Apparatus for compounding a fiber reinforced thermoplastic material and forming parts therefrom
US5401154A · kind A · utility
60Cited by
24References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 26, 1993 |
| Grant date | Mar 28, 1995 |
| Priority date | — |
| Expiry date | May 26, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A twin screw extruder compounds a thermoplastic resin material with a randomly oriented fiber reinforcing material to produce a molten fiber reinforced thermoplastic extrusion from a die. The extrusion is cut into preforms which are immediately inserted into a compression mold for making parts. A unidirectionally oriented fiber reinforcing material can be added in the die. The fibers are monofilaments which are debundled and heated before entering either the extruder or the die.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.