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1. (WO2010116529) TANK AND FABRICATION METHOD THEREOF

Pub. No.:    WO/2010/116529    International Application No.:    PCT/JP2009/057358
Publication Date: Fri Oct 15 01:59:59 CEST 2010 International Filing Date: Sat Apr 11 01:59:59 CEST 2009
IPC: F17C 1/06
Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA
トヨタ自動車株式会社
OTSUBO, Hirokazu
大坪 弘和
MIZUNO, Motohiro
水野 基弘
Inventors: OTSUBO, Hirokazu
大坪 弘和
MIZUNO, Motohiro
水野 基弘
Title: TANK AND FABRICATION METHOD THEREOF
Abstract:
The objective is to provide a tank and a fabrication method thereof that keep the physical constitution or mass of a tank from being increased by fiber layers, such as helical layers. To realize this, a tank (1) comprises a liner (20) and an FRP layer (21), which is made from hoop layers (70P) and helical layers (70H) that are formed by fiber bundles (70) being wrapped around the outer circumference of said liner (20). The percentage of the body part (1s) of the tank (1) covered by the fibers (70) of helical layers (70H) is made lower in the outer layers than in the inner layers of the FRP layer (21). It is preferable that the percentage of coverage by helical layers (70H) decreases continuously. Alternatively, it is preferable that the percentage of coverage by helical layers (70H) decreases in a stepwise fashion.