Abstract: To reduce a torque to open a closure of a can container having a step of a lap side seam on a thread. A threaded can container of the invention comprises: a cylindrical can body having a lap side seam 16 where longitudinal edges of a metal sheet forms a step portion; a container mouth 5 formed on an opening end of the can body where a thread ridge and a curled portion are formed thereon; a bottom lid seamed to a lower end of the can body; and a resealable closure, which is applied to the container mouth, and which has a resin sealing liner affixed to an inner face of a top panel thereof, and a thread groove rolled on a skirt portion thereof in conformity with the thread ridge; wherein the thread ridge is formed to rotate the closure in a direction from an outer edge of the lap side seam toward an inner layer of the lap side seam to open the closure.

Abstract: An easily rupturable portion, which is ruptured when an inner pressure of a can container is raised extraordinary and the domed portion is thereby deformed to protrude outwardly of the can container, is formed on an outer face side of the domed portion and situated in the close vicinity of an outer circumferential portion of the domed portion continuing into a seamed portion. For example, the easily rupturable portion is ruptured to release the contents of the can container when an inner pressure of a can container is raised extraordinary by heat or the like to deform the domed portion of a bottom lid to protrude outwardly within the outer circumferential portion of the domed portion. Therefore, a gas can be released without blowing off a portion of the can container.

Abstract: A metallic pilfer-proof cap, in which the skirt of a skirt portion of a cap can be so separated by a weakening portion having horizontal slits and bridges formed alternately in the circumferential direction of the cap that the skirt may be left in a ring shape as a pilfer-proof band on the side of a container mouth. The horizontal slits formed by shearing in the transverse direction from the outside to leave the bridges are offset radially more inward of the cap at the portion above a shearing plane than at the portion below the shearing plane so that the bridges are formed on the upper side of the shearing plane of the horizontal slits. The upper end portion, as located on the lower side of the shearing plane, of the pilfer-proof band is made to have an internal diameter larger than the maximum external diameter of the annular bulging portion which is formed at the container mouth for retaining the pilfer-proof band.

Abstract: To ensure sealing ability of a resealable can container formed of a welded can body between a curled portion of container mouth and a resin sealing liner, without degrading productivity and easiness to open the closure. The can body 2 is prepared by rolling a steel sheet and welding overlapped longitudinal edges of the steel sheet. In order to achieve the above-mentioned objective, a level difference of a welded portion 2a on the surface of a curled portion 21a is reduced smaller than that on the trunk portion 22, specifically, kept within the range of 15 to 100 ?m, and a durometer hardness of the resin sealing liner is kept within the range of HDA 30 to 70 according to ISO 868 (or JIS-K7215).

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: An easy open can lid having: a panel portion, which is formed of an approximate disc shape, and in which a flange portion for fixing a can trunk is formed integrally on an outer circumference; a score line, which is formed near the periphery of the panel portion along the outer circumference of the panel portion; an opening piece, which is defined by the score line; and an opening tab, which is fixed near the periphery of the opening piece. This easy open can lid of the invention is characterized in that the score line is formed of an arcuate along periphery of the panel portion and both ends thereof are separated, and comprises a connecting portion connecting the opening piece with the panel portion, which is formed between the both ends of the score line, and a strength incrementing portion, in which a rupture strength thereof increases gradually toward the end portion of the score line.

Abstract: In forming a can body by processing a cup-shaped in-process material with a punch and a die, the die is not heated when the forming process is not carried out, and the die is heated when the forming process is carried out. Therefore, the temperature of the die is adjusted in accordance with the temperature rise of the punch result from the forming process, a clearance between the punch and the die can be maintained, misalignment of the punch and the die can be prevented, and slip and elongation becomes preferable. Therefore, nonuniformity in the wall thickness, breakage of the can body, and breakage of a flange can be suppressed.

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 metallic pilfer-proof cap, in which the skirt of a skirt portion of a cap can be so separated by a weakening portion having horizontal slits and bridges formed alternately in the circumferential direction of the cap that the skirt may be left in a ring shape as a pilfer-proof band on the side of a container mouth. The horizontal slits formed by shearing in the transverse direction from the outside to leave the bridges are offset radially more inward of the cap at the portion above a shearing plane than at the portion below the shearing plane so that the bridges are formed on the upper side of the shearing plane of the horizontal slits. The upper end portion, as located on the lower side of the shearing plane, of the pilfer-proof band is made to have an internal diameter larger than the maximum external diameter of the annular bulging portion which is formed at the container mouth for retaining the pilfer-proof band.

Abstract: A liquefied gas dispensing nozzle having a cylinder with its axis in a vertical direction, and a plug to be inserted into the cylinder from above as its main elements. A plurality of slit portions for letting through the liquefied gas are formed in parallel in an axial direction of the cylinder from the upper end to the lower end in an inner circumferential face of the cylinder contacting to an outer circumferential face of the plug. A width of at least one or more pair of mutually opposed slit portions is generally constant from its upper end to lower end and its slit bottom is inclined so that the depth of the slit becomes gradually shallower from upper end to lower end. Each slit portion of the cylinder is closed with the plug when the plug, which is movable vertically relative to the cylinder, reaches the lowest end position. A rounded portion formed by rounding a corner portion of the lower end of the slit portion includes an inclined slit bottom.

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.