Multi-layer opaque films, articles including such films, and uses thereof
US8815377B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Nov 24, 2010 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jan 1, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24992
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multi-layer film including a cavitated core layer, two skin layers and at least one tie layer between the core layer and one of the skin layers, said tie layer including from about 1 to about 25 wt % of a soft polymer having a density in the range of 0.850 g/cm3 to 0.920 g/cm3 and a Differential Scanning Calorimetry (DSC) melting point in the range of 40° C. to 125° C., said multi-layer film having a density between 0.50 to 0.85 g/cm3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.