Abstract: A method of manufacturing a rectangular battery includes: ironing the blank thereby forming an interim cup including an interim bottom whose area is larger than a bottom plate of the rectangular battery can, an inclined wall tilting upwardly formed continuously from each longitudinal end of the interim bottom, a short side wall formed continuously from the inclined wall, and a long side wall formed continuously from a curved corner formed on each lateral end of the interim bottom; deforming the interim cup such that each boundary between the interim bottom and the inclined wall is displaced toward a longitudinal end of the bottom plate of the rectangular battery can, and a width of the interim bottom is adjusted to a width of the bottom plate of the rectangular battery can; and ironing the short side and long side walls to reduce thicknesses of the short side and long side walls.

Abstract: A battery case includes a mounting surface formed into a desired shape to place a sealing plate stably thereon. The battery case includes: an open box-shaped case body holding components of a battery; and a sealing plate that is integrated with the case body to close an opening of the case body. A stepped portion on which the sealing plate is placed is formed on an inner wall surface of the case body. The stepped portion includes: a mounting surface on which the sealing plate is placed; an opposed surface opposed to a periphery of the sealing plate placed on the mounting surface; and a depressed corner depressed outwardly from the opposed surface between the mounting surface and the opposed surface.

Abstract: A painting method and a painting apparatus for a band material that prevent a printing defect during a long-time operation by preventing agglomeration and adhesion of a thixotropic paint in a paint pan is disclosed. The liquid paint is discharged to the paint pan as a jet flow from a level lower than a liquid surface of a paint basin toward a bottom of the paint pan, thereby creating a bottom flow along the bottom of the paint pan and an upward vortex from the bottom along a side wall of the paint pan. The liquid paint overflows in an amount corresponding to a supplied amount to the paint pan from a front upper edge of the paint pan in a flowing direction of the bottom flow, thereby flowing the liquid paint continuously in the paint pan toward the front upper edge.

Abstract: An apparatus and a method for accurately processing a neck portion of a bottle-shaped can without changing a posture of the can. An inner tool is inserted into the neck portion from the bottom of a can body to form a stepped portion, and comprises a first forming section having a diameter smaller than an inner diameter of a neck portion. An outer tool comprises a second forming section that is opposed to the inner tool. The stepped portion is formed on the neck portion by sandwiching the neck portion by the first forming section and the second forming section. The inner tool further comprises a holding member that is situated coaxially with the can body to be contacted to an inner surface of the can body. The holding member is attached to the inner tool while being allowed to move in a radial direction together with the can body.

Abstract: A bottle-shaped can in which flatness and circularity of a neck portion are improved. An upper incomplete thread portion is formed at an upper end of a thread. A height of the upper incomplete thread portion is shorter than an average height of the thread, and increases gradually toward the average height. A length of the upper incomplete thread portion between a first point and a second point is set in such a manner that an angle between a line drawn between the first point and a center point of the neck portion, and a line drawn between the second point and the center point of the neck portion falls within a range from 20 degrees to 60 degrees.

Abstract: A bottle-shaped can in which a cap can be mounted on a neck portion without damaging slits and bridges. An annular bead comprises a diametrically largest portion, an upper inclined surface, and a lower inclined surface. An angle of inclination of the upper inclined surface is narrower than that of the lower inclined surface. A thread ridge comprises an incomplete thread portion in which a groove depth is shallower than an average groove depth of the thread ridge, and the incomplete thread portion is formed at one end of the thread ridge on the upper inclined surface at least partially. An angle of inclination of a lower wall of the thread ridge is greater than that of the upper inclined surface so that a protruding corner is formed. The slits and the bridges are situated at a level lower than the protruding corner.

Abstract: A bottle-shaped can in which a cap can be mounted on a neck portion without damaging slits and bridges. An annular bead comprises a diametrically largest portion, an upper inclined surface, and a lower inclined surface. An angle of inclination of the upper inclined surface is narrower than that of the lower inclined surface. A thread ridge comprises an incomplete thread portion in which a groove depth is shallower than an average groove depth of the thread ridge, and the incomplete thread portion is formed at one end of the thread ridge on the upper inclined surface at least partially. An angle of inclination of a lower wall of the thread ridge w is greater than that of the upper inclined surface so that a protruding corner is formed. The slits and the bridges are situated at a level lower than the protruding corner.

Abstract: A bottle-shaped can in which flatness and circularity of a neck portion are improved. An upper incomplete thread portion is formed at an upper end of a thread. A height of the upper incomplete thread portion is shorter than an average height of the thread, and increases gradually toward the average height. A length of the upper incomplete thread portion between a first point and a second point is set in such a manner that an angle between a line drawn between the first point and a center point of the neck portion, and a line drawn between the second point and the center point of the neck portion falls within a range from 20 degrees to 60 degrees.

Abstract: An apparatus and a method for accurately processing a neck portion of a bottle-shaped can without changing a posture of the can. An inner tool is inserted into the neck portion from the bottom of a can body to form a stepped portion, and comprises a first forming section having a diameter smaller than an inner diameter of a neck portion. An outer tool comprises a second forming section that is opposed to the inner tool. The stepped portion is formed on the neck portion by sandwiching the neck portion by the first forming section and the second forming section. The inner tool further comprises a holding member that is situated coaxially with the can body to be contacted to an inner surface of the can body. The holding member is attached to the inner tool while being allowed to move in a radial direction together with the can body.

