A liner machine for applying a sealing compound to a can end or lid. The liner machine includes a motor drive dual turret system. The turret system is installed at the top of a table or platform surface and two turrets rotate in opposition directions from one another, simultaneously or independently at same or different times. Each turret includes a plurality of workstations which extend out from each turret facing away from each other. The workstations receive an individual lid, which is delivered via a starwheel from a downstacker to each turret system. Each rotates in a direction that is opposite the direction that its respective turret system rotates, and in a direction that is opposite the direction that the other starwheel rotates. Sealant injectors in the turret systems apply sealant to each lid as the lids rotate around each turret system.

A liner machine for applying a sealing compound to a can end or lid. The liner machine includes a motor drive dual turret system. The turret system is installed at the top of a table or platform surface and two turrets rotate in opposition directions from one another, simultaneously or independently at same or different times. Each turret includes a plurality of workstations which extend out from each turret facing away from each other. The workstations receive an individual lid, which is delivered via a starwheel from a downstacker to each turret system. Each rotates in a direction that is opposite the direction that its respective turret system rotates, and in a direction that is opposite the direction that the other starwheel rotates. Sealant injectors in the turret systems apply sealant to each lid as the lids rotate around each turret system.

A can lid comprises a metallic lid surface in which an opening is formed which is bounded by a closed margin of the lid surface and which is closed by a closure piece. The closure piece is separated from the surrounding lid surface by a microgap extending at least sectionally along the margin of the lid surface. A margin of the closure piece and the margin of the surrounding lid surface adjoin one another at the microgap. The closure piece can be moved out of the plane defined by the opening to release the opening. The can lid further comprises a layer composed of a plastic material applied to a flat side of the metallic lid surface in a manner covering the microgap. The margin of the closure piece and the margin of the surrounding lid surface are offset from one another transversely to the plane defined by the opening.

A can lid comprises a metallic lid surface in which an opening is formed which is bounded by a closed margin of the lid surface and which is closed by a closure piece. The closure piece is separated from the surrounding lid surface by a microgap extending at least sectionally along the margin of the lid surface. A margin of the closure piece and the margin of the surrounding lid surface adjoin one another at the microgap. The closure piece can be moved out of the plane defined by the opening to release the opening. The can lid further comprises a layer composed of a plastic material applied to a flat side of the metallic lid surface in a manner covering the microgap. The margin of the closure piece and the margin of the surrounding lid surface are offset from one another transversely to the plane defined by the opening.

An apparatus includes a tool operable to releasably join a metallic end closure to a metallic container. In one embodiment, the tool is configured to form a thread in the closure and the container. The tool may optionally crimp the closure to the container. Once sealed, the container can be opened by rotating the closure in an opening direction. The closure can subsequently re-close the container by rotating the closure in a closing direction.

An apparatus includes a tool operable to releasably join a metallic end closure to a metallic container. In one embodiment, the tool is configured to form a thread in the closure and the container. The tool may optionally crimp the closure to the container. Once sealed, the container can be opened by rotating the closure in an opening direction. The closure can subsequently re-close the container by rotating the closure in a closing direction.

A cap includes: a cap body including a top plate portion and a cylindrical skirt portion; a sealing member provided in the cap body separately from the cap body so as to face the top plate portion; a plurality of locking portions arranged in a circumferential direction in the skirt portion, the locking portions protruding inward in a radial direction of the skirt portion and supporting the sealing member; a plurality of small diameter portions arranged between the top plate portion and the locking portions of the skirt portion, the small diameter portions being respectively provided on a top plate portion side of the locking portions in the axial direction; and a plurality of large diameter portions provided adjacent to the small diameter portions in the circumferential direction and having an inscribed circle diameter larger than an inscribed circle diameter of the plurality of small diameter portions.

A cap includes: a cap body including a top plate portion and a cylindrical skirt portion; a sealing member provided in the cap body separately from the cap body so as to face the top plate portion; a plurality of locking portions arranged in a circumferential direction in the skirt portion, the locking portions protruding inward in a radial direction of the skirt portion and supporting the sealing member; a plurality of small diameter portions arranged between the top plate portion and the locking portions of the skirt portion, the small diameter portions being respectively provided on a top plate portion side of the locking portions in the axial direction; and a plurality of large diameter portions provided adjacent to the small diameter portions in the circumferential direction and having an inscribed circle diameter larger than an inscribed circle diameter of the plurality of small diameter portions.

A rotary tank assembly is provided for a liner. The liner is structured to apply a compound to a plurality of container closures. The rotary tank assembly includes a compound tank, a fill tube structured to fill the tank with a volume of said compound to a desired level, a sensor assembly adapted to measure the level of said compound within the compound tank, and a rotary union assembly structured to pivotally couple the fill tube and the sensor assembly to the compound tank. The sensor assembly only requires one single probe.

An apparatus includes a tool operable to releasably join a metallic end closure to a metallic container. In one embodiment, the tool is configured to form a thread in the closure and the container. The tool may optionally crimp the closure to the container. Once sealed, the container can be opened by rotating the closure in an opening direction. The closure can subsequently re-close the container by rotating the closure in a closing direction.