Hybrid disk-cone extrusion die module having a spillover surface surrounding a planar seal surface
US6638464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Jul 27, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/3363
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention discloses an extrusion die module having a flat compression seal surrounded by a conical or otherwise angled spillover surface. The die module promotes a flat surface to flat surface compression seal outside of the flow distribution channels and promotes better streamlined flow and material combination than a traditional flat disk die module. The die module promotes a reduced overall diameter and wetted diameter in comparison to standard flat disk dies. In addition, the present invention relates to an extrusion die module having a spillover surface surrounding a planar sealing surface. Further, the present invention relates to a method for utilizing an extrusion die module with a conical or otherwise angled spillover surface to minimize the die surface area wetted by an intermediate layer in a multi-layer coextrusion process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.