IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0351491
(2009-01-09)
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등록번호 |
US-8342344
(2013-01-01)
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발명자
/ 주소 |
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출원인 / 주소 |
- Amcor Rigid Plastics USA, Inc.
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대리인 / 주소 |
McDermott Will & Emery LLP
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인용정보 |
피인용 횟수 :
0 인용 특허 :
57 |
초록
The present invention is directed to a method and apparatus for accommodating the pressure decrease of the fluid in a hot-filled plastic container.
대표청구항
▼
1. A cap adapted for selective interconnection to a neck of a plastic container, comprising: a main panel with a threaded circumferential sidewall extending therefrom;at least one fin extending from said main panel and operably spaced from said sidewall, said at least one fin further comprising at l
1. A cap adapted for selective interconnection to a neck of a plastic container, comprising: a main panel with a threaded circumferential sidewall extending therefrom;at least one fin extending from said main panel and operably spaced from said sidewall, said at least one fin further comprising at least one opening to allow the ingress and egress of ambient air during the closure of said cap;a diaphragm having a head with an inner skirt extending therefrom that is interconnected, via a convolution, to an outer skirt, said outer skirt interconnected to a seal that is positioned between said sidewall and said at least one fin and which is adapted to engage an upper edge of the neck of the container;wherein as said cap is rotated onto said neck of said container air is trapped below said diaphragm to create a positive pressure in a headspace of said container; andwherein said head of said diaphragm moves from a first position substantially adjacent to said main panel to a second extended position away from said main panel when a fluid within the container is cooled a predetermined amount. 2. The closure cap of claim 1, further comprising a catch ring interconnected to said seal that is adapted to move between a free end of said at least one fin and said main panel. 3. The closure cap of claim 1, further comprising a frangible band interconnected to said sidewall to indicate whether a seal between the cap and the container has been compromised. 4. The closure cap of claim 1, further comprising a disk interconnected to said head of said diaphragm, said disk having a stiffness greater than said diaphragm. 5. The closure cap of claim 2, wherein said catch ring includes at least one passageway that allows ambient air to pass from a space between said sidewall and said neck to a volume positioned above said diaphragm. 6. The closure cap of claim 2, wherein said at least one fin includes an upper catch positioned adjacent to said main panel and a lower catch positioned adjacent to said free end wherein prior to positioning said cap onto said neck, said catch ring is engaged onto said lower catch and subsequent to sealing said cap onto said neck, said catch ring is engaged adjacent to said upper catch. 7. The closure cap of claim 1, wherein said at least one fin comprises a plurality of fins with spaces positioned therebetween that define openings that allows the ingress and egress of ambient air. 8. The closure cap of claim 1, wherein said diaphragm is comprised of an impermeable material. 9. A closure system adapted to substantially reduce the vacuum pressure in a hot fill plastic bottle; comprising: a rotatable cap comprised of: a main panel with a threaded circumferential outer wall extending therefrom;an inner wall extending from said main panel and spaced internally from said outer wall that includes at least one passageway which allows the ingress of ambient air below said main panel;a diaphragm having a perimeter edge operably engaged to a catch ring and adapted to form a seal with an upper edge of a neck of said container, said diaphragm capable of moving between a first position which is substantially adjacent to said main panel and a second expanded position which is located away from said main panel;wherein when said rotatable cap is tightened onto the neck of the container which is filled with a fluid at a first temperature, a seal is formed on an upper surface of the neck of the container wherein air is trapped within a headspace volume in the container and compressed to increase the internal pressure within the container; and wherein said at least one passageway allows the ingress of ambient air and expansion of said diaphragm from first position to a second position in response to the cooling of the liquid in the container to substantially prevent a vacuum within the container. 10. The closure system of claim 9, wherein said diaphragm comprises a head with an inner skirt extending therefrom that is interconnected, via a convolution, to an outer skirt, said outer skirt interconnected to an outwardly extending seal that is positioned between said outer wall and said inner wall. 11. The closure system of claim 9, further comprising a catch ring interconnected to said seal that is adapted to move between a free end of said inner wall and said main panel. 12. The closure system of claim 11, wherein said catch ring includes at least one passageway that allows gas to pass from a space between said sidewall and said neck to the inside of the container above said diaphragm. 13. The closure system of claim 9, further comprising a tamper evidence band interconnected to said outer wall. 14. A flexible, non-metallic hot fill beverage container and associated reclosable cap, comprising: a container body having a base, a sidewall connected to said base and a neck interconnected to an upper portion of the sidewall;a closure cap for selective interconnection to said neck of the plastic container, comprising:a main panel with a threaded sidewall extending therefrom;at least one fin extending from said main panel and operably spaced from said sidewall, said at least one fin forming a passageway to allow the ingress of ambient air; a diaphragm having a head with an inner skirt extending therefrom that is interconnected to an outer skirt, said outer skirt interconnected on a perimeter edge to an outwardly extending seal that is positioned between said neck of said container and said at least one fin;wherein as said cap is rotated onto said neck of said container air is trapped below said diaphragm to create a positive pressure in a headspace of said container; andwherein said head of said diaphragm moves from a first position located adjacent to said main panel to a second position located away from said main panel when a temperature of a fluid in the container is reduced a sufficient amount. 15. The beverage container of claim 14, wherein said container body is made of a plastic material. 16. The beverage container of claim 14, further comprising a catch ring interconnected to said seal that is adapted to move between a free end of said at least one fin and said main panel. 