A method of making a can end, which includes a recessed panel defined by an upwardly extending chuck wall, a peripheral scoreline disposed in a public side of the panel proximate to the base of the chuck wall, a tab fastened to the panel by a rivet, includes the step of employing tooling to form a pressure resistance bead extends around the panel inboard of the peripheral scoreline and outboard of the rivet. The tooling forms a saw tooth panel formation proximate to the pressure resistance bead inboard of the pressure resistance bead. Among other benefits, the pressure resistance bead and saw tooth panel formation created by the tooling and method combine to resist wrinkling or other undesired deformation of the can end.

A method of making a can end, which includes a recessed panel defined by an upwardly extending chuck wall, a peripheral scoreline disposed in a public side of the panel proximate to the base of the chuck wall, a tab fastened to the panel by a rivet, includes the step of employing tooling to form a pressure resistance bead extends around the panel inboard of the peripheral scoreline and outboard of the rivet. The tooling forms a saw tooth panel formation proximate to the pressure resistance bead inboard of the pressure resistance bead. Among other benefits, the pressure resistance bead and saw tooth panel formation created by the tooling and method combine to resist wrinkling or other undesired deformation of the can end.

The invention relates to food and beverage containers and the lids that are used to close such containers. During the manufacturing process, it is desirable to stack the lids one on top of the other before presenting them to the machine that will join the lids to the bodies of the containers. Some lids according to my previous invention have ancillary components attached to their main bodies, such as pull tabs that have raised lifter tips or punch tips. Sometimes, the lids have also certain recesses and/or protrusions below or above the main body of the lids. Such ancillaries and/or recesses or protrusions could disturb the integrity of the stacks. Some experts in the industry indicated that they consider that such a stack could be unacceptably SQUISHY. This invention proposes ways and methods and construction designs, which would eliminate such stacking problems, even in the presence of such ancillaries and/or recesses or protrusions or other similar irregular shapes. The stacks will not be squishy.

A can end that is attached to a metal can body with a bottom end forming a cavity that may be filled with food, liquid, etc. The can end is made of metal with a bead configuration located in the outer circumference of the can end that increases its resistance to deformation when subjected to high pressure cooking environments and assists in preventing the can end from separating along the frangible score.