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公开(公告)号：ID23400A
公开(公告)日：2000-04-20
申请号：ID991544
申请日：1999-03-25
Applicant: TORAY INDUSTRIES
Inventor： UEDA KUNIHIKO , NISHITANI TOSHIO , FURUTA HIROKI , SAIJO TERUAKI , SAITO KANJI , KATO HIROSHI , OHTANI HIROSHI , SHIMIZU SHINJI , HASHIMOTO KOJI
Abstract: A melt spinning pack, comprising a pack case, and a spinneret having many spinning holes provided at the bottom of the case, a pack cap having a polymer introducing hole at the center provided at the top of the case and a flow arranging plate having many flow arranging holes provided between the spinneret and the pack cap, respectively contained in the case, said flow arranging holes having restricted portions reduced in cross sectional area compared to the inlets of the holes. It is preferable that the cross sectional area of the restricted portions of the flow arranging holes positioned in the peripheral region of the flow arranging plate is smaller than the cross sectional area of the restricted portions of the flow arranging holes positioned in the central region. It is preferable that the length of the restricted portions of the flow arranging holes positioned in the peripheral region of the flow arranging plate is longer than the length of the restricted portions of the flow arranging holes positioned in the central region.
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公开(公告)号：JP2000062006A
公开(公告)日：2000-02-29
申请号：JP23198498
申请日：1998-08-18
Applicant: TORAY INDUSTRIES
Inventor： ENDO YOSHIKAZU , NISHITANI TOSHIO , SATO KIMIO
Abstract: PROBLEM TO BE SOLVED: To obtain a sheet-like article with a more uniform specified thickness by grasping more precisely reasons of fluctuation and surge of the thickness of the sheet-like article for coping with a more severe requirement of accuracy of controlling the thickness. SOLUTION: In a method for preparing a sheet-like article wherein a resin is extruded into the sheet-like article from a nozzle 1 and wound after molding, a thickness meter for measuring thickness in the longitudinal direction of the sheet-like article is provided and fluctuation of the measured value of the thickness in the longitudinal direction of the sheet-like article by means of the thickness meter is FFT-analyzed.
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公开(公告)号：JPH08232114A
公开(公告)日：1996-09-10
申请号：JP3704695
申请日：1995-02-24
Applicant: TORAY INDUSTRIES
Inventor： IKEUCHI HIDEKI , UEDA KUNIHIKO , NISHITANI TOSHIO
Abstract: PURPOSE: To provide a cooler for melt-spinning synthetic fiber where a cooling tube having the exhaustion part at its bottom is connected to the lower part of the ejector to promote the heat exchange between the cooling air and the melt-spun fiber yarn and attain satisfactory cooling. CONSTITUTION: The yarn 2 melt-spun from the spinneret 1 is passed through a cooling unit 10 comprising an ejector 6, a cooling tube 7 and a exhauster 8 and taken up with a godet roller 9. The cooling air fed from an inlet 6b to the ejector flows down in the cooling tube along the tube axis to sufficiently effect heat exchange with the yarn 2 and exhausted from an outlet 8b.
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公开(公告)号：EP0997560A4
公开(公告)日：2004-10-13
申请号：EP99909341
申请日：1999-03-25
Applicant: TORAY INDUSTRIES
Inventor： UEDA KUNIHIKO , NISHITANI TOSHIO , FURUTA HIROKI , SAIJO TERUAKI , SAITO KANJI , KATO HIROSHI , OHTANI HIROSHI , SHIMIZU SHINJI , HASHIMOTO KOJI
Abstract: A melt spinning spinning pack comprising a pack case, a nozzle plate stored in the case at the lower end of the case and having many nozzle holes, a pack lid provided at the upper end of the case and having a polymer introduction hole at the center thereof and a distributing plate provided between the nozzle plate and the pack lid and having many distributing holes, wherein each distributing hole is formed with a restriction portion having a cross-sectional area smaller than that at the inlet. It is preferable that a cross-sectional area of a restriction portion of a distributing hole be smaller at the outer periphery of the distributing plate than at the center thereof. It is preferable that a length of a restriction portion of a distributing hole be larger at the outer periphery of the distributing plate than at the center thereof.
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公开(公告)号：JP2000062005A
公开(公告)日：2000-02-29
申请号：JP23094898
申请日：1998-08-17
Applicant: TORAY INDUSTRIES
Inventor： ENDO YOSHIKAZU , NISHITANI TOSHIO , SATO KIMIO
Abstract: PROBLEM TO BE SOLVED: To improve quality of a sheet-like article by using a thickness meter for measuring the thickness in the width direction also for measuring the thickness in the longitudinal direction without generating any trouble to measure the thickness in both directions. SOLUTION: In a method for preparing a sheet-like article wherein a resin is extruded into the sheet-like article from a nozzle and wound after molding, movement of a thickness meter provided between the nozzle 1 and a winding machine 11 and moving in the width direction of the sheet-like article is stopped based on a signal from other processes and the thickness in the longitudinal direction of a sheet-like article is measured at the stopping position.
