Title:
TECHNIQUES FOR COATING PIPES
Document Type and Number:
WIPO Patent Application WO/2015/063496
Kind Code:
A3
Abstract:
A field joint of a pipeline is coated in a thermoplastics injection moulding process by positioning a mould tool (32) around the field joint to define a mould cavity. Thermoplastics material is injected into the mould cavity to form a field joint coating that will set in the mould cavity (40). As the thermoplastics material shrinks in the mould cavity (40) while the field joint coating sets, compacting pressure is applied radially inwardly within the mould cavity (40) against a radially outer side of the field joint coating (38). A compacting fluid introduced into the mould cavity (40) between the mould tool (32) and the field joint coating (38) may be used to apply pressure against the field joint coating (38). This accelerates and controls cooling of the field joint (38) coating while maximising quality.
Inventors:
HOFFMANN PHILIPPE BENOIT JACQUES (GB)
GORDON MIKE (GB)
MONFORT-MOROS NICOLAS (GB)
POPINEAU SYLVAIN (GB)
GORDON MIKE (GB)
MONFORT-MOROS NICOLAS (GB)
POPINEAU SYLVAIN (GB)
Application Number:
PCT/GB2014/053235
Publication Date:
July 16, 2015
Filing Date:
October 30, 2014
Export Citation:
Assignee:
SUBSEA 7 LTD (GB)
International Classes:
F16L58/18; B29C45/14; B29C45/17; B29C45/72; F16L1/20; F16L59/20
Domestic Patent References:
| WO2012004665A2 | 2012-01-12 | |||
| WO2001036173A1 | 2001-05-25 |
Foreign References:
| DE19950261A1 | 2001-04-19 |
Other References:
ECKARDT H: "TECHNIQUES FOR GAS-ASSIST INJECTION MOLDING", GAS ASSIST INJECTION MOLDING, XX, XX, 1 January 2001 (2001-01-01), pages 30 - 59, XP009033575
Attorney, Agent or Firm:
CUMMINGS, Sean et al. (No.1 London Bridge, London SE1 9BA, GB)
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