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公开(公告)号：JPH073520A
公开(公告)日：1995-01-06
申请号：JP14382893
申请日：1993-06-15
Applicant: TORAY INDUSTRIES
Inventor： YAMAZAKI JUN , TAMAI HIDEO , NAKAI TOSHIAKI
Abstract: PURPOSE:To rapidly carry out normal spinning of yarn from a dry or wet type spinneret by removing a polymer on the surface of the dry or wet type spinneret with a volatile organic solvent. CONSTITUTION:A polymer attached to a discharge part of dry or wet type spinneret is removed by a volatile organic solvent such as lower alcohol or lower ketone. A polymer dope is solidified by applying the volatile organic solvent to the polymer by a method blowing using cylinder of injection and the solvent is volatilized.
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公开(公告)号：JPH01266214A
公开(公告)日：1989-10-24
申请号：JP9063788
申请日：1988-04-13
Applicant: TORAY INDUSTRIES
Inventor： YAMAZAKI JUN , YAMAMOTO EIICHI , TAMAI HIDEO
Abstract: PURPOSE:To uniformly apply an oil to a spun and drawn acrylonitrile yarn in an oil bath and the prevent the fluffing and end breakage of carbon fiber, by contacting the yarn with a guide bar oscillating in said oil bath at specific frequency and amplitude. CONSTITUTION:An acrylonitrile polymer containing >=90wt.% of acrylonitrile is spun, washed with water, drawn and immersed in an oil bath to apply an oil to the yarn and obtain the objective yarn. In the above process, said yarn is made to contact with a guide bar oscillating in said oil bath at a frequency of 1-8,000Hz, preferably 2-1,000Hz and an amplitude of 0.0001-20mm, preferably 0.0005-5mm.
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公开(公告)号：JP2551240B2
公开(公告)日：1996-11-06
申请号：JP150591
申请日：1991-01-10
Applicant: TORAY INDUSTRIES
Inventor： TAMAI HIDEO , YAMAMOTO EIICHI , ICHIKAWA SEISHIRO
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公开(公告)号：JPH08246284A
公开(公告)日：1996-09-24
申请号：JP4547195
申请日：1995-03-06
Applicant: TORAY INDUSTRIES
Inventor： OGUSHI TAKAHIRO , TOKUOKA YOSHIKAZU , TAMAI HIDEO
Abstract: PURPOSE: To stably draw an acrylic yarn without causing mal operation by the occurrence of fluff and the winding of yarn on a roller by preheating the acrylic yarn with steam and drawing the yarn with steam. CONSTITUTION: Spun yarn of an acrylic polymer comprising >=90wt.% acrylonitrile is drawn in a bath, imparted with a silicone-based finishing oil, dried and densified through a hot roller. Then the yarn 4 is sent through a feed roller 6 to a steam box 1, preheated under 0.5-1.5kg/cm , preferably 0.7-1.2kg/cm steam pressure, guided to a steam tube 9 having both ends labyrinth-sealed and subjected to fixed drawing treatment in pressurized steam.
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公开(公告)号：JPH08246248A
公开(公告)日：1996-09-24
申请号：JP4746795
申请日：1995-03-07
Applicant: TORAY INDUSTRIES
Inventor： TAMAI HIDEO , NOJIRI HIRONOBU , SHIN SEIKI
IPC: D01F9/12
Abstract: PURPOSE: To easily prevent the occurrence of winding of an uncarbonized yarn on a roller by placing a bundle of an electroconductive fiber near the outlet of a yarn from a rotary roller for running the yarn. CONSTITUTION: An electroconductive fiber bundle 4 for removing static electricity is placed near the outlet of a yarn from a roller 2 for an uncarbonized yarn 3 to run before arriving a carbonizing process. A carbon-fiber bundle is preferable as the electroconductive fiber bundle. This process enables the stable production of a carbon fiber by burning a precursor fiber (PAN fiber, a pitch-based fiber, etc.).
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Patent Agency Ranking
公开(公告)号：JPH0770813A
公开(公告)日：1995-03-14
申请号：JP21395093
申请日：1993-08-30
Applicant: TORAY INDUSTRIES
Inventor： TAMAI HIDEO , SHIRAKATA MORIAKI
Abstract: PURPOSE:To reduce the variation of the distance between a spinning nozzle and the coagulation liquid surface and reduce the shaking of a discharged stream by making coagulation bath liquid overflow from the inlet side of a coagulation bath and circulating the coagulation bath liquid in dry and wet spinning of a polyacrylonitrile-based fiber. CONSTITUTION:A polyacrylonitrile-based polymer solution is discharged and drawn through a spinning nozzle 1 and drown through a guide 2 in a coagulation bath and a draw guide 3 by a draw roll 5. This coagulation bath is equipped with an overflow barrier at least on the inlet side and the overflowing liquid 8 on the inlet side is circulated through a circulation pump 7 to the coagulation bath. Since the variation of the distance Ha between the spinning nozzle surface and the coagulation bath surface is small, this apparatus can reduce the shaking of a thin stream of the polymer solution during traveling.
