Injection molding unit for long fiber-reinforced thermoplastic resin
US5773042A · kind A · utility
21Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1995 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Oct 10, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/0005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An injection molding process for forming high strength, long fiber-reinforced thermoplastic resin, and for holding damage to the pellet-shaped thermoplastic resin to a minimum even when being plasticized, and maintaining the fiber length of pellet-shaped fiber bundles while unwinding the fibers and melting the resin. After the long fiber-reinforced thermoplastic resin has been heated and melted, pressure is applied to unwind the long fiber-reinforced thermoplastic resin while melted, and injection molding then performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.