Low mass piston for aerosol can

Details Low mass piston for aerosol can Low mass piston for aerosol can

B - Operations, Transporting

65

D

222/54

B65D 83/14 (2006.01)

Patent

CA 1296301

ABSTRACT An injection-molded piston for an aerosol container has a face portion for contacting and ex- erting pressure on material to be dispensed, and a thin, flexible skirt depending axially from and cir- cumscribing the face portion for forming an effective seal against the inside wall of the container. The outer wall of the skirt is continuous, while the cir- cumference of the inner wall has alternating areas of constant thickness along said areas and areas of minimum thickness, the curved portions forming with the outer wall a plurality of sections, the thickness and circumferential extent of each of which decrease axial- ly along the skirt toward its distal end. The piston includes a depending extension on the skirt which aids sealing.

541804

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