Composite closure with barrier end panel
First Claim
Patent Images
1. A composite closure cap for a container comprising:
- an end panel disk made substantially of one or more plastic materials and having oxygen barrier properties, said disk including upper and lower surfaces, and a central portion and an outer peripheral portion terminating in an outer edge;
a shell including a cylindrical, downwardly extending skirt and an annular top flange overlying and in contact with the upper surface of said outer peripheral portion of said disk;
a sealing liner on at least the outer peripheral portion of said lower surface of said disk.
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Accused Products
Abstract
Composite closures for plastic containers are disclosed. The composite closures include an end panel with oxygen barrier properties. The liner includes a sealing liner or gasket for sealing engagement with a container finish.
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Citations
45 Claims
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1. A composite closure cap for a container comprising:
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an end panel disk made substantially of one or more plastic materials and having oxygen barrier properties, said disk including upper and lower surfaces, and a central portion and an outer peripheral portion terminating in an outer edge;
a shell including a cylindrical, downwardly extending skirt and an annular top flange overlying and in contact with the upper surface of said outer peripheral portion of said disk;
a sealing liner on at least the outer peripheral portion of said lower surface of said disk. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A composite closure cap for a container comprising:
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an end panel disk made substantially of one or more plastic materials and having oxygen barrier properties, said disk including a upper and lower surfaces, and a central portion and an outer peripheral portion terminating in an outer edge;
a shell including a cylindrical, downwardly extending skirt including an annular top flange including a top surface a bottom surface and a radially inner surface between said top and bottom surfaces, said flange overlying at least the outer peripheral portion of said disk such that said bottom surface of said flange is in contact with the upper surface of said outer peripheral portion of said disk;
wherein at least part of said disk upper surface is exposed to the outside environment; and
a sealing liner on at least the outer peripheral portion of said lower surface of said disk. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A composite closure cap for a container comprising:
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a shell including a downwardly extending skirt portion and an annular top flange, said flange including a top surface and a bottom surface wherein at least said bottom surface of said flange has a generally C-shaped profile whereby said flange bottom surface includes a radially inner downwardly extending inner portion, a radially outer downwardly extending portion and a curved portion between said radially inner and outer portions;
said end panel disk made substantially of one or more plastic materials and having oxygen barrier properties, said disk including upper and lower surfaces, and a central portion and an outer peripheral portion terminating in a free edge, wherein said outer peripheral portion of said disk is substantially conformed to and in contact with at least said downwardly extending and curved top portions of said flange bottom surface; and
a sealing liner on at least the outer peripheral portion of said lower surface of said disk where said disk is substantially conformed to said radially downwardly extending and curved top portions of said flange bottom surface. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method of making a composite closure cap comprising:
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molding an outer plastic shell including a cylindrical skirt and an annular top flange, said skirt defining a central mouth and said flange having a top surface, a bottom surface and a generally C-shaped cross-section profile whereby said bottom surface includes a radially downwardly extending inner portion, a radially downwardly outer portion, a curved portion between said radially inner and outer portions;
providing a circular disk having a top surface and a bottom surface, said disk including a central portion and a outer peripheral portion;
applying a sealant material to at least the outer peripheral portion of said disk bottom surface;
introducing said disk into said shell through said central mouth. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
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43. A composite closure cap for a container comprising:
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an end panel disc substantially made of one or more plastic materials and having oxygen barrier properties;
a plastic ring including a downwardly extending skirt and upper radially inwardly extending flange, said flange overlying the outer periphery of said disc;
a sealant applied to the bottom surface of said disc. - View Dependent Claims (44, 45)
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Specification