Bags made from ethylene copolymer films, and films and uses of such copolymers for making such bags
US7560149B2 · kind B2 · utility
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1References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 29, 2004 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Feb 13, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1397
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to bags with a heat seal zone formed by a composition comprising an interpolymer of ethylene and an alpha-olefin having an MI of from 1.5 to 4.5 g/10 min, preferably from 1.7 to 3.5 g/10 min, and especially from 1.8 to 2.5 g/ 10 min, and a density of from 0.88 to 0.94 g/cm3, preferably from 0.91 to 0.93 g/cm3 and especially from 0.912 to 0.922 g/cm3,and a CDBI of at least 50%, preferably at least 55% and especially at least 60%, and less than 20 wt % of LDPL; and to uses of films for making such bags.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.