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公开(公告)号：JPH09141736A
公开(公告)日：1997-06-03
申请号：JP32658795
申请日：1995-11-21
Applicant: TORAY INDUSTRIES
Inventor： ANZAI TOUCHI , TOYODA KATSUYA , OKUYAMA YUTAKA
Abstract: PROBLEM TO BE SOLVED: To provide a biaxially stretched polyester film improved in productivity by reducing the rupture of a film at the time of lateral stretching and the loss of edge parts not becoming a product and further in quality such as thickness uniformity or irregularity of physical properties in the lateral direction of the film and to provide a method for producing this film at a high speed. SOLUTION: The producing method is constituted so that molten polyester is injected to a rotary cooling body from a cap and quenched to mold a non- stretched sheet which is, in turn, successively stretched longitudinally and laterally to be thermally fixed. In this case, the film after stretched in the longitudinal direction is laterally stretched by grasping the lateral end parts where the refractive index in the lateral direction of the film is more than that of -0.04 or more of the flat central part in the lateral direction of the film, that is, 1.54-1.6. The biaxially stretched film thus obtained is reduced in thickness fluctuations in the longitudinal direction and has specific characteristics by FFT analysis.
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公开(公告)号：JPS612038B2
公开(公告)日：1986-01-22
申请号：JP4847578
申请日：1978-04-24
Applicant: Toray Industries
Inventor： KAZAMA TAKAHIKO , PPONGO MASATO , OKUYAMA YUTAKA
IPC: B05D1/40
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公开(公告)号：JPS60209218A
公开(公告)日：1985-10-21
申请号：JP6593884
申请日：1984-04-04
Applicant: TORAY INDUSTRIES
Inventor： SATOU KIMIO , OKUYAMA YUTAKA , OKABE KAZUO
Abstract: PURPOSE:To prolong the life of filter medium while increasing filtration precision by filtering thermoplastic polymer contg. granules having two or more kinds of average diameter with the filter medium constituted of two or more kinds of filter layer wherein the average pore diameter is regulated to 2-6 times of average diameter of said granules by measurement due to image treating method. CONSTITUTION:In case of filtering thermoplastic polymer contg. granules having two or more kinds of average diameter through a filter medium 21, respective filter layers 19, 20 constituted to multilayer are preset to average pore diameter of 2-6 times of average diameter of said granules in accordance with the average diameter of granules contained in said polymer. As a result, since the granules different in average diameter are caught in order with respective filter layers 19, 20, the life of whole filter mediums is remarkably prolonged in comparison with single layer filtration. Still more, since the average pore diameter of the filter medium is accurately measured by image treating method and the range of optimum average pore diameter is grasped by the test, the prolongation effect of life of the filter medium is fully exhibited.
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公开(公告)号：JPH0731921A
公开(公告)日：1995-02-03
申请号：JP20128893
申请日：1993-07-22
Applicant: TORAY INDUSTRIES
Inventor： OKUYAMA YUTAKA
Abstract: PURPOSE:To accurately and surely control the coating width to a desired one by installing an air nozzle for jetting air from diagonally below at the upstream side (contrary to the traveling of a sheetlike material) of a metering bar toward the end of a liquid pool formed by a coating liquid scraper. CONSTITUTION:The back surface of a film 1 is coated with a coating liquid 3 by an application roll 2. A part of the coating liquid 3 is scraped by a metering bar 6 so that a prescribed coating thickness may be obtained. At this time, a liquid pool 13 having a vertical section in the shape of a wedge and extending in the width direction of film is formed just at the upstream side of the metering bar 6. By air nozzles on both sides, air is jetted from below in the inside direction toward each end of the liquid pool 13. The jetted air hits against each end of the liquid pool 13 and the positions of the ends liable to spread in the film width direction is regulated to prevent the spreading. That is, the coating liquid swelling out from the object coating width is prevented.
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公开(公告)号：JPH09220756A
公开(公告)日：1997-08-26
申请号：JP5389896
申请日：1996-02-16
Applicant: TORAY INDUSTRIES
Inventor： ANZAI TOUCHI , OKUYAMA YUTAKA
Abstract: PROBLEM TO BE SOLVED: To develop more excellent capacity when the characteristics of a molten resin are changed by the number of rotations of a screw by controlling the number of rotations of the screw or/and resin supply speed of a screw extrusion part on the basis of the signal of a weighing and emitting part to weigh and emit the molten resin. SOLUTION: A weighing and emitting speed Ng is detected on the basis of the detection signal by a number-of-rotation detector 14 and the speed Nf of a resin supply part driving device 3 is calculated,in predetermined relation by a resin supply control part 18 to control the drive device 3 of a supply device and the number of rotations Ns of a screw is calculated in predetermined relation by a screw number-of-rotation control part 17 to control a screw driving device 7. A pressure change over a relatively long period of time is subjected to time processing and the pressure change quantity ΔP2 thereof is converted to screw number-of-rotation change quantity ΔNf by a resin supply machine speed operator 16 and the signal thereof is sent to the resin supply control part 18 to control the resin supply speed Nf of the drive device 3 of the resin supply part.
