METALLIC DOUBLE-STRUCTURED CAP

To provide a metallic double-structured cap that does not allow an engagement part for a container body to be viewed from outside.SOLUTION: A metallic double-structured cap 100 mounted at a mouth part 3 of a container body 1 storing a content, comprises: a metallic inner cap 10 which has an engagement part engaged with the mouth part 3; and a metallic outer cap 20 which covers the inner cap 10 radially from outside, wherein the inner cap 10 has: an inner cylinder part 11 which has the engagement part formed thereon; and an outer cylinder part 15 connected to the inner cylinder part 11 and formed radially outside the inner cylinder part 11. The engagement part is formed as inner and outer surfaces of the cylindrical inner cylinder part 11 deform into a concave/convex shape in phase with each other. The outer cap 20 has: a peripheral wall 21 to which an outer peripheral surface of the outer cylinder part 15 is fitted; and a top wall 23 which closes an upper end part of the peripheral wall 21. A restriction part which restricts relative movement in a peripheral direction of the peripheral wall 21 with respect to the outer cylinder part 15 is formed on at least one of the outer peripheral surface of the outer cylinder part 15 and an inner peripheral surface of the peripheral wall 21.SELECTED DRAWING: Figure 2 【課題】容器本体との係合部を外部に視認させることがない金属製二重構造キャップを提案する。【解決手段】本開示に係る金属製二重構造キャップ１００は、内容物を収容する容器本体１の口部３に装着する金属製二重構造キャップ１００であって、口部３に係合する係合部が形成された金属製の内キャップ１０と、内キャップ１０を径方向外側から覆う金属製の外キャップ２０とを備え、内キャップ１０は、係合部が形成された内筒部１１と、内筒部１１に連なるとともに内筒部１１の径方向外側に形成された外筒部１５とを有し、係合部は、筒状の内筒部１１の外内面が同位相で凹凸変形することにより形成されており、外キャップ２０は、外筒部１５の外周面が嵌合する周壁２１と、周壁２１の上端部を閉塞する天壁２３とを有し、外筒部１５の外周面及び周壁２１の内周面の少なくとも一方には、外筒部１５に対する周壁２１の周方向の相対移動を規制する規制部が形成されることを特徴とする。【選択図】図２