Process for producing composite plastic pipe
US4515737A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1983 |
| Grant date | May 7, 1985 |
| Priority date | — |
| Expiry date | Nov 23, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/153
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing a composite plastic pipe, which comprises producing a thermoplastic resin pipe (I) by an extruder, covering the surface of the pipe (I) uniformly with a continuous fibrous reinforcing material (II) impregnated with a thermosetting resin in its axial direction by a draw molding method, helically winding a continuous fibrous reinforcing material (III) impregnated or not impregnated with a thermosetting resin uniformly on the layer of the resin fibrous reinforcing material (II) by a filament winding method, thereafter curing the thermosetting resin by irradiation of ultraviolet light and coating a thermoplastic resin (IV) on the resulting product within a crosshead die in an extruder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.