To provide a sealable lid capable of being easily unsealed at a low cost by providing a sealed cylindrical part in which a laminate covered with the synthetic resin on each surface of an aluminum foil is formed in cylindrical sleeve shape on an outer circumferential surface of a flange part of a plug body, and forming a tearing knob piece on its lower end part.
A plug body part 3 and a top lid part 4 are formed by injection molding of the synthetic resin, and closely joined with each other to form a plug body. A cylindrical sleeve piece is formed by a laminate covered with the synthetic resin on each surface of an aluminum foil, and a tearing knob piece for unsealing is provided on a lower cylindrical wall surface. The formed sealed cylinder 5 is closely attached to a flange part of the plug body, and joined with its outer circumferential part to form a sealed lid body, and fitted to a neck part 6 of a container, and a cut part 5f is sealed and reduced for sealing. In unsealing the cylinder, the sealed cylinder 5 is torn along the cutting line by diagonally pulling the tearing knob piece to separate the lower part from the cutting part 5f.
ARAI TSUGIO
IKEMURA TSUGUHIRO
