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公开(公告)号：JPH0949121A
公开(公告)日：1997-02-18
申请号：JP5177496
申请日：1996-03-08
Applicant: TORAY INDUSTRIES , TORAY MONOFILAMENT CO
Inventor： MASUDA TOYOHIKO , MAEDA YUHEI , HORII KEI , IWAMA TADANORI
Abstract: PROBLEM TO BE SOLVED: To obtain both a polyester fiber having excellent stain-proofing properties and hydrolytic resistance and a required and sufficient strength as various industrial woven fabrics, etc., and a composition therefor. SOLUTION: This polyester composition comprises a polymer component containing 99.9-70wt.% polyester having g terminal carboxyl group concentration and 0.1-30wt.% copolymer of propylene and vinylidene fluoride and further contains 0.005-1.5wt.% carbodiimide compound in an unreacted state therein. Furthermore, the polyester monofilament or multifilament yarn or industrial woven fabric such as a canvas for a papermaking dryer, a papermaking wire, a filter or a conveyor net used in a bonding process for heat bonding a nonwoven fabric using the monofilament is composed of the polyester composition comprising the polymer component.
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公开(公告)号：JPH08218226A
公开(公告)日：1996-08-27
申请号：JP2636495
申请日：1995-02-15
Applicant: TORAY INDUSTRIES
Inventor： KOBAYASHI HISAAKI , TAGAYA MINORU , MAEDA YUHEI
Abstract: PURPOSE: To obtain a polyester fiber containing a high-molecular weight polytetrafluoroethylene together with a flame retardant therein without dripping in combustion. CONSTITUTION: This polyester fiber contains (A) a polytetrafluoroethylene having >=1000000, preferably >=1500000 number-average molecular weight and (B) a flame retardant. The content of the component (A) is preferably 0.02-2.0wt.% and the component (R) is preferably a bifunctional organophosphorus compound of the formula (R1 is an aryl, a 1-6C alkyl, a cycloalkyl, etc.; R2 is a 1-4C alkyl). The yarn manufacturing properties or mechanical characteristics of a polyester are not deteriorated.
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公开(公告)号：JPH0835118A
公开(公告)日：1996-02-06
申请号：JP16935794
申请日：1994-07-21
Applicant: TORAY INDUSTRIES
Inventor： KOBAYASHI HISAAKI , TAGAYA MINORU , MAEDA YUHEI
Abstract: PURPOSE:To obtain the subject fiber with good wear resistance while preventing white powder development or scum staining during the higher-order process therefor, capable of giving fabrics of good touch feeling. CONSTITUTION:This polyester fiber good in wear resistance contains 0.02-2.0-wt.% of silicon oxide particles synthesized by dry process, having 5-50mum in average primary particle diameter, with the silanol groups on the particle surface blocked at >=40mol% with a trimethylsilyl, derivative. Besides, this fiber has the following physical properties: tan delta peak temperature (Tmax): =1.370g/cm ; and birefringence: >=0.085. The original polymer, because of being highly stable in particle dispersibility, causes only a small rise in the pressure inside the pack, and leads to stable operation such as low yarn breakages during spinning process.
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公开(公告)号：JPH07238415A
公开(公告)日：1995-09-12
申请号：JP2967494
申请日：1994-02-28
Applicant: TORAY INDUSTRIES
Inventor： MAEDA YUHEI , TANIGUCHI MASAHARU , FUKUHARA MOTOTADA
Abstract: PURPOSE:To reduce end breakage, stabilize a melt spinning process and improve the properties capable of passing through the processes in higher order processing by admixing a sterol as an end breakage inhibitor with a thermoplastic synthetic polymer and pelt skinning it. CONSTITUTION:With a thermoplastic synthetic polymer, 0.005 to 5wt.%, preferably 0.01 to 2wt.% sterol such as beta-sitosterol is admixed and the resultant mixture is subjected to melt spinning. In the case of a polyester or nylon, addition of the sterol is carried out preferably according to the melt kneading method.
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公开(公告)号：JPH07157914A
公开(公告)日：1995-06-20
申请号：JP30265293
申请日：1993-12-02
Applicant: TORAY INDUSTRIES
Inventor： MIZUHASHI MOTOI , AISO HARUO , MAEDA YUHEI
Abstract: PURPOSE:To uniformize the environmental temperature profile in a heat- treatment cylinder, improve the maintainability of apparatus and improve the threading performance by placing a specific apparatus for suppressing the inflow and outflow of air at an upper part or a lower part of a heat-treatment cylinder for a hot-tube draw-spinning process. CONSTITUTION:The slit 9 of an apparatus for suppressing the inflow and outflow of air is formed of front and rear guides 11, 11' and left and right guides 12, 12' dividable by horizontally sliding or rotating through guide-attaching members 10, 10'. The apparatus for suppressing the inflow and outflow of air is opened in the case of threading and closed in winding to suppress the flow of air between the inside and the outside of a heat-insulation zone.
