Extrusion apparatus for making multilayer articles
US8231374B2 · kind B2 · utility
0Cited by
128References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2010 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Aug 7, 2030 |
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.