Abstract:

To analyze the influence of inner structural changes on composite yarn properties during the varied filament composite spinning by changing the filaments and the roving positions, six different structures of composite yarn models were systematically designed and built to analyze and predict the properties of the corresponding yarns. Different structural composite yarns were produced experimentally to verify the composite yarn models. Different composite yarn properties including hairiness, evenness and tensile properties were compared and analyzed. The results show that the composite yarn with filaments wrapping from both sides of the strand had better evenness and higher tenacity than that of yarns with single core-filament spun structure. When the composite yarns had both bilateral wrapping and core-filament structures, an optimized yarn strength and evenness are owned. The increased filament tension and filament-strand spacing could effectively enhance the short fiber control and reduce composite yarn hairiness.

Key words: filament composite spinning, yarn structure model, yarn property, filament distribution, bothbilateral wrapping structure