Method and apparatus for using recycled plastic material, and a plastic product made by an extruder
US6638589B1 · kind B1 · utility
18Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1997 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Dec 1, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method and apparatus for using recycled plastic material, and to a plastic product produced by an extruder. In the invention, crosslinked polyethylene is ground to powder form and mixed with e.g. polyethylene so that the proportion of the crosslinked polyethylene in the mixture is less than 30%. The mixture is supplied through an extruder (2) for making an extruded plastic product. In this way, crosslinked polyethylene can be recycled in a cost-effective and simple manner, while producing a plastic product that contains recycled crosslinked polyethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.