A SPINNING CONCEPT FOR PRODUCING WOOLEN CARPET YARNS DIRECTLY FROM CARD SLIVER .1. THE DISC-RING SPINNING PROCESS

A new ring spinning concept is described, termed ''disc-ring spinning, '' which enables woolen yarns to be produced directly from a carded sl iver feed. Experiments are undertaken on a single spindle machine in o rder to elucidate the importance of the various design variables of th e spinning system to the stability of the process and the properties o f 100% wool yarns. High speed photography is used to study the changes in the configuration of fibers during the spinning process, which wil l determine the structural characteristics of a woolen yam. The result s of the work show that disc-ring spinning offers the opportunity for carpet yarn manufacturers to dispense with a condenser at the woolen c ard, with the benefit of a more cost-effective production process.