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    1.
    发明专利
    未知

    公开(公告)号：DE3875433T2

    公开(公告)日：1993-04-22

    申请号：DE3875433

    申请日：1988-07-15

    Applicant: TORAY INDUSTRIES

    Inventor： HAYASHIDA SHINICHIRO ,  YOROZU SHUNICHI ,  OKASHIRO HIDETOSHI

    IPC: B29C48/31 ,  B29C48/92 ,  G05D5/03 ,  B29C47/92

    Abstract: A sheet material 26 is formed by delivering a web 22 of molten material from a die 21 to a cooling drum 23, biaxially stretching the resultant sheet by means of an apparatus 24 providing longitudinal stretching and an apparatus 25 providing lateral stretching and winding up the sheet 26 by means of a winder 27. The thickness distribution across the sheet is measured at each of positions 28, 29, 30 and the final thickness distribution at position 30 is automatically controlled by a control processing unit CPU 31. In this method of control, a correspondence relationship between adjustment of adjusting means 32 arranged on the die 21 and variation of thickness distribution of the sheet material 26 after formation thereof is sequentially estimated using a Kalman filter built into the control processing unit CPU 31 and from the estimated relationship the adjusting means 32 are controlled by optimum amounts in order to enable the thickness distribution to approach a target distribution. The accuracy of thickness control of the sheet material can be greatly increased and also the accurate control can automatically follow any variation in the conditions of a sheet forming process.

    2.
    发明专利
    未知

    公开(公告)号：DE3875433D1

    公开(公告)日：1992-11-26

    申请号：DE3875433

    申请日：1988-07-15

    Applicant: TORAY INDUSTRIES

    Inventor： HAYASHIDA SHINICHIRO ,  YOROZU SHUNICHI ,  OKASHIRO HIDETOSHI

    IPC: B29C48/31 ,  B29C48/92 ,  G05D5/03 ,  B29C47/92

    Abstract: A sheet material 26 is formed by delivering a web 22 of molten material from a die 21 to a cooling drum 23, biaxially stretching the resultant sheet by means of an apparatus 24 providing longitudinal stretching and an apparatus 25 providing lateral stretching and winding up the sheet 26 by means of a winder 27. The thickness distribution across the sheet is measured at each of positions 28, 29, 30 and the final thickness distribution at position 30 is automatically controlled by a control processing unit CPU 31. In this method of control, a correspondence relationship between adjustment of adjusting means 32 arranged on the die 21 and variation of thickness distribution of the sheet material 26 after formation thereof is sequentially estimated using a Kalman filter built into the control processing unit CPU 31 and from the estimated relationship the adjusting means 32 are controlled by optimum amounts in order to enable the thickness distribution to approach a target distribution. The accuracy of thickness control of the sheet material can be greatly increased and also the accurate control can automatically follow any variation in the conditions of a sheet forming process.

    INLINE MEASUREMENT OF UNSTRETCHED PORTION OF FILM
    4.
    发明专利
    INLINE MEASUREMENT OF UNSTRETCHED PORTION OF FILM 失效

    公开(公告)号：JPH01202604A

    公开(公告)日：1989-08-15

    申请号：JP2840588

    申请日：1988-02-09

    Applicant: TORAY INDUSTRIES

    Inventor： YOROZU SHUNICHI ,  HAYASHIDA SHINICHIRO

    IPC: G01B11/04

    Abstract: PURPOSE:To enable detection of the boundary between stretched and unstretched portions of a film, by interposing two sheets of polarizers between a projector and an image sensor. CONSTITUTION:A film 1 runs until it is released from a tenter clip and wound with a take off device after the completion of a stretching during the inline. An image sensor 3 is so arranged to cover the whole of an unstretched portion 4 at an end of the film 1 in a field of view. Then, polarizers 5 and 5' are inserted between a projector 2 and the image sensor 3 and a controller 7 processes a signal detected with a CCD of the image sensor 3 and a necessary data is stored to display. With such an arrangement, as there is a difference in the molecular orienting property between the stretched and unstretched portions 4 of the film 1, the use of the polarizers 5 and 5' enables continuous measurement of the boundary between the both portions and that between the unstretched portion and air.

