Patent ID: 11905073
Assignee: DAIWA CAN COMPANY
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A cap comprising:
a cap body including a top plate portion, and a skirt portion integrally provided with the top plate portion through a curved corner portion having an annular shape, wherein the cap body is screwed to a mouth portion of a can container; and
a disk-shaped sealing member including a sliding layer which is provided separately from the cap body to face the top plate portion, the siding layer includes a protrusion portion formed on an outer peripheral side of a portion opposed to the mouth portion when the cap body is screwed with the can container, the protrusion portion gradually decreasing in thickness toward an outer peripheral edge, and slides on the top plate portion, the protrusion portion being an annular protruding shape inclined with respect to an axial direction of the sliding layer, and a sealing layer is provided on the surface on the opposite side of the surface facing the top plate portion of the sliding layer including the protrusion portion; and wherein an outer diameter of the sealing layer is either the same as an outer diameter of the sliding layer or larger than an outer diameter of the sliding layer.