Extreme barrier metal piston and container utilizing same

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 83/14 (2006.01)

Patent

CA 2662471

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.

La présente divulgation décrit un élément isolant amélioré pour contenant sous pression. Cet élément isolant peut être fabriqué à partir d'une tôle pour améliorer la résistance à la perméation des produits et/ou des agents propulsifs, sans compromettre l'efficacité de l'étanchéité de l'élément isolant par rapport à la surface interieure du contenant sous pression. Ledit élément isolant peut comprendre une paroi latérale souple adaptée à la paroi latérale intérieure du contenant. L'élément isolant divulgué peut aussi comprendre une ou plusieurs irrégularités superficielles sur la partie latérale pour améliorer davantage l'efficacité de l'étanchéité de l'élément isolant. Le bord du fond de l'élément isolant peut être festonné vers l'intérieur à un ou plusieurs emplacements périphériques, pour empêcher ou réduire le rayage de la surface intérieure du contenant sous presssion.

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