Pultrusion apparatus including a molding die
US4988278A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1989 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Sep 22, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/526
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Pultrusion apparatus and tongue-in-groove die is provided for the fabrication of thermoplastic tape containing long fiber reinforcement. The tongue-in-groove die includes a first mold half having a groove and a pair of protruding wall portions which form sidewalls for the groove, and a second mold half having a tongue to match the groove. The second mold half is juxtaposed with respect to the first mold half so as to define a wedge-shaped passage between the tongue and the groove which has an inlet and an outlet and which converges from the inlet to the outlet. The tongue-in-groove die further includes a mechanism for adjusting the inlet and outlet clearances between the tongue and groove at the inlet and outlet respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.