Method for producing an aerosol dome having a dome region with an upwardly adjoining rolled rim arranged at an upper passage opening and with a downwardly adjoining flange region with an everted portion. An intermediate stage is prepared in one or more stages from a lacquer-coated blank (R), the intermediate stage having the upper passage opening, followed downwardly by a neck portion, then followed by the dome region, which is followed by an encircling straight flange. The intermediate stage is processed in a processing stage (S9) in which only the everted portion is formed.

Method for producing an aerosol dome having a dome region with an upwardly adjoining rolled rim arranged at an upper passage opening and with a downwardly adjoining flange region with an everted portion. An intermediate stage is prepared in one or more stages from a lacquer-coated blank (R), the intermediate stage having the upper passage opening, followed downwardly by a neck portion, then followed by the dome region, which is followed by an encircling straight flange. The intermediate stage is processed in a processing stage (S9) in which only the everted portion is formed.

Methods and apparatus for forming a metallic dome are provided. More specifically, the present invention relates to a metallic dome that may be used to seal an aerosol container. The metallic dome includes a novel flattened relief panel and an inwardly oriented arch configured to deform in response to pressure within the aerosol container exceeding a predetermined amount. In one embodiment, the flattened relief panel is substantially planar. Optionally, the metallic dome includes at least a first inwardly oriented arch with a first radius of curvature and a second inwardly oriented arch with a second radius of curvature.

Methods and apparatus for forming a metallic dome are provided. More specifically, the present invention relates to a metallic dome that may be used to seal an aerosol container. The metallic dome includes a novel flattened relief panel and an inwardly oriented arch configured to deform in response to pressure within the aerosol container exceeding a predetermined amount. In one embodiment, the flattened relief panel is substantially planar. Optionally, the metallic dome includes at least a first inwardly oriented arch with a first radius of curvature and a second inwardly oriented arch with a second radius of curvature.

The present invention provides a method of explosively forming a helical tube from at least one thin-walled cylinder using a tooling assembly. The method includes inserting the at least one thin-walled cylinder into a die of the tooling assembly. The die surrounds the at least one thin-walled cylinder and includes an interior surface that defines a helical thread pattern. The method further includes surrounding the at least one thin-walled cylinder and the die with a casing of the tooling assembly. A cavity is defined by the casing and the thin-walled cylinder. The method further includes positioning an explosive charge within the cavity. The method additionally includes at least partially submerging the tooling assembly. The method further includes detonating the explosive charge. As a result, the at least one thin-walled cylinder is formed into a helical tube that corresponds with helical thread pattern of the interior surface of the die.

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 (α) 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.

The present invention provides a method of explosively forming a helical tube from at least one thin-walled cylinder using a tooling assembly. The method includes inserting the at least one thin-walled cylinder into a die of the tooling assembly. The die surrounds the at least one thin-walled cylinder and includes an interior surface that defines a helical thread pattern. The method further includes surrounding the at least one thin-walled cylinder and the die with a casing of the tooling assembly. A cavity is defined by the casing and the thin-walled cylinder. The method further includes positioning an explosive charge within the cavity. The method additionally includes at least partially submerging the tooling assembly. The method further includes detonating the explosive charge. As a result, the at least one thin-walled cylinder is formed into a helical tube that corresponds with helical thread pattern of the interior surface of the die.

Method and installation for manufacturing and inspecting metal containers. The method includes extruding a metal disk to form a metal container having a cylindrical body with a side wall, a base, and an open end opposite the base. After the metal container is formed the thickness of the base is determined by arranging the base between an X-ray emitter and an X-ray receiver and emitting X-rays from the X-ray emitter to the X-ray receiver through the base. The thickness of the base is determined based on the intensity of the X-rays absorbed by the base.

A bottle can made of aluminum alloy has a base portion; a cylindrical body portion connected to an upper end of the base portion; a reduced diameter portion where a diameter reduces from an upper end of the cylindrical body portion to an upper side; a neck portion provided at an upper side of the reduced diameter portion; and a mouth portion having a male thread portion and a bulge portion provided at an upper side of the neck portion. The reduced diameter portion has: a convex curved portion continuing to the upper end of the cylindrical body portion; a concave curved portion continuing to an upper end of the convex curved portion; a lower convex portion continuing to an upper end of the concave curved portion; and an upper concave portion continuing an upper end of the lower convex portion and a lower end of the neck portion.

A bottle can made of aluminum alloy has a base portion; a cylindrical body portion connected to an upper end of the base portion; a reduced diameter portion where a diameter reduces from an upper end of the cylindrical body portion to an upper side; a neck portion provided at an upper side of the reduced diameter portion; and a mouth portion having a male thread portion and a bulge portion provided at an upper side of the neck portion. The reduced diameter portion has: a convex curved portion continuing to the upper end of the cylindrical body portion; a concave curved portion continuing to an upper end of the convex curved portion; a lower convex portion continuing to an upper end of the concave curved portion; and an upper concave portion continuing an upper end of the lower convex portion and a lower end of the neck portion.