Process and apparatus for collecting waste plastics as separated
US5667151A · kind A · utility
22Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1996 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Apr 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S241/38
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for collecting waste plastics as separated comprises the steps of presorting out waste plastics from separated municipal refuse, crushing the waste plastics, reducing the volume of expanded polystyrene included in the waste plastics by heating the waste plastics at a predetermined temperature, finely dividing the waste plastics, washing the waste plastics to remove salt, etc. therefrom, separating the finely divided waste plastics in a liquid utilizing the difference between the plastics in specific gravity and collecting the separated fractions, and drying the useful one of the separated fractions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.