FUEL TANK AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a fuel tank 10 having a noise eliminating function for reducing the noises of a fluctuant fuel, simply constructed in the step of manufacturing processes while securing a large tank capacity. SOLUTION: Noise eliminating protrusions are formed on the inner wall of a tank body 12 of the fuel tank. The noise eliminating protrusions 16 are formed during the delivery of a parison PS for eliminating the noises of the fluctuant fuel.