公开(公告)号：JP2000136440A

公开(公告)日：2000-05-16

申请号：JP31319598

申请日：1998-11-04

Applicant: TORAY INDUSTRIES

Inventor： OCHI TAKASHI ,  SATO MASAYUKI ,  SUGIMURA SHOICHI

IPC: D01F8/14 ,  D01D5/32 ,  D01D5/34 ,  D03D15/00 ,  D03D15/04

Abstract: PROBLEM TO BE SOLVED: To provide a latent crimp-expressing polyester fiber having an improved crimp-expressing ability under restraint and capable of giving a fabric having excellent stretchability, and to provide a method for producing the latent crimp-expressing polyester fiber, capable of improving bad operability caused by combining polymers having a large melt viscosity difference therebetween. SOLUTION: A latent crimp-expressing polyester fiber comprises two kinds of polymers and has a crimp elongation-retaining rate of >=5%. The crimp elongation-retaining rate = [(E0-E3.5)/E0×100%. E0: a crimp elongation rate, when thermally treated in a load-free state. E3.5: a crimp elongation rate, when thermally treated under a load of 3.5×10-3 cN/dtex. The crimp elongation rate (%) = [L1-L2)/L1]×100%. L1: a skein length, when a fiber skein is subjected to a boiling water treatment for 15 min, to a 160 deg.C dry heat treatment for 15 min and then to a load of 180×10-3 cN/dtex. L2: a skein length, when a fiber skein is subjected to a boiling water treatment for 15 min, to a 160 deg.C dry heat treatment for 15 min and then to a load of 0.9×10-3 cN/dtex.

公开(公告)号：JP2000110025A

公开(公告)日：2000-04-18

申请号：JP27708798

申请日：1998-09-30

Applicant: TORAY INDUSTRIES

Inventor： OCHI TAKASHI ,  SATO MASAYUKI ,  SHIMIZU TOSHIAKI

IPC: D01F6/62 ,  D02G3/04 ,  D03D15/00 ,  D03D15/04

Abstract: PROBLEM TO BE SOLVED: To simply obtain a polyester fiber capable of providing a spontaneously elongating fiber having excellent qualities in excellent operability and productivity and producing a woven and a knitted fabrics having improved hand by making the fiber show an X letter pattern by small-angle X-ray scattering and have a specific elongation and specified Uster irregularity. SOLUTION: This polyester fiber simultaneously shows (i) an X letter pattern by small-angle X-ray scattering and has (ii) >=80% elongation and (iii) =1.5 nm crystal size in the direction of (100) plane. Preferably the fiber is heat-treated under relaxation to give a polyester fiber, which is mixed with a highly shrinkable fiber having >=10% shrinkage percentage in boiling water to give a polyester combined filament yarn and the combined filament yarn is used to produce a woven and a knitted fabrics.

公开(公告)号：JPH11222745A

公开(公告)日：1999-08-17

申请号：JP2495698

申请日：1998-02-05

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 polyester-based combined filament yarn capable of giving at low cost knitted fabrics with excellent puffiness, softness, resilient feel and touch feel, by simultaneously spinning plural kinds of filaments differing in orientation degree from one another into an undrawn hetero-orientation degree combined filament yarn, which is then drawn. SOLUTION: This polyester-based combined filament yarn is obtained by the following process: two or more kinds of filaments differing in orientation degree from one another are spun simultaneously into an undrawn hetero- orientation degree combined filament yarn, which, in turn, is substantially drawn so that the filaments of higher orientation degree turn into shrinkable filaments, while those of lower orientation degree into self-extensible filaments; wherein it is preferable that the self-extensible filaments have a dry heat shrinkage of -5 to 0% and boiling water shrinkage of =8%, and the dry heat shrinkage difference between the above two kinds of filaments is >=10%.

公开(公告)号：JPH1161572A

公开(公告)日：1999-03-05

申请号：JP22797897

申请日：1997-08-25

Applicant: TORAY INDUSTRIES

Inventor： OCHI TAKASHI ,  FUKUHARA MOTOTADA

IPC: D01F6/84 ,  D01D5/34 ,  D01F8/14 ,  D02G3/36

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a sheath-core conjugate yarn for improving productivity by increasing a deliver amount per unit time and bettering qualities such as colorability, dyeing unevenness and wear resistance characteristics. SOLUTION: This method for producing a sheath-core conjugate yarn comprises spinning a sheath-core conjugate yarn comprising a sheath component substantially composed of a polyethylene terephthalate and a core component composed of a polyester copolymerized with 5-15 wt.% of sodium 5- sulfoisophthalate and has 1-15 core component conjugate ratio at 4,000-12,000 m/minute spinning speed.

公开(公告)号：JPH1161571A

公开(公告)日：1999-03-05

申请号：JP21487397

申请日：1997-08-08

Applicant: TORAY INDUSTRIES

Inventor： OCHI TAKASHI ,  FUKUHARA MOTOTADA

IPC: D02G3/36 ,  D01F8/14

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a sheath-core conjugate yarn for improving productivity by increasing a deliver amount per unit time and bettering qualities such as colorability, dyeing unevenness and wear resistance characteristics. SOLUTION: This method for producing a sheath-core conjugate yarn comprises spinning a sheath-core conjugate yarn comprising a sheath component substantially composed of a polyethylene terephthalate and a core component composed of a polyester copolymerized with 5-20 wt.% of a polyethylene glycol and has 1-15 core component conjugate ratio at 4,000-1,000 m/minute spinning speed.

公开(公告)号：JPH06299406A

公开(公告)日：1994-10-25

申请号：JP8736993

申请日：1993-04-14

Applicant: TORAY INDUSTRIES

Inventor： OCHI TAKASHI ,  MAEDA YUHEI ,  MATSUMOTO TADAYUKI

IPC: D01D10/02

Abstract: PURPOSE:To readily set the optimum distance from a spinneret to a heating zone, the optimum length of the heating zone, etc., corresponding to a grade of yarn during high-speed spinning, take-off speed during spinning, etc., even while fixing a main body of a heat-treating device and, in its turn, to easily obtain various grades of yarns having excellent physical properties. CONSTITUTION:In a heat-treating device equipped with a heating cylinder to heat the atmosphere of yarn of high-speed spinning, a heat insulation column is detachably fixed to the outlet side of yarn of the heating cylinder. Since the heat insulating column 3c is detachably fixed to the lower end of the heating column 3a, the heat insulating column is optionally extracted or length, inner diameter, etc., of the heat insulating column is readily changed.