Methods and devices for stretching polymer films
US7104776B2 · kind B2 · utility
27Cited by
37References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2004 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Dec 13, 2024 |
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.