Extruder screw element
US10272608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2014 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Sep 29, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/67
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A screw element (100) for an extrusion machine is provided. The screw element (100) includes a first section (200) and a second section. The first section (200 has a first core (212) with a plurality of facets (214) connected to each other along splines (216). The facets (214) and splines (216) extend longitudinally along the screw element (100). The facets (214) and splines (216) can be helically-shaped. The first core (212) increases in diameter in a continuous manner along the direction of flow of material. The first and second sections (200, 300) include one or more helically-shaped flights (218,219) wrapped around the longitudinal axis of the screw element (100).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.