Biaxially-oriented polyethylene multilayer film with a matte surface
US11376830B2 · kind B2 · utility
1Cited by
10References
18Claims
0Family size
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Key dates
| Filing date | May 17, 2019 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | May 17, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2439/70
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A biaxially-oriented polyethylene (BOPE) multilayer film comprises a skin layer with a matte surface and a core, the skin layer with a matte surface comprising, in weight percent (wt %) based upon the weight of the skin layer: (1) from 20 to 80 wt % of an ethylene-based polymer, and (2) from 80 to 20 wt % of a propylene-based polymer; each of the ethylene-based polymer and the propylene-based polymer having a storage modulus, with a difference between the storage modulus of the ethylene-based polymer and the propylene-based polymer of greater than 40 megaPascals (MPa) at 110° C., and greater than 18 MPa at 120° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.