Manufacture of fully recyclable foamed polymer from recycled material
US7585439B2 · kind B2 · utility
12Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2004 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | May 14, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A solid state foaming process permits the use of up to 100% recycled pre- and post-consumer polymer for the manufacture of foamed polymer material and thermoformed foamed polymer articles. The process enables the optional formation of integral unfoamed skins of controllable depth and crystallinity on foamed polymeric materials suitable for a wide variety of applications. Because this process does not alter the underlying chemistry of the material all scrap from the manufacturing process may be reused without additive to form new foamed polymeric materials and articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.