Method of producing a composite pipe and such a composite pipe
US10428979B2 · kind B2 · utility
0Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2015 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Mar 4, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composite pipe comprises a polyetheretherketone innermost pipe around which a reinforcing overwrap is arranged. A protective sheath surrounds the overwrap. Such a composite pipe may be made by selecting a polyetheretherketone pipe having an outer region having a crystallinity of less than 25%; overlaying the selected pipe with overwrap; and subjecting the combination to heat, thereby causing the crystallinity of the outer region of the polyetheretherketone pipe to increase. The method reduces the risk of pipe failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.