%, 0.01m) is too large, the control should be strengthened mainly from the aspects of raw materials, process parameters, mechanical conditions, operation management, temperature and humidity. In terms of raw materials, spinning material...

Raw material yarn defects are mainly caused by occasional yarn defects caused by poor raw material length uniformity, large difference in fineness, high short-staple rate, low maturity, neps, leaf chips, cotton seed hulls, and high fiber-bearing seed chips. The control of raw material yarn defects s...

Electronic yarn clearer is the last pass to reduce yarn defects and ensure yarn quality. The setting of the process parameters of the electronic clearer not only affects the final quality of the yarn, but also a direct factor affecting the production efficiency of the winder. Therefore, the setting ...

1. The characteristics of knitting engineering and its requirements for yarn thickness and detail Knitted fabric is made by using knitting needles to turn each yarn into a loop, and then weaving the loops in tandem. The structure of knitted fabric is loose, and there are more gaps inside the yarn lo...