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    METHOD FOR PRODUCING COMBINED FILAMENT YARN
    34.
    发明专利
    METHOD FOR PRODUCING COMBINED FILAMENT YARN 失效

    公开(公告)号：JP2001279527A

    公开(公告)日：2001-10-10

    申请号：JP2000088648

    申请日：2000-03-28

    Applicant: TORAY INDUSTRIES

    Inventor： OCHI TAKASHI ,  SAKAI TAKAAKI ,  MURAKAMI KAKUJI

    IPC: D01F6/62 ,  D01D5/08 ,  D02G3/04 ,  D02G3/28

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a combined filament yarn, having a high spinning stability, capable of forming a fabric low in cost and excellent in texture in the method for producing a spun combined filament yarn using a single polyester. SOLUTION: This method for producing a combined filament yarn is characterized by including a group having 3,000-9,500 spinning draft and a group having 20-500 spinning draft in carrying out melt spinning of two or more kinds of yarns from the same spinneret by using a single polyester having 0.68-2.00 intrinsic viscosity [η].

    PARTIALLY HOLLOW POLYESTER YARN AND METHOD FOR PRODUCING THE SAME
    35.
    发明专利
    PARTIALLY HOLLOW POLYESTER YARN AND METHOD FOR PRODUCING THE SAME 失效

    公开(公告)号：JP2001207339A

    公开(公告)日：2001-08-03

    申请号：JP2000020005

    申请日：2000-01-28

    Applicant: TORAY INDUSTRIES

    Inventor： OCHI TAKASHI ,  KIDAI AKIRA ,  FUKUHARA MOTOTADA

    IPC: D02J1/22 ,  D01D5/24 ,  D01D5/34 ,  D01F8/10 ,  D01F8/14

    Abstract: PROBLEM TO BE SOLVED: To produce a partially hollow polyester yarn excellent in process passableness for forming a fabric capable of solving defects and excellent in touch feeling and fabric surface aesthetic properties and further excellent in lightweight and heat insulating properties and to provide a method for producing the partially hollow polyester yarn. SOLUTION: This partially hollow polyester yarn is characterized in that the yarn is a core-sheath conjugate yarn comprising (A) a polymer which is substantially a polyester and arranged in a sheath part and (B) a polymer having a greater temperature dependence of elongational viscosity than that of the polymer (A) and arranged in an amount of 1-15 wt.% based on the total weight of the core-sheath conjugate yarn in a core part, the polymer (B) arranged in the core part is cut to partially form hollow parts, the length of solid parts is 10-100 μm on the average, the length of the hollow parts is 5-100 μm on the average, the strength is >=3.0 cN/dtex and the elongation is 20-50%.

    METHOD FOR PRODUCING LATENTLY CRIMP-EXPRESSING POLYESTER YARN
    36.
    发明专利
    METHOD FOR PRODUCING LATENTLY CRIMP-EXPRESSING POLYESTER YARN 失效

    公开(公告)号：JP2001207331A

    公开(公告)日：2001-08-03

    申请号：JP2000017544

    申请日：2000-01-26

    Applicant: TORAY INDUSTRIES

    Inventor： OCHI TAKASHI ,  KIDAI AKIRA ,  SATO MASAYUKI

    IPC: D01F6/84 ,  D01D5/22 ,  D01F6/62

    Abstract: PROBLEM TO BE SOLVED: To provide an efficient method for producing a latently crimp- expressing polyester yarn improved in color developing properties which were problems in conventional yarns and moreover capable of providing a fabric having little unevenness of the yarn and excellent in stretchability. SOLUTION: This method for producing the latently crimp-expressing polyester yarn is characterized by spinning a polyester and a modified polyester copolymerized with sodium 5-sulfoisophthalate in an amount of 1-7 mol% based on the total acid and having =85 deg.C drawing temperature with >=1.20×NDR(natural drawing ratio) drawing ratio without temporarily winding.

