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    TEXTURED POLYESTER YARNS AND PROCESS FOR THE PRODUCTION THEREOF
    2.
    发明专利
    TEXTURED POLYESTER YARNS AND PROCESS FOR THE PRODUCTION THEREOF 未知

    公开(公告)号：CA1050366A

    公开(公告)日：1979-03-13

    申请号：CA254321

    申请日：1976-06-08

    Applicant: TORAY INDUSTRIES

    Inventor： NAKAGAWA KIYOSHI ,  OTAKI YUKIO ,  MINEO MASATOSHI ,  ARATANI YOSHIO ,  TATSUOKA YOSHIO ,  KUSAKABE HARUHIKO

    IPC: D02G1/02 ,  D01H7/00

    Abstract: TEXTURED POLYESTER YARNS AND PROCESS FOR THE PRODUCTION THEREOF A textured polyester yarn having improved variation in dyeability along its length is composed of a plurality of individual filaments each having thick and thin sections randomly distributed along the filament axis, said yarn having an Uster evenness value of 1.0 to 10.0%, a T index of 3 to 30 and a variation in reflected light intensity in a continuous dyeing test of +0.15 to +0.80 and said yarn preferably having not-untwisted. portions containing genuine twists of a fixed direction intermittently retained at random along its length. The yarn is produced by false twisting a polyester yarn composed of a plurality-of individual filaments each having variation in cross-sectional area along its length, in which the thick sections have a birefringence of 15 to 80x10-3 and the thin sections have a birefringence of 90 to 200x10-3, at a temperature of not lower than 180.degree.C and under a twisting tension of 0.05 to 0.8 g/d with a variation with respect to the average twisting tension of +5 to +20%.

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