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Patent Agency Ranking
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.
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公开(公告)号：JPH04245917A
公开(公告)日：1992-09-02
申请号：JP1011291
申请日：1991-01-30
Applicant: TORAY INDUSTRIES
Inventor： YOSHIZAWA HIROAKI , MAEDA YUHEI , FUKUHARA MOTOTADA
Abstract: PURPOSE:To obtain the subject fiber, having soft hand and easy dyeability and useful as spunbonded nonwoven fabrics with excellent yarn manufacturing properties by taking off a polyester, containing a specific amount of an aliphatic dicarboxylic acid and having a specified intrinsic viscosity at an ultra-high speed. CONSTITUTION:The objective fiber is obtained by taking off a polyester, containing a dicarboxylic acid component consisting essentially of terephthalic acid, in which 2-20mol% (preferably 6-13mol%) of the total dicarboxylic acid is a >=8C aliphatic dicarboxylic acid, and a diol component consisting essentially of ethylene glycol and having 0.40-0.60dl/g intrinsic viscosity [eta] determined by using an o-chlorophenol solution at 25 deg.C at >=7500m/min take-off speed.
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公开(公告)号：JPH04202804A
公开(公告)日：1992-07-23
申请号：JP33544990
申请日：1990-11-29
Applicant: TORAY INDUSTRIES
Inventor： MAEDA YUHEI , SASAMOTO FUTOSHI , FUKUHARA MOTOTADA
IPC: D01D5/08
Abstract: PURPOSE:To enable the subject melt spinning excellent in productivity by, in melt spinning of a thermoplastic polymer, discharging the polymer through a spinning nozzle and passing the spun fiber in an atmosphere of low- temperature plasma before cooling and coagulation. CONSTITUTION:In melt spinning of a thermoplastic polymer such as polyethylene terephthalate at >=8000m/min take-up rate, the above-mentioned polymer is discharged through a spinning nozzle and, before cooling and solidification, passed through in an atmosphere of low-temperature plasma in a non- polymerizable gas such as Ar under vacuum of
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公开(公告)号：JPH04136206A
公开(公告)日：1992-05-11
申请号：JP25245790
申请日：1990-09-21
Applicant: TORAY INDUSTRIES
Inventor： HIRAI SATOSHI , MAEDA YUHEI , FUKUHARA MOTOTADA
Abstract: PURPOSE:To obtain the title pack capable of preventing cloggings, etc., in the melt spinning of ultrafine filament yarns by setting up, immediate before a spinneret, a filter with a nonwoven fabric comprising matallic fiber sandwiched by flat packings and the edge face enclosed by another flat packing. CONSTITUTION:A filter 11 composed of a non-woven fabric comprising metallic fiber sandwiched by falt packings 7, 8 with said fabric's edge face enclosed by another flat packing 9 is set up immediately before a spinneret 5 with the sectional area per delivery hole 1 of 2.0X10 mm .
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公开(公告)号：JPH03185113A
公开(公告)日：1991-08-13
申请号：JP32538689
申请日：1989-12-14
Applicant: TORAY INDUSTRIES
Inventor： SASAMOTO FUTOSHI , MAEDA YUHEI , MITSUYOSHI TAKEHIKO
Abstract: PURPOSE:To obtain a polyester fiber having excellent yarn tenacity, color- developing property and dimensional stability and suitable for clothes by drawing a polyester fiber composed of a specific acid component and a specific glycol component in a low-temperature plasma atmosphere. CONSTITUTION:A polyester fiber having improved clarity and feeling can be produced without raising the production cost by providing a polyester fiber copolymerized with ana acid component containing 1.0-6.0mol% (preferably 1.5-3.0mol%) of an isophthalic acid having metal sulfonate group [preferably dimethyl(5-sodium sulfo)isophthalate, etc.] and/or a glycol component containing 0.5-10wt.% (preferably 1-4.5wt.%) of a polyalkylene glycol of formula (A is ClH2l+1O or OH; l is 1-10; n is 2-5; m is 3-100) and drawing the polyester fiber in a low-temperature plasma atmosphere.
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