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公开(公告)号：JPH0465525A
公开(公告)日：1992-03-02
申请号：JP17854990
申请日：1990-07-05
Applicant: TORAY INDUSTRIES , TORAY MONOFILAMENT CO
Inventor： NISHIKAWA YUTAKA , NAKADA HIDEO , SATO TAKUJI , SAITO HIROSHI
Abstract: PURPOSE:To obtain the title monofilament excellent in resistance to heat and chemicals, tensile strength, knot strength, flexural wear resistance etc., suitable for the fabrics for papermaking canvas and filters, etc. by melt spinning a polyphenylene sulfide with an ionomer resin dispersed in a specified island fashion therein. CONSTITUTION:(A) A polyphenylene sulfide 10 - 150 in melt flow rate is incorporated with (B) 5 - 20 wt.% of an ionomer resin prepared by copolymerization between (1) an alpha-olefin such as ethylene and (2) an alpha,beta-ethylene-based unsaturated carboxylic acid followed by crosslinking with metallic ion, and a melt blending is carried out, and the melt is then extruded, via a metallic fiber nonwoven fabric filter of pref. = 95 wt.% of the component B forming island component 0.5 - 4 mum in diameter on the cross section.
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公开(公告)号：JPH01162818A
公开(公告)日：1989-06-27
申请号：JP31984987
申请日：1987-12-16
Applicant: TORAY INDUSTRIES
Inventor： NISHIKAWA YUTAKA , MITSUYOSHI TAKEHIKO , FUJIOKA KOTARO
IPC: C08F255/02 , C08F255/00 , D01F6/04 , D01F6/46
Abstract: PURPOSE:To obtain the subject fiber of high strength and high modulus, low in creep, by heat treatment, at specified temperatures, of a high-molecular weight polyethylene solution incorporated with an organic compound having two or more vinyl groups followed by spinning and then hot drawing of the resultant undrawn yarn. CONSTITUTION:A solution of polyethylene with a weight-average molecular weight of $.700,000, incorporated with pref. 2-20wt.% of an organic compound having two or more vinyl groups (pref. soluble in the solvents for polyethylene, e.g., diarylphthalate, triaryl isocyanurate, divinylbenzene) is heat treated at temperatures at or higher than the swelling temperature of said polyethylene followed by spinning and then hot drawing of the resultant undrawn yarn pref. at 100-160 deg.C, thus obtaining the objective fiber.
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公开(公告)号：JPS62191508A
公开(公告)日：1987-08-21
申请号：JP3268486
申请日：1986-02-19
Applicant: TORAY INDUSTRIES
Inventor： MITSUYOSHI TAKEHIKO , NISHIKAWA YUTAKA , FUJIOKA KOTARO
Abstract: PURPOSE:To obtain polyethylene multifilament yarn free from adherence between single yarn, using a proper spinning bath, taking up yarn at a proper speed and extracting and removing a remaining solvent in the coagulated yarn with an extractant. CONSTITUTION:1-20wt% (preferably 3-10wt%) solution of a polyethylene having >=700,000 (preferably >=2,000,000) weight-average molecular weight is extruded from a spinning nozzle. Yarn is passed through an inert gas layer and a spinning bath of two layer structure having an upper layer of a cooling agent uncompatible with a solvent and a lower layer of a coabulating agent (higher specific gravity than cooling agent) compatible with the solvent and uncompatible with the cooling agent. The yarn is taken up at >=10m/min speed and the solvent in the yarn is successively extracted and removed with an extractant. The depth of the upper layer of the spinning bath satisfied the formula.
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公开(公告)号：JPS62184112A
公开(公告)日：1987-08-12
申请号：JP2486986
申请日：1986-02-06
Applicant: TORAY INDUSTRIES
Inventor： MITSUYOSHI TAKEHIKO , NISHIKAWA YUTAKA , FUJIOKA KOTARO
IPC: D01F6/04
Abstract: PURPOSE:To obtain the titled fiber having excellent tensile strength, initial modulus, etc., with a compact-sized apparatus on an industrial scale, by spinning and drawing a spinning dope of high-molecular-weight PE under specific condition, winding the drawn yarn and hot-drawing the yarn under specific condition. CONSTITUTION:A spinning dope produced from a 1-20wt% solution of PE having a weight-average molecular weight of >=700,000 is hot-drawn at a yarn- feeding rate of 10-50m/min (preferably 20-50m/min) and a draw ratio of 5-15 (preferably 5-12) and the drawn fiber is temporarily wound. The fiber is further hot-drawn at a yarn-feeding rate of 3-45m/min, preferably 20-45m/min and draw-retention time (ratio of length of drawing zone to feeding speed of yarn) of 1-20min, preferably 3-10min. The total draw ratio if >=30, preferably >=40.
