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    PREPARATION OF YARN FOR POLYESTER FIBER LIKE ANIMAL HAIR
    11.
    发明专利
    PREPARATION OF YARN FOR POLYESTER FIBER LIKE ANIMAL HAIR 失效

    公开(公告)号：JPS6088118A

    公开(公告)日：1985-05-17

    申请号：JP19138283

    申请日：1983-10-13

    Applicant: TORAY INDUSTRIES

    Inventor： KONNO YOSHIHIRO ,  TSUNEKAWA AKIO

    IPC: D01D5/253 ,  D01F6/62

    Abstract: PURPOSE:The titled yarn like high-quality animal hair useful as a writing brush, etc., having a cross-sectional shape of plural leaves, by subjecting a polymer comprising butylene terephthalate as a main component to melt spinning from a spinneret having specific values of width and length of slit of spinneret hole, and spinneret area under specific condition. CONSTITUTION:A polyester having structural unit comprising >=90mol% butylene terephthalate is spun by a spinneret having 0.04-0.1mm. width W of slit of spinneret hole, 0.2-0.6mm. length L of slit of spinneret hole, and 0.08-0.3mm. of one spinneret hole area under conditions satisfying the spinning draft DR and the distance l from the spinneret face to the surface of the cooling solution of the extruded yarn shown by the formula I [D is fineness of single filament of drawn yarn (denier)], formula II, and formula III [K is ratio of length to width of slit of spinneret hole; LO is degree of rover (%), to give the desired undrawn yarn having 0.65-1.2 intrinsic viscocity, 40-400 denier of single filament fineness of drawn yarn, a cross-sectional shape of 5-12 leaves, and a degree rover(b/a)X100 of 20-55%.

    PRODUCTION OF POLYESTER STAPLE FIBER
    14.
    发明专利
    PRODUCTION OF POLYESTER STAPLE FIBER 失效

    公开(公告)号：JPS62238818A

    公开(公告)日：1987-10-19

    申请号：JP7840986

    申请日：1986-04-07

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUOKA HIROSHI ,  KONNO YOSHIHIRO ,  TSUNEKAWA AKIO

    IPC: D01D4/02 ,  D01D5/092 ,  D01D5/253 ,  D01F6/62

    Abstract: PURPOSE:To stably spin fibers of fine size suitable for clothing fabrics without any problems in spinning properties, by extruding a polyester consisting essentially of polyethylene terephthalate through nozzle holes of specific shape under specified condition. CONSTITUTION:A polyester containing ethylene terephthalate in an amount of >=85mol% based on constituent units is melt extruded and spun through a spinneret having pi-shaped nozzle holes satisfying the formulas 0.05 =0.20(mm), h>=0.30(mm), Z1 and Z2>=0.10(mm) and 75 deg. =0.015(cm /sec.cm). The position where quenching is started in a chimney is set at 10-100(mm) below the spinneret surface. Suction quenching is carried out at 10-60(m/min) suction speed using a quenching part of 10-80(mm) suction and quenching length and then quenching with blowing air is subsequently performed at 30-90(m/min) air velocity.

    PRODUCTION OF SYNTHETIC STAPLE FIBER
    15.
    发明专利
    PRODUCTION OF SYNTHETIC STAPLE FIBER 失效

    公开(公告)号：JPS62223324A

    公开(公告)日：1987-10-01

    申请号：JP6424686

    申请日：1986-03-24

    Applicant: TORAY INDUSTRIES

    Inventor： KONNO YOSHIHIRO ,  TSUNEKAWA AKIO

    IPC: D01G1/02 ,  D01F6/62

    Abstract: PURPOSE:To improve accuracy of cut ratio, by specifying a condition to impart noncrimped part to a tow and a condition to supply a tow to a cutter. CONSTITUTION:A tow is intermittently heat-treated under a tension of 0.010-0.10g/d while keeping the expansion angle of

    FIBER HAVING SPECIAL CROSS-SECTIONAL SHAPE
    16.
    发明专利
    FIBER HAVING SPECIAL CROSS-SECTIONAL SHAPE 失效

    公开(公告)号：JPS6228405A

    公开(公告)日：1987-02-06

    申请号：JP16395685

    申请日：1985-07-26

    Applicant: TORAY INDUSTRIES

    Inventor： TSUNEKAWA AKIO ,  KONNO YOSHIHIRO ,  KITAURA KOICHI

    IPC: D01F6/00 ,  D01D5/253 ,  D01F6/62

    Abstract: PURPOSE:Synthetic fibers, having a specific pi cross-sectional shape with joined three straight-line cross-sectional parts, capable of giving antipilling properties with little damage of fibers in the spinning process without deteriorating the abrasion strength of the product and further imparting also water absorbing property. CONSTITUTION:Fibers having three joined straight-line cross sectional parts A, B and C and other two straight-line cross-sectional parts B and C in the same direction joined at the inward position from the respective tips of the straight-line cross-sectional part A. The ratio (L2/L1) is within 0.3-1.5 range and the straight-line cross-sectional parts B and C are on the inside of tangent lines S1 and S2. The fibers can be applied to polyesters, polyamides, polypropylene, etc., which are hydrophobic synthetic fibers obtained by melt spinning.

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