Co-extruded, biaxially oriented, matte HDPE films
US11712878B2 · kind B2 · utility
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23Claims
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Key dates
| Filing date | Mar 31, 2021 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Jun 30, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2553/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed are compositions and methods for multilayer films, which, in one embodiment may comprise a core layer comprising at least 50 wt. % of high-density polyethylene. Further, the multilayer film may include a first skin layer comprising at least 80 wt. % of high-density polyethylene, and a second skin layer comprising either: (i) one or more low-density polyethylenes; or (ii) one or more polypropylene-based copolymers. The multilayer film may be oriented in at least one direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.