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    1.
    发明专利
    未知

    公开(公告)号：DE60138399D1

    公开(公告)日：2009-05-28

    申请号：DE60138399

    申请日：2001-09-17

    Applicant: TORAY INDUSTRIES

    Inventor： HIRATA HAJIME ,  UEHARA MASATSUGU ,  NAKAI YASUHIRO ,  TERAO JIRO

    IPC: B29C48/92 ,  B29C47/88 ,  B29C48/31 ,  B29C55/12 ,  G05B13/04

    Abstract: A sheet (1) obtained by extruding and molding a raw material using a die (4) with plural thickness adjusting means (10), characterized in that the power spectrum (90) of the thickness profile of the sheet (1) in the transverse direction expressed by the following formula P = F É �¢ F �¢ É ° F É = ˆ« - ˆžˆž f x �¢ e - jÉx �¢ dx (where f(x) is the thickness profile of the sheet in the transverse direction (in ¼ m), F(É) is the Fourier transform of f(x), x is a position in the transverse direction of the sheet (in m), É is a wave number (in m -1 ) , and F(É)* is the conjugate complex number of F(É) ; and j is an imaginary number, and j 2 = -1) and the mean sheet thickness T (¼ m) satisfy the following relation: The mean value X1 of the powers of smaller than a predetermined wave number a is 0.2 x T 2 or less and is smaller than the mean value X2 of the powers of wave number a and larger.

    2.
    发明专利
    未知

    公开(公告)号：DE60138121D1

    公开(公告)日：2009-05-07

    申请号：DE60138121

    申请日：2001-09-17

    Applicant: TORAY INDUSTRIES

    Inventor： UEHARA MASATSUGU ,  NAKAI YASUHIRO ,  HIRATA HAJIME

    IPC: B29C48/92 ,  B29C47/00 ,  B29C48/31

    Abstract: A method of manufacturing a sheet by extruding and forming a polymer by using a plurality of mouthpieces each having a thickness adjusting means, comprising the steps of varying the amount of operation applied to the thickness adjusting means along a specified time series pattern, measuring a thickness distribution in the lateral direction of the sheet, and rapidly and accurately determining the corresponding relation between the thickness adjusting means and a thickness measurement position based on the results of comparison between a variation in sheet thickness variation distribution thus obtained or the standard time series pattern of the variation in sheet thickness distribution and the time series pattern of the measured values of the thickness distribution.

    SHEET MANUFACTURING METHOD AND SHEET THICKNESS CONTROL DEVICE
    5.
    发明专利
    SHEET MANUFACTURING METHOD AND SHEET THICKNESS CONTROL DEVICE 失效

    公开(公告)号：JP2002086538A

    公开(公告)日：2002-03-26

    申请号：JP2000277701

    申请日：2000-09-13

    Applicant: TORAY INDUSTRIES

    Inventor： NAKAI YASUHIRO ,  UEHARA MASATSUGU ,  HIRATA HAJIME

    IPC: B29C47/86 ,  B29C48/31 ,  B29C48/92 ,  B29C47/16 ,  B29C47/92

    Abstract: PROBLEM TO BE SOLVED: To provide a sheet manufacturing method by which the low control precision attributed to the asymmetry of response by a thermal sheet thickness adjusting means is upgraded in a simple way as well as a sheet thickness control device. SOLUTION: This sheet thickness control device used in the sheet manufacturing process is of such a function that a polymer is extruded in the shape of a sheet with the help of a die equipped with a plurality of thermal thickness adjusting means and the extrusions are molded into the sheet of a desired thickness and further, the thickness distribution in the width direction, of the sheet is measured and an amount of heat to be applied to the thermal thickness adjusting means is controlled based on the measurements. In this control device the amount of heat is applied to the thermal thickness adjusting means in such a manner that the variation of the amount of heat to be applied to the thermal thickness adjusting means shows that it is greater when the amount of heat is decreased compared to the case when the amount of heat is increased.

    DEVICE FOR DETECTING DEFECT OF SHEET
    6.
    发明专利
    DEVICE FOR DETECTING DEFECT OF SHEET 失效

    公开(公告)号：JP2000329702A

    公开(公告)日：2000-11-30

    申请号：JP2000075393

    申请日：2000-03-17

    Applicant: TORAY INDUSTRIES

    Inventor： HAYASHI KOJI ,  TAKAMURA RYOJI ,  HIRATA HAJIME ,  NAKAI YASUHIRO

    IPC: G01B11/30 ,  G01N21/892

    Abstract: PROBLEM TO BE SOLVED: To improve detection sensitivity and accuracy by using a light reception means including a photoconductor with a reflection means at a non-light- reception surface side and a photoconductor with a rough face part at least at one portion of a surface. SOLUTION: The detection device of the defect of the surface or inside of a sheet 1 such as a plastic film is composed by equipping a reflection means such as an aluminum deposition film 24 in a photoconductor 21 for receiving diffusion light (b) being generated by a defect 5 caused by laser beams or the like from a light source part. Then, for example, while the sheet 1 is being run by a take-up roll, scanning is made in a specific direction by light beams (a) from a laser light source. The diffusion light (b) from the defect 5 entering the photoconductor 21 is detected by a photomultiplier or the like while repeating reflection or the like, but the leakage of the scattered light (b) is reduced by the aluminum deposition film 24 at the non-light-reception surface side for improving light reception efficiency. Even if at least one portion of the surface of the photoconductor 21 is set to a rough face part with a specific roughness, surface reflection can be suppressed, thus obtaining the same effect.

