| 摘要 |
PROBLEM TO BE SOLVED: To prevent displacements of stacked packaging containers from one another, the displacement of a wrapper, and mutual blocking of lid bodies. SOLUTION: Four hollow protrusions 16, which protrude above a protruding ring 13 formed in an outer-periphery part, are formed near four corner parts in a top face 15 of the lid body 11 surrounded by the protruding ring 13. A recess 17 recessed inside an upper part of the protrusion 16 is formed in the upper part of the protrusion 16. Accordingly, when the lid bodies 11 are superposed, a top face 16A of an end of the protrusion 16 of the lower lid body 11, which is inserted into the protrusion 16 of the upper lid body 11, is brought into contact with a bottom face 17A of the recess 17 of the upper lid body 11, in order to prevent further insertion. |
