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公开(公告)号：JP2002148272A
公开(公告)日：2002-05-22
申请号：JP2000343219
申请日：2000-11-10
Applicant: TORAY INDUSTRIES
Inventor： TAKAMURA RYOJI , SANO TAKAO , HIRATA HAJIME
Abstract: PROBLEM TO BE SOLVED: To provide a production method of sheet attaining improvement of production yield and quality, in production and fabrication of the sheet by measuring the velocity of a running sheet easily and exactly, and by non-contact which results in no generation of dirt, scratch and crease of the sheet in the process of producing and fabricating the sheet. SOLUTION: In this speed detection method for running sheet, the surface of the running sheet is electrically charged with intensities which vary periodically, and the electric potential on the surface of the sheet is measured at a first and a second positions apart from each other by a prescribed distance in the running direction downstream of the charged position. Based on the phase difference of the waveforms of the electric potential obtained at the first and the second positions and the prescribed distance, the running speed of the sheet is calculated. The sheet is produced and fabricated with this speed detection method.
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公开(公告)号：JP2002055054A
公开(公告)日：2002-02-20
申请号：JP2000239649
申请日：2000-08-08
Applicant: TORAY INDUSTRIES
Inventor： NAKAI YASUHIRO , TAKAMURA RYOJI , HIRATA HAJIME
IPC: G01N21/892
Abstract: PROBLEM TO BE SOLVED: To provide a defect detector for a sheet, whose detection accuracy is high, and to provide a manufacturing method for the sheet. SOLUTION: The defect detector is provided with a laser light source and a light-receiving means, which receives light from the light source; and a memory, which stores and memorizes one-dimensional electric signals in a plurality of scanning portions obtained by the light-receiving means for each scanning operation of a laser beam, when the laser beam is scanned in a direction of prescribed angle, with reference to the width direction of the sheet to be measured and a signal processing means which constitutes to a two-dimensional image from a two-dimensional electrical signal, obtained by sequentially arranging the one-dimensional electrical signals in the plurality of scanning portions and which analyzes the image for detecting the defect of the sheet.
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公开(公告)号：JPH07280523A
公开(公告)日：1995-10-27
申请号：JP7079194
申请日：1994-04-08
Applicant: TORAY INDUSTRIES
Inventor： HIRATA HAJIME , TORIKAI JUN
Abstract: PURPOSE:To provide a method and device for measuring a thickness of a film capable of detecting thickness variation in width and longitudinal directions thereof in a processing line without cutting out the film and to provide a manufacturing method for managing a process by the method and device. CONSTITUTION:The thickness measuring device comprises moving means that move a position 6 for measuring a thickness of a film in width and longitudinal directions thereof, respectively. When measuring the thickness, one of the moving means is not operated. Thereby, it is possible to independently measure the thickness in the width direction or longitudinal direction. An reflection optical interference type thickness meter is used as a thickness detection device 6.
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公开(公告)号：JPH02212770A
公开(公告)日：1990-08-23
申请号：JP3114089
申请日：1989-02-13
Applicant: TORAY INDUSTRIES
Inventor： HIRATA HAJIME , NAKAJIMA HIROKI , YAMAZAKI CHIKAYASU
IPC: G01P5/12
Abstract: PURPOSE:To correctly and quickly measure the wind velocity or the like in a wide range by arranging in matrix many flow sensors which include an anemometer sensor element wherein a resistance value is a function of the temperature and a temperature compensating sensor element. CONSTITUTION:A cold wind blowing forwards from an opening end 2a of a chimney 2 passes through within a frame body 10 of a flow sensor device 1. During this time, the wind strikes an anemometer sensor element 16 and a temperature compensating sensor element 17 of each flow sensor 13. The element 16 generates heat when a voltage is applied to a bridge circuit 31. On the other hand, the temperature compensat ing sensor element 17 hardly generate heat. The calory of the heat generated by the element 16 is proportional to the difference between the surface temperature of the element 16 and the temperature of the air flow, namely, cold wind blowing out from the chimney 2. Therefore, a resistance value of the element 16 varies in accordance with the calory of the generated heat. In consequence, a voltage DELTAV corresponding to the temperature difference is generated between contact points (c) and (d) of the circuit 31, which voltage is output as a voltage vo1 through an amplifier 32. A voltage at a contact point (d), i.e., a terminal voltage of the element 17 is output as a voltage Vo2.
