초록 ▼

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 interpo

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.

대표청구항 ▼

1. A double pressurized container for under-cup charging comprising a container main body having an opening at an upper end, a mounting cup so mounted as to close said opening, and a flexible inner bag interposed between said container main body and said mounting cup;wherein said mounting cup is equ

1. A double pressurized container for under-cup charging comprising a container main body having an opening at an upper end, a mounting cup so mounted as to close said opening, and a flexible inner bag interposed between said container main body and said mounting cup;wherein said mounting cup is equipped with a plug inserted into an inner surface of said container main body with an inner bag therebetween and a cup-shaped cover made of a metal sheet which covers said plug and also a periphery of which is crimped to an outer periphery of said container main body; wherein said plug slightly expands the inner bag when said plug is fitted therein; and wherein said container main body is equipped with a cylindrical portion at an upper part and an annular protrusion which protrudes toward an inner side of said cylindrical portion, said inner bag has a cylindrical portion which is engaged to said cylindrical portion of said container main body, and said inner bag is sealed, being clamped between a side step portion and said annular protrusion of said mounting cup.