公开(公告)号：JP2000226737A

公开(公告)日：2000-08-15

申请号：JP2946799

申请日：1999-02-08

Applicant: TORAY INDUSTRIES

Inventor： TAWARA AKIO ,  OKUMURA YOSHIHARU ,  MAEDA YUHEI

IPC: D01F1/04 ,  D01F1/10 ,  D01F8/14

Abstract: PROBLEM TO BE SOLVED: To produce a conjugate fiber having a high specific gravity and a high strength, excellent in high color developing properties and abrasion resistance and useful for fishing nets, curtains, etc., by providing the fiber with a prescribed value or above of particle content in the conjugate fiber and further the core part with discontinuous voids such as a spherical shape. SOLUTION: This conjugate fiber is a core-sheath type conjugate fiber comprising a core part which is an aliphatic polyester having =15 wt.% and the core part has discontinuous spherical or ellipsoidal voids therein. Furthermore, the conjugate fiber preferably contains a pigment in the core component and/or the sheath component. The conjugate fiber is obtained by including >=20 wt.% of the particles in the core component, carrying out the core-sheath conjugate spinning, drawing the resultant fiber, heat-treating the drawn fiber and conducting the relaxing treatment of the heat-treated fiber.

公开(公告)号：JPH11350293A

公开(公告)日：1999-12-21

申请号：JP15505298

申请日：1998-06-03

Applicant: TORAY INDUSTRIES

Inventor： KAWAKAMI DAISUKE ,  TAWARA AKIO ,  MAEDA YUHEI

IPC: E02B3/04 ,  D03D15/00

Abstract: PROBLEM TO BE SOLVED: To produce a net resistant to shock of heavy material, etc., by using a thermoplastic synthetic fiber having respectively specific single fiber fineness, strength and elongation and setting the mesh size of the net within a specific range. SOLUTION: A knotless net or a raschel net is knit with a polyester or polyamide thermoplastic synthetic fiber having a total fineness of >=550 dtex, a single fiber fineness of =6.0 CN/dtex and an elongation of 15-40% to obtain a net having a mesh size of 10-200 mm, preferably 15-50 mm.

公开(公告)号：JPH11350291A

公开(公告)日：1999-12-21

申请号：JP15505098

申请日：1998-06-03

Applicant: TORAY INDUSTRIES

Inventor： KAWAKAMI DAISUKE ,  TAWARA AKIO ,  MAEDA YUHEI

IPC: E02B3/12 ,  B09B1/00 ,  D03D15/00

Abstract: PROBLEM TO BE SOLVED: To obtain a sheet for civil engineering work strong to impacts strength caused from heavy goods or the like by comprising a thermoplastic synthetic fiber which has denier less than a specific value, as warp and/or weft. SOLUTION: This sheet for civil engineering work is obtained by using the thermoplastic synthetic fiber which has 6.0 cN/dtex = filament denier, such as polyester filaments or polyamide filaments as the warp and/or weft to form a plain weave or the like having texture of 1000 to 1000000 dtex/in.

公开(公告)号：JPH11350289A

公开(公告)日：1999-12-21

申请号：JP15505398

申请日：1998-06-03

Applicant: TORAY INDUSTRIES

Inventor： KAWAKAMI DAISUKE ,  TAWARA AKIO ,  MAEDA YUHEI

IPC: D03D15/00

Abstract: PROBLEM TO BE SOLVED: To obtain a net strong to impact strength caused from heavy goods or the like by composing of a thermoplastic synthetic fiber having coefficient of dynamic friction less than the specific value obtained by adhering one selected from an organic silicone compound, an organic fluorine containing compound or a polymer wax. SOLUTION: This net is obtained by treating the surface of the thermoplastic filaments having 3.0 dtex >= filament denier, 6.0 cN/dtex

公开(公告)号：JPH11200145A

公开(公告)日：1999-07-27

申请号：JP626398

申请日：1998-01-16

Applicant: TORAY INDUSTRIES

Inventor： MATSUMOTO HIROSHIGE ,  MAEDA YUHEI ,  TAKAHASHI HIROSHI

IPC: D01F6/92

Abstract: PROBLEM TO BE SOLVED: To stably and efficiently produce a polyester fiber having a high strength and a high elongation in combination. SOLUTION: This polyester fiber contains an aromatic ketone having =5 g/d strength T [g/d], >=20% elongation E [%] and >=220 toughness TO [g/d.%] represented by the following formula: formula: TO=T×E.

公开(公告)号：JPH09157949A

公开(公告)日：1997-06-17

申请号：JP32450495

申请日：1995-12-13

Applicant: TORAY INDUSTRIES

Inventor： TAGAYA MINORU ,  KOBAYASHI HISAAKI ,  MAEDA YUHEI

IPC: D01F6/62 ,  D01F1/10 ,  D01F6/92

Abstract: PROBLEM TO BE SOLVED: To obtain a polyester yarn useful for woven and knit fabric, etc., extremely slight in sagging/fluff/end breakage, excellent in yarn qualities, by melting and extruding a polyester containing a fixed amount of a specific silicon oxide particle, cooling, introducing a cooled yarn to a heating zone and drawing. SOLUTION: A polyester which contains 0.02-5.0wt.% of a silicon oxide particle coated with 0.1-10wt.% (based on the particle) of a straight-chain silicone oil, having 5-45nm average primary particle diameter, practically synthesized by a dry method and has >=0.50dl/g intrinsic viscosity is melted and extruded from a spinneret, cooled, introduced into a heating zone and drawn to give the objective polyester yarn.