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Patent Agency Ranking
公开(公告)号：JPH0939072A
公开(公告)日：1997-02-10
申请号：JP21651695
申请日：1995-08-03
Applicant: TORAY INDUSTRIES
Inventor： ANZAI TOUCHI , KAWAJI NAOKI , OKUYAMA YUTAKA
IPC: B29C47/14 , B29C47/68 , B29C55/12 , B29K105/16 , B29L7/00
Abstract: PROBLEM TO BE SOLVED: To flatten a filter having a filler added thereto by passing a molten thermoplastic resin containing a filler specified in the standard deviation of a particle size through a filter specified the filler, filtering accuracy, the product of the diameter and basis wt. of metal fibers, the axial orientation of metal fibers, the voids of the filler and the flow resistance of air. SOLUTION: A thermoplastic resin containing a filler wherein an average particle size is δ and the standard deviation thereof is 0.1 δ or more is melted using an extruder. This resin is passed through a filter wherein the filler and filtering accuracy satisfy formula I, the product of the diameter (d) and wt. basis (w) of metal fibers of the n-th layer satisfy formulae II, III, media composed of metal fibers of which the axes are oriented in the direction crossing the flow of the molten resin at a right angle and having voids of 35-90% are laminated and the flow resistance of air is 35mm H2 O or more to be filtered and subsequently emitted from a cap to be quenched to be molded into a sheet form. n is the number from the upstream side of the media constituting the filter.
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公开(公告)号：JPS62228946A
公开(公告)日：1987-10-07
申请号：JP7130786
申请日：1986-03-31
Applicant: TORAY INDUSTRIES
Inventor： OKUYAMA YUTAKA , SATO KIMIO , OKABE KAZUO
Abstract: PURPOSE:To easily measure surface characteristics with high accuracy by placing plural samples on a metallic measurement table, supplying static charges from an electrode positioned above the center part, and measuring the advance speed of the contacting of the samples with the surface of the measurement table. CONSTITUTION:The metallic measurement table 1 is grounded by an earth line 3 through a metallic base 2. A mark 4 is given on the smooth surface 1a of the measurement table 1 at constant distance from its center point. Plural film samples 5 are mounted on the surface 1a of the measurement table 1. The electrode 6 provided above the center part of the samples 5 is composed of a stylus electrode. A DC voltage of several kV is applied from a DC high voltage power source 9 to the electrode 6 to supply static charges 10 to the samples 5. If the samples 5 are charged electrostatically, the samples 6 come into contact with one another with electrostatic attractive force and the lower sample 5 contacts the surface 1a of the measurement table 1. The time required for the contacting to reach the position of the mark 4 is measured to measure the contacting advance speed accurately with high accuracy.
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公开(公告)号：JPH10320840A
公开(公告)日：1998-12-04
申请号：JP14866497
申请日：1997-05-22
Applicant: TORAY INDUSTRIES
Inventor： NAKASU TAKUYA , OKUYAMA YUTAKA
Abstract: PROBLEM TO BE SOLVED: To improve the degree of cleaning and to stably obtain the optical recording medium having a lower error rate by cleaning an inspection drive while operating it before supplying the medium to the drive during the inspection in which the medium is supplied to the drive, taken out the medium after the inspection and repeating the above operations. SOLUTION: Suction pads 10, which are connected to a suction means 6 of a robotic arm 4, supply an optical recording medium 3 to a tray 2 of an inspection drive. After the completion of the inspection, the medium 3 is taken out from the tray 2 and the inspection is successively continued. A blowing means 5 blows ionized gas from plural blowing holes 8 against the tray 2 prior to supplying the means 3 to the tray 2, provides electric charges to the foreign objects being stuck so as to reduce the sticking force. During the blowing operation means 5, the suction operation means 6 starts, the foreign objects are sucked in and the tray 2 is cleaned. Thus, the working rate of the inspection device and the production efficiency of the medium are improved and inspection errors and the generation of malfuction are prevented.
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公开(公告)号：JPS5268262A
公开(公告)日：1977-06-06
申请号：JP14383775
申请日：1975-12-05
Applicant: TORAY INDUSTRIES
Inventor： KAZAMA TAKAHIKO , HONGOU MASATO , OKUYAMA YUTAKA , KOUUCHI SHINJI , MITA OSAMU
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公开(公告)号：JPH0939073A
公开(公告)日：1997-02-10
申请号：JP21651795
申请日：1995-08-03
Applicant: TORAY INDUSTRIES
Inventor： ANZAI TOUCHI , OKUYAMA YUTAKA , KAWAJI NAOKI
Abstract: PROBLEM TO BE SOLVED: To advantageously reutilize the tab parts and refuse generated during the manufacture of a thermoplastic resin film by filtering a molten thermoplastic resin film by filtering a molten thermoplastic resin containing a filler having a specific average particle size subjected to the production of a thermoplastic resin film using a filter having specific filtering accuracy. SOLUTION: A molten thermoplastic resin containing an inorg. or org. filler having an average particle size of 0.1μm or more subjected to the production of a thermoplastic resin film is filtered using a filter 54 of which the filtering accuracy is five times or less the average particle size of the filler. The filter 54 is obtained by laminating media wherein the diameter (d) of metal fibers of the n-th layer in the flow direction of the molten resin is 30μm or less, the wt. basis (w) thereof is 1000g/m and the product (W.d)n of them is 16000 or less, (w.d)n+1 /(w+d)n is 2.5 or less and voids is 35-90% and has air flow resistance of 35mm H2 O or more.
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