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公开(公告)号：JP2002225116A
公开(公告)日：2002-08-14
申请号：JP2001029379
申请日：2001-02-06
Applicant: TORAY INDUSTRIES
Inventor： NAKAI YASUHIRO , UEHARA MASATSUGU , HIRATA HAJIME
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a sheet which can control the thickness of the sheet quickly and precisely to a desired thickness profile and a device for controlling the thickness of the sheet. SOLUTION: In the method for producing the sheet, a raw material is extruded by using a die having N (natural number of 2 or more) thickness adjusting means and molded into the sheet, an operation quantity to be output to the thickness adjusting means is calculated, the means are controlled based on the calculated operation quantity, and the thickness of the sheet is controlled. When the difference between the calculated operation quantity of the i-th (i=1-N) thickness adjusting means and an operation quantity to be output to the adjacent means is a prescribed value T or above, an operation quantity to be output to the i-th means is corrected to reduce the difference, an operation quantity to be output to the adjacent means is corrected based on a process model expressing the relationship between an operation quantity to be output and the thickness of the sheet to be obtained, and each corrected operation quantity is output to each thickness adjusting means.
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公开(公告)号：JPH11326238A
公开(公告)日：1999-11-26
申请号：JP6844299
申请日：1999-03-15
Applicant: TORAY INDUSTRIES
Inventor： NAKAI YASUHIRO , UKAWA SHUICHI , HIRATA HAJIME , ITO TETSUYA
IPC: D06H3/08 , D04H17/00 , G01N21/88 , G01N21/89 , G01N21/892
Abstract: PROBLEM TO BE SOLVED: To highly accurately detect defects of even a sheet woven irregularly, by arranging sheet polarizers between the sheet to be measured and a light source, a photodetecting part with specific angles in direction of polarization and detecting bright, dark defects on the basis of binarized data of image signals. SOLUTION: This apparatus has a light source 1 and a photodetecting part 3 with a non-woven cloth 4 held therebetween. Sheet polarizers 2a, 2b are arranged between the non-woven cloth 4 and the light source 1 and between the non-woven cloth 4 and the photodetecting part 3 with approximately 70-110 deg. of directions of polarization. A light from the light source 1 passes the sheet polarizer 2a, non-woven cloth 4 and sheet polarizer 2b to be detected at the photodetecting part 3. The detected light is binarized by a binarization process means 6a to larger, smaller signal values (a), (b) (a>b) than a first threshold value, and larger, smaller signals than a second threshold value smaller than the first threshold value are binarized at a binarization process means 6b to values (b), (c) (b>c). The binarized signals are detected by a defect detection means 7 as bright defects if showing the value (a) to an input signal or as dark defects is showing the value (c). The detected defect is marked by 11 at an end part of the non-woven cloth 4.
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13.发明专利
公开(公告)号：JPH0992692A
公开(公告)日：1997-04-04
申请号：JP20308496
申请日：1996-07-12
Applicant: TORAY INDUSTRIES
Inventor： NAKAI YASUHIRO , TAKEDA SHUZO , NAGAYAMA TAKASHI
IPC: G01N21/89 , G01N21/892 , H01L21/60
Abstract: PROBLEM TO BE SOLVED: To make it possible to accurately inspect both sides of a TAB tape for defects with one inspection stage and perform stable identifying operation with high accuracy by using color images comprising blue color images and/or green color images as processing images. SOLUTION: A first image capture means 101 and a second image capture means 102 use blue and blue images, blue and green images and green and blue images. When a first color image and a second color image are in blue and blue, the illumination light from a second illuminating means 202 is not detected by the first image capture means 101 because the tape base material is opaque to blue light. Therefore, the images of the front and back of a tape are not influenced by the illumination on the opposite side, which allows defects in resin areas and copper pattern area and defects due to sticking foreign matters to be detected. It is also possible to detect defects in resin areas and sticking resin on the back of the tape.
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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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Patent Agency Ranking
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：JP2000241146A
公开(公告)日：2000-09-08
申请号：JP4286999
申请日：1999-02-22
Applicant: TORAY INDUSTRIES
Inventor： NAKAI YASUHIRO , ISOZAKI YUUJI , YOROZU SHUNICHI
IPC: G01B11/30
Abstract: PROBLEM TO BE SOLVED: To evaluate quality by irradiating a surface of a sheet with a light in an oblique direction, forming a photoreceiving image based on a reflected light from the sheet, and measuring protrusions and recesses of the sheet represented on the image in a short time. SOLUTION: A light emitted from an emitting means 1 irradiates a surface of the sheet 4. The light reflected on the surface of the sheet is received by a photoreceiving means 2, converted into an analog electric signal, which is, in turn, transmitted to an image processing means 3. The means 3 A-D converts the transmitted signal to form a photoreceiving image from the converted signal. A standard deviation of a density distribution of the image is calculated, and the sheet is evaluated according to protrusions and recesses of the surface of the sheet represented on the image.
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公开(公告)号：JP2002365225A
公开(公告)日：2002-12-18
申请号：JP2002065206
申请日：2002-03-11
Applicant: TORAY INDUSTRIES
Inventor： TAKAMURA RYOJI , NAKAI YASUHIRO , HIRATA HAJIME
IPC: G01B11/30 , B65H26/02 , G01N21/892 , G06T1/00
Abstract: PROBLEM TO BE SOLVED: To provide an inspection method and apparatus of a sheet material for easily detecting wrinkles without any need for patrolling work by a human when detecting the wrinkles being generated when winding up the sheet material in a roll. SOLUTION: As the method for detecting wrinkles S being generated when winding up the sheet material 2 in a roll, light is applied to a roll 3 of the sheet material 2 from either of light sources 4A and 4B, and at the same time the image of the roll 3 is picked up by using a camera 5 where visual field width has been set to a range of 50-500 mm, and the wrinkles S are detected based on the reflection light from the roll 3.
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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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