Shrink films comprising a cyclic-olefin copolymer core
US11141961B2 · kind B2 · utility
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32Claims
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Key dates
| Filing date | Apr 27, 2018 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Apr 27, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/062
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multi-layered polyethylene film suitable for shrink applications including at least a core layer and at least one other layer adjacent thereto, the core layer including within a range from 5 wt % to 50 wt % of a cyclic olefin copolymer based on the weight of the core layer, and within a range from 50 wt % to 95 wt % of a polyethylene based on the weight of the core layer, wherein the cyclic olefin copolymer has a glass transition temperature (Tg) of at least 70° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.