JPS56133135A - Controlling method for thickness of film - Google Patents

Controlling method for thickness of film

Info

Publication number
JPS56133135A
JPS56133135A JP3489880A JP3489880A JPS56133135A JP S56133135 A JPS56133135 A JP S56133135A JP 3489880 A JP3489880 A JP 3489880A JP 3489880 A JP3489880 A JP 3489880A JP S56133135 A JPS56133135 A JP S56133135A
Authority
JP
Japan
Prior art keywords
thickness
profile
bolt
film
deviation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3489880A
Other languages
Japanese (ja)
Other versions
JPS6359856B2 (en
Inventor
Nobuhiko Kogo
Yoshimitsu Tsutsui
Hiroharu Kato
Toshio Kishigami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP3489880A priority Critical patent/JPS56133135A/en
Priority to DE8181300758T priority patent/DE3176317D1/en
Priority to EP81300758A priority patent/EP0035356B1/en
Priority to US06/238,358 priority patent/US4409160A/en
Publication of JPS56133135A publication Critical patent/JPS56133135A/en
Publication of JPS6359856B2 publication Critical patent/JPS6359856B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE:To adjust the deviation of thickness in a short time when the thickness deviation of the product film already drawn in lateral direction is beyond allowance by modifying the thickness of the profile before being drawn laterally. CONSTITUTION:Thickness in the direction of width of sheet 7 which is not drawn laterally yet is measured by thickness measurement device 19, and the result is inputted to an operational control device 17 where the thickness deviation against the fixed profile is calculated by each die operating bolt 3. The result is sent to an automatic bolt adjusting device 2 and the bolt 3 is rotated to adjust output and modify thickness deviation. By repeating the operation to measure the result by the device 19, the profile of the sheet width direction is fixed within allowance. Then thickness deviation of film 15 already drawn laterally is measured by a thickness measurement device 14 and when beyond allowance the fixed profile of sheet 7 is modified, the bolt adjusting degree corresponding to the modified profile is calculated, and after the bolt 3 is operated according to this calculation, the operation to measure the thickness of film 15 is repeated.
JP3489880A 1980-02-28 1980-03-21 Controlling method for thickness of film Granted JPS56133135A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP3489880A JPS56133135A (en) 1980-03-21 1980-03-21 Controlling method for thickness of film
DE8181300758T DE3176317D1 (en) 1980-02-28 1981-02-24 Method and apparatus for controlling the thickness of a film product
EP81300758A EP0035356B1 (en) 1980-02-28 1981-02-24 Method and apparatus for controlling the thickness of a film product
US06/238,358 US4409160A (en) 1980-02-28 1981-02-25 Method for controlling the thickness of a film product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3489880A JPS56133135A (en) 1980-03-21 1980-03-21 Controlling method for thickness of film

Publications (2)

Publication Number Publication Date
JPS56133135A true JPS56133135A (en) 1981-10-19
JPS6359856B2 JPS6359856B2 (en) 1988-11-21

Family

ID=12426993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3489880A Granted JPS56133135A (en) 1980-02-28 1980-03-21 Controlling method for thickness of film

Country Status (1)

Country Link
JP (1) JPS56133135A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4931982A (en) * 1987-07-17 1990-06-05 Toray Industries, Inc. Method for controlling the thickness of a sheet material and method for monitoring a correspondence relationship between the thickness distribution across a sheet material and means for adjusting the thickness
US4994976A (en) * 1988-02-17 1991-02-19 Mitsubishi Jukogyo Kabushiki Kaisha Film thickness controller
JPH1110728A (en) * 1997-05-01 1999-01-19 Mitsui Chem Inc Equipment for manufacture of oriented film, and birefringence measuring method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5236165A (en) * 1975-09-18 1977-03-19 Mitsubishi Plastics Ind Method of adjusting thickness of thermoplastic resin film
JPS5271573A (en) * 1975-12-12 1977-06-15 Mitsubishi Plastics Ind Method of adjusting margin thickness of thermoplastic resin elongation film
JPS5272772A (en) * 1975-12-15 1977-06-17 Mitsubishi Plastics Ind Method of adjusting margin thickness of thermoplastic resin elongation film

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5236165A (en) * 1975-09-18 1977-03-19 Mitsubishi Plastics Ind Method of adjusting thickness of thermoplastic resin film
JPS5271573A (en) * 1975-12-12 1977-06-15 Mitsubishi Plastics Ind Method of adjusting margin thickness of thermoplastic resin elongation film
JPS5272772A (en) * 1975-12-15 1977-06-17 Mitsubishi Plastics Ind Method of adjusting margin thickness of thermoplastic resin elongation film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4931982A (en) * 1987-07-17 1990-06-05 Toray Industries, Inc. Method for controlling the thickness of a sheet material and method for monitoring a correspondence relationship between the thickness distribution across a sheet material and means for adjusting the thickness
US4994976A (en) * 1988-02-17 1991-02-19 Mitsubishi Jukogyo Kabushiki Kaisha Film thickness controller
JPH1110728A (en) * 1997-05-01 1999-01-19 Mitsui Chem Inc Equipment for manufacture of oriented film, and birefringence measuring method

Also Published As

Publication number Publication date
JPS6359856B2 (en) 1988-11-21

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