Method and apparatus for separating and classifying scrap plastic materials
US5255859A · kind A · utility
31Cited by
17References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1990 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Sep 4, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S241/38
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Classifying and processing post-consumer plastic scrap materials for subsequent utilization. Post-consumer plastic scrap of various kinds, such as colored HDPE, natural HDPE, green PET and clear PET are separating into constituent fractions, and each fraction is separately reduced to flakes. At least some of the fractions are separately washed to remove fragments of labels or other foreign matter previously in place on the plastic bottles or other containers making up those scrap constituents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.