Multi-layer films having improved sealing properties
US7537829B2 · kind B2 · utility
8Cited by
35References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2005 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Jun 7, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Multi-layer films that are suitable for packaging and having improved sealing properties are disclosed. Some embodiments may also provide a lower minimum sealing temperature. A soft polymer is blended in a core layer and a tie layer comprising the soft polymer and, optionally, another polymer. A sealable layer is provided on the side of the tie layer opposite the core layer. The multi-layer films may be transparent, contain a cavitating agent, or are pigmented to form an opaque film. Also, the multi-layer film may be metallized or coated with a barrier coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.