A tool for curling of can necks as part of a tool plate that includes an expansion control device for controlling of the spreading of a collet, a collet clutch, an interconnecting means provided with a stop mechanism, and a holder being fixed in the collet clutch at its one end, the collet being arranged on its other end, the collet in the non-active position being insertable into the can to permit segments of the collet to spread in the direction of the device.

The invention relates to a method for producing a rolled edge from a cylindrical edge portion (11) of a pipe. In the method, a starting zone (14) of the edge portion (11) is rolled by a forcibly controlled tool (30). A flanging die (21) then advances into the rolled edge portion (11) and flanges the rolled edge portion into a roll (12). The method according to the invention is characterized in that the starting zone (14) of the edge portion (11) is folded over by the tool (30), which comprises a folding die (37) and counterholder (34), at an angle () in the range from 75-105 from the axial direction (45) into a substantially radially peripheral flange (41). The invention further relates to elements, in particular in the forme of an aerosol dome, having such rolled edges.

A method is described for making a retort container having one or two metal ends. A heat-sealable material is present on one or both of the container side wall and the/each metal end. The/each metal end is seamed onto the container body, and the resulting container assembly is conveyed on a conveyor adjacent to an induction sealing head and then adjacent to a cooling device. A pressure belt engages the upper end of the container assembly to keep the metal end from coming off the container body during the induction heating and cooling processes.

A method is described for making a retort container having one or two metal ends. A heat-sealable material is present on one or both of the container side wall and the/each metal end. The/each metal end is seamed onto the container body, and the resulting container assembly is conveyed on a conveyor adjacent to an induction sealing head and then adjacent to a cooling device. A pressure belt engages the upper end of the container assembly to keep the metal end from coming off the container body during the induction heating and cooling processes.

A method for forming a curl on an open end of a metal container, for adapting the metal bottle to be closed by a cap, comprising in sequence: inserting the open end of the metal container into a powered first curler roller housing, wherein the first curler roller housing houses a set of first curler rollers, to deform the open end by turning it outwardly so as to obtain a first stage curl; inserting the open end of the metal container having the first stage curl into a powered second curler roller housing, wherein the second curler roller housing houses a set of second curler rollers, to further deform the open end and first stage curl by turning them outwardly and/or curling them so as to obtain a second stage curl; inserting the open end of the metal container or bottle having the second stage curl into a powered third curler roller housing, wherein the third curler roller housing houses a set of third curler rollers, to further deform the open end and second stage curl by turning them outwardly, curling them and/or compressing the second stage curl radially and/or longitudinally downward towards a bottom of the metal container so as to obtain a third stage curl.

A shell includes a body with a center panel, a countersink, a chuck wall, and a draw-stretched outer portion. The countersink has a base thickness. The outer portion has a reduced thickness. The shell countersink has substantially the same thickness as the sheet material prior to forming. In this configuration, the shell maintains the buckle resistance of a standard shell but uses less material.

A method is described for making a retort container having one or two metal ends. A heat-sealable material is present on one or both of the container side wall and the/each metal end. The/each metal end is seamed onto the container body, and the resulting container assembly is conveyed on a conveyor adjacent to an induction sealing head and then adjacent to a cooling device. A pressure belt engages the upper end of the container assembly to keep the metal end from coming off the container body during the induction heating and cooling processes.

A method for manufacturing a metal bottle having a mouthpiece in an upper part of a bottomed cylindrical bottle body, including forming a screw part on the mouthpiece and then forming a curl at a tip of the mouthpiece. During formation of the screw part, a height of the first-stage screw thread from a tip side in a complete screw part and a height of the second-stage screw thread from the tip side are substantially equal and a distance between an apex part of the first-stage screw thread and a bottle axis is smaller than a distance between the apex part of the second-stage screw thread and the bottle axis. After formation of the curl, a distance between the apex part of the first-stage screw thread and the bottle axis and a distance between the apex part of the second-stage screw thread and the bottle axis are substantially equal.

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.

A method is described for making a retort container having one or two metal ends. A heat-sealable material is present on one or both of the container side wall and the/each metal end. The/each metal end is seamed onto the container body, and the resulting container assembly is conveyed on a conveyor adjacent to an induction sealing head and then adjacent to a cooling device. A pressure belt engages the upper end of the container assembly to keep the metal end from coming off the container body during the induction heating and cooling processes.