TENSION VARIATIONS DURING CONE WINDING ON AN OPEN-END SPINNING SYSTEM

The two main criteria for successful high speed yarn winding with no y arn failure are maintaining yarn tension variations at a level suffici ently high to achieve package stability while at the same time keeping tension fluctuations to a minimum. Their importance arises from the f act that uneven tension causes uneven package density, which in turn r esults in unevenness in subsequent technological processes such as dye ing, knitting, weaving, etc. Therefore, to manufacture a package with acceptable quality features such as stability, constant density, const ant package stiffness, etc., the yarn winding tension must be controll ed during winding operations.