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公开(公告)号：JPH05125638A
公开(公告)日：1993-05-21
申请号：JP28636691
申请日：1991-10-31
Applicant: TORAY INDUSTRIES
Inventor： ONDA TAKAYOSHI , KIDAI AKIRA , FUKUHARA MOTOTADA
Abstract: PURPOSE:To obtain the screen plain gauze woven fabric prevented in the slippage of knots caused by squeezing abrasion, by employing sheath-core type thermally adhesive conjugated monofilaments as at least either of warps or wefts and bonding the tissue points. CONSTITUTION:Woven fabric for screen plain gauze is produced by employing sheath-core type conjugate polyester monofilaments having a core part melting point of >=250 deg.C and a sheath part melting point of
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公开(公告)号：JPH0598512A
公开(公告)日：1993-04-20
申请号：JP26185591
申请日：1991-10-09
Applicant: TORAY INDUSTRIES
Inventor： YOSHIZAWA HIROAKI , TATSUMI HIROAKI , FUKUHARA MOTOTADA
IPC: D01F6/62 , D01F6/84 , D06M13/02 , D06M13/192 , D06M15/507 , D06M101/00 , D06M101/16 , D06M101/30 , D06M101/32
Abstract: PURPOSE:To obtain the subject fiber, composed of a specific copolymerized polyethylene terephthalate, having specified properties, excellent in soft hand, strength and elongation characteristics and good in dyeability and light fastness. CONSTITUTION:The objective fiber is obtained by spinning polyethylene terephthalate copolymerized with a >=8C aliphatic dicarboxylic acid (preferably an 8-22C aliphatic dicarboxylic acid) in an amount of 2-22mol% (preferably 6-13mol%) based on the whole dicarboxylic acid. The fiber has >=4.0g/d strength, >=30% elongation and
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公开(公告)号：JPH0551868A
公开(公告)日：1993-03-02
申请号：JP21059491
申请日：1991-08-22
Applicant: TORAY INDUSTRIES
Inventor： ONDA TAKAYOSHI , KIDAI AKIRA , FUKUHARA MOTOTADA
IPC: D01F6/62 , B41N1/24 , D01F8/14 , D03D15/00 , D06M11/00 , D06M11/38 , D06M101/00 , D06M101/16 , D06M101/30 , D06M101/32
Abstract: PURPOSE:To provide a screen gauze having excellent ink-permeability and suitable for high-precision printing. CONSTITUTION:The objective printing screen gauze is produced by forming a screen gauze with a core-sheath conjugate monofilament having a strength of >=5.5g/d and consisting of a sheath component composed of a polyester component having high rate of dissolution in an alkaline solvent and a core component composed of a polyester component having a dissolution rate smaller than that of the sheath component and thinning the obtained gauze with an alkaline solvent. A high-mesh screen gauze maintaining an opening area in high precision and having high ink-permeability can be produced by this process.
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公开(公告)号：JPH055209A
公开(公告)日：1993-01-14
申请号：JP15323291
申请日：1991-06-25
Applicant: TORAY INDUSTRIES
Inventor： ONDA TAKAYOSHI , KIDAI AKIRA , FUKUHARA MOTOTADA
Abstract: PURPOSE:To provide the title monofilament having specific physical properties, excellent in mechanical strength and stress relaxation characteristics etc., also causing no scumming during the weaving process, made up of polyethylene terephthalate as sheath component and polyethylene naphthalate as core component. CONSTITUTION:The objective monofilament >=160g/d in elastic modulus and >=5000sec in stress relaxation time, made up of (A) as sheath component, polyethylene terephthalate or a modified polyester predominant in polyethylene terephthalate and (B) as core component, polyethylene-2,6-naphthalate. For the stress relaxation time to be attained at >=5000sec., it is recommended that the monofilament tension be set at >=0.4g/d in the cold stretching treatment after hot drawing; for this purpose, the cold stretch ratio is recommended to set at >=1.01.
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公开(公告)号：JPH04300311A
公开(公告)日：1992-10-23
申请号：JP6449791
申请日：1991-03-28
Applicant: TORAY INDUSTRIES
Inventor： FUKUHARA MOTOTADA
IPC: D01D4/02
Abstract: PURPOSE:To prevent the staining of the surface of a spinneret and the abrasion of the end of the spinneret due to the continuous melt-spinning of the polymer, reduce the frequency of cleaning works and stably melt-spin a thermoplastic polymer for a long period of time by employing an amorphous chromium-plated spinneret as the spinneret. CONSTITUTION:When a thermoplastic polymer such as polyethylene terephthalate prepared from terephthalic acid and ethylene glycol in the presence of antimony trioxide as a catalyst is continuously melt-spun, a spinneret whose surface is plated with amorphous chromium and which is subsequently subjected to a thermal treatment at 400 deg.C for 2hr is employed, and the surface of the spinneret is coated with a silicone mold-releasing agent consisting mainly of dimethyl silicone, thereby permitting to prevent the staining of the surface of the spinneret and the abrasion of the end of the spinneret and to stably produce high quality fibers over a long period of time.
