| 摘要 |
<p>PROBLEM TO BE SOLVED: To simply and easily achieve the locking operation for holding the volume reducing posture of a bottle body by allowing the hook of the ring piece, which is provided on the neck part of the bottle body with respect to the hook piece formed to the bottom part of the bottle body, to function as the volume reducing posture holding force of the bottle body and to simply and certainly achieve the locking and holding of the volume reducing posture of the bottle body even if the volume reducing posture is distorted. SOLUTION: The ring piece 4 capable of being developed into a ring shape in a flat form is attached to the pinch-off part of one of the neck part 2 and shoulder part 3 of the bottle body and a hook piece 14 with which the ring piece 4 is hooked is provided to the pinch-off part of the bottom part 11 in height not protruding from a leg part 13 and a barrel part 7 is made thin-walled to a degree capable of easily crushing and deforming the barrel part 7 and the volume reducing posture of the barrel part is achieved only by the hooking of the freely bendable and deformable of the ring piece 4 with the hook piece 14, and the ring piece 4 and the hook piece 14 are molded by the mold clamping operation of the blow mold.</p> |
