A reduced gauged crown for a container opening includes a corrugated panel portion such that the corrugation strengthens the crown material and allows less material to be used for the crown than would be used for an uncorrugated bottle cap.

A reduced gauged crown for a container opening includes a corrugated panel portion such that the corrugation strengthens the crown material and allows less material to be used for the crown than would be used for an uncorrugated bottle cap.

A reduced gauged crown for a container opening includes a corrugated panel portion such that the corrugation strengthens the crown material and allows less material to be used for the crown than would be used for an uncorrugated bottle cap.

A can body has a curl portion to which a skirt portion of a cap is mounted. In the curl portion, an outer periphery upper-side bent portion that forms an outer peripheral portion of a folded-back top portion, an outer periphery-side tubular portion that extends downward in a can axis direction, an outer periphery lower-side bent portion that is bent inward in a radial direction, and a curl end portion that extends from an inner peripheral edge of the outer periphery lower-side bent portion are continuously formed. When a radius of curvature of an outer surface of the outer periphery upper-side bent portion is R5 (mm), a radius of curvature of an outer surface of the outer periphery lower-side bent portion is R6 (mm), and a radius of curvature of an outer surface of the inflection portion is R7 (mm), which is 0.05 to 0.2 mm, R7<R6<R5 is established.

A can body has a curl portion to which a skirt portion of a cap is mounted. In the curl portion, an outer periphery upper-side bent portion that forms an outer peripheral portion of a folded-back top portion, an outer periphery-side tubular portion that extends downward in a can axis direction, an outer periphery lower-side bent portion that is bent inward in a radial direction, and a curl end portion that extends from an inner peripheral edge of the outer periphery lower-side bent portion are continuously formed. When a radius of curvature of an outer surface of the outer periphery upper-side bent portion is R5 (mm), a radius of curvature of an outer surface of the outer periphery lower-side bent portion is R6 (mm), and a radius of curvature of an outer surface of the inflection portion is R7 (mm), which is 0.05 to 0.2 mm, R7<R6<R5 is established.

An easily operable pull-off beverage bottle closure. The closure has a shell, a pull tab, and a liner covering the inner section of the shell providing circumferential sealing. The shell has score lines running on both sides of the pull tab enabling to tear off the closure. The liner is affixed to the inner upper section of the closing plane and covers the surface bigger than the surface limited by the score lines running through the upper plane of the shell.

A can body has a curl portion to which a skirt portion of a cap is mounted. In the curl portion, an outer periphery upper-side bent portion that forms an outer peripheral portion of a folded-back top portion, an outer periphery-side tubular portion that extends downward in a can axis direction, an outer periphery lower-side bent portion that is bent inward in a radial direction, and a curl end portion that extends from an inner peripheral edge of the outer periphery lower-side bent portion are continuously formed. When a radius of curvature of an outer surface of the outer periphery upper-side bent portion is R5 (mm), a radius of curvature of an outer surface of the outer periphery lower-side bent portion is R6 (mm), and a radius of curvature of an outer surface of the inflection portion is R7 (mm), which is 0.05 to 0.2 mm, R7<R6<R5 is established.

A can body has a curl portion to which a skirt portion of a cap is mounted. In the curl portion, an outer periphery upper-side bent portion that forms an outer peripheral portion of a folded-back top portion, an outer periphery-side tubular portion that extends downward in a can axis direction, an outer periphery lower-side bent portion that is bent inward in a radial direction, and a curl end portion that extends from an inner peripheral edge of the outer periphery lower-side bent portion are continuously formed. When a radius of curvature of an outer surface of the outer periphery upper-side bent portion is R5 (mm), a radius of curvature of an outer surface of the outer periphery lower-side bent portion is R6 (mm), and a radius of curvature of an outer surface of the inflection portion is R7 (mm), which is 0.05 to 0.2 mm, R7<R6<R5 is established.

A pull tab crown for a bottle or other container provides an opener secured to the top of the crown. The crown has an annular skirt with an annular edge. Score lines extend from the opener assembly to the skirt. One of the score lines is curvilinear and terminates at the annular edge. A second score line has a segment that extends from the opener assembly to an endpoint substantially spaced from the bottom annular edge of the skirt.

A pull tab crown for a bottle or other container provides an opener secured to the top of the crown. The crown has an annular skirt with an annular edge. Score lines extend from the opener assembly to the skirt. One of the score lines is curvilinear and terminates at the annular edge. A second score line has a segment that extends from the opener assembly to an endpoint substantially spaced from the bottom annular edge of the skirt.