| 摘要 |
PROBLEM TO BE SOLVED: To make a synthetic resin lid body usable in common with synthetic resin vessel bodies in several kinds which are different in size at the circular bottom part, and to make such vessel bodies accommodative for stable stacking up in multiple tiers. SOLUTION: The structure is constructed of a synthetic resin vessel body 1 and a synthetic resin lid body 2, and while a plurality of projected parts are formed at the synthetic resin lid body 2 with their outside ends extending from the center to the midway point of the lid body, the synthetic resin lid body 2 is put on the synthetic resin vessel body, and the vessel bodies are stacked up in multiple tiers. At this time, a circular rib is formed at a circular bottom of the synthetic resin vessel body 1 so that the circular rib becomes larger than the outside end of the projected parts of the synthetic resin lid body 2 placed at the lower side. |
