Deep drawn microcellularly foamed polymeric containers made via solid-state gas impregnation thermoforming
US9296126B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 2010 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Mar 9, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2201/032
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a deep draw microcellularly foamed polymeric container comprising a polymeric sidewall integrally connected to a polymeric base along a bottom edge. The polymeric sidewall and base are contiguous with each other and define a shape of an open top container. The polymeric sidewall and base have a contiguous inner microcellular foam structure (having average cell diameters ranging from about 5 to about 100 microns) surrounded by a smooth outer skin layer integrally connected therewith. The polymeric sidewall defines a container height and a top opening, wherein the top opening defines a top opening width, and wherein the polymeric base defines a container base width, and wherein the area defined by the top opening is greater than the area defined by the polymeric base, and wherein the ratio of the container height (h) to the top opening width (w) is greater than about 1:1 (h:w).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.