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1. (WO2017185143) FLEXIBLE TUBULAR STRUCTURE

Pub. No.:    WO/2017/185143    International Application No.:    PCT/AU2017/050394
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Sat Apr 29 01:59:59 CEST 2017
IPC: F16L 9/14
B29C 47/06
B29D 23/00
B32B 1/08
B32B 7/04
Applicants: LONG PIPES LIMITED
Inventors: GRAHAM, Arthur Derrick Bray
GRAHAM, Neil Deryck Bray
Title: FLEXIBLE TUBULAR STRUCTURE
Abstract:
A tube (10) and a method of constructing such a tube, the tube (10) being in the form of a composite film structure comprising a co-extrusion of a plurality of layers bonded together to provide an integrated structure. The layers comprise an inner layer (11), an intermediate layer (12) and outer layer (13). The intermediate layer (12) is of a material compatible with two adjacent layers (11, 13) between which it is interposed, wherein the intermediate layer (12) provides a bridge between the two layers (11, 13) to provide the tube (10) as an integrated structure. The exterior surface (15) of the tube (10) is optionally treated or modified or is provided with a coating, typically for bonding with another substance such as a resinous binder. A hollow structure in the form of a tubular element configured as a pipe and constructed using the tube (10) is also disclosed.