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公开(公告)号：JP2002160241A
公开(公告)日：2002-06-04
申请号：JP2000360983
申请日：2000-11-28
Applicant: TORAY INDUSTRIES
Inventor： YAMAKAWA KATSUSHI , NISHIDA TAKANORI , OKASHIRO HIDETOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a resin film manufacturing apparatus capable of rectifying air flowing in a suction device at the time of formation of a resin film to manufacture the stable resin film at a high speed, and capable of avoiding the damage of a casting surface to enhance the productivity of the film. SOLUTION: The resin film manufacturing apparatus consists of a cap device 1 for continuously discharging a resin having flowability in a film-like state, a casting device 6 or 8 having a casting surface 6a or 8a continuously moving while receiving the film discharged from the cap, and a film adhesion device 2 having a suction means for closely bringing the film placed on the casting surface into contact with the casting surface. The surface opposed to the casting surface of the film adhesion device 2 is formed as a recessed curved surface.
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公开(公告)号：JP2002079565A
公开(公告)日：2002-03-19
申请号：JP2000271701
申请日：2000-09-07
Applicant: TORAY INDUSTRIES
Inventor： NISHIDA TAKANORI , KAWATAKE HIROSHI , OKASHIRO HIDETOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a molding device for a thermoplastic resin sheet with a capability of realizing the rapid molding of the thermoplastic resin sheet without incurring the early deterioration of an electrostatic applicator. SOLUTION: A cooling rotor 2 for cooling and setting up the thermoplastic resin sheet S extruded in a molten state is arranged below a die head 1 for melt-extruding the resin in the form of a sheet, and an electrostatic applicator 3 of a tape shape is erected above a landing point P where the resin sheet S comes into contact with the cooling rotor 2. Further, both ridge parts of the short side, on the side where the rectangular cross-section of the applicator 3 is opposed to the resin sheet S, of the applicator 3, are beveled and the beveling size L in the short side direction is set so that the relationship of the size L to the thickness T of the applicator 3 is represented by L=aT(0.05
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公开(公告)号：JP2001138379A
公开(公告)日：2001-05-22
申请号：JP32389299
申请日：1999-11-15
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAKI , TOYAMA MASAHARU , OKASHIRO HIDETOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a device and a method for manufacturing a resin molding, with the capability of controlling the temperature of a molten resin efficiently and uniformly. SOLUTION: The device for manufacturing a resin molding comprises an extruder, a die, a heat exchanger which connects the extruder to the die, a heating medium supply means for supplying a heating medium to the heat exchanger and a control means for controlling the temperature of the heating medium to be supplied to the heat exchanger. In addition, when the temperature of the heating medium prior to heat exchange is given as T1, and the temperature of a molten resin after heat exchange is given as T2, T1 is controlled so that T1 and T2 satisfy the formula: T2-10
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公开(公告)号：JP2000210959A
公开(公告)日：2000-08-02
申请号：JP1650899
申请日：1999-01-26
Applicant: TORAY INDUSTRIES
Inventor： NISHIDA TAKANORI , YAMAKAWA KATSUSHI , OKASHIRO HIDETOSHI
Abstract: PROBLEM TO BE SOLVED: To remarkably decrease air biting and to improve high speed film manufacturing and quality by making specified mechanical accuracy of a suction nozzle and a slit gap part of a mouthpiece to a cast face within specified ranges. SOLUTION: In this apparatus, a resin film 33 extruded from a slit gap 31a of a mouthpiece 31 is cast on a moving cast face 34a and a suction nozzle 32 for bringing the resin film 33 into intimate contact with the cast face 34a is provided on the upstream side in the cast face moving direction from the position where the resin film 33 is cast on the cast face 34a to the mouthpiece 31. In this case, degree of straightness or/and degree of flatness of the face of the suction nozzle 32 facing to the cast face 34a is made at most 0.05% of the whole width of the suction nozzle 32.
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公开(公告)号：JP2000117829A
公开(公告)日：2000-04-25
申请号：JP29853898
申请日：1998-10-20
Applicant: TORAY INDUSTRIES
Inventor： YUSHIO HARUHISA , OKASHIRO HIDETOSHI , MAEHARA KENSAKU
Abstract: PROBLEM TO BE SOLVED: To smoothly pass a film to a tenter even in the case of a high speed production and to reduce a scrap generation amount by passing the film to the tenter at a lower speed than a predetermined speed at an inlet of the tenter at the time of producing. SOLUTION: A uniaxially oriented film 11 is passed through a film feeding direction switching means 12, then introduced into a tenter 13, preheated in the tenter 13, and then laterally oriented to form a biaxially oriented film 14. A suction belt 45 is provided as a film conveying means for guiding the film 11 to a film grasping position 44 of the tenter 13 at an inlet of the tenter 13. The film 11 is grasped by a clip 46. In this case, a speed of the tenter 13 is set to a normal production speed at the inlet of the tenter 13, i.e., not higher speed than a predetermined speed. Then, a take-up unit or a winder is started at the same speed as a film passing speed at the tenter 13, and the film from the tenter 13 is wound by the take-up unit or the winder.
