Polyester multifilament blended yarn, fabric, method for manufacturing polyester multifilament blended yarn, and method for manufacturing fabric

Abstract

The invention provides a polyester multifilament blended yarn that can exhibit a sense of bulkiness and softness like that of natural fibers, a fabric, a method for manufacturing the polyester multifilament blended yarn, and a method for manufacturing the fabric. In a polyester multifilament blended yarn 1 obtained by interlacing at least two types of polyester multifilament yarns having different thermal shrinkage rates, the two types of polyester multifilament yarns include a false-twisted yarn 10 and a partially-drawn yarn 20, and both yarns are subjected to dry thermal shrinkage. Although large shrinkage occurs overall through thermal shrinkage, locations with different shrinkage amounts are mixedly present on a localized manner, and both yarns are unevenly exposed to the outside. Unevenness in the dyeing degree attributed to the differences in the shrinkage amounts in the longitudinal direction of the blended yarn, and unevenness in the dyeing degree attributed to differences in the degrees of orientation of both yarns are combined, and thereby a sense of uneven rippling is formed in the longitudinal direction of the blended yarn after dyeing, and color tones and textures like those of natural fibers are exhibited in the fabric.

Description

technical field [0001] The present invention relates to a polyester multifilament blended yarn and a fabric that can exhibit natural fiber-like swelling or softness, and a method for producing the polyester multifilament blended yarn and a fabric. Background technique [0002] In general, long-fiber synthetic fiber spinning is melt spinning of polyethylene terephthalate (PET) as a raw material. [0003] According to different pulling speeds or whether there is stretching, etc., the yarn produced in the spinning step is divided into drawn yarn (or oriented yarn, Fully Drawn Yarn: FDY), partially drawn yarn (or partially oriented yarn, Partially Oriented Yarn) : POY), undrawn yarn (Undrawn Yarn: UDY). [0004] In the spinning step, the stretched yarn and the partially drawn yarn are extruded from a spinning port with a plurality of fine holes, cooled by a cooler to form a plurality of filaments, and drawn by a plurality of rollers. The plurality of filaments described above ...

AI Technical Summary

Problems solved by technology

[0020] In the techniques of Patent Documents 1 and 2, there is a problem that the texture is limited to that of the false-twisted yarn, and the swelling feeling and softness unique to natural fibers cannot be fully expressed.

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