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    HIGHLY ORIENTED UNDRAWN YARN OF POLYESTER AND METHOD FOR PRODUCING THE SAME
    21.
    发明专利
    HIGHLY ORIENTED UNDRAWN YARN OF POLYESTER AND METHOD FOR PRODUCING THE SAME 失效

    公开(公告)号：JP2001140126A

    公开(公告)日：2001-05-22

    申请号：JP31932199

    申请日：1999-11-10

    Applicant: TORAY INDUSTRIES

    Inventor： KAWAKAMI DAISUKE ,  SUZUKI NORIO ,  FUKUHARA MOTOTADA

    IPC: D01F6/92

    Abstract: PROBLEM TO BE SOLVED: To obtain a highly oriented undrawn yarn of a polyester suppressed in the orientation by spinning and achieving improvement in productivity, to provide a method for stably and efficiently producing the highly oriented un drawn yarn of the polyester without causing problems in processes and further obtain the highly oriented undrawn yarn of the polyester excellent in drawing properties and processability of drawing and false twisting. SOLUTION: This highly oriented undrawn yarn of the polyester has >=25×110-3 and

    PRODUCTION OF PARTIALLY ORIENTED UNDRAWN FILAMENT BUNDLE
    22.
    发明专利
    PRODUCTION OF PARTIALLY ORIENTED UNDRAWN FILAMENT BUNDLE 失效

    公开(公告)号：JP2001081624A

    公开(公告)日：2001-03-27

    申请号：JP25302199

    申请日：1999-09-07

    Applicant: TORAY INDUSTRIES

    Inventor： SUZUKI NORIO ,  KAWAKAMI DAISUKE ,  FUKUHARA MOTOTADA

    IPC: D01F6/62 ,  D01D5/08 ,  D01D11/00

    Abstract: PROBLEM TO BE SOLVED: To provide a production method for a partially oriented undrawn filament bundle capable of suppressing orientation of fiber and improving productivity in high take-over speed. SOLUTION: In a melt spinning cooling a line of thread F discharged from a nozzle 2 by cooling air and then taking-over at a first take-over roller speed 4,000 to 7,000 m/min, the cooling and sucking the line of thread F by the fluid suction apparatus 4 are carried out under a condition satisfying Vmin of 0.5 to 2.0 times the first take-over roller speed in the equation: Vmin=Vext×(Sext/ Smin) (wherein, Smin is the minimum sectional area of a tubular path of the suction apparatus 4, Sext is a sectional area of a tubular path of the exit of the fluid suction apparatus and Vext is a velocity of the fluid at the exit of the fluid suction apparatus).

    POLYESTER FOR MELT-SPINNING, PARTIALLY ORIENTED UNDRAWN FIBER OF POLYESTER AND ITS PRODUCTION
    23.
    发明专利
    POLYESTER FOR MELT-SPINNING, PARTIALLY ORIENTED UNDRAWN FIBER OF POLYESTER AND ITS PRODUCTION 失效

    公开(公告)号：JP2001011733A

    公开(公告)日：2001-01-16

    申请号：JP18716299

    申请日：1999-07-01

    Applicant: TORAY INDUSTRIES

    Inventor： FUNATSU YOSHIJI ,  SUZUKI NORIO ,  FUKUHARA MOTOTADA

    IPC: D01F6/84

    Abstract: PROBLEM TO BE SOLVED: To obtain a polyester which is used for melt spinning, has excellent fiber formability and excellent productivity and can give partially oriented undrawn fibers having excellent drawability, process passableness and draw fiber physical properties, by copolymerizing trimellitic acid, trimesic acid or one of their derivatives so as to satisfy specific conditions. SOLUTION: This polyester copolymerized with trimellitic acid, trimesic acid or one of their derivatives so as to satisfy the conditions of the inequalities: 0.08

    PRODUCTION OF POLYESTER MIXED FILAMENT YARN AND TEXTURED YARN
    24.
    发明专利
    PRODUCTION OF POLYESTER MIXED FILAMENT YARN AND TEXTURED YARN 失效

    公开(公告)号：JPH1088418A

    公开(公告)日：1998-04-07

    申请号：JP23750496

    申请日：1996-09-09

    Applicant: TORAY INDUSTRIES

    Inventor： FUNATSU YOSHIJI ,  OCHI TAKASHI ,  FUKUHARA MOTOTADA

    IPC: D02G1/02 ,  D01D5/08 ,  D01F8/14 ,  D02G3/04

    Abstract: PROBLEM TO BE SOLVED: To produce the subject mixed filament yarn capable of readily controlling the orientation at the time of spinning and stably producing a textured yarn excellent in a bulky and soft feeling, body and stiffness by simultaneously spinning filament groups of core-sheath conjugated filaments at plural compounding ratios of a polymer therein. SOLUTION: Filament groups at >=2 kinds of compounding ratios R of a polymer B in core-sheath conjugated filaments F comprising a polymer A which is substantially a polyester as a sheath part and the polymer B having a larger temperature dependence of an elongational viscosity than that of the polymer A such as a polystyrene-based polymer as a core part are simultaneously spun at >=2,500m/min spinning speed to afford a polyester combined filament yarn. Furthermore, the maximum compounding ratio Rmax of the filaments F in which the compounding ratio R of the polymer B is the maximum and the minimum compounding ratio Rmin of the filaments in which the compounding ratio R of the polymer B is the minimum preferably satisfy Rmin =0.4wt.%. The false twisting or draw false twist texturing treatment of the resultant combined filament yarn is preferably carried out to produce a polyester textured yarn.