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Patent Agency Ranking
公开(公告)号：JPH10323880A
公开(公告)日：1998-12-08
申请号：JP15448997
申请日：1997-05-27
Applicant: TORAY INDUSTRIES
Inventor： TOYODA KATSUYA , OKUBO KENICHI , OKASHIRO HIDETOSHI
Abstract: PROBLEM TO BE SOLVED: To form a thermoplastic resin sheet of superior thickness uniformity and scarcely having a small number of surface defects at high speed. SOLUTION: In a method for forming a sheet in which molten thermoplastic resin in the sheet shape is extruded from a mouthpiece and bonded and solidified on a cooling drum by the electrostatic applying casting method to form a sheet, a tape-shaped electrode having a rectangular section and uniform shape in the longitudinal direction and the electric resistivity of 10 μΩ.cm or more is used. In that case, the heat conductivity of the tape-shaped electrode is set as not more than 0.1 cal/cm.sec. deg.C, and the thickness is not less than 0.01 to not more than 0.50 mm, and the width is not less than 1 mm not more than 20 mm.
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公开(公告)号：JPH0671676A
公开(公告)日：1994-03-15
申请号：JP22828892
申请日：1992-08-27
Applicant: TORAY INDUSTRIES
Inventor： IKEGAMI TETSUO , OKASHIRO HIDETOSHI , HARA MASANOBU , ANZAI TOUCHI
Abstract: PURPOSE:To constitute a method so that a resin film can be manufactured stably even at an early stage of manufacturing resin film wherein a water film is arranged on a casting drum. CONSTITUTION:Manufacture of a resin film includes 71 process manufacturing a series of a resin film F by supplying sheetlike molten resin 5a continuously to a casting drum 4, a process performing orientation treatment by leading the resin film F to a film orientation part 2 and a process arranging a water film to the casting drum 4 by a water film forming device 7 to interpose the water film between the casting drum 4 and resin film F. The process arranging the water film is started upon arrival of the resin film F to an orientation treatment part.
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公开(公告)号：JPH0671673A
公开(公告)日：1994-03-15
申请号：JP22828592
申请日：1992-08-27
Applicant: TORAY INDUSTRIES
Inventor： IKEGAMI TETSUO , OKASHIRO HIDETOSHI , KAWAJI NAOKI , ANZAI TOUCHI
Abstract: PURPOSE:To provide a manufacturing device for a resin film which can remove a water film on a casting drum efficiently and low in noise. CONSTITUTION:A manufacturing device of a resin film is provided with a casting drum 4, a resin supply device 5 to supply the casting drum 4 with sheetlike molten resin 5a, a water film forming device 7 to arrange a water film on the surface of the casting drum 4 and a blade 19 to remove the water film on the surface of the casting drum 4. The blade 19 is supported under a state capable of making an up-and-down motion and pressure-contactable with the surface of the casting drum 4.
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公开(公告)号：JPH0671672A
公开(公告)日：1994-03-15
申请号：JP22828492
申请日：1992-08-27
Applicant: TORAY INDUSTRIES
Inventor： IKEGAMI TETSUO , OKASHIRO HIDETOSHI , TAKADA AKINORI , ANZAI TOUCHI
Abstract: PURPOSE:To provide a manufacturing device for a resin film which can remove a water film on a casting drum efficiently and low in noise. CONSTITUTION:A manufacturing device of a resin film is provided with a casting drum 4, a resin supply device 5 to supply sheetlike molten resin to the casting drum 4, a water film forming device 7 to arrange a water film on the surface of the casting drum 4 and an infrared heater 8 which is arranged in close vicinity to the casting drum 4 and for removal of the water film of the surface of the casting drum 4. The infrared heater 8 heats the water film left behind on the casting drum 4 after the resin film F is peeled off and removes the same.
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公开(公告)号：JPH0671668A
公开(公告)日：1994-03-15
申请号：JP22828092
申请日：1992-08-27
Applicant: TORAY INDUSTRIES
Inventor： IKEGAMI TETSUO , OKASHIRO HIDETOSHI , SUGIYAMA YOSHIAKI , ANZAI TOUCHI
Abstract: PURPOSE:To provide a water film forming method which can form a water film having a uniform thickness on a casting drum. CONSTITUTION:In this water-film forming method, wet air through a wet air generating device 80 is supplied to a wet air blow-off device arranged in close vicinity to a casting drum through a wet air supply pipe 91. The wet air generating device 80 produces wet air by allowing air through an air supply pipe to pass through hot water in a sealed vessel 81. A temperature of hot water in the sealed vessel 81 is set up at 81 deg.C or higher and 90 deg.C or lower. Since the wet air obtained herein is in almost a saturated state and has a stabilized quantity of moisture, when the same is led to the wet air blow-off device, the water film having a uniform thickness is formed on the casting drum.
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