Abstract: A method for configuration of an outwardly curled portion formed on an opening portion of a metal can, in which both inner and outer faces of a metal sheet forming at least around the opening portion are covered with a resin film, in which the curled portion formed above an inclined face by curling an upper end of a trim end portion so as to confine it inside of the curled portion, as being squeezed in the can radius direction so as to contact a lower end thereof with the inclined face, and in which the metal sheet layers are folded in the can radius direction via the resin films except around both upper and lower ends of the curled portion. Accordingly, the trim end portion of in the curled portion can be prevented from getting rusty, and deterioration in the appearance of the curled portion can be avoided. Moreover, the strength of the curled portion is enhanced so that the resistance against the deformation is improved.

Abstract: A configuration of an outwardly curled portion formed on an opening portion of a metal can, in which both inner and outer faces of a metal sheet forming at least around the opening portion are covered with a resin film, in which the curled portion formed above an inclined face by curling an upper end of a trim end portion so as to confine it inside of the curled portion, as being squeezed in the can radius direction so as to contact its lower end with the inclined face, and in which the metal sheet layers are folded in the can radius direction via the resin films in the most part but except around both upper and lower ends of the curled portion. Accordingly, the trim end portion of in the curled portion can be prevented from getting rusty, and deterioration in the appearance of the curled portion can be avoided. Moreover, the strength of the curled portion is enhanced so that the resistance against the deformation is improved.

Abstract: A method for configuration of an outwardly curled portion formed on an opening portion of a metal can, in which both inner and outer faces of a metal sheet forming at least around the opening portion are covered with a resin film, in which the curled portion formed above an inclined face by curling an upper end of a trim end portion so as to confine it inside of the curled portion, as being squeezed in the can radius direction so as to contact a lower end thereof with the inclined face, and in which the metal sheet layers are folded in the can radius direction via the resin films except around both upper and lower ends of the curled portion. Accordingly, the trim end portion of in the curled portion can be prevented from getting rusty, and deterioration in the appearance of the curled portion can be avoided. Moreover, the strength of the curled portion is enhanced so that the resistance against the deformation is improved.

Abstract: A can body manufacturing method, in which a bottomed cylindrical long cup is shaped from a metal material, in which a printed decoration is then applied to the outer face of a cylindrical trunk portion of the long cup, and in which one of the end sides of the long cup is then shaped into a sloped shoulder portion which is diametrically reduced toward the leading end side: wherein the printed decoration is printed on the outer face of the cylindrical trunk portion of the long cup to the portion to be shaped into the shoulder portion at a subsequent treatment, and wherein the pattern or letter of the printed decoration applied to the portion to be shaped into the shoulder portion is distorted to be wider in the upward direction, in comparison with a final desired figure.

Abstract: A can body manufacturing method, in which a bottomed cylindrical long cup is shaped from a metal material, in which a printed decoration is then applied to the outer face of a cylindrical trunk portion of the long cup, and in which one of the end sides of the long cup is then shaped into a sloped shoulder portion which is diametrically reduced toward the leading end side: wherein the printed decoration is printed on the outer face of the cylindrical trunk portion of the long cup to the portion to be shaped into the shoulder portion at a subsequent treatment, and wherein the pattern or letter of the printed decoration applied to the portion to be shaped into the shoulder portion is distorted to be wider in the upward direction, in comparison with a final desired figure.

Abstract: A configuration of an outwardly curled portion formed on an opening portion of a metal can, in which both inner and outer faces of a metal sheet forming at least around the opening portion are covered with a resin film, in which the curled portion formed above an inclined face by curling an upper end of a trim end portion so as to confine it inside of the curled portion, as being squeezed in the can radius direction so as to contact its lower end with the inclined face, and in which the metal sheet layers are folded in the can radius direction via the resin films in the most part but except around both upper and lower ends of the curled portion. Accordingly, the trim end portion of in the curled portion can be prevented from getting rusty, and deterioration in the appearance of the curled portion can be avoided. Moreover, the strength of the curled portion is enhanced so that the resistance against the deformation is improved.

Abstract: A bottle-shaped can manufacturing method for forming a shoulder portion having a slope and a diametrically small cylindrical neck portion integrally by further working a bottom side of a bottomed cylindrical can which is formed thinner at its trunk wall than at its bottom wall by drawing a metallic sheet having a thickness of 0.1 to 0.4 mm and by executing at least one thinning working of a bending/extending working and an ironing working.

Abstract: A bottle-shaped can manufacturing method for forming a shoulder portion having a slope and a diametrically small cylindrical neck portion integrally by further working a bottom side of a bottomed cylindrical can which is formed thinner at its trunk wall than at its bottom wall by drawing a metallic sheet having a thickness of 0.1 to 0.4 mm and by executing at least one thinning working of a bending/extending working and an ironing working.

Abstract: A bottle-shaped can manufacturing method for forming a shoulder portion having a slope and a diametrically small cylindrical neck portion integrally by further working a bottom side of a bottomed cylindrical can which is formed thinner at its trunk wall than at its bottom wall by drawing a metallic sheet having a thickness of 0.1 to 0.4 mm and by executing at least one thinning working of a bending/extending working and an ironing working.

Abstract: The invention is a bottle-shaped can manufacturing method of shaping a neck portion, a shoulder portion and a body portion integrally.

Abstract: A process for manufacturing a cylindrical metal can having, on its side walls, projected portions and recessed portions. The projected portions are formed by forcing the side walls radially outwardly, and the recessed portions are formed by urging unprojected portions radially inwardly while the projected portions are being forced radially outwardly.