Apparatus and method for preparing a plasticated material
US4049245A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1975 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Jul 7, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and method for preparing a plasticated material from solids introduced into the apparatus, the apparatus including a barrel having a screw conveyor defining a channel for conveying the material in a downstream direction as the material is melted, the channel including a solids conveying zone and a melting zone downstream from the solids conveying zone, the apparatus and the method including, respectively, means and the step of providing an abrupt change in the volume of the channel at a specified location between the solids conveying zone and the melting zone for inducing the formation of a melt pool in the channel at that location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.