JPS54153877A - Method of controlling film thickness - Google Patents

Method of controlling film thickness

Info

Publication number
JPS54153877A
JPS54153877A JP6262578A JP6262578A JPS54153877A JP S54153877 A JPS54153877 A JP S54153877A JP 6262578 A JP6262578 A JP 6262578A JP 6262578 A JP6262578 A JP 6262578A JP S54153877 A JPS54153877 A JP S54153877A
Authority
JP
Japan
Prior art keywords
bolts
thickness
deviation
film thickness
controlling
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
JP6262578A
Other languages
Japanese (ja)
Other versions
JPS5933092B2 (en
Inventor
Yoshimitsu Tsutsui
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 JP53062625A priority Critical patent/JPS5933092B2/en
Publication of JPS54153877A publication Critical patent/JPS54153877A/en
Publication of JPS5933092B2 publication Critical patent/JPS5933092B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B29C2948/92152—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92428—Calibration, after-treatment, or cooling zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
    • B29C48/313—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections by positioning the die lips

Abstract

PURPOSE:The number of bolts that are operated for controlling the gap of lip provided in the path of the die is automatically limited when the deviation in the distribution of film thickness is large, thus shortening the time for adjusting the film thikness and increasing the accuracy of the thickness. CONSTITUTION:Thicknesses in the width direction are measured by each instrument and the deviation of the measured values in thickness is calculated by the arithmetic unit 3 to the set values corresponding to each bolt 3 for controlling the die. On the basis of the deviations, manipulated variables of bolts 3 are calculated according to the previously specified method. Further, bolts 3 are made to revolve by prescrived amount by bolt automatic controller 4 to deform the shape of lip for controlling die 5, thus modifying the deviation of film thickness. The results are measured by instrument 1 and the similar operations are repeated several times so that the film thickness is converged to the objective film profile in the width direction. When the deviation is large, the number of bolts operated is limited and when the diviation becomes small, almost all of the bolts are operated, thus shortening the time for converging the thickness.
JP53062625A 1978-05-25 1978-05-25 Film thickness adjustment method Expired JPS5933092B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53062625A JPS5933092B2 (en) 1978-05-25 1978-05-25 Film thickness adjustment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53062625A JPS5933092B2 (en) 1978-05-25 1978-05-25 Film thickness adjustment method

Publications (2)

Publication Number Publication Date
JPS54153877A true JPS54153877A (en) 1979-12-04
JPS5933092B2 JPS5933092B2 (en) 1984-08-13

Family

ID=13205681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53062625A Expired JPS5933092B2 (en) 1978-05-25 1978-05-25 Film thickness adjustment method

Country Status (1)

Country Link
JP (1) JPS5933092B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444229A1 (en) * 2010-10-24 2012-04-25 Maku Ag Calibration robot for broad slit extrusion dies
EP2657000A1 (en) * 2012-04-25 2013-10-30 Maku Ag Device for producing flat products and method for producing same
EP2865511A1 (en) * 2013-10-25 2015-04-29 Magna Steyr Fuel Systems GesmbH Extrusion die and process for plate or film extrusion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444229A1 (en) * 2010-10-24 2012-04-25 Maku Ag Calibration robot for broad slit extrusion dies
EP2657000A1 (en) * 2012-04-25 2013-10-30 Maku Ag Device for producing flat products and method for producing same
US9649804B2 (en) 2012-04-25 2017-05-16 Maku Ag Apparatus for producing flat-web products, and method for setting it up
EP2865511A1 (en) * 2013-10-25 2015-04-29 Magna Steyr Fuel Systems GesmbH Extrusion die and process for plate or film extrusion
US10456969B2 (en) 2013-10-25 2019-10-29 Magna Steyr Fuel Systems Gesmbh Nozzle for sheet or film extrusion

Also Published As

Publication number Publication date
JPS5933092B2 (en) 1984-08-13

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