    PRODUCTION OF POLYESTER CONJUGATE FIBER
    25.
    发明专利
    PRODUCTION OF POLYESTER CONJUGATE FIBER 失效

    公开(公告)号：JPH101825A

    公开(公告)日：1998-01-06

    申请号：JP15538296

    申请日：1996-06-17

    Applicant: TORAY INDUSTRIES

    Inventor： OCHI TAKASHI ,  KIDAI AKIRA ,  FUKUHARA MOTOTADA

    IPC: D01F8/14 ,  D01D5/34

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polyester conjugate yarn, capable of increasing a delivery amount per unit time, namely improving productivity and bettering the defect of a conventional industrial high-speed spun yarn, by using a specific polymer as a core component in producing the polyester fiber. SOLUTION: A polyester sheath-core conjugate fiber which comprises a polyester as the sheath component and a polymer as the core component having higher temperature dependence of elongation viscosity than that of the core component and has 1-10wt.% conjugate ratio of the core component to the whole conjugate fiber is spun to generate necking at 8,000-15,000m/minute spinning speed at

    HIGHLY ORIENTED UNDRAWN POLYESTER FIBER AND FALSE-TWIST TEXTURED YARN
    26.
    发明专利
    HIGHLY ORIENTED UNDRAWN POLYESTER FIBER AND FALSE-TWIST TEXTURED YARN 失效

    公开(公告)号：JPH09176920A

    公开(公告)日：1997-07-08

    申请号：JP34085895

    申请日：1995-12-27

    Applicant: TORAY INDUSTRIES

    Inventor： OCHI TAKASHI ,  KIDAI AKIRA ,  FUKUHARA MOTOTADA ,  TANIGUCHI ATSUSHI

    IPC: D01F6/92 ,  D01D5/34 ,  D01F8/10 ,  D01F8/14 ,  D02G1/00 ,  D02G3/02

    Abstract: PROBLEM TO BE SOLVED: To provide the subject fiber having specified wide angle X-ray diffraction pattern and birefringence, enabling draw-false twist texturing at a draw ratio comparable to conventional process, exhibiting small change with time and having high twist tension in draw false-twisting process. SOLUTION: The objective highly oriented undrawn polyester fiber exhibits diffraction peaks attributable to polyester crystal by wide angle X-ray diffraction and has a birefringence of 0.015-0.050 which is comparable to or lower than that of conventional highly oriented underawn polyester yarn(POY). The fiber can be produced e.g. by using a polyester as a sheath component and a polymer having a temperature dependency of extension viscosity higher than that of the sheath component as a core component and melt-spinning the polymers at a spinning speed of 4,000-9,000m/min or thereabout.

    FALSE TWIST TEXTURED YARN AND ITS PRODUCTION
    28.
    发明专利
    FALSE TWIST TEXTURED YARN AND ITS PRODUCTION 失效

    公开(公告)号：JPH08120536A

    公开(公告)日：1996-05-14

    申请号：JP25830494

    申请日：1994-10-24

    Applicant: TORAY INDUSTRIES

    Inventor： FUKUOKA MITSURU ,  MAEDA YUHEI ,  FUKUHARA MOTOTADA

    IPC: D01F6/62 ,  D02G1/02 ,  D02G3/04

    Abstract: PURPOSE: To obtain a new bulky textured yarn, having high levels of bulkiness, stretchability, stiffness, resiliency, a soft touch feeling, etc., especially a polyester false twist textured yarn suitable for a woolly woven or knitted fabric having fullness. CONSTITUTION: This false twist textured yarn is obtained by combining filament groups, comprising polyethylene terephthalate and having mutually different single filament deniers. At least one of the filament groups has 3-8 denier single filament size and comprises a high-polymerization degree polymer having 0.70-1.0 intrinsic viscosity and the other filament groups have 0.2-2 denier single filament sizes and comprise a low-polymerization polymer having 0.55-0.65 intrinsic viscosity. The difference in the intrinsic viscosity between both the filament groups is >=0.1.

    MODIFIED POLYBUTYLENE TEREPHTHALATE FIBER
    29.
    发明专利
    MODIFIED POLYBUTYLENE TEREPHTHALATE FIBER 失效

    公开(公告)号：JPH07310233A

    公开(公告)日：1995-11-28

    申请号：JP10290094

    申请日：1994-05-17

    Applicant: TORAY INDUSTRIES

    Inventor： OCHI TAKASHI ,  FUKUHARA MOTOTADA ,  KIDAI AKIRA

    IPC: D01F6/62 ,  D01F6/84 ,  D01F6/86

    Abstract: PURPOSE:To obtain a modified polybutylene terephthalate at an ultra-high spinning speed, having improved mechanical dimensional stability and free from troubles of the periodic unevenness in longitudinal direction and the frequent occurrence of the bright specks and shade bars caused by package crumbling and variation in unreeling tension. CONSTITUTION:This modified polybutylene terephthalate copolymerized with 15-50mol% ethylene glycol, is obtained by polycondensing terephthalic acid as an acid component with 1,4-butylenediol and ethylene glycol as diol components. The modified polybutylene terephthalate is melted and spun through a spinneret at an ultra-high speed, i.e., 7000-14000m/min, preferably 8500-14000m/min. The resultant package of the modified polybutylene terephthalate fiber has the following physical properties; =4.5g/de, preferably >=5.0g/de tensile strength.

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