| 摘要 |
PROBLEM TO BE SOLVED: To attain highly air-tight joining applicable to the manufacture of containers, in a ultrasonic joining method for aluminum materials. SOLUTION: In a ultrasonic joining method in which plural aluminum materials 21, 22 are arranged in superposition between the working face 2 of an anvil 1 and that 12 of a ultrasonic horn 11, pressed between them under a prescribed pressure, and given ultrasonic vibration by the ultrasonic horn 11 so as to be joined to each other; the aluminum materials 21, 22 are such that the total thickness T is 0.03-2.0mm, that the working face 2 of the anvil 1 and that 12 of the ultrasonic horn 11 are each formed with a number of projections 3, 13 whose top part 4, 14 in total area is not less than 25% but not more 100% of the area of each working face 2, 12, and that the height H4 , HH of each projection 3; 13 is so formed that the maximum opposing distance D between the working faces 2, 12 at the time of joining is within the total thickness T in the thickness direction of the aluminum materials 21, 22. |
