Patent ID: 8235232
Filing Date: 2012-08-07
Classification: B65D

Abstract:
1. A cap comprising: an inside plug, which, together with a container main body, forms an airtight space for enclosing contents, and which has a separating part for forming an aperture part in the airtight space; an upper closure having a screwing part that enables attachment and detachment to and from the container main body by a rotation operation, and a holding part configured to form the aperture part by separating the separating part from the inside plug by a rotation operation of the screwing part, and to engage with the separating part when the separating part is separated; the inside plug has in a center thereof an upper opening, which is blocked by the separating part, and has a main body part, which is contiguously connected in the separating part at the upper opening, and engages with the container main body at a peripheral portion; the main body part has a main body part cylinder that forms the upper opening; and the separating part has a separating part cylinder that is offset to either one of an inside diameter or an outside diameter relative to the main body part cylinder by the thickness of the main body part cylinder, and the separating part is disposed adjacent to an upper end wall of the upper closure before forming the aperture part, and is pushed downwardly by the upper end wall of the upper closure in case of forming the aperture part.