Methods and devices for stretching polymer films
US6949212B2 · kind B2 · utility
43Cited by
32References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2002 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Sep 24, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/041
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Stretched polymeric films can be used in a variety of applications, including optical applications. The stretching conditions and shape of the stretching tracks in a stretching apparatus can determine or influence film properties. Methods and stretching apparatuses can include adjustable or zone-defined stretching regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.