| 摘要 |
PURPOSE:To stack containers without slippage even when the containers are of neck-in type whose mouths are smaller in diameter than barrels and attach an over-cap, which is inserted in the mouth of the container lightly when the container is in packaged state and deeply when it is in unpacked state, to the mouth of the container in packaging process without a mistake. CONSTITUTION:Even when the diameter of a mouth of a container A is smaller than that of a barrel, a recessed part 8 of an over-cap 1 is positioned above an upper connector 7 so that the container A can be fitted in the recessed part 8 of the over-cap 1. A downward protrusion 10 is provided near the circumference of the underside of the recessed part 8. In packaging process, when the lower part of the over-cap 1 on the tilt is hanged on the mouth of the container A, the protrusion 10 prevents the mouth of the container A from being fitted in the upper connector 7 of the over-cap 1, so that mis-attaching the over-cap 1 is prevented. |
