JPS5593420A - Preparation of thermoplastic resin film - Google Patents

Preparation of thermoplastic resin film

Info

Publication number
JPS5593420A
JPS5593420A JP2279A JP2279A JPS5593420A JP S5593420 A JPS5593420 A JP S5593420A JP 2279 A JP2279 A JP 2279A JP 2279 A JP2279 A JP 2279A JP S5593420 A JPS5593420 A JP S5593420A
Authority
JP
Japan
Prior art keywords
film
thermoplastic resin
drum
cooling drum
extruded
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
JP2279A
Other languages
Japanese (ja)
Other versions
JPS613246B2 (en
Inventor
Yoshiaki Tanihara
Takashi Ikeda
Itsuo Ogiuchi
Hiroshi Noda
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP2279A priority Critical patent/JPS5593420A/en
Priority to US06/107,280 priority patent/US4294791A/en
Priority to DE19803000192 priority patent/DE3000192A1/en
Priority to GB8000286A priority patent/GB2040791B/en
Publication of JPS5593420A publication Critical patent/JPS5593420A/en
Publication of JPS613246B2 publication Critical patent/JPS613246B2/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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
    • 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
    • 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
    • B29C2948/92504—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
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/92923—Calibration, after-treatment or cooling zone

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Moulding By Coating Moulds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a film which is used as the magnetic tape base and the like and has a uniform thickness by a method wherein thermoplastic resin is extruded in the form of a film from a die slit, cooled and set on a rotary cooling drum controlled at a constant speed and the film is slackened and taken up from the drum. CONSTITUTION:Thermoplastic resin such as polyethylene, polypropylene, polyethylene terephtalate, etc. is heated and fused, extruded in the form of a film from a die slit, cooled and set on a rotary cooling drum in which the no-load instantaneous rotation fluctuation ratio is controlled within the accuracy of + or -1%. The instantaneous rotation fluctuation ratio is given by a formula. The thickness fluctuation of the film obtained can be removed thereby. In addition, when more effective control for preventing thickness fluctuation is excuted by taking up the film on the cooling drum in a catenary suspension condition in addition to the effect of the constant speed control of the drum, the uniform thickness film will be obtained.
JP2279A 1979-01-05 1979-01-05 Preparation of thermoplastic resin film Granted JPS5593420A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2279A JPS5593420A (en) 1979-01-05 1979-01-05 Preparation of thermoplastic resin film
US06/107,280 US4294791A (en) 1979-01-05 1979-12-26 Process for producing thermoplastic resin film of markedly reduced thickness unevenness
DE19803000192 DE3000192A1 (en) 1979-01-05 1980-01-04 METHOD FOR PRODUCING A FILM FROM A THERMOPLASTIC RESIN WITH A SUBSTANTIALLY REDUCED THICKNESS UNIFORMITY
GB8000286A GB2040791B (en) 1979-01-05 1980-01-04 Process for producing thermoplastic resin film of markedly reduced thickness unevenness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2279A JPS5593420A (en) 1979-01-05 1979-01-05 Preparation of thermoplastic resin film

Publications (2)

Publication Number Publication Date
JPS5593420A true JPS5593420A (en) 1980-07-15
JPS613246B2 JPS613246B2 (en) 1986-01-31

Family

ID=11462770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2279A Granted JPS5593420A (en) 1979-01-05 1979-01-05 Preparation of thermoplastic resin film

Country Status (1)

Country Link
JP (1) JPS5593420A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60214923A (en) * 1984-04-11 1985-10-28 Sumitomo Bakelite Co Ltd Manufacture of thermoplastic resin film
JP2006341510A (en) * 2005-06-09 2006-12-21 Fujifilm Holdings Corp Thermoplastic film and its manufacturing method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627156B1 (en) * 1988-02-12 1990-08-24 Simon Patrick CLOSURE CAPSULE WITH MOBILE ELEMENT FOR BOTTLES AND OTHER CONTAINERS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60214923A (en) * 1984-04-11 1985-10-28 Sumitomo Bakelite Co Ltd Manufacture of thermoplastic resin film
JPH0129134B2 (en) * 1984-04-11 1989-06-08 Sumitomo Bakelite Co
JP2006341510A (en) * 2005-06-09 2006-12-21 Fujifilm Holdings Corp Thermoplastic film and its manufacturing method

Also Published As

Publication number Publication date
JPS613246B2 (en) 1986-01-31

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