High strength flexible film package
US5846620A · kind A · utility
72Cited by
39References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Feb 6, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2826
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An article, such a bag, pouch, casing, or sheet formed from joined film pieces, comprises a non-crosslaminated film. The article has a parallel plate burst strength of at least 300 inches of water more preferably, from about 300 to 2000 inches of water. The film comprises one or more of a wide variety of polymers, with linear low density polyethylene being a preferred polymer. The film is heat scaled to itself or another film (preferably a similar or identical film). Preferably, the film has a total thickness of from about 3 to 20 mils. The burst strength is surprising in view of the fact that the film is not cross-laminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.