17. The beverage container of claim 16, wherein said catch ring includes at least one passageway that allows ambient air to pass from a space between said sidewall and said neck to a space below said main panel and above said diaphragm. 18. The beverage container of claim 14, further comprising a tamper evidence band interconnected to said sidewall of said reclosable cap. 19. The beverage container of claim 14, further comprising a disk interconnected to said head of said diaphragm, said disk having a rigidity greater than said diaphragm. 20. The beverage container of claim 14, wherein said at least one fin includes an upper catch positioned adjacent to said main panel and a lower catch positioned adjacent to said free end wherein prior to positioning said cap onto said neck, said catch ring is engaged onto said lower catch and subsequent to sealing said cap onto said neck, said catch ring is engaged adjacent to said upper catch. 21. The beverage container of claim 14, wherein pressure in the headspace of the container is increased as the closure cap is rotated and forced downward onto the neck of the container. 22. A closure system adapted to substantially reduce the vacuum pressure in a hot fill plastic bottle; comprising: a rotatable cap comprised of: a main panel with a threaded circumferential outer wall extending therefrom;an inner wall extending from said main panel and spaced internally from said outer wall that includes at least one passageway which allows the ingress of ambient air below said main panel;a diaphragm having a perimeter edge operably engaged to a catch ring and adapted to form a seal with an upper edge of a neck of said container, said diaphragm capable of moving between a first position which is substantially adjacent to said main panel and a second expanded position which is located away from said main panel;wherein when said rotatable cap is tightened onto the neck of the container which is filled with a fluid at a first temperature, a seal is formed on an upper surface of the neck of the container wherein air is trapped within a headspace volume in the container;wherein said at least one passageway allows the ingress of ambient air and expansion of said diaphragm from first position to a second position in response to the cooling of the liquid in the container to substantially prevent a vacuum within the container; andwherein the catch ring is interconnected to said seal that is adapted to move between a free end of said inner wall and said main panel. 23. A closure system adapted to substantially reduce the vacuum pressure in a hot fill plastic bottle; comprising: a rotatable cap comprised of: a main panel with a threaded circumferential outer wall extending therefrom;an inner wall extending from said main panel and spaced internally from said outer wall that includes at least one passageway which allows the ingress of ambient air below said main panel;a diaphragm having a perimeter edge operably engaged to a catch ring and adapted to form a seal with an upper edge of a neck of said container, said diaphragm capable of moving between a first position which is substantially adjacent to said main panel and a second expanded position which is located away from said main panel;wherein when said rotatable cap is tightened onto the neck of the container which is filled with a fluid at a first temperature, a seal is formed on an upper surface of the neck of the container wherein air is trapped within a headspace volume in the container;wherein said at least one passageway allows the ingress of ambient air and expansion of said diaphragm from first position to a second position in response to the cooling of the liquid in the container to substantially prevent a vacuum within the container; andwherein the catch ring includes at least one passageway that allows gas to pass from a space between said sidewall and said neck to the inside of the container above said diaphragm. 24. A closure system adapted to substantially reduce the vacuum pressure in a hot fill plastic bottle; comprising: a rotatable cap comprised of: a main panel with a threaded circumferential outer wall extending therefrom;an inner wall extending from said main panel and spaced internally from said outer wall that includes at least one passageway which allows the ingress of ambient air below said main panel;a diaphragm having a head and a perimeter edge operably engaged to a catch ring and adapted to form a seal with an upper edge of a neck of said container, said diaphragm capable of moving between a first position which is substantially adjacent to said main panel and a second expanded position which is located away from said main panel;a disk interconnected to said head of said diaphragm, said disk having a stiffness greater than said diaphragm;wherein when said rotatable cap is tightened onto the neck of the container which is filled with a fluid at a first temperature, a seal is formed on an upper surface of the neck of the container wherein air is trapped within a headspace volume in the container; andwherein said at least one passageway allows the ingress of ambient air and expansion of said diaphragm from first position to a second position in response to the cooling of the liquid in the container to substantially prevent a vacuum within the container. 25. A closure system adapted to substantially reduce the vacuum pressure in a hot fill plastic bottle; comprising: a rotatable cap comprised of: a main panel with a threaded circumferential outer wall extending therefrom;an inner wall extending from said main panel and spaced internally from said outer wall that includes at least one fin having a free end and defining at least one passageway which allows the ingress of ambient air below said main panel;a diaphragm having a perimeter edge operably engaged to a catch ring and adapted to form a seal with an upper edge of a neck of said container, said diaphragm capable of moving between a first position which is substantially adjacent to said main panel and a second expanded position which is located away from said main panel;wherein said at least one fin includes an upper catch positioned adjacent to said main panel and a lower catch positioned adjacent to said free end wherein prior to positioning said cap onto said neck, said catch ring is engaged onto said lower catch and subsequent to sealing said cap onto said neck, said catch ring is engaged adjacent to said upper catch;wherein when said rotatable cap is tightened onto the neck of the container which is filled with a fluid at a first temperature, a seal is formed on an upper surface of the neck of the container wherein air is trapped within a headspace volume in the container; andwherein said at least one passageway allows the ingress of ambient air and expansion of said diaphragm from first position to a second position in response to the cooling of the liquid in the container to substantially prevent a vacuum within the container.
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