JPS649236A - Production of piezoelectric film - Google Patents
Production of piezoelectric filmInfo
- Publication number
- JPS649236A JPS649236A JP16392287A JP16392287A JPS649236A JP S649236 A JPS649236 A JP S649236A JP 16392287 A JP16392287 A JP 16392287A JP 16392287 A JP16392287 A JP 16392287A JP S649236 A JPS649236 A JP S649236A
- Authority
- JP
- Japan
- Prior art keywords
- film
- roll
- pairs
- width
- super
- 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
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Organic Insulating Materials (AREA)
Abstract
PURPOSE:To obtain a film improved in longitudinal tearability and being side and super-thin even at a low draw ratio, by uniaxially stretching a preheated stock vinylidene fluoride resin film by means of two pairs of pinch rolls of a roll distance smaller than a specified value. CONSTITUTION:A stock vinylidene fluoride resin film preheated with a preheating roll 2 is fed to two pairs of pinch rolls 3, 3' and 4, 4', oriented uniaxially, annealed with an annealing roll 5 and wound around a take-up roll 6. The distance between the two pairs of rolls 3, 3' and 4, 4' is adjusted so that it is at most 1/8 of the width of the film. In this way, the change in the width of the film can be decreased, and a stress can be produced not only in the machine direction but also in the transverse direction. Therefore, the film can be biaxially stretched at the same time, the longitudinal tearability of the film can be improved, the volume change is remarkable in the direction of thickness due to restriction in the direction of width, and therefore it becomes possible to obtain a wide and super-thin film even at a low draw ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16392287A JPS649236A (en) | 1987-07-02 | 1987-07-02 | Production of piezoelectric film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16392287A JPS649236A (en) | 1987-07-02 | 1987-07-02 | Production of piezoelectric film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS649236A true JPS649236A (en) | 1989-01-12 |
Family
ID=15783371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16392287A Pending JPS649236A (en) | 1987-07-02 | 1987-07-02 | Production of piezoelectric film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS649236A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020085832A (en) * | 2001-05-07 | 2002-11-16 | 닛토덴코 가부시키가이샤 | Manufacturing method for oriented film, polarizing film, polarizing plate, and visual display device |
| JP2015006775A (en) * | 2013-06-26 | 2015-01-15 | 日東電工株式会社 | Manufacturing method of stretched film and manufacturing apparatus of the same |
-
1987
- 1987-07-02 JP JP16392287A patent/JPS649236A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020085832A (en) * | 2001-05-07 | 2002-11-16 | 닛토덴코 가부시키가이샤 | Manufacturing method for oriented film, polarizing film, polarizing plate, and visual display device |
| JP2015006775A (en) * | 2013-06-26 | 2015-01-15 | 日東電工株式会社 | Manufacturing method of stretched film and manufacturing apparatus of the same |
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