Molding process for forming a tape of long reinforcement
US4900499A · kind A · utility
20Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Jan 14, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/526
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process of forming a tape of long reinforcement in a continuous thermoplastic matrix. A roving of long fibers carrying a thermoplastic resin is introduced into the inlet of a wedgeshaped passage between the tongue and the groove of a tongue-in-groove die. The fibers are bounded by sidewalls for the entire length of the die. Both heat and pressure is applied to consolidate the resin in the fibers while the pressure is adjusted on the rovings by adjusting the inlet and the outlet clearances while the roving is being pulled through the die.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.