Method for forming discrete pellets from viscous materials
US6168733A · kind A · utility
6Cited by
19References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1999 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | Aug 24, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29B9/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for making pellets from a viscous material includes the steps of extruding the viscous material from a first conduit into a pelletizing fluid in a first zone; and passing the extruded viscous material and pelletizing fluid into a second zone having an increase in the velocity of the pelletizing fluid and a step-wise reduction in the pressure relative to the first zone. Advantageously, this step change combination produces sufficient forces by the pelleting fluid on the viscous material sufficiently to form discrete pellets of a substantially uniform size distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.