Yoshino Kogyosho Co., Ltd.

Hiroyuki Shima

Takumi Sugizaki

A decompression absorption bottle is formed of a synthetic resin material and has a cylindrical shape with a bottom. A bottom wall part of a bottom part includes a ground contact part; an upright peripheral wall part; and an annular movable wall part, the movable wall part is disposed to be freely rotatable in a vertical direction, the movable wall part is provided with an annular recess, and the annular recess is configured that an inner corner part having a V-shape or a U-shape protruding inward in the radial direction of the bottle when viewed from below, and an outer corner part having a V-shape or U-shape protruding outward in the radial direction of the bottle are alternately continued to each other in the circumferential direction of the bottle.

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Matsudo, Japan

Hiroyuki Shima