Process and apparatus for continuous crystallization of plastic granules
US5558678A · kind A · utility
20Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1995 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Jun 27, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2067/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process and an apparatus for the continuous crystallization of plastic granules, particularly amorphous plastic granules, in which the granules are introduced into a container and form a granule bed, which is moved downwards by the action of gravity. A hot gas is passed as a primary gas in a countercurrent manner through the granule bed. The granules are kept moving by a stirrer. There is also a gas supply for a secondary gas, which introduces the secondary gas at high speed at several points distributed over the cross-section of the container into the upper area of the granule bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.