| 摘要 |
PURPOSE:To obtain a two-chamber type container with pressure applied to ensure long-term ejection property of contents by a method wherein an outer can flange made of steel, and inner can flange made of aluminum and a periphery of a metal lid made of metal are overlaid in this sequence and clamped in multiple turns, while the inner can flange made of aluminum covers at least a body hook radius part of the multiple clamped part. CONSTITUTION:An outer can 2 made of steel is bent outward via an upper bead part 17 to form a body hook 18 directing downward. On the other hand a metal lid 4 is bent inward via an outer peripheral cover 22 and a lower bead part 19 to form a cover hook 20 directing upward. The body hook 18 and the cover hook 20 are engaged with each other to be lock-seamed each other while an overlap length L is secured between them as well as a sealant 21 is put into the upper bead part 17 and the lower bead part 19 or further to an overlapped part L thereby maintaining a pressure-resistant airtight structure. A flange 23 of an inner can 3 made of aluminum extends to cover the body hook 18 of the outer can 2 made of steel and is securely held by the body hook 18 and the outer peripheral cover 22 so that pressure-resistant sealability is perfect. |
