Abstract: A can lid opening tab includes: a pulling-up part provided on one end side in a longitudinal direction; a pressing-down part provided on another end side in the longitudinal direction; a fixing part provided between the pulling-up part and the pressing-down part, and sectioned and formed by a U-shaped slot, and fixed on a can lid body; and the curling part formed continuously on the circumference except for a connecting piece cutting trace provided at the pressing-down part. A step-less unprocessed deflection face with the periphery surrounded without disconnection by the curling part is provided between the fixing part and the pulling-up part, and a display part is provided on at least one face side of the deflection face.

Abstract: It is configured such that, for performing variable engravement for each formed object on a coil material to be fed to a press machine for molding a part of a can, a formed object with an engravement can be molded at a high productivity. A laser engraving device is a device for performing laser engraving on a coil material to be fed to a press machine for molding a part of a can, and includes a feeding mechanism for deeding a coil material at a predetermined speed, a laser head for irradiating the coil material fed at the predetermined speed with a laser beam, and performing engravement for each formed object, and a data communication unit for switching engraving data of the laser head. The data communication unit collectively switches a plurality of engraving data to be subjected to engravement on a plurality of formed objects, and the laser head continuously performs engravement of the plurality of engraving data on predetermined positions of the coil material.

Abstract: In a case where an indication is provided between a fixed part and a pulling-up part of a tab, the tab is provided with necessary rigidity and disturbance of the indication is suppressed. A tab for opening a can lid includes a pulling-up part provided on one end side in a longitudinal direction of the tab, a pressing-down part provided on another end side in the longitudinal direction, a fixed part provided between the pulling-up part and the pressing-down part and formed by being demarcated by a U-shaped slot and fixed to a can lid body, and a curl part formed continuously at a peripheral edge excluding a connected-piece-cutting trace provided at the pressing-down part, a surface between the fixed part and the pulling-up part is a display surface, and a back surface side of the display surface is an abutted surface against which a shaping tool is abutted.