Barrier film
US12036775B2 · kind B2 · utility
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23Claims
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Key dates
| Filing date | Sep 12, 2019 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | Dec 7, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2553/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multi-layer polymeric film substrate comprising at least a core layer and a coextruded oxygen barrier layer wherein the film exhibits an oxygen transmission rate (OTR) when measured in accordance with ASTM F1927-14 of below 200 cc/m2/24 hr at a relative humidity (RH) of 85% and/or of below 600 cc/m2/24 hr at a relative humidity (RH) of 90%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.