Solid state microcellular foaming method including continuous saturation of solid polymeric material
US10479003B2 · kind B2 · utility
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21References
20Claims
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Key dates
| Filing date | Aug 26, 2016 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Apr 3, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2300/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for saturating a thermoplastic polymer material includes continuously moving the polymer material through a pressurized pressure vessel. To do this, the method includes sealing the pressure vessel with a series of dynamic seals that allows the polymer material to continuously move through the pressure vessel while maintaining the pressure inside the pressure vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.