Method and device for extrusion of hollow pellets
US8834760B2 · kind B2 · utility
1Cited by
26References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2009 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Sep 2, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/251
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Described herein are extrusion processes to produce hollow pellets. Also disclosed are pelletizer devices that can be used to produce the hollow pellets. The processes and devices make use of an extrusion die having a die orifice and an insert that is placed in the die orifice to produce the hollow pellets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.