| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an improved container capable of adjusting a pressure of vacuum generated through hot-pack filling operation, imitating an outer appearance of a glass container having a side wall not having any substantial structure and showing a smooth glass-like outer appearance. <P>SOLUTION: There is provided a plastic container having a bottom part 20 that is adapted for absorption of vacuum pressure. Its bottom part is provided with a contact ring 34 for use in supporting the container at its surface, an upright wall 44 and a central part 36. The upright wall is adjacent to the contact ring and substantially encloses the contact ring. The central part is at least partially formed by a central raised bottom part 40 and a reversing ring 42 substantially enclosing the central raised bottom part. The central raised bottom part and the reversing ring can be moved so as to adjust a force of pressure generated in the container. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
