| 摘要 |
PURPOSE:To easily attach and detach an outer container without being restrained in the shape of an inner container body. CONSTITUTION:An inner container body 10 is inserted from an open bottom of an outer container 20 and rotated relative to the outer container 20, whereby a rib 12c provided projecting outwardly from a filling opening 12 of the inner container body 10 is engaged with a supporting stepped part 24 provided on the inner peripheral surface of a mouth edge 23 at the top of the outer container 20. In this way the inner container body 10 is retained within the outer container 20. A shoulder ring 30 engaged with the outer container 20 is then forced downward to position a projecting part 35 provided on the outer peripheral surface of the shoulder ring 30 below a stepped part 25 in a recess part 27 of the outer peripheral surface of the outer container 20. In doing so, the projecting pieces 33 on the shoulder ring 30 keep the rib 12c from detaching from above the supporting stepped part 24 to restrain the inner container body 10 from rotating movement relative to the outer container 20. |