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Patent Agency Ranking
公开(公告)号：JPH04299115A
公开(公告)日：1992-10-22
申请号：JP6449991
申请日：1991-03-28
Applicant: TORAY INDUSTRIES
Inventor： FUKUHARA MOTOTADA
IPC: B29C48/305 , B29K67/00 , B29L7/00 , C23C14/14 , C23C30/00
Abstract: PURPOSE:To eliminate the fault of a product and to mold a sheetlike article having uniform thickness by using a cap whose surface is plated with amorphous chromium when a thermoplastic polymer is formed into a sheet shape by melt extrusion. CONSTITUTION:When a thermoplastic polymer capable of being formed into a sheet in general by melt molding such as polyester, polyamide or polyolefin is extruded in a sheet shape by melt extrusion using a slitlike cap such as a T-die or an L-die, the cap whose surface is plated with amorphous chromium is used. The thickness of the plating layer of amorphous chromium is set to 0.1mum or more. By this method, a plating surface generating no crack or pinhole can be formed to the cap and the contaminant based on the thermally decomposed matter from the molten polymer is not bonded to the surface of the cap and the stripe fault generated on the surface of a cast film is certainly prevented.
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公开(公告)号：JPH0473207A
公开(公告)日：1992-03-09
申请号：JP18342890
申请日：1990-07-11
Applicant: TORAY INDUSTRIES
Inventor： YOSHIZAWA HIROAKI , TATSUMI HIROAKI , FUKUHARA MOTOTADA
Abstract: PURPOSE:To obtain the subject fiber having a volume resistivity smaller than a specific level, exhibiting transparent feeling, luster and color-developing property and having excellent antistatic property independent of humidity by using alumina particles having a specific electrically conductive coating film as an additive. CONSTITUTION:The objective fiber contains alumina particles having an average particle diameter of OMEGA.cm, preferably OMEGA.cm.
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公开(公告)号：JPH03185112A
公开(公告)日：1991-08-13
申请号：JP32134289
申请日：1989-12-13
Applicant: TORAY INDUSTRIES
Inventor： SASAMOTO FUTOSHI , KONNO YOSHIHIRO , FUKUHARA MOTOTADA
Abstract: PURPOSE:To obtain a polyester fiber for forming, having specific elongation and dry-heat shrinkage and exhibiting excellent moldability and dimensional stability to heat by using an undrawn polyester yarn having specific intrinsic viscosity and birefringence as a raw material and heat-treating the yarn at a specific temperature. CONSTITUTION:The objective polyester fiber for forming has an intrinsic viscosity of >=0.76, a birefringence of 1.5X10 -19X10 , an elongation of >=250% (preferably >=400%) and a dry-heat shrinkage of 0-40% (preferably 0-20%) at 130 deg.C and is suitable as a ground yarn of a woven or knit pile fabric. It can be produced by using an undrawn polyester yarn containing ethylene terephthalate as main recurring unit and having an intrinsic viscosity of >=0.76 (preferably >=0.85) and a birefringence of 3X10 -19X10 (preferably 3X10 -10X10 ) as a raw material and heat-treating the yarn at >=130 deg.C (preferably >=160 deg.C).
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公开(公告)号：JPH0397937A
公开(公告)日：1991-04-23
申请号：JP22957689
申请日：1989-09-05
Applicant: TORAY INDUSTRIES
Inventor： ONDA TAKAYOSHI , FUKUHARA MOTOTADA , OKAMOTO TAKAHARU
IPC: B41N1/24 , D03D1/00 , D06M13/02 , D06M13/184 , D06M13/203 , D06M13/322 , D06M13/402 , D06M13/41 , D06M14/14 , D06M101/00 , D06M101/16 , D06M101/30 , D06M101/32
Abstract: PURPOSE:To obtain the subject woven fabric keeping various characteristics of polyester fiber such as dimensional stability and high strength, having improved affinity to a photosensitive emulsion and exhibiting excellent printing accuracy and print resistance by graft-polymerizing a hydrophilic vinyl monomer to a polyester fiber. CONSTITUTION:The objective woven fabric is produced by graft-polymerizing a hydrophilic vinyl monomer (e.g. acrylic acid) to a polyester fiber at a grafting ratio of preferably 0.3-5%. The graft-polymerization to the polyester fiber is preferably carried out after the scouring, drying and intermediate setting of a woven polyester fiber in order to eliminate the generation of uneven grafting and prevent the wrinkling. The polyester fiber is preferably a monofilament composed of polyethylene terephthalate.
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公开(公告)号：JPH02289120A
公开(公告)日：1990-11-29
申请号：JP858190
申请日：1990-01-17
Applicant: TORAY INDUSTRIES
Inventor： ITO YOSHIMITSU , FUKUHARA MOTOTADA , KIDAI AKIRA
Abstract: PURPOSE:To provide the subject fiber consisting of a sheath-core conjugate monofilament containing a polymer having low glass-transition point solely in the sheath component, having specific physical properties, exhibiting high tenacity and high modulus suitable for precision printing and having fine denier to enable high-mesh printing. CONSTITUTION:The objective fiber is a sheath-core conjugate monofilament composed of a polyester having the following properties. The stress at break is >=6g/d; the modulus at an elongation of 10% is >=3.5g/d; the elongation at break is =0.55.
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