Extrusion apparatus for making multilayer articles
US7713047B2 · kind B2 · utility
1Cited by
129References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2008 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Feb 15, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In certain aspects of the invention, an extrusion apparatus for making a multilayer article includes multiple discs, each of which has at least one passageway configured to permit fluid flow therethrough in a flow direction. At least one of the discs includes a cone shaped portion extending substantially parallel to the flow direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.