Method for making tubular resin elements such as pipes
US4081302A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Jun 21, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C53/74
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a method and apparatus for making tubular fiber reinforced thermosetting resin elements having a thermoplastic lining. The technique involves application of a thermoplastic lining layer to an axially moving mandrel surface, application of at least one layer of fiber reinforced thermosetting resin material superimposed upon the lining layer, providing for bonding of thermosetting and thermoplastic layers to each other, and heating the thermosetting resin to effect solidification during axial advancement of the superimposed layers with the moving mandrel surface. Provision is also made for applying a thermoplastic jacket layer superimposed upon the thermosetting layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.