公开(公告)号：JPH08291426A

公开(公告)日：1996-11-05

申请号：JP9051195

申请日：1995-04-17

Applicant: TORAY INDUSTRIES

Inventor： KOBAYASHI HISAAKI ,  TAGAYA MINORU ,  MAEDA YUHEI

IPC: D01F6/62 ,  C08K9/06 ,  C08L67/00 ,  D01D5/12 ,  D01F1/10 ,  D01F6/92

Abstract: PURPOSE: To obtain a polyester fiber having homogenous fiber quality without generating slack, naps and yarn breakage by treating the surface of silicon oxide particles synthesized by a dry method with a trimethylsilyl derivative, mixing the treated silicon oxide particles into a polyester and not tube spinning the mixture. CONSTITUTION: A polyester containing silicon oxide particles synthesized substantially by dry method and having an average primary-particle size of 5-50mμ in an amount of >=0.02wt.% is extruded in a melt state from a spinneret. The obtained fiber is cooled, then introduced into a heating zone and drawn. The surface of the silicon oxide used in the above process has been treated with a trimethylsilyl derivative and >=40% of silanol groups of the surfaces of silicon oxide particles are blocked to improve compatibility with the polyester and dispersibility in it.

公开(公告)号：JPH08109517A

公开(公告)日：1996-04-30

申请号：JP23986594

申请日：1994-10-04

Applicant: TORAY INDUSTRIES

Inventor： MAEDA YUHEI ,  FUKUOKA MITSURU ,  FUKUHARA MOTOTADA

IPC: D02G3/04 ,  D01F6/62 ,  D01F8/14

Abstract: PURPOSE: To suppress the yarn breakage and stably produce bimetallic conjugated fibers capable of well manifesting crimps in producing the fibers according to a high-speed spinning method. CONSTITUTION: Two kinds of polyesters A and B having 5.0-15.0mol% difference in copolymerization ratio between the components (A) and (B), >=0.6 intrinsic viscosity and =4000m/min with the take-off roller, in producing polyester fibers in which the polyesters A and B are compounded into a side-by-side state.

公开(公告)号：JPH0859080A

公开(公告)日：1996-03-05

申请号：JP19311094

申请日：1994-08-17

Applicant: TORAY INDUSTRIES

Inventor： YAMADA TOSHIHIRO ,  MAEDA YUHEI ,  SEKI AKIHIRO

IPC: B65H57/24 ,  D01D10/02 ,  D02J1/22

Abstract: PURPOSE: To make yarn surely passable in a short time even in the case where it is applied to the undrawing yarn by installing a yarn passage guide, whose surface finished state is specified, in the yarn filament inlet part of a filament suction means. CONSTITUTION: A range if 0.4 to 25S is required to the surface roughness of a part coming into contact with a yarn filament 10 of a yarn passage guide 2. First of all, this filament 10 discharged out of a spinning pack is predrawn by a suction gun 18 by way of a guide 19 installed upstream a filament suction means 6. Next, with a cock 8 opened, high pressure gas is induced out of a high pressure gas pipe 7, then high pressure gas is blown out as accelerating it through a slit 5, whereby negative pressure is produced in the vicinity of a filament inlet hole 1. When the filament 10 being drawn by the suction gun 18 is cut by scissors and the like hereat, the feed filament 10 is drawn from the filament inlet hole 1, it is passed through downstream. If this filament 10 is received by the suction gun at the downstream side of a heat treatment equipment 13, yarn passing is over. At this time, if the surface roughness is smaller than 0.4 S, a friction factor with the filament grows larger, but if it is larger than 25S, some hitch of the filament will partially occur there.

公开(公告)号：JPH07305223A

公开(公告)日：1995-11-21

申请号：JP9491194

申请日：1994-05-09

Applicant: TORAY INDUSTRIES

Inventor： MAEDA YUHEI ,  NAKAMURA SHUSEI ,  UEDA KUNIHIKO

IPC: D01F6/62 ,  D01D5/084 ,  D01D10/00

Abstract: PURPOSE:To provide a method for producing thick denier polyester filaments not having dyeing irregularity, having sufficient mechanical properties and a sufficient thermal shrinkage constant and good in tension and stiffness at a low cost. CONSTITUTION:This method for spinning and drawing thick denier polyester filaments having a single filament fineness of >=3.5 denier comprises extruding a melted polyester from a spinneret 1, cooling and so solidifying the extruded filaments, imparting water to the filaments in an amount of >=3% per weight of the filaments, taking up the filaments with a non-heated first godet roller 5 at a take-up rate of 2000-4000m/min without winding up the filaments, heating and drawing the filaments with a first thermally treating device 6 having a steam atmosphere of atmospheric pressure and set between the first godet roller 5 and a non-heated second godet roller 7, thermally treating the drawn filaments with a second thermal treating device 8, and subsequently winding up the filaments.