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公开(公告)号：JPS62184111A
公开(公告)日：1987-08-12
申请号：JP2486886
申请日：1986-02-06
Applicant: TORAY INDUSTRIES
Inventor： NISHIKAWA YUTAKA , MITSUYOSHI TAKEHIKO , OKAMOTO HIDEHIRO
IPC: D01F6/04 , D06M10/00 , D06M10/02 , D06M101/00 , D06M101/16 , D06M101/18 , D06M101/20 , D06M101/22
Abstract: PURPOSE:To provide a polyethylene filament having specific molecular weight, N/C atomic ratio, tensile strength, initial modulus, dynamic visco-elastic characteristics and small angle X-ray scattering characteristics, useful as a light-weight reinforcing material for polar polymeric matrix material and exhibiting high adhesive strength. CONSTITUTION:The objective polyethylene filament has a weight-average molecular weight of >=1,000,000; ratio of the number of oxygen atom to nitrogen atom of 0.03-0.15 on the filament surface (determined by ESCA); a single filament tensile strength of >=40g/d; a single filament initial modulus of >=1,200g/d; the height of gamma-dispersion peak of tandelta of =600g/d (at 100 deg.C) determined by dynamic viscoelastic measurement; and is free from long-period structure by small-angle X-ray scattering. The filament can be produced by drawing a filament produced by a spinning method characterized by the coagulation after gelation and passing through a low- temperature plasma generated in vapor of ammonia or a nitrogen-containing organic compound having low boiling point.
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Patent Agency Ranking
公开(公告)号：JPS61611A
公开(公告)日：1986-01-06
申请号：JP11817184
申请日：1984-06-11
Applicant: TORAY INDUSTRIES
Inventor： NISHIKAWA YUTAKA , MIZUNO MASAHARU , FUJIOKA KOUTAROU
Abstract: PURPOSE:To obtain the titled inexpensive yarn having high quality, by spinning a solution of an ultra-high-molecular-weight polyolefin, predrawing it, drying it, drawing it further in a multiple stage under specific conditions. CONSTITUTION:A polyolefinic polymer such as straight-chain high-density polyolefin, etc. having >=5X10 weight-average molecular weight is dissolved in a solvent such as decalin, etc. to prepare 5-15wt% solution. The solution is then spun, it is once drawn at
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公开(公告)号：JPH05148702A
公开(公告)日：1993-06-15
申请号：JP31221891
申请日：1991-11-27
Applicant: TORAY INDUSTRIES
Inventor： NISHIKAWA YUTAKA , SATO TAKUJI
IPC: A01K91/00 , A41B11/00 , A41B17/00 , D01F6/60 , D02J1/22 , D06M10/00 , D06M10/02 , D06M101/00 , D06M101/16 , D06M101/30 , D06M101/34
Abstract: PURPOSE:To obtain the subject filament excellent in high strength, elongation and modulus as well as excellent dimensional stability to heat by drawing an intermediately oriented polyamide filament under specific conditions. CONSTITUTION:An intermediately oriented polyamide monofilament Y having >=3.0 relative viscosity in sulfuric acid and 20X10 to 45X10 double refractive index is drawn in a ratio of 1.5 to 5.0 times using a discharge part in ordinary pressure atmosphere containing >=60mol% rare gas elements. The discharge part is formed by voltage applied to a pair of electrodes 1 and 2 in which electrode surface on at least one side is coated with dielectric substances 3 and 4.
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公开(公告)号：JPH04327213A
公开(公告)日：1992-11-16
申请号：JP9906991
申请日：1991-04-30
Applicant: TORAY INDUSTRIES
Inventor： NISHIKAWA YUTAKA , SATO TAKUJI
Abstract: PURPOSE:To provide a core-sheath conjugate fiber having excellent heat- resistance, chemical resistance, mechanical properties, durability to bending and peeling resistance at the core-sheath interface and useful as industrial fiber. CONSTITUTION:The core component of the core-sheath conjugate fiber is composed of a polyamide and the sheath component is composed of a modified polyphenylene sulfide produced by reacting a polyphenylene sulfide with 0.05-10wt.% of a carboxylic acid anhydride. The polyamide of the core component accounts for 80-25wt.% of the total conjugate fiber and the surface of the fiber is exclusively formed of the modified polyphenylene sulfide.
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公开(公告)号：JPH04136212A
公开(公告)日：1992-05-11
申请号：JP25229790
申请日：1990-09-20
Applicant: TORAY INDUSTRIES
Inventor： NISHIKAWA YUTAKA , SATO TAKUJI
Abstract: PURPOSE:To obtain the subject fiber having a high strength, excellent in knot strength and useful as a fish net, a rope, etc., by reducing the degree of orientation of only the surface layer part of a highly orientated polyvinylidene fluoride monofilament using a specified method. CONSTITUTION:An infrared laser is applied to a polyvinylidene fluoride monofilament having >=25X10 birefringence coefficient to melt only the surface layer. The molten surface layer is then solidified again so that the degree of orientation of the surface layer may be reduced, thus obtaining the objective fiber having 0.013-0.09 ratio (r/R) of the thickness (r) of the above-mentioned low orientated surface layer to the radius (R) of the monofilament. In addition, the above-mentioned infrared laser is preferably applied from the multi-directions around the monofilament so as to prevent the resultant monofilament from having an asymmetrical structure with respect to the fiber axis.
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公开(公告)号：JPH0465521A
公开(公告)日：1992-03-02
申请号：JP17855090
申请日：1990-07-05
Applicant: TORAY INDUSTRIES
Inventor： NISHIKAWA YUTAKA , NAKADA HIDEO , SATO TAKUJI
Abstract: PURPOSE:To obtain the subject monofilament having excellent heat-resistance, chemical resistance, tensile strength, knot strength and flexural abrasion resistance and suitable for a woven fabric for paper-manufacturing canvas, etc., by mixing an ionomer resin to a specific polyphenylene sulfide, spinning the mixture at a low spinning draft and heat-drawing the spun monofilament. CONSTITUTION:A polyphenylene sulfide having an ash content of
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