| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a novel cap that arranges a member absorbing pressure reduction inside the cap and can cope with pressure reduction of the inside of a container without spoiling the appearance of the cap, in which productivity thereof can be improved and the member is not dropped in opening the cap. <P>SOLUTION: The cap 1 includes a cap body 3 and a movable separation wall 5. The cap body 3 includes a ceiling plate 7 and a peripheral wall 9 hung down from the outer peripheral edge of the ceiling plate 7 and fitted to the outer periphery of a mouth part C1 of a container C. The movable separation wall 5 extends over entire inner surface of the ceiling plate 7, is inverted toward the inside of the container accompanying pressure reduction of the inside of the container, and is restored to the original shape by release of the pressure reduction. The cap 1 is formed by peelably integrating the cap body 3 and the separation wall 5 by insert molding or two material molding and includes engaging parts 23, 25 engaging with each other in the axial direction X in each of the cap body 3 and the separation wall 5, with one engaging part 23 being integrated with the other engaging part 25 by insert molding or two material molding. <P>COPYRIGHT: (C)2012,JPO&INPIT |
