Method of manufacturing fiber-reinforced articles or plastics material
US4883550A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1988 |
| Grant date | Nov 28, 1989 |
| Priority date | — |
| Expiry date | Apr 26, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/246
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a fiber-reinforced shaped article of plastics material for pipeline systems. The article includes an inner casing of a thermoplastic material and an outer casing of a fiber winding impregnated with resin. The tape is wound onto the inner casing so that at least the entire surface thereof is covered. The article is then immersed in a resin bath while a negative pressure is maintained outside of and in the interior of the article. The resin bath is subsequently subjected to atmospheric pressure. The impregnated article is removed from the resin bath and the resin is hardened by ultraviolet light while the article is simultaneously rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.