Patent ID: 6032835
Filing Date: 2000-03-07
Classification: B23K,B65D

Abstract:
A method of assembling an aerosol dispenser comprising a metal body, a metal closure, and means for dispensing material from the interior of the dispenser, wherein the closure comprises an annular flange extending circumferentially about its axis, is positioned at the open end of and coaxially with the body which comprises a complementary annular flange extending circumferentially about its axis, such that the flanges are parallel and in contact with each other wherein the flanges are outwardly directed and flat and wherein a fixed member is placed on one side of the pair of flanges and a welding horn in the form of a ring is brought into contact with the other flange to urge the flanges together, said ring being coaxial with and of substantially the same diameter as said flanges, and whereby the ring is vibrated at an ultrasonic frequency about its axis of rotational symmetry to weld the flanges together ultrasonically to form a metal-to-metal seal.