Method for making a valve for sealing an evacuation port
AssigneeAvery Dennison Corporation
InventorsRonald Newrones, Richard L. Sandt, Ronald F. Sieloff
Life of this patent
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Abstract
A valve (20) is provided for sealing an evacuation port (16) in a port area (18) of a wall structure (12) of a container. The valve (20) comprises a casing (22) having a shell portion (30) which is deformable from an open condition, whereat the shell portion (30) forms a chamber (32) over the port area (18), and a closed condition, whereat the shell portion (30) contacts the port area (18). When the shell portion (30) is in its open condition, gas exits from the chamber (32) through gas-releasing holes (24) in the casing (22). When the shell portion (30) is deformed to its closed condition, a port-sealing adhesive (26) adheres to the port area (18) to thereby seal the evacuation port (16).
Claims12
A method for making a valve for sealing an evacuation port in a port area of a wall structure of a container, wherein the method comprises:
- providing a sheet of material;
- forming a shell portion in a casing in the sheet which are deformable from an open condition, whereat the shell portion forms a chamber over the port area, and a closed condition, whereat the shell portion contacts the port area;
- forming a gas-releasing opening in the casing, through which gas exits from the chamber when the shell portion is in the opened condition;
- providing a supporting structure positioned between the casing and a wall structure;
- and
- printing a port-sealing adhesive on the sheet adhering the shell portion to the port area when the shell portion is in the closed condition, to thereby seal the evacuation port.
Dependencies are inferred from the claim text.