By conducting a strict study on a plate thickness, a pressure resistance is improved while satisfying the demand for further reduction of the plate thickness.

A can lid has a center panel part, a panel wall part, a chuck wall radius part, a chuck wall part, and a curl part. t2>t1 holds, where t1 represents a plate thickness of the center panel part, and t2 represents a plate thickness of a bottom end of the panel wall part.

Beverage containers are provided for storing liquid contents. In various embodiments, containers are provided with devices and means for allowing a controlled ingress or oxygen or similar material to the container contents. In preferred embodiments, devices and methods for storing wine are provided.

A can lid is provided for excellence in an explosion-proof function and a suitability for a hammering inspection. A buckling-inducing section that is easily deformed angularly is formed on a plurality of sites in a circumferential portion of a panel section. A score line intersects with a virtual line passing through a center of the panel section and a center of the buckling-inducing section. End portions of the score line are situated closer to the center of the panel section than a virtual boundary line extending perpendicular to the virtual line. A circular depression is formed at the center of the panel section. A slant wall section is formed between the buckling-inducing section and an inner side wall, and the slant wall section is joined to the inner side wall through a curved portion.

A can lid is provided for excellence in an explosion-proof function and a suitability for a hammering inspection. A buckling-inducing section that is easily deformed angularly is formed on a plurality of sites in a circumferential portion of a panel section. A score line intersects with a virtual line passing through a center of the panel section and a center of the buckling-inducing section. End portions of the score line are situated closer to the center of the panel section than a virtual boundary line extending perpendicular to the virtual line. A circular depression is formed at the center of the panel section. A slant wall section is formed between the buckling-inducing section and an inner side wall, and the slant wall section is joined to the inner side wall through a curved portion.

A coated aluminum sheet includes an aluminum alloy sheet including a first surface and a second surface situated opposite to the first surface and first and second coating films formed on the first and second surfaces, respectively. The first and second coating films each have a mass of 0.1 to 20 g/m.sup.2 per unit area. The first coating film includes 0.1 to 1.5% by mass of a polyethylene wax and 0.1 to 1.5% by mass of a carnauba wax. The second coating film includes 0.4 to 0.8% by mass of a polyethylene wax and 0.4 to 0.8% by mass of a carnauba wax. Respective contents of another wax in the first and second coating films are 1.5% by mass or less and 0.7% by mass or less respectively. Post-lubrication including a petrolatum wax on the second coating film is 10 mg/m.sup.2 or less in amount.

A tamper evident feature for a container is provided. The tamper evident feature may include a locking tab connected to a wall panel or cover panel of the container and a receiving slot provided on the opposing cover panel or wall panel of the container. The locking tab may include an outer terminal edge and a slit extending laterally across the locking tab. The slit may provide a cut edge extending partially across an intermediate portion of the locking tab and allow for a tab end portion to bend relative to the remainder of the locking tab. The receiving slot may include a receiving slit defined into the cover panel of the container and configured to receive the locking tab. The receiving slit may provide a receiving edge that engages with the cut edge of the locking tab to secure the cover panel in a closed position.

A tamper evident feature for a container is provided. The tamper evident feature may include a locking tab connected to a wall panel of the container and a receiving slot provided on a cover panel of the container. The locking tab may include a locking end portion with an outer terminal edge and a slit extending laterally across the locking tab. The slit may provide a cut edge extending partially across an intermediate portion of the locking tab and allow for a tab end portion to bend relative to the remainder of the locking tab. The receiving slot may include a receiving slit defined into the cover panel of the container and configured to receive the locking end portion of the locking tab. The receiving slit may provide a receiving edge that engages with the cut edge of the locking tab to secure the cover panel in a closed position.

A pressure resistant basic shell, easy open end and can with easy open end, wherein the basic shell consists of a can seaming portion, a countersink portion, a ferrule arc portion, an upward extension portion of ferrule and a center panel from periphery to center in the cross section; the countersink portion also consists of a sixth arc portion and a second straight portion, and the sixth arc portion and the second straight portion are connected in a tangent way, and the second straight portion and the ferrule arc portion are connected in a tangent way; the center of the sixth arc portion is located below the upper surface of the center panel. The break probability under the failure of pressure resistance is lowered to 0.05%˜2.5%, which significantly improves the safety of use.

A coated aluminum sheet includes an aluminum alloy sheet including a first surface and a second surface situated opposite to the first surface and first and second coating films formed on the first and second surfaces, respectively. The first and second coating films each have a mass of 0.1 to 20 g/m.sup.2 per unit area. The first coating film includes 0.1 to 1.5% by mass of a polyethylene wax and 0.1 to 1.5% by mass of a carnauba wax. The second coating film includes 0.4 to 0.8% by mass of a polyethylene wax and 0.4 to 0.8% by mass of a carnauba wax. Respective contents of another wax in the first and second coating films are 1.5% by mass or less and 0.7% by mass or less respectively. Post-lubrication including a petrolatum wax on the second coating film is 10 mg/m.sup.2 or less in amount.

The disclosed systems and methods relate to improved tamper-proof cases for securely storing and shipping products. A case can include a back panel, two sidewalls, an upper foldable section, and a lower foldable section. Each of the features of the case can be manufactured on a single sheet of material. The upper and lower foldable sections include panels having apertures for holding the top and bottom of a product, respectively. The upper foldable section includes one or more fasteners that secures the upper foldable section to the sidewalls. Once secured, the products cannot be removed from the case without showing evidence of the removal. The disclosed systems also provide a tear strip and/or a tear corner that can be used to release the products from the sealed case.