Coextruded multilayer film with propylene-based polymer and ethylene-based polymer
US10336041B2 · kind B2 · utility
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10References
16Claims
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Key dates
| Filing date | Jun 25, 2014 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | May 11, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2439/70
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present disclosure provides a coextruded multilayer films. In one embodiment, the coextruded multilayer film includes a core component having from 15 to 1000 alternating layers of layer A and layer B. Layer A has a thickness from 30 nm to 1000 nni and layer A includes a propylene-based polymer having a crystallization temperature (Tpc). Layer B includes an ethylene-based polymer having a crystallization temperature (TEc), wherein Tpc<TEc. Layer A has an effective moisture permeability less than 0.40 g-mil/100 in2/day.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.