Title:
COMPOSITE PIPE AND PRODUCTION METHOD FOR COMPOSITE PIPE
Document Type and Number:
WIPO Patent Application WO/2019/117219
Kind Code:
A1
Abstract:
A composite pipe having: a tubular pipe body; a coating layer that is tubular, covers the outer circumference of the pipe body, comprises a resin material, and has ring-shaped mountain sections protruding towards the outside in the radial direction and ring-shaped valley sections that are recessed on the outside in the radial direction, said mountain and valley sections being formed alternately in the axial direction of the pipe body and forming a bellows shape; and intermediate layers that are formed in a tubular shape in a state in which both end surfaces thereof abut in the width direction of a band-shaped porous resin sheet, are arranged between the pipe body and the coating layer, are interposed between the valley sections and the pipe body, and have the abutted position of both end surfaces and the parting line of the coating layer arranged at different positions in the circumferential direction of the pipe body.
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Inventors:
MITSUHASHI KOHEI (JP)
Application Number:
PCT/JP2018/045766
Publication Date:
June 20, 2019
Filing Date:
December 12, 2018
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
F16L11/115; B29C48/34; B29C69/00; B32B1/08
Domestic Patent References:
| WO2004039574A2 | 2004-05-13 | |||
| WO2017213007A1 | 2017-12-14 |
Foreign References:
| JP2002039446A | 2002-02-06 | |||
| JPH11503217A | 1999-03-23 | |||
| JPH06143527A | 1994-05-24 | |||
| JP2017013498A | 2017-01-19 | |||
| DE4128654A1 | 1993-03-04 | |||
| JPH08300467A | 1996-11-19 | |||
| JPH08156088A | 1996-06-18 | |||
| JPS6246079A | 1987-02-27 | |||
| JP2013231490A | 2013-11-14 | |||
| JP2004322583A | 2004-11-18 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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