| 摘要 |
PURPOSE:A polyester yarn that has thick and thin parts alternately where the thick parts are composed of specific monofilaments, thus showing good thick and thin effect in both appearance and color, and having novel types of form and properties. CONSTITUTION:The objective polyester slab yarn is obtained from a high-orientation polyester undrawn yarn with an optical birefringence of over 15X10<-3>, resulting from high speed spinning, thus having, in lengthwise direction, thick parts which are deeply dyeable and thin parts which is lightly dyeable alternately, where only the monofilaments constituting the thick parts have three-dimensional crimps and further have thick and thin parts in their cross section, further the optical birefringence of the monofilaments is higher than the undrawn yarn.
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