| 摘要 |
Disclosed is an easy-open container provided with a container main body (2) having a flange (25) at the periphery of an opening, wherein a surface layer (21) of the container main body (2) on the flange and a seal layer (31) of a lid (3) are annularly heat-sealed, and the sealed portion (26) of at least one of the container main body (2) and the lid (3) is subjected to interfacial peeling or cohesion failure, so that the lid (3) can be opened. The easy-open container is characterized in that, in a first heat-seal step for applying heat-sealing, the lid (3) is placed on the upper surface of the flange (25) of the container main body (1), a first annular sealing board is pressed from above the upper side of the lid (3) toward the upper surface of the flange (25), a torose resin accumulation portion (6) is formed on the flange (25) near a position where the inner periphery of the first annular sealing board abuts the flange (25), and the resin accumulation portion has a specific shape. Taking the continuous productivity into account, it is preferable that a second annular sealing board is pressed from above the lid (3) so that the resin accumulation portion has a specific shape. |
