Filament Pre-tension in Core Yarn Friction Spinning

摘要

Core yarns are known to improve cotton yarn properties. In this research, core yarns are spun by introducing filaments under tension into the yarn-forming zone of an ex- perimental friction spinning apparatus. A 30-denier (3.3 tex) nylon monofilament and a black 75-denier (35f)nylon multifilament make up the core, and cotton fibers are used as the sheath. The effect of filament pre-tension on the structural parameters and mechanical properties of the core yarn is examined, and core yarn properties are com- pared with those of equivalent 100/100 cotton yarns. The photographic and fiber tracing methods are use dot consider the appearance of the yarns and the geometric position of the core in the core yarns.