Discharge Container

摘要

The object of this invention is to provide a delaminated bottle, which has a base cup (12) fitted tightly around the bottom cylinder (6) of the container (2) and in which a slit (22) is opened easily for the introduction of outside air into the interspace between the outer layer (2a) and the inner layer (2b). The container has a male screw (5) on the outer wall of container bottom cylinder (6) and the base cup (12) has a female screw (14), which is disposed in the upper portion of the inner surface of cylindrical cup wall (13) and is screwed on the container bottom cylinder (6); The base cup (12) has also a pushing section (11) disposed inside the base cup (12), and this pushing section (11) pushes the walled bottom plates laterally from both sides so as to open a slit (22) in the outer layer (2a) of the pinch-off portion when the base cup (12) is engaged with the male screw (5). The bottom seal is deformed and curved to open a slit (22) easily and reliably so that outside air is introduced into the interspace between the outer layer (2a) and the inner layer (2b).