Cutting device for purging an extruder
US6589040B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Apr 25, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/116
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A device for purging a high-output polymer extruder includes a purge valve for discharging a molten polymer from the extruder. A cutting device is arranged at the output of this purge valve so as to be able to cut a continuous stream of polymer at the output of the purge valve into blocks. A conveying device, preferably hydraulic, is arranged at the output of the cutting device, so as to transport the blocks in a flow of liquid and convey them away from the discharge zone of the purge valve. The hydraulic conveying device preferably includes a chute equipped with a liquid-injection device, and a channel equipped with a device for creating a strong flow of liquid in the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.