JPS5473874A - Method of heat treatment for polymer tube - Google Patents
Method of heat treatment for polymer tubeInfo
- Publication number
- JPS5473874A JPS5473874A JP14065577A JP14065577A JPS5473874A JP S5473874 A JPS5473874 A JP S5473874A JP 14065577 A JP14065577 A JP 14065577A JP 14065577 A JP14065577 A JP 14065577A JP S5473874 A JPS5473874 A JP S5473874A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- tube
- polymer
- poured
- gravity
- 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.)
- Pending
Links
Abstract
PURPOSE: A heated liquid is poured into the inside of polymer tube whose top end is opened, thereby heating the tube and orienting uniformly even a polymer with high intital orientation stress by the gravity of the liquid at a high stretch ratio.
CONSTITUTION: The bottom end of a tube of (meth)acrylonitrile polymer is closed with, e.g., nip roll R1 and the top end is opened. A heated liquid, such as the liquid of coagulation bath, or fluidized solid is poured into the inside and the film is stretched in the wide direction by the gravity of the liquid. Then the tube is split with cutter C and taken up with roll R2.
EFFECT: Resulting films are high accurate in thickness and the production speed can be raised.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14065577A JPS5473874A (en) | 1977-11-25 | 1977-11-25 | Method of heat treatment for polymer tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14065577A JPS5473874A (en) | 1977-11-25 | 1977-11-25 | Method of heat treatment for polymer tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5473874A true JPS5473874A (en) | 1979-06-13 |
Family
ID=15273685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14065577A Pending JPS5473874A (en) | 1977-11-25 | 1977-11-25 | Method of heat treatment for polymer tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5473874A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0425289A2 (en) * | 1989-10-27 | 1991-05-02 | Plasticos Polyfilm S/A | Manufacture of mechanically conditioned thermoplastic films |
US5225139A (en) * | 1989-10-27 | 1993-07-06 | Plasticos Polyfilm S.A. | Process for the manufacturing of a mechanically conditioned thermoplastic film with biaxially recoverable stresses |
-
1977
- 1977-11-25 JP JP14065577A patent/JPS5473874A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0425289A2 (en) * | 1989-10-27 | 1991-05-02 | Plasticos Polyfilm S/A | Manufacture of mechanically conditioned thermoplastic films |
US5225139A (en) * | 1989-10-27 | 1993-07-06 | Plasticos Polyfilm S.A. | Process for the manufacturing of a mechanically conditioned thermoplastic film with biaxially recoverable stresses |
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