| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a bottle made of a synthetic resin constructed such that without lowering the absorption amount of reduction in pressure by a reduction pressure absorption panel, even when the inside is changed from a pressurized state to a pressure reduced state, the reduction pressure absorption panel smoothly returns to a recessed state. <P>SOLUTION: A groove part 11 located inside the outer peripheral edge 10 of a reduction pressure absorption panel 9 is disposed. The end edge on the open side of the groove part 11 is formed at more inner side of a body part 4 than the outer peripheral edge 10 of the reduction pressure absorption panel 9. In the center of the groove part 11 in the longitudinal direction, a shallow bottom part 15 where the bottom part of the groove part 11 over a predetermined length range along the longitudinal direction is made shallow is disposed. A protruded part 16 protrudes from a part between the shallow bottom part 15 and the outer peripheral edge 10 of the reduction pressure absorption panel 9 to a height lower than the outer peripheral edge 10 to extend along the shallow bottom part 15. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