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公开(公告)号：JPH04241109A
公开(公告)日：1992-08-28
申请号：JP150591
申请日：1991-01-10
Applicant: TORAY INDUSTRIES
Inventor： TAMAI HIDEO , YAMAMOTO EIICHI , ICHIKAWA SEISHIRO
Abstract: PURPOSE:To provide the subject device comprising a specific structure, capable of constantly maintaining a distance between a spinneret and a coagulating bath for a long period of time and further capable of stationarily and stably producing high quality fibers without being affect by the atmospheric temperature. CONSTITUTION:The objective device comprising a spinneret 6, an arm 3 for supporting the spinneret, a support 5 equipped with a height adjuster 4, and a coagulating bath 11 is characterized by fixing the spinneret 6 to the arm 3, loading the arm 3 on a the support 5 fixed to the upper part of the coagulating bath 11 in parallel, and arranging the arm 3 at a near position apart
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公开(公告)号：JPH0274608A
公开(公告)日：1990-03-14
申请号：JP22519288
申请日：1988-09-08
Applicant: TORAY INDUSTRIES
Inventor： MIKI EIJI , TAMAI HIDEO , KAKO KYOICHI
Abstract: PURPOSE:To wash fiber or fabric in high washing efficiency with inexpensive apparatus while suppressing the surface damage and interlock of single filaments by contacting a vibration member vibrating at specific frequency and amplitude to a fiber yarn or fabric moving in a washing bath. CONSTITUTION:A fiber or fabric 6 to be washed is introduced into a washing bath 1 via a feed roller 7 and an inlet-side free roller 8 and transferred through a washing water 2 supplied from a feed nozzle 3 into the bath, overflowed from an overflow board 4 and discharged from a discharge nozzle 5. A vibration member 9 vibrating at a frequency of 1-500Hz and an amplitude of 0.01-50mm with a vibrator 10 is brought to contact with the moving fiber or fabric 6 nearly perpendicular to the transfer direction of the fiber, etc. The fiber or fabric 6 is washed under the application of vibration and the washed fiber or fabric is taken out of the bath via an outlet-side free roller 8' and a draw roller 8'.
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公开(公告)号：JPH11350245A
公开(公告)日：1999-12-21
申请号：JP8108499
申请日：1999-03-25
Applicant: TORAY INDUSTRIES
Inventor： TAMAI HIDEO , YAMAMOTO EIICHI , SEKIDO SHUNEI
Abstract: PROBLEM TO BE SOLVED: To stably obtain a high-quality acrylonitrile-based fiber without causing yarn breakage by floating a plurality of specific objects on the level of a coagulation bath so as to surround a spinneret to diminish the ruffle of the level. SOLUTION: This acrylonitrile-based fiber is obtained by dry/wet spinning process; wherein a plurality of spherical objects 9 each with a specific gravity of 0.3-1.0 (pref. 0.5-0.9) and the maximum width of >=10 mm are floated on the level 11 of a coagulation bath existing 2-10 mm apart from the underside of a spinneret 1 in such a way that the depth of the portion of the objects 9 existing under the level 11 is 1/5 to 4/5 time the height of the portion of the objects 9 existing above the level 11 and the objects 9 are put into a net and floated in three or more rows so as to surround the spinneret 1 to diminish the ruffle of the level 11.
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公开(公告)号：JPH09268427A
公开(公告)日：1997-10-14
申请号：JP7647096
申请日：1996-03-29
Applicant: TORAY INDUSTRIES
Inventor： TAMURA MASAYOSHI , TAMAI HIDEO , YAMAZAKI JUN
Abstract: PROBLEM TO BE SOLVED: To provide a producing method of acrylic yarn strands as carbon fiber precursors capable of resolving unevenness of squeezing, damage and cementing of a single fiber in the squeezing of swollen yarn strands having high yarn strand density and giving carbon fibers having high performances. SOLUTION: Swollen yarn strands obtained by spinning an acrylic polymer and having 100-3,000de/mm yarn strand density are passed between a rubber- based nip roll having
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