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AssigneeToyo Seikan Kaisha, Ltd.
InventorsMichio Watanabe, Kazuhisa Ishibashi, Hisakazu Yasumuro, Hideo Kurashima, Tsuneo Imatani
Estimating the term…
There is provided a method of making a metallic container having a predetermined or standard height and a circumferential seam of the type which is formed by fitting a first open end portion of an upper can body having a venting portion and a second open end portion of a lower can body having a bottom portion to each other with a heat sealable adhesive layer therebetween to form a metallic container preform having a fitted portion, and heating the fitted portion thereby to fuse the adhesive layer. The container preform is placed between a first member and a second member which are oppositely disposed with a predetermined distance therebetween, such that the venting portion faces the first member and the bottom portion faces the second member, then the fitted portion is heated, simultaneously the internal pressure of the container preform is allowed to enhance, and the axial outward slip between the first and second open end portions through the fused adhesive layer which is caused by the elevated internal pressure, is suppressed by the first and second members.
A method of making a metallic container having a circuferential seam, said circumferential seam being formed by fitting a first open end portion of an upper can body having a venting portion and a second open end portion of a lower can body having a bottom portion to each other with a heat sealable layer therebetween to form a metallic container preform having a fitted portion, said first and second end portions extending axially and straightly, and heating the fitted portion thereby to fuse said adhesive layer, which comprises placing said container preform between a first member and a second member which are oppositely disposed with a predetermined distance therebetween, such that said venting portion faces said first member and said bottom portion faces said second member, heating said fitted portion, while simultaneously enhancing through a gaseous medium an internal pressure generated in said container prefrom, thus causing an axial outward slip between said first and second open end portions through said fused adhesive layer by the elevated internal pressure, until said container preform has a predetermined height, and then suppressing any further axial outward slip by said first and second members when said container preform has reached said predetermined height, thereby to form said container having said predetermined height.
Dependencies are inferred from the claim text.