A structure of an opening curled portion of a bottle-shaped can possible to enhance the durability of a curled portion against a load applied from above so as to ensure tamper evidence function. The curled portion 10 comprises: an inner circumferential wall 16; an upper rounded portion 17; an outer circumferential wall 20; a lower rounded portion 21; a folded end 22; and a leading edge 23. A tapered wall 15 is formed below the inner circumferential wall 16 to be joined to a threaded section while increasing an outer diameter thereof downwardly. A margin surface area 24 is formed between the inner circumferential wall 16 and the tapered wall 15, in such a manner as to extend downwardly from a lowest end 25 of a contact area with the folded end 22, to locate a curvature center P2 thereof outside of the neck section, and to set a curvature radius R2 thereof longer than a curvature radius R1 of the lower rounded portion 21 in a cross-section along a center axis O of the neck section.

A gas sampler device has a top plate with a concaved outer wall. The concaved outer wall allows users easily to lift the top plate off of the bottom plate without disturbing the bottom plate because the curved surface permits more positive contact between the outer wall and users' fingers. Moreover, the weight of the top plate is reduced by approximately twenty percent compared to conventional top plates, a feature that also makes it easier for users to lift the top plate off of the bottom plate.

A package made of sheet material with a tear-off foil cover includes a seamless frame (1) produced by deep drawing, which forms a package wall (6) enclosing the interior space of the package. At a first end (T), the frame (1) forms an extraction opening surrounded by a sealing flange (2), which is closed by a tear-off foil cover (3) sealed onto the sealing flange (2). At its other, second end (B), the frame (1) is connected by flanging to a sheet metal cover (4) which forms the package bottom (7). The package can be produced inexpensively with low energy and material consumption from both steel sheet material and aluminum sheet material, has no weld seams, can be tested for leaks before filling, and enables high filling speeds.

Container (1) comprising a substantially tubular metal container body (2) having a top opening defined by an outwardly curled edge, and a bottom opening. The container further comprises a peelable lid (9) bonded to an upper surface of said curled edge to close said top opening in an airtight manner, the outermost edge of the peelable lid not extending beyond an outermost extent of said curled edge, and a metal closure (4) comprising a generally planar centre panel (8) and a downwardly extending sidewall (7) depending from a peripheral region of the centre panel and terminating with an inwardly or outwardly directed fold (12), and a plurality of features (5) pressed into the sidewall at respective circumferentially spaced locations between said peripheral region and the fold, wherein the radial inward extent of the features is greater than that of the fold. The closure and the container body have relative dimensions to allow the features to pass over said curled edge during closure and to be retained beneath the curled edge to resist removal of the closure.

Provided are a metal container and a method for manufacturing same. The metal container includes an opening portion, a sidewall portion, and a bottom portion and has a lower end outer diameter smaller than an upper end inner diameter. The metal container has a shape of a bottomed cup formed by drawing a plate-like metal material and subjected to trimming, the sidewall portion has a tapered profile formed by performing diameter reduction drawing on the bottom portion side with respect to the opening portion of the bottomed cup, and the sidewall portion is formed with a bulging portion bulging in a circumferential direction and a continuous tapered surface where tapered surfaces are formed in a continuous manner by performing diameter reduction drawing a plurality of times on a lower side with respect to the bulging portion.

A gas sampler device has a top plate with a concaved outer wall. The concaved outer wall allows users easily to lift the top plate off of the bottom plate without disturbing the bottom plate because the curved surface permits more positive contact between the outer wall and users' fingers. Moreover, the weight of the top plate is reduced by approximately twenty percent compared to conventional top plates, a feature that also makes it easier for users to lift the top plate off of the bottom plate.

A method is described for expanding a cylindrical metallic precursor in the manufacture of a three-piece can. The method comprises the steps of: arranging the precursor, having an initial diameter, around a shaping mandrel, the shaping mandrel having a plurality of longitudinally extending segments disposed radially about a longitudinal axis of the shaping mandrel, the segments having arcuate surfaces for engaging an inner surface of the precursor wall; actuating, in a first step, a first subgroup of the plurality of segments to expand outwards to engage with the inner surface of the precursor wall and expand at least a portion of it to a first diameter that is larger than the initial diameter of the precursor; and actuating, in a second step, a second subgroup of the plurality of segments to expand outwards and also engage with the inner surface of the precursor wall whereby the second subgroup expands at least a portion of the precursor to a second diameter that is larger than the first diameter. The method allows a greater degree of expansion of the wall of a cylindrical metallic container, whereby greater variations in diameter can be achieved between recessed portions and the remainder of the wall.

Provided is an inexpensive, low-environmental-burden laminated metal sheet and laminated metallic container that have basic properties such as formability, adhesion between the film and the metal sheet, and corrosion resistance, and that do not suffer from degradation in appearance due to whitening even when subjected to retort sterilization treatment. The laminated metal sheet 10 has a first film 31 laminated on at least one of a front surface 21 or a back surface 22 of a metal sheet 20. The first film 31 is homopolyethylene terephthalate or copolymer polyethylene terephthalate, and w(x) obtained by a linearly polarized laser Raman spectroscopic analysis for a cross section of the first film 31 satisfies the following expressions (1) and (2):

[00001]$\begin{array}{cc}{w_{1730}}^{\mathrm{ID}}\left(1.\right)20{\mathrm{cm}}^{-1}& \left(1\right)\end{array}$$\begin{array}{cc}{w_{1730}}^{\mathrm{ND}}\left(1.\right)20{\mathrm{cm}}^{-1}.& \left(2\right)\end{array}$

A punch for drawing beverage cans comprising a cylindrical body with a separated region (1) forming a can side wall having diameter D1, a step (2), and a region (3) forming a thick wall, characterized in that, the region (3) forming thick wall starts from the step (2), and the diameter D2 of the punch in this region (3) is variable and is smaller than the diameter D1 of the region (1) forming can's sidewall. The object of the invention is also a beverage can in the form of a semi-finished can, and a finished beverage can manufactured with use of the said punch.