US 12,303,958 B2
Manufacturing tooling and methods for producing push button container closures
James Bach, Dayton, OH (US); and R. Peter Stodd, Vandalia, OH (US)
Assigned to Consumer Convenience Technologies LLC, Dayton, OH (US)
Appl. No. 18/250,084
Filed by Consumer Convenience Technologies LLC, Dayton, OH (US)
PCT Filed Jan. 27, 2022, PCT No. PCT/US2022/014047
§ 371(c)(1), (2) Date Apr. 21, 2023,
PCT Pub. No. WO2023/146522, PCT Pub. Date Aug. 3, 2023.
Prior Publication US 2024/0390969 A1, Nov. 28, 2024
Int. Cl. B21D 22/28 (2006.01); B65D 43/02 (2006.01)
CPC B21D 22/28 (2013.01) [B65D 43/0202 (2013.01); B65D 2543/00092 (2013.01); B65D 2543/00935 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of manufacturing a push button container closure (10) from a sheet of material, the method comprising:
providing a blank (50) of a container closure including a generally planar center panel (12) and a sidewall (18) extending from a periphery (20) of the center panel at a corner junction (22) for processing at a series of first, second, third, and fourth press stations;
deforming, using the first press station (70), the center panel of the container closure to include a bubble (58) projecting upwardly from a remainder of the center panel;
further deforming, using the second press station (80), the center panel at the bubble to form a central button (24) and a depressed annular region (26) surrounding the central button, with the central button located in relative elevation below the corner junction of the container closure;
deforming, using the third press station (100), an outer region (60) of the center panel located between the depressed annular region and the sidewall to reshape the center panel at the outer region and thereby move the central button upwardly closer to an elevation of the corner junction of the container closure;
scoring, using the fourth press station (120), the depressed annular region surrounding the central button to provide main scores (30, 32) and ancillary scores (34) into an upper surface (16) of the container closure,
wherein all scores cut into the container closure are formed only at the fourth press station in a single compression action, and a selected one of the main scores is cut deeper into material of the container closure than all other scores such that the central button can be pushed to sever the center panel at the selected one of the main scores to release a pressure differential across the container closure.