JPS55113530A - Heat treatment of drawn thermoplastic resin film - Google Patents
Heat treatment of drawn thermoplastic resin filmInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5282978A (en) * | 1975-12-30 | 1977-07-11 | Ota Kinnosuke | Heatttreated material of stretching moldings |
-
1979
- 1979-02-26 JP JP2160379A patent/JPS55113530A/en active Granted
Patent Citations (1)
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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