Method and apparatus for producing foamed products from a mix of reclaimed plastic foam material and foamable virgin plastic resin
US4448737A · kind A · utility
18Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1982 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Dec 30, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/15
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A system and a method for the production of thermoformable plastic foam material from a mix of plastic foam selvage and a foamable virgin plastic resin. Accordingly, the present invention provides for a selvage formed during the production of thermoformed foam material articles from a plastic foam sheet stock is recycled and admixed with the virgin foamable plastic resin, in that the material components are admixed in a feed hopper and then conducted from the feed hopper into a twin-screw compressor which will impart a positive forward feed to the compressible plastic materials conveyed therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.