EXTREME BARRIER METAL PISTON AND CONTAINER UTILIZING SAME

摘要

An improved barrier member for use in a pressurized container is disclosed. The barrier member may be manufactured from a sheet metal for improved resistance to product and/or propellant permeation without compromising the sealing performance of the barrier member against the interior surface of the pressurized container. The barrier member may include a flexible sidewall that can conform to the inner sidewall of the container. The disclosed barrier member may also include one or more surface irregularities on the side portion thereof to further improve the sealing performance of the barrier member. The bottom edge of the barrier member may be inwardly curled at one or more peripheral locations to prevent or reduce the scratching of the interior surface of the pressurized container.