JPS55113530A - Heat treatment of drawn thermoplastic resin film - Google Patents

Heat treatment of drawn thermoplastic resin film

Info

Publication number
JPS55113530A
JPS55113530A JP2160379A JP2160379A JPS55113530A JP S55113530 A JPS55113530 A JP S55113530A JP 2160379 A JP2160379 A JP 2160379A JP 2160379 A JP2160379 A JP 2160379A JP S55113530 A JPS55113530 A JP S55113530A
Authority
JP
Japan
Prior art keywords
roll
rolls
film
resin film
thermoplastic resin
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
JP2160379A
Other languages
Japanese (ja)
Other versions
JPS6216172B2 (en
Inventor
Kuniji Hashimoto
Kazumi Takayama
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 Petrochemical Co Ltd
Original Assignee
Mitsubishi Petrochemical Co 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 Petrochemical Co Ltd filed Critical Mitsubishi Petrochemical Co Ltd
Priority to JP2160379A priority Critical patent/JPS55113530A/en
Publication of JPS55113530A publication Critical patent/JPS55113530A/en
Publication of JPS6216172B2 publication Critical patent/JPS6216172B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

PURPOSE: To provide a resin film useful as a packaging material or the like and excellent in surface smoothness, dimensional stability at high temperature, and the like by a method wherein temperatures and circumferential speeds of rolls are specified, when a longitudinally drawn thermoplastic resin film is heat-treated by a multi-stage roll.
CONSTITUTION: A drawn thermoplastic resin film 1 is guided via a drawing-side guide roll 2 to a heating roll 3, which is set at a temperature T1 above the resin drawing temperature but below the melting point of the resin and rotated at a circumferential speed r1 equal to or slightly higher than that of the roll 2. Thus, the film 1 is heated to the temperature T1. Heating rolls 4, 5 are set at stepwise- elevated temperatures. The circumferential speeds of rolls are so set that they are high enough to prevent the film between rolls from looseness and that the ratio of the circumferential speed difference between a preceding roll and the following roll to the circumferential speed of the preceding roll is largest for the most upstream pair of rolls. Thus, the film 1 is subjected to heat treatment at slowed down pace.
COPYRIGHT: (C)1980,JPO&Japio
JP2160379A 1979-02-26 1979-02-26 Heat treatment of drawn thermoplastic resin film Granted JPS55113530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2160379A JPS55113530A (en) 1979-02-26 1979-02-26 Heat treatment of drawn thermoplastic resin film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2160379A JPS55113530A (en) 1979-02-26 1979-02-26 Heat treatment of drawn thermoplastic resin film

Publications (2)

Publication Number Publication Date
JPS55113530A true JPS55113530A (en) 1980-09-02
JPS6216172B2 JPS6216172B2 (en) 1987-04-10

Family

ID=12059606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2160379A Granted JPS55113530A (en) 1979-02-26 1979-02-26 Heat treatment of drawn thermoplastic resin film

Country Status (1)

Country Link
JP (1) JPS55113530A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63194977U (en) * 1987-05-29 1988-12-15
JPH0270078U (en) * 1988-11-15 1990-05-28

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5282978A (en) * 1975-12-30 1977-07-11 Ota Kinnosuke Heatttreated material of stretching moldings

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5282978A (en) * 1975-12-30 1977-07-11 Ota Kinnosuke Heatttreated material of stretching moldings

Also Published As

Publication number Publication date
JPS6216172B2 (en) 1987-04-10

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