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公开(公告)号：JPH09176911A
公开(公告)日：1997-07-08
申请号：JP34084195
申请日：1995-12-27
Applicant: TORAY INDUSTRIES
Inventor： TANIGUCHI MASAHARU , ARANISHI YOSHITAKA , FUKUHARA MOTOTADA
Abstract: PROBLEM TO BE SOLVED: To suppress the stacking of sediments on the fringe of a spinning nozzle while uniformly keeping the cross sectional shape and the diameter of the textiles in melt spinning a polyester added with a calcium salt such as calcium acetate, etc., by forming the fringe of the spinning nozzle with a ceramic and arranging the roughness of the inner surface of the spinning nozzle less than a specific value. SOLUTION: This fringe of the spinning nozzle 1 for extruding polyester added with a glycol soluble calcium salt is formed with ceramics and the roughness of the inner wall of the nozzle 1 is set at >=0.1S. This process is especially effective when the outlet shape of the extruding nozzle 4 has multifoliate shape.
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公开(公告)号：JPH09119022A
公开(公告)日：1997-05-06
申请号：JP27864195
申请日：1995-10-26
Applicant: TORAY INDUSTRIES
Inventor： KIDAI AKIRA , MASUDA TOYOHIKO , FUKUHARA MOTOTADA
Abstract: PROBLEM TO BE SOLVED: To obtain the subject monofilament that excels in effect of suppressing scum formation in screen gauze weaving because of containing a specific quantity of a modified block copolymer, and has high mechanical strength and high modulus of elasticity, which are necessary for precision screen printing. SOLUTION: This polyester monofilament for screen gauze is a sheath-core type conjugate monofilament having 6g/d or higher breaking strength, 3.5g/d or larger elastic modulus at an elongation of 10%, and where the core component is composed of a polyethylene terephthalate, and the sheath component contains 0.5-40wt.% of a modified block copolymer obtained by melt-kneading, in the presence of an organic peroxide, a block copolymer composed of the following components (a), (b) and (c): (a) 25-98.99wt.% of a propylene-ethylene random copolymer component composed of 85-20mol% of a propylene-based monomer unit and 15-80mol% of an ethylene-based monomer unit, (b) 1-70wt.% of a polypropylene component, and (c) 0.01-5wt.% of polybutene.
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公开(公告)号：JP2541322B2
公开(公告)日：1996-10-09
申请号：JP30499589
申请日：1989-11-24
Applicant: TORAY INDUSTRIES
Inventor： MAEDA JUHEI , HIRAI SATOSHI , FUKUHARA MOTOTADA
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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：JPH0693506A
公开(公告)日：1994-04-05
申请号：JP24182192
申请日：1992-09-10
Applicant: TORAY INDUSTRIES
Inventor： TANIGUCHI MASAHARU , FUKUHARA MOTOTADA , NAKAMURA SHUSEI
Abstract: PURPOSE:To improve uniformity of flow of a discharged polymer by specifying a polymer discharge hole of a spinneret. CONSTITUTION:A polymer discharging hole is constituted of a flow-in part facing to the inlet of the polymer, a throttling part 4 and a discharge part 5 and diameters of the flow-in part, the throttling part and the discharge part are each made continuously smaller at angles of 0-3 degree, 20-50 degree and 3-20 degree to the center axis of the discharge hole. The ratio (L/D) of length L of a discharge part to diameter D of outlet of discharge hole is set to 1-10 and the diameter D is set to 0.1-0.5mm. The length (d) of chamfer of outlet part of discharge hole = (D-D')/2 is set to 3-30mum (D' is minimum pore diameter of polymer discharge hole).
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Patent Agency Ranking
公开(公告)号：JPH0525709A
公开(公告)日：1993-02-02
申请号：JP17657191
申请日：1991-07-17
Applicant: TORAY INDUSTRIES
Inventor： ONDA TAKAYOSHI , KIDAI AKIRA , FUKUHARA MOTOTADA
Abstract: PURPOSE:To obtain three-layer conjugate monofilament for printing screen plan gauze free from scum during weaving, having specific mechanical properties, comprising a three-layer conjugate structure composed of specific polyethylene terephthalate based resins. CONSTITUTION:The objective monofilament which has a three-layer conjugate structure composed of (A) an outer layer of a polyethylene terephthalate obtained by copolymerizing polyethylene glycol and/or polytetramethylene glycol, having =60% based on the whole components by area ratio, >=5.5g/d break strength, >=4.5g/d modulus at 10% extension point and >=120g/d initial tensile resistance and has no static electricity generation in handing and printing of plain gauze.
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公开(公告)号：JPH055208A
公开(公告)日：1993-01-14
申请号：JP15176691
申请日：1991-06-24
Applicant: TORAY INDUSTRIES
Inventor： YOSHIZAWA HIROAKI , TATSUMI HIROAKI , FUKUHARA MOTOTADA
Abstract: PURPOSE:To obtain in high productivity the title fiber excellent in both mechanical strength and elongation characteristics by using a polyester having a specific copolymerized component to enable the winding speed to be enhanced in the direct spinning and drawing process. CONSTITUTION:Firstly, a melt spinning is made for a polyester made up of (A) dicarboxylic acid component predominant in terephthalic acid with >=8C aliphatic dicarboxylic acid (pref. of 8-16C, such as suberic acid) accounting for 2-20mol% of the whole dicarboxylic acid component and (B) diol component predominant in ethylene glycol, followed by cooling and solidifying the resultant filament yarn which is then oiled and taken up by the first godet roller 5 at >=5000m/min followed by drawing and heat treatment between said first godet roller 5 and the second godet roller 6, thus obtaining the objective fiber. For the drawing and heat treatment, it is recommended that the circumferential speed of the second godet roller 6 be set so as to be higher than that of the first godet roller 5 and the surface of the roller 6 heated.
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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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