JPS5642628A - Control device for plastic sheet extruder - Google Patents

Control device for plastic sheet extruder

Info

Publication number
JPS5642628A
JPS5642628A JP11725779A JP11725779A JPS5642628A JP S5642628 A JPS5642628 A JP S5642628A JP 11725779 A JP11725779 A JP 11725779A JP 11725779 A JP11725779 A JP 11725779A JP S5642628 A JPS5642628 A JP S5642628A
Authority
JP
Japan
Prior art keywords
sheeting
sheet
extruder
thickness
constant
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
JP11725779A
Other languages
Japanese (ja)
Other versions
JPS5736847B2 (en
Inventor
Hideki Kimura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11725779A priority Critical patent/JPS5642628A/en
Publication of JPS5642628A publication Critical patent/JPS5642628A/en
Publication of JPS5736847B2 publication Critical patent/JPS5736847B2/ja
Granted 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92019—Pressure
    • 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
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92466—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
    • 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
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • 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
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • 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
    • B29C2948/92961—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
    • 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
    • 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

Abstract

PURPOSE:To reduce an unevenness in the thickness of a sheet, by a method wherein an extruding amout is estimated by measuring a resin pressure in an extruder, and a sheeting speed is regulated. CONSTITUTION:A relation of Q=kP exists between an extruding quantity Q and a resin pressure P presuming that a proportional constant is k, and an equation of Q=WtV is held, where W is a sheeting width, t is a thickness, and V is a sheeting speed. This is formulated into a formula of t=(k/W)(P/V). The sheeting width W is considered to be almost constant, and thereby V may be controlled according to P so as to keep P/V constant. In a sheet extruder 1, a sheet is rolled out through a flat die 4 by means of a cooling roll 5 to form a sheeting 7. Accordingly, the unevenness in the thickness of the sheet can be reduced by adjusting a winding speed of the cooling roll 5 and the like according to the detected pressure after a resin pressure of the extruder 1 is detected 11.
JP11725779A 1979-09-14 1979-09-14 Control device for plastic sheet extruder Granted JPS5642628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11725779A JPS5642628A (en) 1979-09-14 1979-09-14 Control device for plastic sheet extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11725779A JPS5642628A (en) 1979-09-14 1979-09-14 Control device for plastic sheet extruder

Publications (2)

Publication Number Publication Date
JPS5642628A true JPS5642628A (en) 1981-04-20
JPS5736847B2 JPS5736847B2 (en) 1982-08-06

Family

ID=14707277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11725779A Granted JPS5642628A (en) 1979-09-14 1979-09-14 Control device for plastic sheet extruder

Country Status (1)

Country Link
JP (1) JPS5642628A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62183324A (en) * 1986-02-07 1987-08-11 Tsutsunaka Plast Kogyo Kk Thickness correcting method for sheetlike matter in extrusion molding
JP2012176604A (en) * 2011-01-31 2012-09-13 Kyoraku Co Ltd Molding method of resin molded product
EP2428350A3 (en) * 2010-09-14 2014-09-17 Kyoraku Co., Ltd. Duct molding method and duct
CN112659526A (en) * 2019-10-15 2021-04-16 布鲁克纳机械有限责任两合公司 Method for adjusting operating point of film stretcher and film stretcher

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4923858A (en) * 1972-06-29 1974-03-02
JPS50149753A (en) * 1974-05-22 1975-12-01
JPS5113861A (en) * 1974-07-24 1976-02-03 Tokyo Shibaura Electric Co
JPS5437168A (en) * 1977-08-30 1979-03-19 Teijin Ltd Controlling method of film thickness of film forming machine for resin

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4923858A (en) * 1972-06-29 1974-03-02
JPS50149753A (en) * 1974-05-22 1975-12-01
JPS5113861A (en) * 1974-07-24 1976-02-03 Tokyo Shibaura Electric Co
JPS5437168A (en) * 1977-08-30 1979-03-19 Teijin Ltd Controlling method of film thickness of film forming machine for resin

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62183324A (en) * 1986-02-07 1987-08-11 Tsutsunaka Plast Kogyo Kk Thickness correcting method for sheetlike matter in extrusion molding
EP2428350A3 (en) * 2010-09-14 2014-09-17 Kyoraku Co., Ltd. Duct molding method and duct
JP2012176604A (en) * 2011-01-31 2012-09-13 Kyoraku Co Ltd Molding method of resin molded product
CN112659526A (en) * 2019-10-15 2021-04-16 布鲁克纳机械有限责任两合公司 Method for adjusting operating point of film stretcher and film stretcher
US11618198B2 (en) 2019-10-15 2023-04-04 Brückner Maschinenbau GmbH & Co. KG Method for setting an operating point of a film stretching machine and film stretching system for producing a plastics film

Also Published As

Publication number Publication date
JPS5736847B2 (en) 1982-08-06

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