Controlled-puncture films
US6869666B2 · kind B2 · utility
16Cited by
67References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2001 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Feb 3, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention discloses methods of controlling the puncturability, and optionally the sealability (the ability of a film to conform around a puncturing object) and resealability (the ability of a film to close a hole made by a puncturing object), of polymeric films. Systems comprising a film and puncturing object are also disclosed. Puncturability is controlled by achieving targeted levels of the friction between the film and a puncturing object, the film's flexural rigidity, the film's recovering stress, and the film's elongation at break.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.