Device for extruding and smoothing plastic films
US5542836A · kind A · utility
7Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1995 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Feb 2, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic film is formed by passing a web of extruded thermoplastic material through a slit formed between a pair of smoothing rolls. One of the rolls is biased toward the other roll by a yieldable biasing mechanism to accommodate variations in thickness of the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.