Extruded polymer foam process with staged forming
US8476327B2 · kind B2 · utility
0Cited by
7References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 24, 2010 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Jul 4, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0097
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Prepare an extruded polymeric foam by extruding a foamable polymer composition through a foaming die and allowing the foamable polymer composition to expand into a polymer foam as it travels through and is constrained in its thickness dimension by at least two constraining sections, the first having opposing essentially parallel forming plates and the second constraining section having forming plates spaced further apart than the first constraining section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.