Retortable package with plastic closure cap
First Claim
Patent Images
1. A composite closure cap for a container comprising:
- a plastic shell including a generally inwardly extending annular top flange and a radially outer, downwardly depending skirt extending from said flange, said inwardly extending flange defining a central opening in said shell;
an end panel held within said shell, said end panel including a top surface and a bottom surface, said end panel comprising (a) a central portion covering said central opening, (b) a generally upwardly extending portion extending from said central portion and (c) terminating in a radially, outer peripheral portion, said generally upwardly extending portion having a lower end adjacent to said central portion and an upper end adjacent to said radially outer peripheral portion, wherein the bottom surface of said end panel of said generally upwardly extending portion and of said radially outer peripheral portion provides a liner receiving surface;
wherein said bottom surface of said outer peripheral portion is substantially perpendicular to said skirt;
a liner molded onto said liner receiving surface, said liner having a finish contacting outer surface, wherein said finish contacting outer surface has a generally toroidal-like surface profile prior to contact with a container finish, wherein said liner has a thickness that is increased where said liner is in contact with said lower end of said generally upwardly extending portion of said end panel relative to where said liner is in contact with said upwardly extending portion between said upper and lower ends thereof.
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Accused Products
Abstract
Retortable packages including plastic closure caps are disclosed. The closure cap includes an end panel and a liner applied to the end panel. The finish contacting surface of the liner has a profile that is generally arc-shaped or torroidal-like prior to contact with the finish.
157 Citations
22 Claims
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1. A composite closure cap for a container comprising:
- a plastic shell including a generally inwardly extending annular top flange and a radially outer, downwardly depending skirt extending from said flange, said inwardly extending flange defining a central opening in said shell;
an end panel held within said shell, said end panel including a top surface and a bottom surface, said end panel comprising (a) a central portion covering said central opening, (b) a generally upwardly extending portion extending from said central portion and (c) terminating in a radially, outer peripheral portion, said generally upwardly extending portion having a lower end adjacent to said central portion and an upper end adjacent to said radially outer peripheral portion, wherein the bottom surface of said end panel of said generally upwardly extending portion and of said radially outer peripheral portion provides a liner receiving surface; wherein said bottom surface of said outer peripheral portion is substantially perpendicular to said skirt; a liner molded onto said liner receiving surface, said liner having a finish contacting outer surface, wherein said finish contacting outer surface has a generally toroidal-like surface profile prior to contact with a container finish, wherein said liner has a thickness that is increased where said liner is in contact with said lower end of said generally upwardly extending portion of said end panel relative to where said liner is in contact with said upwardly extending portion between said upper and lower ends thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a plastic shell including a generally inwardly extending annular top flange and a radially outer, downwardly depending skirt extending from said flange, said inwardly extending flange defining a central opening in said shell;
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10. A closure cap for a container comprising:
- a plastic shell including a generally inwardly extending annular top flange and a radially outer, downwardly depending skirt extending from said flange, said inwardly extending flange defining a central opening in said shell;
an at least substantially plastic end panel held within said shell, said end panel including a top surface and a bottom surface, said end panel comprising a central portion, a radially outer peripheral portion and a downwardly depending plug between the central and peripheral portion, the plug including a radially outer surface; a liner applied primarily to at least a portion of said radially outer surface of said plug and at least a portion of said radially outer peripheral portion, said liner having a finish contacting outer surface, wherein said finish contacting outer surface has a generally toroidal-like surface profile prior to contact with a container finish, and wherein a portion of said liner applied at the juncture of the plug with the radially outer peripheral portion of said end panel has an increased thickness relative to a portion of said liner applied to the plug at a location spaced from said juncture. - View Dependent Claims (11, 12, 13, 14)
- a plastic shell including a generally inwardly extending annular top flange and a radially outer, downwardly depending skirt extending from said flange, said inwardly extending flange defining a central opening in said shell;
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15. A closure cap for a container comprising:
- a plastic shell including a generally inwardly extending annular top flange and a radially outer, downwardly depending skirt extending from said flange, said inwardly extending flange defining a central opening in said shell;
an at least substantially plastic end panel held within said shell, said end panel including a top surface and a bottom surface, said end panel comprising a central portion, a radially outer peripheral portion and a downwardly depending plug between the central and peripheral portion, the plug including a radially outer surface; a liner applied to said radially outer surface of said plug, said liner having a finish contacting outer surface, wherein said finish contacting outer surface has a generally toroidal-like surface profile prior to contact with a container finish, and wherein a portion of said liner applied at the juncture of the plug with the radially outer peripheral portion of said end panel has an increased thickness relative to a portion of said liner applied to the plug at a location spaced from said juncture; wherein said plug outer surface has an angle relative to a vertical axis of approximately 10°
-20°
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- a plastic shell including a generally inwardly extending annular top flange and a radially outer, downwardly depending skirt extending from said flange, said inwardly extending flange defining a central opening in said shell;
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16. A package comprising:
- a container including a container finish, said finish including an inner sealing surface and a top sealing surface and an outer surface, a closure cap comprising a plastic shell and an end panel, said end panel having a top surface and a bottom surface, said bottom surface comprising a portion having a liner applied thereon;
wherein said inner sealing surface of said container finish comprises a generally toroidal-like surface; said liner including an outer, finish-contacting surface that has a generally toroidal-like surface profile prior to contact with said container finish and including a portion of increased thickness relative to the remainder of said liner; and a seal formed between said closure and said container, primarily at said inner and top sealing surfaces of said container. - View Dependent Claims (17, 18)
- a container including a container finish, said finish including an inner sealing surface and a top sealing surface and an outer surface, a closure cap comprising a plastic shell and an end panel, said end panel having a top surface and a bottom surface, said bottom surface comprising a portion having a liner applied thereon;
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19. A package comprising:
- a container including a container finish, said finish including an inner sealing surface and a top sealing surface and an outer surface, a closure cap comprising a plastic shell and an end panel, said end panel having a top surface and a bottom surface, said bottom surface comprising a portion having a liner applied thereon;
said end panel comprising a central portion and a radially outer peripheral portion and an intermediate portion extending generally upwardly from said central portion; said liner including an outer, finish contacting surface that has a generally toroidal-like surface profile prior to contact with said container finish and including a portion of increased thickness where said liner is in contact with a lower end of said generally upwardly extending portion relative to the remainder of said liner; and a seal formed between said closure and said container, primarily at said inner and top sealing surfaces of said container. - View Dependent Claims (20, 21)
- a container including a container finish, said finish including an inner sealing surface and a top sealing surface and an outer surface, a closure cap comprising a plastic shell and an end panel, said end panel having a top surface and a bottom surface, said bottom surface comprising a portion having a liner applied thereon;
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22. A package comprising:
- a container including a container finish, said finish including an inner sealing surface and a top sealing surface and an outer surface, a closure cap comprising a plastic shell and an end panel, said end panel having a central portion and a radially outer peripheral portion, a top surface and a bottom surface, said bottom surface comprising a portion having a liner applied thereon;
said end panel comprising a plug depending downwardly from said bottom surface of said end panel relative to said central and outer peripheral portions; said liner including an outer, finish contacting surface that has a generally toroidal-like surface profile including a portion of increased thickness relative to the remainder of said liner prior to contact with said container finish; and a seal formed between said closure and said container, primarily at said inner and top sealing surfaces of said container.
- a container including a container finish, said finish including an inner sealing surface and a top sealing surface and an outer surface, a closure cap comprising a plastic shell and an end panel, said end panel having a central portion and a radially outer peripheral portion, a top surface and a bottom surface, said bottom surface comprising a portion having a liner applied thereon;
Specification