Kappe für einen Behälter vom Bag-in-box-Typ.

摘要

A cap device to be mounted to a mouthpiece of a container, in one aspect, comprises a cap member (25) provided with an inner hollow portion (E1) and a film member (21) accommodated in the inner hollow portion. The film member has a laminated structure composed of at least one metal including layer (21b) and a fusing layer (21c) abutting against an open end face of the mouthpiece mounted to the container. The cap device mounted to the mouthpiece is sealed by heating the film member by the high frequency induction heating treatment to fuse the fusing layer at the open end face of the mouthpiece. After the sealing, the cap device is removed and a connector means is connected to the mouthpiece and a pressure is applied to break the film member to establish the communicatin between an interior of the container and a connection line. In another aspect, a cap device comprises a connecting portion connected to the mouthpiece having an inner hollow portion and a coupling projecting portion having, an inner through hole in which a movable valve member is disposed to be axially slidable. The interiors of the container, the connecting portion, the projecting portion and the outer connection line are communicated with each other through the movement of the movable valve member.