| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-piece cap not generating the defective capping when an inner stopper is capped on a neck section of a bottle even when the inner stopper in the tilted state is inserted into a cap main body. SOLUTION: The two-piece cap 10 is screwed and fitted on the bottle neck section 21 and formed of the cap main body 100 and the inner stopper 200 with an inner sealing ring 210, and the inner stopper is provided to be movable by a given interval in the up and down direction below the inner face of a top 110 of the cap main body, and when the movable interval of the inner stopper is defined as (b), the maximum tilting angle of the inner stopper is defined as α deg. and the outer diameter of the inner stopper is specified as (f), while the interval of the end stopper to the plane outer periphery of the lower face of the inner sealing ring is defined as (c) and the inner diameter of the plane of the lower face of the inner sealing ring is specified as (d) and also the plane inner diameter of the upper face of the bottle neck section is specified as (e), c×tanα deg.<(e-d)/2 and f×tanα deg.=b is satisfied. |