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Patent Agency Ranking
公开(公告)号：JPH1072760A
公开(公告)日：1998-03-17
申请号：JP22660096
申请日：1996-08-28
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI MASAKADO , NISHITANI TOSHIO , MATSUMOTO TADAYUKI
Abstract: PROBLEM TO BE SOLVED: To provide a melt blow spinning method resolving a shot generated by cap soil in the melt blowing method without changing the cap by taking off. SOLUTION: In a melt blow spinning method heat-melting a thermoplastic resin, extruding the melt from an orifice 2 in a nozzle 1 and attenuating the melt by jetting a heated gas from an air lip 3 disposed in the vicinity of an open end of the orifice 2, soil attached to the nozzle 1 or its peripheral member is cleaned by moving the air lip 3 and the air lip 3 is returned to the original position, then the spinning is continued.
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公开(公告)号：JPH0465565A
公开(公告)日：1992-03-02
申请号：JP17351490
申请日：1990-06-29
Applicant: TORAY INDUSTRIES
Inventor： NISHIURA EIICHI , MANABE MASAHIKO , NISHITANI TOSHIO
Abstract: PURPOSE:To obtain a melt blown nonwoven fabric having a homogeneous basis weight distribution in the width direction by increasing the width of arranged jetting gas ports installed adjacently to plural discharge holes for a molten polymer from that of the discharge hole row for the molten polymer by a specific value or above. CONSTITUTION:The width of jetting gas ports 10 and 10' is set at a value >=2cm, preferably >=10cm larger on one side than that of a row of discharge holes 11 for a molten polymer. thereby, gas streams jetted from the widely installed parts act as a barrier for accompanying air streams in melt blowing and the basis weight distribution of the nonwoven fabric at the ends in the sheet width direction is homogenized to reduce also the difference in size between the central part and the ends of the sheet.
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公开(公告)号：JPH02289162A
公开(公告)日：1990-11-29
申请号：JP10299589
申请日：1989-04-20
Applicant: TORAY INDUSTRIES
Inventor： NISHIURA EIICHI , NISHITANI TOSHIO , ANDO KATSUTOSHI
Abstract: PURPOSE:To stably obtain the title high-quality nonwoven fabric by setting slit widths, set packs and jetting pressure of hot gas laid at left and right sides of die nose unsymmetrically with respect to left and right of the die nose and pulling and thinning a molten polymer. CONSTITUTION:In spinning a molten polymer by using a spinning die 1 equipped with a die nose 4 having an orifice 9 to deliver a molten polymer and symmetric slits 10a and 10b at left and right of the die nose, first, slit widths L1 and L2, set packs H1 and H2 and/or jetting pressure P1 and P2 of hot gas jetted from the slits formed at the left and right of the die nose are set unsymmetrically with respect to the left and right of the die nose, the molten polymer is pulled and thinned and further melt blown fibers are collected in a state of nonwoven fabric to give the aimed high-quality and elegant nonwoven fabric while preventing occurrence of polymer balls.
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公开(公告)号：JPH10272637A
公开(公告)日：1998-10-13
申请号：JP8063397
申请日：1997-03-31
Applicant: TORAY INDUSTRIES
Inventor： NISHITANI TOSHIO , YOSHIMURA YUJI
IPC: B29C41/28 , B29C41/34 , B29C41/50 , B29K101/12 , B29L7/00
Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method and a device thereof for a resin film for realizing the secured work of bonding a liquid film on a cast face by the suction method and the stabilized manufacture and also improving the productivity and the quality of a product. SOLUTION: In a resin film manufacturing method and a device thereof, a suction nozzle 2 is faced on a site on which a resin liquid film 3 is discharged out of a slit-shaped cap 1 is bonded on a movable cast face, and the film is manufactured while sucking air from the suction nozzle 2, and suction holes of the suction nozzle 2 are set along the width direction of the liquid film 3, and air is sucked by the suction holes of the width W narrower than the jet width L of the liquid film 3.
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公开(公告)号：JPH0319907A
公开(公告)日：1991-01-29
申请号：JP6453989
申请日：1989-03-15
Applicant: TORAY INDUSTRIES
Inventor： NISHITANI TOSHIO , SANO TAKAO , NISHIURA EIICHI
Abstract: PURPOSE:To prevent the damage of die tip in assembling and wiping by specifying the angle between orifice-side wall faces of both slits, the diameter of orifice, the tip width of die nose and set-back of the tip face of die nose. CONSTITUTION:The objective die has a tip angle theta of die nose 7 of >=25 deg. and 0.4mm and
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