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公开(公告)号：JP2003129342A
公开(公告)日：2003-05-08
申请号：JP2001327534
申请日：2001-10-25
Applicant: TORAY INDUSTRIES
Inventor： FUNATSU YOSHIJI , MIYAZONO KOKI , TANIGUCHI ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a foamed fiber improved in mechanical characteristics, excellent in fiber-forming properties and giving little load to the environment. SOLUTION: This method for producing the foamed fiber is to carry out a bi-component fiber spinning by using a thermoplastic resin mixture (A) prepared by adding 0.5-6 wt.% carbon dioxide and/or nitrogen to the thermoplastic resin and melting and mixing the same and a thermoplastic resin mixture (B) prepared by adding
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公开(公告)号：JP2002363820A
公开(公告)日：2002-12-18
申请号：JP2001170579
申请日：2001-06-06
Applicant: TORAY INDUSTRIES
Inventor： FUNATSU YOSHIJI , KURODA MASATO , TANIGUCHI ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a flat yarn composed of a thermoplastic synthetic resin having excellent qualities in space and energy savings. SOLUTION: This method for producing a flat yarn composed of a thermoplastic synthetic resin is characterized in that a traveling yarn is irradiated with a laser beam under conditions of 5
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公开(公告)号：JP2002348736A
公开(公告)日：2002-12-04
申请号：JP2001155359
申请日：2001-05-24
Applicant: TORAY INDUSTRIES
Inventor： KAWAKAMI DAISUKE , FUNATSU YOSHIJI , TANIGUCHI ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a thermoplastic synthetic fiber capable of producing the fiber having >=10 cN/dtex tensile strength easily and in a high productivity by a conventional melt spinning, and a high quality and low cost product. SOLUTION: This method for producing the thermoplastic synthetic fiber includes arranging >=1 kind of thermoplastic resins A at the inside of monofilaments constituting the fiber, and ejecting for forming thermoplastic resins B having a smaller melt viscosity than that of the resins A so as to cover the thermoplastic resins A.
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公开(公告)号：JP2001348727A
公开(公告)日：2001-12-21
申请号：JP2000165545
申请日：2000-06-02
Applicant: TORAY INDUSTRIES
Inventor： FUNATSU YOSHIJI , KURODA MASATO , FUKUHARA MOTOTADA
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a high-strength fiber in good productivity while saving the space and energy. SOLUTION: This method for producing a polyester fiber is characterized in that a polyester undrawn fiber having =0.020 birefringence Δn is irradiated with a laser beam, and subjected to a substantial one-step drawing at >=50 m/min drawing speed to provide the fiber having >=1.360 g/cm3 density, >=0.130 Δn, and
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5.发明专利
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
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Patent Agency Ranking
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
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.
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公开(公告)号：JP2001271226A
公开(公告)日：2001-10-02
申请号：JP2000078519
申请日：2000-03-21
Applicant: TORAY INDUSTRIES
Inventor： MIYAZONO KOKI , FUNATSU YOSHIJI , FUKUHARA MOTOTADA
IPC: C08G63/668 , D01F6/86
Abstract: PROBLEM TO BE SOLVED: To provide a partially oriented undrawn polyester yarn having remarkably improved spinnability, draw ratio and productivity while suppressing the orientation in the spinning process. SOLUTION: The partially oriented undrawn polyester yarn is composed of a copolyester copolymerized with a polyalkylene glycol and a polyfunctional molecule having >=3 ester-forming functional groups in one molecule and has a birefringence of 0.015-0.060.
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公开(公告)号：JP2001089938A
公开(公告)日：2001-04-03
申请号：JP26291599
申请日：1999-09-17
Applicant: TORAY INDUSTRIES
Inventor： FUNATSU YOSHIJI , KAWAKAMI DAISUKE , FUKUHARA MOTOTADA
Abstract: PROBLEM TO BE SOLVED: To provide a polyester composition suitable for the improvement in the productivity of a partially oriented undrawn polyester yarn in high thread- manufacturing performance while suppressing the orientation in spinning, provide a process for stably and efficiently producing the partially oriented undrawn polyester yarn without causing the problem on the process and provide a partially oriented undrawn polyester yarn having excellent drawability and draw false-twisting processability. SOLUTION: The objective polyester composition for melt-spinning contains 0.5-5.0 wt.% polystyrene polymer satisfying the formulas of Mw>=220,000, Mw/Mn>=3.0 and Mz/Mw>=2.0. The partially oriented undrawn polyester yarn is produced from the polyester composition. The partially oriented undrawn polyester yarn is produced by the melt-spinning of the polyester composition at a take-up speed of 3,000-8,000 m/min.
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公开(公告)号：JP2000282325A
公开(公告)日：2000-10-10
申请号：JP8744399
申请日：1999-03-30
Applicant: TORAY INDUSTRIES
Inventor： FUNATSU YOSHIJI , UCHIDA MINORU , FUKUHARA MOTOTADA
Abstract: PROBLEM TO BE SOLVED: To obtain the subject partially orientated undrawn yarn prominently developing an orientation controlling effect, having excellent process passage by adding a fixed amount of a specific diacetal compound to a polyester comprising an ethylene terephthalate as a main repeating unit and subjecting the mixture to melt spinning. SOLUTION: A polyester comprising an ethylene terephthalate as a main repeating unit is formulated with 0.05-0.6 wt.% based on the polestar of a diacetal compound of the formula (R1 and R2 are each H, a 1-4C alkyl, a 1-4C alkoxy, a halogen, nitro or amino; m and n are each 1-5; t is 0 or 1) such as dibenzylidenesorbitol. The obtained polyester composition is subjected to melt spinning at 3,000-6,000 m/minute take-off speed to give the objective polyester partially orientated undrawn yarn having 0.02-0.06 double refractive index.
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公开(公告)号：JP2003096616A
公开(公告)日：2003-04-03
申请号：JP2001291896
申请日：2001-09-25
Applicant: TORAY INDUSTRIES
Inventor： FUNATSU YOSHIJI , MASUDA MASATO , TANIGUCHI ATSUSHI
Abstract: PROBLEM TO BE SOLVED: To provide a production method causing little load of a thermoplastic synthetic fiber on the environment by which mechanical properties, particularly strength of the synthetic fiber is improved. SOLUTION: This method for producing the thermoplastic synthetic fiber comprises adding 0.3-6 wt.% carbon dioxide or nitrogen to a crystalline thermoplastic resin having >=5,000 poise melting viscosity at 290 deg.C and 20 sec and melting and mixing the resin with carbon dioxide or nitrogen and discharging the mixture under conditions satisfying the formula dP/dt>=5,000 [wherein dP/dt is a pressure release rate (kg/cm .sec)] from a spinneret hole.
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