Title:
内径剛性を向上した螺旋巻きチューブ、およびその製造方法
Document Type and Number:
Japanese Patent JP2006514585
Kind Code:
A
Abstract:
Wide ply gaps are intentionally introduced into one or more plies in a radially intermediate zone of the wall of a spirally wound tube. Each ply having wide ply gaps is narrower than the width that would ordinarily be employed at a given spiral winding angle to achieve a butt joint between adjacent edges of consecutive turns of the ply, and the ply is wound at that given spiral winding angle in such a manner that gaps are defined between the adjacent edges of the consecutive turns of the ply. The wide ply gaps have the effect of increasing the compliance of the intermediate zone of the tube wall in the radial direction. Such increased radial compliance has been found to improve the ID stiffness of the tube relative to a tube constructed of the same materials but having no ply gaps in the intermediate zone.
Inventors:
Kiu, Yampin
Van de Kamp, Johannes W.
Mark Peas, Burns
Niu, Xiao Kai
Vellum,cliffe ai
Van de Kamp, Johannes W.
Mark Peas, Burns
Niu, Xiao Kai
Vellum,cliffe ai
Application Number:
JP2004567976A
Publication Date:
May 11, 2006
Filing Date:
March 21, 2003
Export Citation:
Assignee:
Sonoko Development, Inc.
International Classes:
B31C3/00; B29D23/00; B32B1/08; B65H75/10
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Arihara Koichi
Matsushima Tetsuo