A heat sealed lid includes: a resin laminate aluminum foil; and a first seamed side frame portion and a second seamed side frame portion formed of a resin film laminate metal sheet, in which the resin film laminate metal sheet includes a metal sheet, a laminate film formed on one surface of the metal sheet, and a second resin film formed on the other surface of the metal sheet and containing a thermoplastic polyester resin, the laminate film includes an adhesion layer containing a polypropylene-based resin and a polyethylene-based resin and a base layer containing a modified polypropylene-based resin, an amount of the polyethylene-based resin in the adhesion layer is 1.0 mass % or more and 45.0 mass % or less of the resins of the adhesion layer, the melting point of the second resin film is higher than the melting point of the adhesion layer by 40° C. or more and is higher than the heating temperature of a heat sealing tool, the thickness of the adhesion layer is 1.0 μm or more and 15.0 μm or less, and the thickness of the base layer is 1.0 μm or more and 18.0 μm or less.

A reclosable beverage can end (10) has a circumferential curl (14) centered about a center longitudinal axis (50). A circumferential wall (15) extends downwardly from the curl (14) and inwardly towards the longitudinal axis (50). A center panel (12) is produced from a metallic material and centered about the longitudinal axis (50). The center panel (12) has a public side (34) and an opposing product side (35). A tab (26) is mounted to the public side (34) of the center panel (12). A pour opening (20) is formed by an aperture in the center panel (12) and sealed by the tab (26). The pour opening (20) is at least partially defined by a pour opening curl (22) of the metallic material of the center panel (12).

A heat sealed lid includes: a resin laminate aluminum foil; and a first seamed side frame portion and a second seamed side frame portion formed of a resin film laminate metal sheet, in which the resin film laminate metal sheet includes a metal sheet, a laminate film formed on one surface of the metal sheet, and a second resin film formed on the other surface of the metal sheet and containing a thermoplastic polyester resin, the laminate film includes an adhesion layer containing a polypropylene-based resin and a polyethylene-based resin and a base layer containing a modified polypropylene-based resin, an amount of the polyethylene-based resin in the adhesion layer is 1.0 mass % or more and 45.0 mass % or less of the resins of the adhesion layer, the melting point of the second resin film is higher than the melting point of the adhesion layer by 40 C. or more and is higher than the heating temperature of a heat sealing tool, the thickness of the adhesion layer is 1.0 m or more and 15.0 m or less, and the thickness of the base layer is 1.0 m or more and 18.0 m or less.

A lid ring (7) for sterilizable containers (1) is proposed which is formed from a metal ring (40) coated on both sides with at least one plastic layer (37, 43), a radially outer cut edge and a radially inner flange (31). The radially inner flange (31) is folded back on itself at least once.

Expandable containers having lids for providing headspace control in food can are disclosed. In one embodiment, a process for producing a lid closure for cans containing foodstuff, the lid providing tightness during sterilization or pasteurization in a continuous autoclave, said cans being closed with a can closure may include (1) producing the can closure from an annular ring adapted for seaming to the can body and a lid panel having an outer ring band sealingly affixed onto an inner flat web; and (2) reshaping a central area of the lid panel by deep drawing to a smooth bowl shape or a dome shape with a plane surface, as original shape, a material of this central area thereby solidified or hardened to such an extent that under an increased pressure in a headspace of the can during a passage thereof through an autoclave station, the central area changes to an axially outwardly bulged shape that is mirror-inverted with respect to the original shape and, during a subsequent cooling of the can, the central area automatically returns substantially to the original shape thereof. The reshaping may be done prior to attaching the lid to the filled can, and the lid pane may be limited by an outer ring band.

The invention relates to lids for cans for receiving foodstuff which are to be subjected to a thermal treatment above 50 C. as sterilization or at least pasteurization. The lid (1) has an annular ring (2) seamable to the can body which ring can be firmly and sealingly connected with the can body rim portion and a cover panel (3) which is sealingly disposed (13) to said ring. The annular ring comprises a flat web (6) that points towards a vertical central axis (8) of the lid and is axially outwardly inclined (11) with respect to a horizontal plane (15). The cover panel (3) is sealed to the flat inclined web by means of a radially outer ring band (3a). A central area (3b) that is surrounded by the ring band is axially inwardly preformed towards an interior in a dome or bowl-shaped fashion and thereby stabilized. After closing of the can, it is subjected to the thermal treatment. Upon a change in pressure (in the closed can) occurring during this thermal treatment the cover panel changes from the preformed position (3b) to an axially outwardly directed bowl/dome-shaped position (3b). After cooling the closed can, the cover panel (3) returnsat least substantially exactlyinto its preformed position.

A reclosable beverage can end (10) has a circumferential curl (14) centered about a center longitudinal axis (50). A circumferential wall (15) extends downwardly from the curl (14) and inwardly towards the longitudinal axis (50). A center panel (12) is produced from a metallic material and centered about the longitudinal axis (50). The center panel (12) has a public side (34) and an opposing product side (35). A tab (26) is mounted to the public side (34) of the center panel (12). A pour opening (20) is formed by an aperture in the center panel (12) and sealed by the tab (26). The pour opening (20) is at least partially defined by a pour opening curl (22) of the metallic material of the center panel (12).

A reclosable beverage can end has a circumferential curl centered about a center longitudinal axis. A circumferential wall extends downwardly from the curl and inwardly towards the longitudinal axis. A center panel is produced from a metallic material and centered about the longitudinal axis. The center panel has a public side and an opposing product side. A tab is mounted to the public side of the center panel. A pour opening is formed by an aperture in the center panel and sealed by the tab. The pour opening is at least partially defined by a pour opening curl of the metallic material of the center panel.