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    23.
    发明专利
    未知

    公开(公告)号：DE60228656D1

    公开(公告)日：2008-10-16

    申请号：DE60228656

    申请日：2002-07-29

    Applicant: TORAY INDUSTRIES

    Inventor： OCHI TAKASHI ,  SAKAI TAKAAKI ,  MAEDA YUHEI

    IPC: D01F6/62 ,  D01F6/92

    Abstract: A poly(lactic acid) fiber has a strength at 90 DEG C of equal to or more than 0.8 cN/dtex and exhibits significantly satisfactory mechanical properties at high temperatures as compared with conventional poly(lactic acid) fibers.

    24.
    发明专利
    未知

    公开(公告)号：DE60039413D1

    公开(公告)日：2008-08-21

    申请号：DE60039413

    申请日：2000-11-15

    Applicant: TORAY INDUSTRIES

    Inventor： MOCHIZUKI KATSUHIKO ,  SUGANO KOJI ,  MAEDA YUHEI

    IPC: D02G3/02 ,  D01F6/62 ,  D02G1/02 ,  D02J1/08 ,  D03D15/00

    Abstract: The present invention relates to polyester yarn which is characterized in that it is a multifilament yarn substantially comprising polytrimethylene terephthalate, and as well as the strength from the stress-strain curve being at least 3 cN/dtex and the Young's modulus being no more than 25 cN/dtex, the minimum value of the differential Young's modulus at 3-10% extension is no more than 10 cN/dtex and the elastic recovery following 10% elongation is at least 90%. Furthermore, said polyester yarn can be obtained by a method of producing polyester yarn which is characterized in that multifilament yarn obtained by the melt spinning of polymer substantially comprising polytrimethylene terephthalate of intrinsic viscosity Ä eta Ü at least 0.7 is hauled-off at a spinning rate of at least 2000 m/min and, without winding up, subjected to drawing and heat-treatment, after which it is continuously subjected to a relaxation heat treatment at a relaxation factor of 6 to 20% and wound up as a package. Moreover, the present invention also relates to a woven material of outstanding soft-stretchability which is characterized in that the aforesaid polyester yarn is used as the warp yarn and/or the weft yarn in the form of twisted yarn of twist coefficient 10,000 to 20,000. In this way, it is possible to produce yarn stably at a high yarn production rate without package tightening occurring, and, as well as there being little variation in properties in the fibre lengthwise direction, when made into fabric, said fabric stretches at low modulus so there is little sense of tightness, and it is possible to provide polyester yarn and woven materials with a soft handle.

    POLYESTER YARN AND ITS METHOD OF PRODUCTION
    25.
    发明专利
    POLYESTER YARN AND ITS METHOD OF PRODUCTION 未知

    公开(公告)号：CA2358715C

    公开(公告)日：2008-07-29

    申请号：CA2358715

    申请日：2000-11-15

    Applicant: TORAY INDUSTRIES

    Inventor： SUGANO KOJI ,  MOCHIZUKI KATSUHIKO ,  MAEDA YUHEI

    IPC: D02G3/02 ,  D01F6/62 ,  D02G1/02 ,  D02J1/08 ,  D03D15/00

    Abstract: A multifilament yarn consisting essentially of polytrimethylene terephthalate, characterized in that a strength in a stress-strain curve of 3 cN/dtex or more, a Young's modulus of 25 cN/dtex or less, a minimum differential Young's modulus in the range of 3 to 10 % elongation of 10 cN/dtex or less and an elastic recovery after 10% elongation of 90 % or more. A method for producing the polyester yarn, characterized as comprising subjecting a polytrimethylene terephthalate having a limiting viscosity [.eta.] of 0.7 or more to melt spinning to form a multifilament yarn, taking the multifilament yarn up at a spinning rate of 2000 m/min or more, stretching the yarn while treating it with heat without temporarily winding it up, successively subjecting the resulting yarn to relaxation treatment at a relaxation degree of 6 to 20 %, and then winding the yarn up to a package. The polyester yarn and a woven fabric made of the yarn are free from excessively tight winding even when the yarn is spun with high speed, and are reduced in the dispersion of its properties in the longitudinal direction of its fiber and in the feeling of squeeze.

    27.
    发明专利
    未知

    公开(公告)号：ID26325A

    公开(公告)日：2000-12-14

    申请号：ID20000474

    申请日：2000-06-06

    Applicant: TORAY INDUSTRIES

    Inventor： OCHI TAKASHI ,  MOCHIZUKI KATSUHIKO ,  MAEDA YUHEI

    IPC: D01F8/14 ,  D02G3/32 ,  D03D15/56

    Abstract: A soft stretch yarn substantially comprising polyester fibres has a stress, at 50% yarn stretch, of no more than 30x10 cN/dtex and, at the same time, a percentage recovery of at least 60%. Preferably, the Uster unevenness is no more than 2.0% and the crimp diameter is no more than 250 mu m. This soft stretch yarn can be produced by spinning yarn of conjugate fibres comprising two types of polyester in which one component is PTT at a take-up velocity of at least 1200 m/min, drawing at a drawing temperature of 50 to 80 DEG C at a draw ratio such that the drawn yarn tensile elongation is 20 to 45%, and then heat setting.

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