Die for manufacturing co-extruded structural shapes
US5364254A · kind A · utility
3Cited by
12References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 28, 1994 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Feb 28, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/26
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A die for co-extruding structural shapes is provided with a central cylindrical duct through which the molten polymeric material destined to constitute the central core of the structural shape flows, and a conical gap, coaxial with the central duct, into which the polymeric coating material is fed which will constitute the outer skin of the structural shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.