Extrusion apparatus
US4859069A · kind A · utility
Inventor
Key dates
| Filing date | May 12, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | May 12, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The apparatus is for the straining and processing of plastic and rubber like materials and has a rotor rotatably mounted in the bore of a cylindrical barrel and operable to move process material, from one end of the bore to the other, to progressively heat, develop pressure, transport and separate the fine and fluent from the oversize and less fluent process material and to discharge the separated materials from different ports. Means, structurally integral with the rotor and barrel bore, are provided for various functions for operably developing heat, pressure and transporting said process material with minimum twining of the process material flow lines; for continuously leading off the fine and fluent process material, from each side of multiple circumferential rotor extrusion grooves into restrictive actuated circumferential openings, as formed between the barrel bore and tooth tops of the circumferential rotor extrusion grooves, longitudinally from the openings, along the tooth tops to a centrally located tooth top extrusion groove, which intercepts all of the fine and fluent process material and conveys it to ports communicating, from the tooth top extruder groove to the inter…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.