JPS5658830A - Controlling method of film thickness in calender rolling - Google Patents
Controlling method of film thickness in calender rollingInfo
- Publication number
- JPS5658830A JPS5658830A JP13499679A JP13499679A JPS5658830A JP S5658830 A JPS5658830 A JP S5658830A JP 13499679 A JP13499679 A JP 13499679A JP 13499679 A JP13499679 A JP 13499679A JP S5658830 A JPS5658830 A JP S5658830A
- Authority
- JP
- Japan
- Prior art keywords
- profiles
- rolls
- eccentric
- measured
- film
- 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
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE: To equalize a film thickness by a method wherein each ecentric profile of a pair of final rolls is measured and the variation of a roll gap is calculated based on the profiles and a film withdrawing speed is adjusted by the calculated value.
CONSTITUTION: In subjecting a thermoplastic resin film to the calender rolling, eccentric profiles of a pair of final rolls 1, 2 is measured by a differential transformer type displacement measuring instrument to obtain eccentric profiles a, b. Moreover, by an eccentric peak detecting sensor generating a pulse when an eccentric curve of the rolls 1, 2 is reached to a max, value, a pulse time τ generated according to the rotation of the rolls 1, 2 is measured. Then a peripheral speed of the rolls 1, 2 and the pulse time τ are applied to a function generator to generate profiles a', b' similar to aforementioned profiles a, b and the profiles a', b' are synthesized to calculate the gap variation of the rolls 1, 2 and a film withdrawing speed is adjusted based on the calculated value.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13499679A JPS5658830A (en) | 1979-10-19 | 1979-10-19 | Controlling method of film thickness in calender rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13499679A JPS5658830A (en) | 1979-10-19 | 1979-10-19 | Controlling method of film thickness in calender rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5658830A true JPS5658830A (en) | 1981-05-22 |
Family
ID=15141493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13499679A Pending JPS5658830A (en) | 1979-10-19 | 1979-10-19 | Controlling method of film thickness in calender rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5658830A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5916724A (en) * | 1982-07-21 | 1984-01-27 | Ishikawajima Harima Heavy Ind Co Ltd | Controlling method of sheet thickness in calendering process |
| JPS60172513A (en) * | 1984-02-20 | 1985-09-06 | Ishikawajima Harima Heavy Ind Co Ltd | Control of sheet thickness for calender molding |
| JP2007055037A (en) * | 2005-08-23 | 2007-03-08 | Toshiba Mach Co Ltd | Sheet shaping apparatus and its control method |
| JP2007055036A (en) * | 2005-08-23 | 2007-03-08 | Toshiba Mach Co Ltd | Sheet molding apparatus and roll gap control method |
-
1979
- 1979-10-19 JP JP13499679A patent/JPS5658830A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5916724A (en) * | 1982-07-21 | 1984-01-27 | Ishikawajima Harima Heavy Ind Co Ltd | Controlling method of sheet thickness in calendering process |
| JPS60172513A (en) * | 1984-02-20 | 1985-09-06 | Ishikawajima Harima Heavy Ind Co Ltd | Control of sheet thickness for calender molding |
| JPH029925B2 (en) * | 1984-02-20 | 1990-03-06 | Ishikawajima Harima Heavy Ind | |
| JP2007055037A (en) * | 2005-08-23 | 2007-03-08 | Toshiba Mach Co Ltd | Sheet shaping apparatus and its control method |
| JP2007055036A (en) * | 2005-08-23 | 2007-03-08 | Toshiba Mach Co Ltd | Sheet molding apparatus and roll gap control method |
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