    PAINT INSPECTING METHOD AND DEVICE
    7.
    发明专利
    PAINT INSPECTING METHOD AND DEVICE 失效

    公开(公告)号：JP2000121631A

    公开(公告)日：2000-04-28

    申请号：JP31683498

    申请日：1998-10-19

    Applicant: TORAY INDUSTRIES

    Inventor： NAKAI YASUHIRO ,  HIRATA HAJIME

    IPC: G01N21/88 ,  G01N21/57 ,  G01N33/26

    Abstract: PROBLEM TO BE SOLVED: To precisely judge the quality of a paint from a received image by irradiating light to an object coated and dried with the paint to be inspected, and forming the received image based on the reflected light. SOLUTION: The light emitted from an irradiating means 1 is irradiated to the paint coated face of an object 4 coated with a paint. The light reflected on the coated face is received by a receiving means 2 and converted into an analog electric signal, and the analog electric signal is fed to an image processing means 3. The analog electric signal is A/D-converted by the image processing means 3, a received image is formed from the converted signal, a moving average process is applied to the received image to remove noises by an arithmetic means 6 in an image processing means, a double differential process is applied to emphasize defects, then a binalization process is applied. The number of picture elements having a high concentration value is obtained from the result of the binalization process, defects of the paint occurring on the coated face are extracted, and the quality of the paint is judged. A method for calculating the area and length of an image group having a high concentration value is also preferably used other than the method for calculating the number of picture elements having a high concentration value.

    DEFECT DETECTOR FOR SHEET
    8.
    发明专利
    DEFECT DETECTOR FOR SHEET 审中-公开

    公开(公告)号：JP2003240726A

    公开(公告)日：2003-08-27

    申请号：JP2002036351

    申请日：2002-02-14

    Applicant: TORAY INDUSTRIES

    Inventor： NAKAI YASUHIRO ,  KURAMATA OSAMU ,  HIRATA HAJIME

    IPC: G01B11/30 ,  G01N21/892

    Abstract: PROBLEM TO BE SOLVED: To provide a defect detector for a sheet capable of accurately detecting even an infinitesimal defect and to provide a method of manufacturing the sheet. SOLUTION: The defect detector for the sheet to detect the defect of the sheet to be detected is provided with a light source for emitting a linear light beam to the sheet on one surface of the sheet, and a photodetecting means having photodetectors opposed to one or another surface of the sheet and provided at a position in which the main beam of the illuminated linear light beams is not incident and aligned in parallel, and the light source and the photodetecting means are provided at an angle θ° of 0 COPYRIGHT: (C)2003,JPO

    SHEET MANUFACTURING METHOD AND SHEET THICKNESS CONTROL UNIT
    9.
    发明专利
    SHEET MANUFACTURING METHOD AND SHEET THICKNESS CONTROL UNIT 审中-公开

    公开(公告)号：JP2003089146A

    公开(公告)日：2003-03-25

    申请号：JP2001288401

    申请日：2001-09-21

    Applicant: TORAY INDUSTRIES

    Inventor： UEHARA MASATSUGU ,  HIRATA HAJIME ,  NAKAI YASUHIRO

    IPC: B29C48/92 ,  B29C48/31 ,  B29L7/00 ,  B29C47/92 ,  B29C47/16

    Abstract: PROBLEM TO BE SOLVED: To provide a sheet manufacturing method capable of rapidly controlling the thickness of a sheet to a desired thickness profile with high accuracy, and a control unit for the thickness of the sheet. SOLUTION: The sheet manufacturing method uses a die equipped with a plurality of thickness adjusting means to extrude a raw material and molding the extrudate to form a sheet and controlling the thickness of the sheet, while controlling the operation quantity applied to the thickness adjusting means. A step for measuring the thickness distribution in the width direction of the sheet; a sep for leading out an operation quantity time series, wherein a predetermined evaluation function for evaluating a sheet thickness forecast formula calculated, on the basis of a process model expressing the relation between the operation quantity and the thickness of the sheet and the measured value becomes an extreme value; and a step for outputting at least the first operation quantity in the operation quantity time series to the thickness adjusting means are repeated in predetermined timing.

    INSPECTION METHOD AND INSPECTION DEVICE FOR COLOR PASTE AND MANUFACTURE OF COLOR FILTER FOR LIQUID CRYSTAL DISPLAY
    10.
    发明专利
    INSPECTION METHOD AND INSPECTION DEVICE FOR COLOR PASTE AND MANUFACTURE OF COLOR FILTER FOR LIQUID CRYSTAL DISPLAY 失效

    公开(公告)号：JPH1151926A

    公开(公告)日：1999-02-26

    申请号：JP21299097

    申请日：1997-08-07

    Applicant: TORAY INDUSTRIES

    Inventor： NAKAI YASUHIRO ,  UKAWA SHUICHI

    IPC: G01N33/00 ,  G02B5/20

    Abstract: PROBLEM TO BE SOLVED: To reduce the labor and time for an inspection by applying shearing stress to a color paste, and evaluating and inspecting the generated coagulation by image processing. SOLUTION: A color paste 20 applied with shearing stress by a rotor is collected on an microscopic plate 10, it is arranged on a microscope 11, and transmitted illumination is radiated to the microscopic plate 10. The light transmitting the color paste 20 in the microscopic plate 10 is collected by a camera 13 above the microscope 11. The signal loaded into the camera 13 is A/D- converted and loaded into an image processing device 14, and image data and the dispersion value of the variable density value of all picture elements of image data are displayed on a monitor 15. When the variable density value is measured and the dispersion value is calculated, the ratio of the occurrence of coagulation when the color paste 20 is applied can be evaluated. This inspecting method can be conducted without applying the color paste 20, and the time and labor required for the inspection can be sharply decreased.

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