EVOH-coated, biaxially oriented, high-density, polyethylene films with metal-oxide deposition
US11135820B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2021 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Apr 29, 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 include a core layer comprising a polyethylene stabilizer optionally in a masterbatch solution and at least 50 wt. % of high-density polyethylene. Further, the multilayer film may include a first skin layer comprising at least 90 wt. % ethylene-propylene polymer and antiblock, and a second skin layer consisting of an ethylene-propylene copolymer or terpolymer. Further still, the multilayer film may include a primer layer on the second skin, an aqueous barrier layer of ethylene vinyl alcohol polymer, polyvinyl alcohol polymer, or combinations thereof on the primer layer. And, further still, multilayer film may include a metallization layer on the aqueous barrier layer, wherein the multilayer film may be oriented in at least one direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.