    BLENDED YARN
    38.
    发明专利
    BLENDED YARN 失效

    公开(公告)号：JP2001003234A

    公开(公告)日：2001-01-09

    申请号：JP2000171603

    申请日：2000-06-08

    Applicant: TORAY INDUSTRIES

    Inventor： OCHI TAKASHI ,  SATO MASAYUKI ,  KIDAI AKIRA

    IPC: D01F6/62 ,  D01D5/08 ,  D01D5/12 ,  D01D5/34 ,  D01F8/10 ,  D01F8/14 ,  D02G3/04 ,  D02G3/22 ,  D02J1/00 ,  D02J1/22 ,  D03D15/00

    Abstract: PROBLEM TO BE SOLVED: To obtain a blended yarn which is useful for woven fabrics, knitted fabrics, or so on, having excellent swollen, soft and repulsive touches in extremely simple processes, by blending low elongation fibers comprising a polyester with high elongation fibers comprising specific sheath-core conjugate fibers. SOLUTION: This blended yarn comprises low elongation fibers and high elongation fibers. The low elongation fibers comprise a polyester such as a highly shrinking polyester, and the high elongation fibers comprise sheath-core conjugate fibers which comprise a polyester in the sheath portions and a polymer having higher elongation viscosity temperature dependency than that of the sheath polyester in the core portion. The difference between the elongation of the low elongation fibers and the elongation of the high elongation fibers is preferably >=80%. The polymer arranged in the core portions of the high elongation fibers is preferably used in an amount of 2 to 5 wt.%.

    MINUTELY SHRINKABLE POLYESTER FILAMENT YARN AND ITS PRODUCTION
    39.
    发明专利
    MINUTELY SHRINKABLE POLYESTER FILAMENT YARN AND ITS PRODUCTION 失效

    公开(公告)号：JP2000355828A

    公开(公告)日：2000-12-26

    申请号：JP16498699

    申请日：1999-06-11

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUDA TATSUAKI ,  SATO YOSHIAKI ,  OCHI TAKASHI

    IPC: D01F6/62

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject filament yarn satisfying specific physical properties and capable of giving woven/knitted fabrics with good puffiness, softness and resilience when blended filament yarns are produced using the yarn as a constituent, by treating an undrawn polyester filament yarn or the like at each specific draw ratio, draw temperature and heat-setting temperature. SOLUTION: This filament yarn is obtained by drawing and heat-setting an undrawn or semi-oriented polyester filament yarn at a draw ratio of 1.05-1.20, at a draw temperature of 90-110 deg.C and at a heat-setting temperature of 110-140 deg.C using a drawing machine having at least one pair of hot roller systems. This filament yarn thus obtained simultaneously satisfies the following characteristics: (A) elastic recovery percentage of elongation at 3% elongation is 60-8.5%, (B) boiling water shrinkage is 0-3%, and (C) dry heat shrinkage is equal to or lower than the boiling water shrinkage.

    LOW SHRINKAGE POLYESTER FIBER AND CLOTH
    40.
    发明专利
    LOW SHRINKAGE POLYESTER FIBER AND CLOTH 失效

    公开(公告)号：JP2000328381A

    公开(公告)日：2000-11-28

    申请号：JP13019999

    申请日：1999-05-11

    Applicant: TORAY INDUSTRIES

    Inventor： OCHI TAKASHI ,  SATO MASAYUKI

    IPC: D02G1/18 ,  D02G3/04 ,  D03D15/00

    Abstract: PROBLEM TO BE SOLVED: To obtain a low shrinkage polyester fiber yarn and a polyester mixed yarn for producing a polyester cloth improving its inferior dimensional stability of conventional self-elongating yarns, excellent in bulky feeling, soft feeling and repulsive feeling and further having a small dyeing irregularity, and to provide a method for producing a low shrinkage polyester fiber. SOLUTION: This low shrinkage polyester fiber satisfies the following (a) to (e) characteristics simultaneously. (a) Structure integrity parameter (ε0.2) =Dry shrinkage (DSL) (d) Uster irregularity (U%)

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