Multilayer co-extruded films and article containing same
US11707917B2 · kind B2 · utility
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70References
14Claims
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Key dates
| Filing date | Apr 16, 2020 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Aug 28, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2555/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Provided is a multilayer co-extruded film comprising at least two different elasticity layers with at least one first elasticity layer and at least one second elasticity layer having higher elasticity than the at least one first elasticity layer, wherein the first elasticity layer comprises a combination of an olefin-based elastomer and a crystalline olefin polymer, and wherein the residual strain after 100% elongation during 10 min at 23° C. of the multilayer co-extruded film is less than 15%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.