Influence of rigid Cottonin's fibres on the quality of yarn and spinning process stability

Abstract

The small amount of rigid undeveloped fibers experimentally were proved to exist in the cottoned linen, that are discretely located along the length of yarn to form the local areas of high rigidity relative to the neighbouring areas, not containing such fibers. The applied coils of twist to the yarn during its formation are distributed along its length inversely proportional to its rigidity. As a result of the local areas of high rigidity of yarn are left slightly untwisted. The higher the rigidity of the yarn's local section is the less its twist and strength. The yarn with the strength less than its tension in the process of formation and winding will be broken. Therefore, the breakage rate in the yarn production process will increase. If the strength of yarn higher than its tension, the breakage will not happen, it may lead to formation of the piece of yarn with reduced strength and the yarn may have low average strength and high coefficient of strength variation.