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    PNEUMATIC RADIAL TIRE
    11.
    发明专利
    PNEUMATIC RADIAL TIRE 失效

    公开(公告)号：JPH0197230A

    公开(公告)日：1989-04-14

    申请号：JP25312687

    申请日：1987-10-07

    Applicant: TORAY INDUSTRIES

    Inventor： SATO TAKUJI ,  SAITO ISOO ,  YAMAMOTO MASAHARU ,  KUBOTA KOICHI

    IPC: B60C9/00 ,  D02G3/36 ,  D02G3/48

    Abstract: PURPOSE: To provide the subject pneumatic radial tire that is light in weight and has excellent resistance to heat and to show good driving stability by using steel cords as belt cords and a sheath-core conjugated yarn comprising the polyester core component and the polyamide sheath component as carcass cords. CONSTITUTION: A sheath-core type conjugated fiber comprising polyester core component that mainly comprises ethylene terephthalate units as the main component with an intrinsic viscosity [η] of >=0.80 and the polyamide sheath component with the relative viscosity ηr of >=2.8 in sulfuric acid where the proportion of the polyester core component is 30-90 wt.%, the peak temperature of the polyester core component according to the DSC of >=249 deg.C are twisted in the Z and S directions to give the tire cord having the twist coefficient K of 1,900-2,500, the strength of >=5.5 g/d, the intermediate elongation of 4-7%, the dry heat shrinkage of

    PRODUCTION OF COPOLYAMIDE MOLDING
    16.
    发明专利
    PRODUCTION OF COPOLYAMIDE MOLDING 失效

    公开(公告)号：JPS61159422A

    公开(公告)日：1986-07-19

    申请号：JP17085

    申请日：1985-01-07

    Applicant: TORAY INDUSTRIES

    Inventor： KUBOTA KOICHI ,  YAMAMOTO MASAHARU ,  SATO TAKUJI ,  UENO TOSHIAKI

    IPC: C08G69/00 ,  C08G69/26 ,  C08J3/12 ,  C08L77/00 ,  D01F6/80

    Abstract: PURPOSE:To increase the yields of a molding without detriment to polymer qualities, by copolymerizing hexamethylenediammonium adipate with hexamethylenediammonium terephthalate at a specified temperature and specifying the degree of polymerization of the copolymer. CONSTITUTION:A copolyamide is obtained by copolymerizing hexamethylenediammonium adipate (A) with hexamethylenediammonium terephthalate (B) under conditions in which the maximum attainable temperature (T deg.C) is represented by the formula (wherein Tm deg.C is the crystal m.p. of the formed copolyamide). This copolyamide is melt-extruded under conditions in which the degree of polymerization during melt extrusion is 2.0-2.5 in terms of a relative viscosity (etar) in sulfuric acid. The proportion of component (B) in said copolyamide is preferably about 20-60wt%. It is preferable in order to control the degree of polymerization during melt molding to add 0.7-4mol%, based on the salts as materials, viscosity stabilizer (e.g., aliphatic dicarboxylic acid).

    DIRECT SPIN-DRAW PROCESS FOR POLYESTER FIBER
    18.
    发明专利
    DIRECT SPIN-DRAW PROCESS FOR POLYESTER FIBER 失效

    公开(公告)号：JPS60134023A

    公开(公告)日：1985-07-17

    申请号：JP24266183

    申请日：1983-12-22

    Applicant: TORAY INDUSTRIES

    Inventor： SATOU TAKUJI ,  YAMAMOTO MASAHARU ,  ITOU SHIYOUJI

    IPC: D02J1/22 ,  D01D5/12 ,  D01F6/62 ,  D02J7/00

    Abstract: PURPOSE:A yarn is solidified by cooling, treated with finishing oil, passed through the taking-up roller, the drawing roller and the relaxing godet roller under specific conditions, then wound up to give a yarn package with sufficiently suppressed inner distortion and small yarn unevenness at high speeds. CONSTITUTION:A melt-extruded yarn Y is solidified by cooling, treated with a finishing oil, entangled with the device 4, then drawn between the taking-up roller 5 and the drawing roller 6 kept at Tg-(Tm-20) deg.C[Tg is the glass transition point of the polyester in deg.C; Tm is the melting point of the polyester in deg.C]and heat-treated. Then, the yarn is relaxed with the relaxing rollers 9, 10 and wound up around the winder at a speed over 4,000m/min.

    METHOD OF PRODUCING POLYAMIDE FIBER
    19.
    发明专利
    METHOD OF PRODUCING POLYAMIDE FIBER 失效

    公开(公告)号：JPS60128167A

    公开(公告)日：1985-07-09

    申请号：JP23165283

    申请日：1983-12-08

    Applicant: TORAY INDUSTRIES

    Inventor： SATOU TAKUJI ,  YAMAMOTO MASAHARU ,  ITOU SHIYOUJI

    IPC: D01F6/60 ,  B65H54/00 ,  B65H54/02 ,  B65H54/28 ,  B65H55/02 ,  D01D5/12 ,  D01D7/00 ,  D04B21/00

    Abstract: PURPOSE:To prevent a package from variation of take-up tension according to the take-up position in a spindle drive take-up machine by traversing a spindle itself to which a bobbin is attached according to the take-up speed. CONSTITUTION:Polyamide fiber Y from a spun yarn mouth piece is intercepted and processed by an air interception nozzle 4 and hot stretched through a yarn path guide 8 by goddy rollers 5, 6 to be taken up into the form of barn with 4,000m/min or more speed through a yarn path guide 8 by a take-up unit 9 performing traverse motion. A drive motor 10 of this take-up unit 9 is controlled to give a constant take-up tension by a control board 13 consisting of a tension detector 7, a power controller 11 and a strength setter 12. And a package 15 itself is traversed by a hydraulic cylinder 14 such that the take-up speed V and traverse speed T have the following relationship; V/4,000

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