    VISCOSITY MEASURING INSTRUMENT
    5.
    发明专利
    VISCOSITY MEASURING INSTRUMENT 失效

    公开(公告)号：JPS62289746A

    公开(公告)日：1987-12-16

    申请号：JP13263186

    申请日：1986-06-10

    Applicant: TORAY INDUSTRIES ,  TORAY ENG CO LTD

    Inventor： HAYASHIDA SHINICHIRO ,  UEDA YUJI

    IPC: G01N11/00 ,  G01N11/08

    Abstract: PURPOSE:To easily measure the viscosity of fluid even when a high vacuum is produced in a fluid passage by opening a fluid intake passage in a trumpet shape in a projection surface in level with the internal wall surface of the fluid passage. CONSTITUTION:The projection surface 5 of a viscosity measuring instrument 1 is in level with the internal wall surface 3a of the fluid passage 3 and the fluid intake passage 16 which is open in the projection surface 5 is open in the trumpet shape, so even if a high vacuum is produced in the fluid passage 3, for example, the high-viscosity fluid flowing along the internal wall surface 3a enters the fluid intake passage 16 naturally and smoothly and is guided inward along the trumpet-shaped wall surface. The fluid is sucked forcibly by a gear pump 6 through communicating passage parts 21a and 21b to form a continuous flow. Thus, the fluid is sent to a viscometer 7 continuously and then the viscosity is measured continuously.

    CONTROL METHOD FOR SHEET-SHAPED MATERIAL AND MONITORING METHOD FOR CORRESPONDING RELATION BETWEEN THICKNESS DISTRIBUTION AND SHEET-SHAPED MATERIAL AND THICKNESS ADJUSTING MEANS
    6.
    发明专利
    CONTROL METHOD FOR SHEET-SHAPED MATERIAL AND MONITORING METHOD FOR CORRESPONDING RELATION BETWEEN THICKNESS DISTRIBUTION AND SHEET-SHAPED MATERIAL AND THICKNESS ADJUSTING MEANS 失效

    公开(公告)号：JPH01232018A

    公开(公告)日：1989-09-18

    申请号：JP17714488

    申请日：1988-07-18

    Applicant: TORAY INDUSTRIES

    Inventor： HAYASHIDA SHINICHIRO ,  OKASHIRO HIDETOSHI ,  YOROZU SHUNICHI

    IPC: B29C48/92 ,  B29L7/00

    Abstract: PURPOSE:To enhance control accuracy of thickness of a sheet-shaped material by grasping the corresponding relation between a discharged molten material thickness adjusting means of a cap and the thickness distribution of the sheet-shaped material after molding by means of a Karman filter and controlling the thickness of the sheet- shaped material based on said relation. CONSTITUTION:Molten resin 22 discharged in the shape of a sheet from a cap 21 passes through the sheet-shaped material molding process and molded into a film 26 of given thickness. Then, measured data by thickness gages 28, 29 and 30 are put into a CPU 31. On the other hand, a number of adjusting bolts 32 to adjust slit of the cap 21 are disposed by small pitches, and the expansion amount of its Y-Y direc tion is adjusted by the temperature control of a heater 35, based upon which the slit space of a slit-shaped discharge outlet 33 and the thickness of the discharged sheet can be adjusted. As a Karman filter is incorporated in the CPU 31, the thickness distribution of the film can correspond with respective adjusting bolts 32 of the cap 21 after respective processes, and the thickness profile is controlled close to the target value with high accuracy.

    DIE FOR EXTRUDING SHEET-LIKE MATERIAL
    10.
    发明专利
    DIE FOR EXTRUDING SHEET-LIKE MATERIAL 失效

    公开(公告)号：JPS62169616A

    公开(公告)日：1987-07-25

    申请号：JP997986

    申请日：1986-01-22

    Applicant: TORAY INDUSTRIES

    Inventor： OKASHIRO HIDETOSHI ,  HAYASHIDA SHINICHIRO ,  NOGAMI NORIICHIROU

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

    Abstract: PURPOSE:To keep a good controllability of heat energy and to obtain a die for extruding a sheet-like material of uniform thickness by providing a controlling device being able to control the amt. of heat energy supplied to whole pushing/pulling transmitting devices to be constant. CONSTITUTION:Before extruding a thermoplastic resin, the temp. of a die for extrusion and the thermoplastic resin are kept almost uniform at T deg.C by the heat energy Q1 supplied to a main heating device 2. The energy supplied to whole supplementary heating devices 4 is Q2 and the energy supplied to each supplementary heating device 41-49 is equally Q2/9. Marry sets of pushing/ pulling transmitting devices 3 almost uniformly thermally expand with a specified amt. over he whole width of the die. A controlling device 10, keeping the whole energy Q2 supplied to the supplementary heating devices 41-49 to be constant by reducing an energy DELTAQ2 supplied to each supplementary heating device 41-43, 46-49 to offset the increment DELTAQ2 supplied to the supplementary heating device 45 to keep the thickness of the extruded film to be constant, is provided.

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