Process and device for sorting thermoplastic materials from a mixed flow
US5549250A · kind A · utility
Inventor
Key dates
| Filing date | Jan 20, 1995 |
| Grant date | Aug 27, 1996 |
| Priority date | — |
| Expiry date | Jan 20, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Process and apparatus for the storing of thermoplastic material from a mixed stream which can contain objects of other thermoplastic materials or other objects. The targeted thermoplastic material has a softening temperature which is below that of other materials in the mixed stream which is fed by a transport device through a heating unit which heats the mixed stream to the softening temperature. In the softened rubbery state of the thermoplastic material it tends to adhere to cutter blades which comminute the thermoplastic material preferentially while the remaining materials are rejected by the blades and remain uncomminuted to accomplish the sorting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.