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公开(公告)号：JP2003240515A
公开(公告)日：2003-08-27
申请号：JP2002038375
申请日：2002-02-15
Applicant: TORAY INDUSTRIES
Inventor： UCHINO YOSHITAKA , ISHIKAWA KOJI , HIRATA HAJIME
IPC: G01B11/06
Abstract: PROBLEM TO BE SOLVED: To provide a film thickness measuring method using optical interference, in which a high-precision measurement is possible with a single measuring instrument even if a measurement range for an object is wide. SOLUTION: The film thickness of an object, which is to be measured, is acquired from an interference waveform which is acquired by spectroscopy, for each wavelength, of reflection light or transmission light from the object which is irradiated with light. The number of acquired extreme values of interference waveform or amplitude of the interference waveform is compared to a preset reference value, and depending on the result, one film-thickness calculation method is selected from among a plurality of different film-thickness calculation methods, for film thickness calculation. COPYRIGHT: (C)2003,JPO
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Patent Agency Ranking
公开(公告)号：JP2002301752A
公开(公告)日：2002-10-15
申请号：JP2002009903
申请日：2002-01-18
Applicant: TORAY INDUSTRIES
Inventor： UEHARA MASATSUGU , NAKAI YASUHIRO , HIRATA HAJIME
Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of a sheet which determines quickly and accurately the corresponding relations between thickness regulating means and thickness measuring positions and can control accurately the thickness of the sheet. SOLUTION: On the occasion of extruding a polymer in the shape of the sheet and forming it in a desired thickness by using a plurality of thickness regulating means, so as to obtain the sheet, the thickness measuring positions in the direction of the width of the sheet corresponding to the individual thickness regulating means are determined beforehand, and based on the corresponding relations between them, the thickness regulating means are controlled so that a thickness distribution in the direction of the width of the sheet be as an intended one set beforehand.
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公开(公告)号：JP2002096371A
公开(公告)日：2002-04-02
申请号：JP2000286882
申请日：2000-09-21
Applicant: TORAY INDUSTRIES
Inventor： UEHARA MASATSUGU , NAKAI YASUHIRO , HIRATA HAJIME
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a sheet and an apparatus for controlling thickness of the sheet by which the thickness in the width direction of the sheet can be uniformly and stably controlled over the whole width. SOLUTION: The apparatus for controlling used for a manufacturing process of the sheet in which a polymer is extruded by using a die with a plurality of thickness adjusting means arranged in the width direction and is molded to prepare the sheet with a required thickness and the thickness distribution in the width direction of the sheet is measured and based on the measured values, amount of operation added to the thickness adjusting means is controlled by means of a controlling apparatus is provided and the apparatus is characterized by a constitution in which by using a process model wherein a relation between amount of operation of the thickness adjusting means and the thickness of the sheet is respectively different at the corresponding parts at the end parts and the central part in the width direction of the sheet, the amount of operation is added to the thickness adjusting means in such a way that the thickness distribution in the width direction of the sheet is made to be the target thickness distribution set in advance.
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公开(公告)号：JP2002086539A
公开(公告)日：2002-03-26
申请号：JP2000283183
申请日：2000-09-19
Applicant: TORAY INDUSTRIES
Inventor： UEHARA MASATSUGU , NAKAI YASUHIRO , HIRATA HAJIME
Abstract: PROBLEM TO BE SOLVED: To provide a sheet manufacturing method by which the corresponding relation between a thickness adjusting means and a thickness measuring position can be precisely decided and the thickness of a sheet can be precisely controlled. SOLUTION: When a polymer is extruded in the form of a sheet and the sheet is obtained by molding the extrusions to a desired thickness using a plurality of the thickness adjusting means, each of the thickness adjusting means is controlled by predetermining a thickness measuring position corresponding to the sheet width direction at each of the thickness adjusting means so that the thickness distribution in the sheet width direction is equal to a preset target thickness distribution based on the corresponding relation.
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公开(公告)号：JP2002086537A
公开(公告)日：2002-03-26
申请号：JP2000276072
申请日：2000-09-12
Applicant: TORAY INDUSTRIES
Inventor： NAKAI YASUHIRO , UEHARA MASATSUGU , HIRATA HAJIME
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a sheet to be taken up in the good shape of a product roll. SOLUTION: This sheet manufacturing method comprises the steps to measure the thickness distribution, in the width direction, of the sheet, then control the thickness of the sheet based on the measurements and take up the measured sheet as a product roll. The integral value of differences between the measurements of the described thickness distribution and a first target value previously set based on the outer shape profile of the product roll, at each of the measuring positions based on the described measurements, is sought. Further, a second target value at each of the measuring positions is revised on the basis of the described integral value, and the thickness of the sheet at each of the measuring positions is controlled based on the difference between the second target value and the measurements of the thickness of the sheet at the present point of time.
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公开(公告)号：JP2000304651A
公开(公告)日：2000-11-02
申请号：JP11782999
申请日：1999-04-26
Applicant: TORAY INDUSTRIES
Inventor： SASAMOTO HIROKATA , KIMURA KATSUMI , HIRATA HAJIME , TAKEDA SHUZO , TSUDA TAKAHARU
Abstract: PROBLEM TO BE SOLVED: To reduce the generation of ozone by detecting the emission of a fluorescent substance for every coating position with a photo detector that is arranged one- dimensionally and comparing an image signal to be outputted with a specific reference value. SOLUTION: When a carrying device 3 carries a rear-surface plate 1 to an image pickup position, it gives a rear-surface plate approach signal to a control device 10. The control device 10 gives an image read start signal to an image-processing device 8, and the image-processing device 8 starts reading an image signal that is outputted from an image pickup device 6. An RGB signal amplification device 9 amplifies each RGB signal with a magnification being determined for each type for an image signal being inputted from the image pickup device 6 and outputs the signal to be image- processing device 8. The image-processing device 8 stores an image signal and detects a defect that is generated in the rear-surface plate 1 by image processing, thus installing an ultraviolet ray application means close to the rear-surface plate, reducing the intensity of ultraviolet rays, and maintaining a specific inspection performance. Also, the need for an ozone treatment facility is eliminated to reduce the cost.
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