No.5（2002）28.Development of crimped filament yarns produced from post-consumer poly (ethylene terephthalate) bottles

Kiyoshi YAMAMOTO, Katsuko HARASHIMA, Masahiro KATAGIRI and Hirokazu FURUTA

Poly (ethylene terephthalate) (PET) pellets produced from post-consumer PET bottles collected for recycling have been used as a component of side-by-side type bicomponent fibers. Crispation of the bicomponent filaments is generated by both the conventional melt spinning and drawing method, and the high-speed melt spinning method. After annealing at free end configuration in a 200℃ oven for 3min, curvature of the crimped filaments obtained by the conventional method decreases markedly. Birefringence and mean refractve index of each component were measured with an interference microscope, and the relationship between structure formation and crispation behavior was investigated.

Keywords
PET bottle, Crimped filaments, Side-by-side type bicomponent fibers, High-speed melt spinning, Birefringence

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