| 摘要 |
PROBLEM TO BE SOLVED: To prevent a lower inner lid from being supplied together with an upper inner lid when the upper inner lid is supplied to a container by weakening a degree of close fitness of the overlapped inner lids. SOLUTION: A side part 11b of an inner lid 11 is formed with ribs 11e (protrusions). When the inner lids 11 are overlapped from each other, ribs 11e are present between a side part outer surface of the upper inner lid 11 and a side part inner surface of the lower inner lid 11 to enable a surplus clearance to be formed between the lids. Thus, a degree of close fitness between the upper inner lid 11 and the lower inner lid 11 can be decreased, so that the lower inner lid 11 is prevented from being sucked against the upper inner lid 11 and only the upper inner lid 11 can be supplied to the container. |
