US 11,834,228 B2
Cap
Eiji Fujishige, Sagamihara (JP); Junji Matsumura, Sagamihara (JP); Eiji Araki, Sagamihara (JP); Kenji Takagi, Sagamihara (JP); and Keisuke Hashimoto, Sagamihara (JP)
Assigned to DAIWA CAN COMPANY, Tokyo (JP)
Filed by Daiwa Can Company, Tokyo (JP)
Filed on Apr. 22, 2021, as Appl. No. 17/237,214.
Application 17/237,214 is a continuation of application No. PCT/JP2019/042544, filed on Oct. 30, 2019.
Claims priority of application No. 2018-205348 (JP), filed on Oct. 31, 2018.
Prior Publication US 2021/0237943 A1, Aug. 5, 2021
Int. Cl. B65D 41/34 (2006.01); B65D 53/04 (2006.01)
CPC B65D 41/34 (2013.01) [B65D 53/04 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A cap comprising:
a cap body including
a disk-shaped top plate portion,
a cylindrical skirt portion provided at a peripheral edge portion of the top plate portion, and
a corner portion being continuous with the top plate portion and with the skirt portion; and
a disk-shaped sealing member including a sliding layer and a sealing layer, the sliding layer disposed on the top plate portion side and having a thin portion thinner than at least a center side of the sliding layer, the thin portion being provided on an outer peripheral edge side, and the sealing layer provided on a main surface opposite to the top plate portion side of the sliding layer and sealing a mouth portion of a can container,
wherein an outer diameter of the sliding layer is smaller than an inner diameter of the skirt portion,
wherein the thin portion of the sliding layer is an annular recess formed on the outer peripheral edge side of the main surface in which the sealing layer is provided, and
wherein the thin portion is provided at a position facing a base point of deformation of the top plate portion when the corner portion of the cap body is being drawn.