Easy opening hermetically sealed film
US6248442A · kind A · utility
52Cited by
14References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1998 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Dec 31, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to multilayer film which is heat sealable over a broad temperature range. It is desirable to have a broad sealing temperature range to increase the production of packaging machines. The present invention also relates to multilayer film which provides easy opening and hermetic seals to packages. The film is made up of a core layer comprising linear low density polyethylene (LLDPE) and at least one skin layer having a melting point of at least 10.degree. C. below the core layer melting point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.