-
公开(公告)号：JPH11350236A
公开(公告)日：1999-12-21
申请号：JP9118999
申请日：1999-03-31
Applicant: TORAY INDUSTRIES
Inventor： UEDA KUNIHIKO , NISHITANI TOSHIO , SAIJO TERUAKI , FURUTA HIRONORI
IPC: D01D4/08
Abstract: PROBLEM TO BE SOLVED: To provide a spinneret pack for melt spinning, capable of reducing the unevennesses of spun filaments and polymer deterioration by improving uneven flow of molten polymer, reducing polymer residence time and controlling abnormal polymer residence. SOLUTION: This spinneret pack is provided with an inflow block 2, current plate 3 and spinneret 6 in this order in the direction of polymer flow, wherein the current plate 3 is provided with space regions 9 and 10 on the inflow and outflow planes, respectively, and also with a plurality of current holes 3a, each having a throttle section 3ad, the number of the current holes 3a increasing as they go radially outward in the current plate 3.
-
公开(公告)号：JPH10323854A
公开(公告)日：1998-12-08
申请号：JP8227898
申请日：1998-03-27
Applicant: TORAY INDUSTRIES
Inventor： NISHIDA TAKANORI , NISHITANI TOSHIO , YOSHIMURA YUJI
Abstract: PROBLEM TO BE SOLVED: To provide a film bonding device capable of improving the product quality and producing a film at a high speed by preventing troubles generated when a solution film is bonded to the cast surface. SOLUTION: A film bonding device for bonding a solution film 3 extruded from a slit gap of a mouth piece against the surface of a moving cast has negative pressure areas 4, 5 each having an independent suction port upstream of the mouth piece in a direction in which the cast moves from a point wherein the solution film 3 is bonded to the cast surface and independent pressure reducing means, respectively, wherein at least one 4 of the negative pressure areas has a contact portion with the solution film 3 and the other negative pressure area 5 does not have a contact portion with the solution film 3.
-
公开(公告)号：JPH062977B2
公开(公告)日：1994-01-12
申请号：JP10299589
申请日：1989-04-20
Applicant: TORAY INDUSTRIES
Inventor： NISHIURA EIICHI , NISHITANI TOSHIO , ANDO KATSUTOSHI
-
公开(公告)号：JPS62177207A
公开(公告)日：1987-08-04
申请号：JP1662586
申请日：1986-01-27
Applicant: TORAY INDUSTRIES
Inventor： SANO TAKAO , NISHITANI TOSHIO
Abstract: PURPOSE:To enable exclusive heating of a spinneret for melt-spinning without causing degradation of polymer, by placing an induction coil near the lower face of a spinneret for melt-spinning and generating induction current in the spinneret. CONSTITUTION:A magnetic material is used as a material for a spinneret 10 for melt-spinning and a ring-shaped induction coil 11 for heating composed of heat-resistant wire is attached close to the lower face of the spinneret with a coil holder 12. When the coil holder is made of a conductor such as stainless steel, the coil 11 is separated from the holder 12 with a specific gap to prevent the heat-generation in the holder 12. An insulating material 13 is inserted between the coil 11 and the holder 12.
-
公开(公告)号：JP2002273728A
公开(公告)日：2002-09-25
申请号：JP2001080316
申请日：2001-03-21
Applicant: TORAY INDUSTRIES
Inventor： NISHITANI TOSHIO , MIZUNO TOSHIYUKI , SUETOMI YASUSHI
Abstract: PROBLEM TO BE SOLVED: To provide an apparatus for filtering resin capable of preventing quality of resin from being deteriorated by avoiding the resin deteriorated by stagnating for a long period of time from flowing backward in the apparatus for filtering the resin structure wherein disc type filters are stored by being laminated in multi-stages around a support in a casing, a laminar flow plate is arranged at its top and the filter together with the laminar flow plate are fixed from outside the support with a cap, and provide a method for filtering the resin using the apparatus. SOLUTION: In the apparatus for filtering resin wherein disc type filters are laminated in multi-stages to be stored around the periphery of the support in the casing, the laminar flow plate is arranged to its top and the filter together with the laminar flow plate are fixed from outside the support with a cap, a screw part provided to the support is communicated to a part wherein the resin passed through the filter is gathered, and the method for filtering resin using the apparatus is provided.
-
Patent Agency Ranking
公开(公告)号：JP2001054928A
公开(公告)日：2001-02-27
申请号：JP2000157843
申请日：2000-05-29
Applicant: TORAY INDUSTRIES
Inventor： MIYATA SATOSHI , HASEGAWA MASAHIRO , NISHITANI TOSHIO
Abstract: PROBLEM TO BE SOLVED: To drastically increase the upper limit of a sheet molding speed not generating a flaw in a thermoplastic resin sheet in a static electricity applying casting method. SOLUTION: A thermoplastic resin is extruded in a sheetlike form from a cap to be closely brought into contact with a cooling drum 3 by a static electricity applying casting method and the sheet 2 is molded while cooled and solidified. At this time, static charge is applied to the sheet 2 by using a tape-shaped electrode 5 and the static charge quantity applied to both end parts of the sheet 2 is made smaller than that applied to the central part of the sheet 2 to produce a thermoplastic resin sheet.
