Flexible polyvinyl halide used for injection over-molding
US11441009B2 · kind B2 · utility
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38Claims
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Key dates
| Filing date | Dec 13, 2017 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Jun 10, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/005
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A polyvinyl halide compound, alone or alloyed with thermoplastic polyurethane, is used as a flexible layer for over-molding a rigid polymer substrate. Selection of types and amounts of calcium carbonate for the overmolding layer improves peel strength to achieve cohesive failure of the flexible overmolding layer rather than adhesive failure of the interface between the flexible overmolding layer and the rigid polymer substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.