EASILY OPENABLE SEALED CONTAINER.

摘要

Out of the sealed portions, at least an opening starting portion has a laminated structure of a number of container elements (1,3) and an intermediate member (4) inserted between. The intermediate member and one of the container elements are tightly sealed, while the intermediate member and the other of the container elements are sealed so that they can be peeled off easily. The inner edge (9) of an easily peelable sealed portion (8) is positioned closer to the centre of the container than the inner edge (10) of a tightly sealed portion (7). In an opening starting position the outer edge (12) of the easily peelable sealed portion (8) is positioend closer to the centre of the container than the outer edge (13) of the tightly sealed portion. In this easily openable sealed container, the part to which the peeling force exerted from the centre of the container to the sealed portion is concentrated is the tightly sealed portion (7) having a high peeling strength. Therefore, this part can withstand an increased inner pressure of the container occcurring due to the retort sterilisation. Since the part to which the peeling force exerted from the outer side of the contianer to the sealed portion is the easily peelable sealed portion (8), the container can be opened easily by hand.