Patent Number: 6,165,586

Title: Flat strip, in particular for the reinforcing ducts, method for making same, and ducts reinforced therewith

Abstract: A flat strip (1) including at least one layer (2) of longitudinal filamentary rovings (3), and means for assembling said filamentary rovings. The assembly means comprise a bonding material (5) and retaining means (4) surrounding and clamping said layer (2). The longitudinal filamentary rovings (3) are agglomerated into a relatively flat strand with a substantially rectangular cross-section, and each filamentary roving (3) has a predetermined average compactness of at least 60%. The retaining means (4) consist of a flat tubular sheath including elements (7) extending transversely to the longitudinal direction of said filamentary rovings (3). Said strip is particularly useful for reinforcing ducts used in the oil industry.

Inventors: Nouveau; Joel Le (Yainville, FR), Do; Anh Tuan (Cormeilles en Parisis, FR)

Assignee: Coflexip

International Classification: B29C 70/04 (20060101); B29C 70/54 (20060101); B29C 70/10 (20060101); B29C 70/20 (20060101); B29C 70/22 (20060101); D07B 1/22 (20060101); D07B 1/00 (20060101); F16L 11/08 (20060101); B29C 070/22 (); B32B 005/12 ()

Expiration Date: 12/26/2017