Spiral wound tubes, method and apparatus for forming the same

Details Spiral wound tubes, method and apparatus for forming the same Spiral wound tubes, method and apparatus for forming the same

B - Operations, Transporting

31

C

B31C 3/00 (2006.01)

Patent

CA 2562794

Spiral wound tubes (20) may be formed utilizing the method and apparatuses (100) described herein. The method includes providing a mandrel (110) and a web material (10) having a first overlap region (14) and a second overlap region (18). A binding agent (30) is applied to at least one of the overlap regions. The mandrel (110) is wrapped with the web material (10) such that the second overlap region (18) covers the first overlap region (14) of the previously wound web and the binding agent (30) is disposed between the previously wound first overlap region and the currently wound second overlap region. The spiral wound tubes (20) of the invention demonstrate improved axial crush resistance.

Des tubes enroulés en spirale (20) peuvent être formés en utilisant le procédé et les appareils (100) ci-décrits. La méthode comprend l'utilisation d'un mandrin (110) et d'un matériau en toile (10) présentant une première zone de chevauchement (14) et une deuxième zone de chevauchement (18). Un agent de collage (30) est appliqué à au moins une des zones de chevauchement. Le mandrin (110) est enveloppé avec le matériau en toile (10) de telle sorte que la deuxième zone de chevauchement (18) recouvre la première zone de chevauchement (14) de la toile précédemment enroulée et l'agent de collage (30) est disposé entre la première zone de chevauchement précédemment enroulée et la deuxième zone de chevauchement actuellement enroulée. Les tubes enroulés en spirale (20) selon l'invention montrent une résistance améliorée au flambage.

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