Cast film cooling device
US6619941B1 · kind B1 · utility
2Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2000 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Apr 28, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/917
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved air cooling device for the production of cast film is shown. The device is intended to increase production rates for film without reducing the level of film gauge control. The devices utilizes a soft box for the bulk of the cooling and a directional source of pressurized air to deflect exhaust air from the soft box from striking the web curtain between the die and chill roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.