| 摘要 |
PURPOSE: To prevent an upper cap from slackening against the lower cap on setting it on a bottle. CONSTITUTION: In a plastic cap 11 in which an upper cap 12 detachably fitted to a lower cap 13 is provided and also a holding part 13b of a bottle, a closing part 13d, a notch 13c, a pulling lug 14, a female screw 12a of the upper cap 12, etc., are formed, a holding member 17 forming a clearance 16 between the endfaceof the opening side of the upper cap 12 and the upper face of the holding face of bottle in the lower cap 13, is provided at the inner peripheral part of the upper cap 12. |
