The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2012
Filed:
Jun. 02, 2011
Poul Erik Braad, Birkerod, DK;
Inger Margrete Procida, Hellerup, DK;
Poul Erik Braad, Birkerod, DK;
Inger Margrete Procida, Hellerup, DK;
NKT Flexibles I/S, Brondby, DK;
Abstract
The present invention relates to a flexible unbonded pipe comprising an inner liner capable of forming a barrier against outflow of a fluid which is conveyed through the pipe, and one or more armouring layers on the outer side of the inner liner. The flexible unbonded pipe comprises at least one polymer layer and at least one film layer, the polymer layer being bonded to the film layer via one or more bondings selected from the group of chemical bondings and physical bondings. The film layer may preferably be a metal film layer. The polymer layer may preferably be cross-linked polyethylene. The interfacial bonding between the polymer layer and the film layer should preferably be sufficiently strong to prevent creation of gas pockets between the layers when subjected to an increased pressure of aggressive fluids on the film side of the pipe.