-
公开(公告)号：JP2000312850A
公开(公告)日：2000-11-14
申请号：JP12385899
申请日：1999-04-30
Applicant: TORAY INDUSTRIES
Inventor： NISHITANI TOSHIO , ENDO YOSHIKAZU , SATO KIMIO
Abstract: PROBLEM TO BE SOLVED: To form a stable uncoated portion of the end part of a running web to make it possible to certainly grasp the end part of the web in a next process to feed the web and to stably produce a web-like article of high quality free from a scattering defect to a coating soln. SOLUTION: A web coating apparatus has a coating roll 3 arranged so that the rotary axis direction thereof is substantially right-angled to the running direction of a web 1 and web position regulating rolls arranged on the upstream and downstream sides of the coating roll at least one by one so as to hold the web therebetween. In this case, the downstream web position regulating roll has a roll diameter change part 15 of which the central part becomes a larger diameter at the portion shorter than the width of the web of the roll 4 and web end passing position regulating means 5, 6 are arranged just before the upstream side of the roll 4 and/or just after the downstream side thereof.
-
公开(公告)号：JPH10272638A
公开(公告)日：1998-10-13
申请号：JP8063897
申请日：1997-03-31
Applicant: TORAY INDUSTRIES
Inventor： YAMAKAWA KATSUSHI , NISHITANI TOSHIO , YOSHIMURA YUJI
IPC: B29C41/28 , B29C41/34 , B29C41/50 , B29K101/12 , B29L7/00
Abstract: PROBLEM TO BE SOLVED: To provide a film manufacturing method and a device thereof for controlling the air suction pressure uniformly by placing vortexes formed on the surface of a liquid film far from the liquid film surface in the suction method, manufacturing a product of high quality and forming the film at high speed. SOLUTION: In a resin film manufacturing method and a device thereof, a suction nozzle is faced on a site on which a resin liquid film 3 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. In that case, suction holes of the suction nozzle are set along the width direction of the liquid film 3, and step sections 4 and 5 notched in the direction of moving side from the liquid film 3 are formed at least on both end areas in the width direction of the suction holes to carry out the suction of air.
-
公开(公告)号：JPH04352806A
公开(公告)日：1992-12-07
申请号：JP14252991
申请日：1991-05-17
Applicant: TORAY INDUSTRIES
Inventor： SANO TAKAO , TAKEMOTO GENZUI , NISHITANI TOSHIO
Abstract: PURPOSE:To provide a simple method for opening filaments with high opening efficiency. CONSTITUTION:A method for opening filaments by spinning a polymer, providing a filament group 2, then heating the filament group 2 with a heating means 8 and subsequently making the filament group collide with a collision member 1 is characterized as follows. The heating temperature of the aforementioned filament group 2 with the above-mentioned heating means 8 is regulated to a higher temperature than a temperature which is at least 20 deg.C lower than the glass transition temperature of the aforementioned polymer.
-
公开(公告)号：JPH0319906A
公开(公告)日：1991-01-29
申请号：JP6454089
申请日：1989-03-15
Applicant: TORAY INDUSTRIES
Inventor： SANO TAKAO , NISHITANI TOSHIO , NISHIURA EIICHI
Abstract: PURPOSE:To clean the subject spinneret in high workability to an extent to completely clean the inside of nozzles by heating and carbonizing a melt-spinning spinneret having attached polymer and cleaning the spinneret in an acid bath such as phosphoric acid bath at a specific temperature under the application of ultrasonic vibration having specific frequency and power. CONSTITUTION:A melt-spinning spinneret 2 having attached polymer is put into a vessel 4 wound with an electric heater 3 and containing aluminum powder 5. The vessel 4 constitutes a fluidized bed cleaning apparatus 1 used as a heating and carbonizing means. The aluminum powder 5 is heated with the heater 3 and, at the same time, fluidized with air introduced from the bottom of the vessel with a blower 7 to effect the hot carbonization treatment of the spinneret 2. The treated spinneret is put into an acid bath 10 of an ultrasonic cleaning apparatus 8 provided with a bath 10 of an acid such as phosphoric acid, oxalic acid or malic acid. The temperature of the acid bath is controlled to to 60X10 Hz and an output of 1-100W/cm is generated by an oscillator 13. The melt-spinning spinneret can be cleaned under ultrasonic treatment by this process.
-
-
-
-
-
-
-
-
-
Search Results
20
records
(took 0.023 seconds)
