DOUBLE PRESSURIZED CONTAINER FOR CHARGING UNDERCUP AND DOUBLE PRESSURIZED PRODUCTS USING THE CONTAINER

摘要

A pressurized container (A) for charging an undercup comprising a container main body (1) equipped with a bead portion (6) around an upper end open periphery thereof, a mounting cup (18) having a curve flange (18d) engaged with the bead portion (6) and an inner bag (2) having flexibility and interposed between the container main body (1) and the mounting cup (18), wherein the inner bag (2) includes a neck portion (10) in close contact with the outer peripheral surface of a rising wall of the mounting cup with a predetermined fitting strength and a flange portion (11) disposed at the upper edge of the neck portion and clamped between the curve flange and the bead portion, and the flange portion (11) exhibits a sealing action when pushed to the inner surface of the curve flange (18d) by a charging pressure at the time of charging of the undercup and a sealing action when it is clamped between the curve flange (18d) and the bead portion (6) after assembly.