IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0964127
(2010-12-09)
|
등록번호 |
US-8726616
(2014-05-20)
|
발명자
/ 주소 |
- Bysick, Scott
- Trude, Gregory A.
|
출원인 / 주소 |
- Graham Packaging Company, L.P.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
197 |
초록
▼
Systems and methods for vacuum compensation in hot-filled and cooled containers. Each container reduces, via one or more vacuum panels, a first portion of a vacuum created in the container. Each container also has a repositionable portion to reduce a second portion of the vacuum. During hot-filling,
Systems and methods for vacuum compensation in hot-filled and cooled containers. Each container reduces, via one or more vacuum panels, a first portion of a vacuum created in the container. Each container also has a repositionable portion to reduce a second portion of the vacuum. During hot-filling, no portion of the repositionable portion extends below a standing or bearing surface of the container.
대표청구항
▼
1. A method of compensating for vacuum pressure changes within a container, the container including a neck portion, a body portion, and a base portion, the base portion forming a bearing surface for the container and having a bottom end thereof with a hinge and a base wall, the base wall being adapt
1. A method of compensating for vacuum pressure changes within a container, the container including a neck portion, a body portion, and a base portion, the base portion forming a bearing surface for the container and having a bottom end thereof with a hinge and a base wall, the base wall being adapted to be repositioned about the hinge from a first position extending outwardly to a second position extending inwardly, the method comprising: hot filling the container with a product;sealing the container with a closure;cooling the hot filled container; andrepositioning the base wall about the hinge from the first position to the second position, thereby reducing the negative internal pressure of the container,wherein prior to said repositioning, the container is adapted to stand upright on a flat surface; andwherein the base wall includes a plurality of creases to facilitate repositioning thereof, the creases being adapted to flex during repositioning of the base wall. 2. The method of claim 1, wherein in the first position no portion of the base wall extends to the bearing surface of the base portion of the container. 3. The method of claim 1, wherein in the first position no portion of the base wall extends past the bearing surface of the base portion of the container. 4. The method of claim 1, wherein said repositioning involves a mechanical device operable to apply a force to the base wall to reposition the base wall from the first position to the second position. 5. The method of claim 1, wherein the second position of the base wall is arranged more toward the interior of container than the first position. 6. The method of claim 1, wherein the first position extends to a position coplanar with the bearing surface but no lower. 7. A system for handling filled containers, each said container including a neck portion, a body portion, and a base portion, the base portion forming a bearing surface for the container and having a bottom end thereof with a hinge element, a base wall having a first wall portion and a second wall portion, and a section circumscribed by the second wall portion, the second wall portion and the section being adapted to be repositioned about the hinge element from a first position extending outwardly to a second position extending inwardly with substantially no movement of the first wall portion during the repositioning, the system comprising: filling means for filling the containers with a product, the product being at an elevated temperature;sealing means for sealing the filled containers using a cap;vacuum creating means for creating a vacuum in each of the filled and sealed containers by cooling;conveying means for conveying the containers having vacuums created therein with the second wall portion and the section in a first position, the containers being conveyed such that their bearing surfaces stand on a flat surface, wherein, in the first position, no portion of the second wall portion and the section extend below the bearing surface of the base portion of the container; andrepositioning means for repositioning the second wall portion and the section of each container from the first position to a second position partially to reduce the vacuum, the repositioning being done after the containers are conveyed by said conveying means,wherein the second wall portion includes a plurality of creases to facilitate repositioning thereof, the creases being adapted to flex during repositioning of the second wall portion. 8. The system of claim 7, wherein, in the first position, no portion of the second wall portion and the section extend to the bearing surface of the base portion of the container. 9. The system of claim 7, wherein said repositioning means is a mechanical device operable to apply a force to the section to reposition the second wall portion and the section from the first position to the second position. 10. The system of claim 7, wherein, the second position of the section is arranged more toward the interior of container than the first position. 11. The system of claim 7, wherein, in the first position, a portion of the section is coplanar with the bearing surface. 12. A method for handling a plastic container comprising: hot-filling the plastic container, the plastic container including a body and a base, the base forming a standing surface for the plastic container and including a bottom end with a moveable element, the moveable element being adapted to be inverted and including a plurality of creases to facilitate the inverting, the creases being adapted to flex during the inverting;capping the hot-filled plastic container;creating an internal vacuum in the hot-filled and capped plastic container by cooling;transporting the plastic container having an internal vacuum; andinverting the moveable element from a first position extending outwardly to a second position extending inwardly to reduce the internal vacuum. 13. The method of claim 12, wherein during said hot filling, said capping, said creating a vacuum, said transporting, and said inverting, the moveable element is above the standing surface at all times. 14. The method of claim 12, wherein during said hot filling, said capping, said creating a vacuum, said transporting, and said inverting, the moveable element does not extend below the standing surface. 15. The method of claim 12, wherein the bottom end of the base further includes a non moveable element and a hinge element, the non-moveable element sloping in a direction from the standing surface to the moveable element toward the interior of the container and circumscribing the hinge element and the hinge element circumscribing the moveable element, said inverting including moving the moveable element from a first position to a second position, said moving being performed such that substantially no movement of the non-moveable element occurs, and such that the moveable element moves about the hinge element the non-moveable element sloping in a direction from the standing surface to the moveable element toward the interior of the container. 16. The method of claim 15, wherein the moveable element includes radial ribs to increase rigidity. 17. The method of claim 12, wherein said transporting includes the standing surface of the plastic container resting on a flat surface, with the moveable element at or above the standing surface. 18. The method of claim 12, wherein the moveable element is inverted to a position coplanar with the bearing surface but no lower.
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