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    1.
    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.

    2.
    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.

    SHEET MANUFACTURING METHOD AND SHEET THICKNESS CONTROL UNIT
    6.
    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.

    METHOD FOR PRODUCING SHEET AND DEVICE FOR CONTROLLING THICKNESS OF SHEET
    7.
    发明专利
    METHOD FOR PRODUCING SHEET AND DEVICE FOR CONTROLLING THICKNESS OF SHEET 失效

    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

    IPC: B29C48/92 ,  B29C47/92

    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.

    MANUFACTURING METHOD OF SHEET
    8.
    发明专利
    MANUFACTURING METHOD OF SHEET 审中-公开

    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

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

    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.

    METHOD FOR MANUFACTURING SHEET AND APPARATUS FOR CONTROLLING THICKNESS OF SHEET
    9.
    发明专利
    METHOD FOR MANUFACTURING SHEET AND APPARATUS FOR CONTROLLING THICKNESS OF SHEET 失效

    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

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

    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.

    SHEET MANUFACTURING METHOD
    10.
    发明专利
    SHEET MANUFACTURING METHOD 失效

    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

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

    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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