Microgrooved processing roll and method for heat treating sheet film using same
US4428724A · kind A · utility
8Cited by
17References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1981 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | Sep 29, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/902
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Sheets of organic thermoplastic polymeric film are contacted with processing rolls having a microgrooved surface to reduce the air layer therebetween, thereby aiding heat transfer between film and roll and consequently increasing processing speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.