Method of hot-filling a plastic, wide-mouth, blow-molded container having a multi-functional base
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B67C-007/00
B65B-063/08
출원번호
US-0250856
(2008-10-14)
등록번호
US-8381496
(2013-02-26)
발명자
/ 주소
Trude, Greg
Tobias, John W.
Ogg, Richard K.
출원인 / 주소
Graham Packaging Company LP
인용정보
피인용 횟수 :
14인용 특허 :
180
초록▼
A container can have a body with an integrally formed base attached to the body. The base includes a concave annular wall extending from the container sidewall to a standing surface, and an inner wall extending from the standing surface to a substantially flat inner annular wall. The inner annular w
A container can have a body with an integrally formed base attached to the body. The base includes a concave annular wall extending from the container sidewall to a standing surface, and an inner wall extending from the standing surface to a substantially flat inner annular wall. The inner annular wall is recessed in the base and is substantially perpendicular to the container sidewall. The inner annular wall includes a centrally located dimple. The dimple includes a plurality of spaced apart and radially extending indented ribs. One or more of the ribs extend radially into a brace that tapers to meet the inner annular wall.
대표청구항▼
1. A method of processing a plastic container, comprising: (a) providing a plastic container having an upper portion including a finish, a sidewall, a lower portion including a base defining a standing surface, and a substantially transversely-oriented pressure panel located in the base;(b) introduc
1. A method of processing a plastic container, comprising: (a) providing a plastic container having an upper portion including a finish, a sidewall, a lower portion including a base defining a standing surface, and a substantially transversely-oriented pressure panel located in the base;(b) introducing heated liquid contents into the plastic container with the pressure panel located in an inwardly-inclined position entirely between the standing surface and the upper portion, with the incline of the pressure panel being defined from a direction from the standing surface toward the central longitudinal axis of the plastic container;(c) capping the plastic container; andafter said step (c), (d) moving the pressure panel to an outwardly-inclined position entirely between the standing surface and the upper portion. 2. The method of claim 1, further comprising the step of blow molding the plastic container with the pressure panel in the inwardly-inclined position. 3. The method of claim 1, further comprising the step of cooling the plastic container and liquid contents after the step (d), said cooling causing the pressure panel to move inwardly. 4. The method of claim 1, wherein the step (d) occurs as a result of increasing internal pressure within the plastic container. 5. The method of claim 1, wherein the pressure panel is operative to prevent inversion of the pressure panel and includes ribs radially extending therefrom, each said rib linearly tapering in plan view at a substantially constant rate over substantially its entire length. 6. The method of claim 1, wherein said step (d) includes moving the pressure panel outwardly to the outwardly-inclined position. 7. The method of claim 1, wherein said step (d) includes moving the pressure panel from the inwardly-inclined position to the outwardly-inclined position. 8. The method of claim 1, wherein the pressure panel includes a wall, the wall being radially inward of a hinge and circumscribed by the hinge. 9. The method of claim 8, wherein the wall is substantial flat. 10. A method of processing a plastic container, comprising: providing a blow molded plastic container having an upper portion including a finish, a sidewalk, a lower portion including a base defining a standing surface, and a substantially transversely-oriented pressure panel located in the base, the pressure panel being blow molded in a first inwardly-inclined position entirely between the standing surface and the upper portion;introducing heated liquid contents into the plastic container having the pressure panel initially positioned in the first inwardly-inclined position;capping the plastic container;flexing the pressure panel downwardly to an outwardly-inclined position entirely between the standing surface and the upper portion when the container is filled, capped, and subjected to an increase in pressure inside the container;cooling the plastic container and liquid contents; andafter said cooling, moving the pressure panel from the outwardly inclined position to a second inwardly-inclined position entirely between the standing surface and the upper portion to relieve vacuum when the contents of the tilled and capped container are cooled,wherein said moving the pressure panel occurs as a result of an internal vacuum formed within the plastic container. 11. The method of claim 10, wherein the first inwardly-inclined position is different from the second inwardly-inclined position. 12. The method of claim 10, wherein the Pressure panel has a frustum-shaped portion operative as an anti-inversion portion to prevent complete inversion of the pressure panel, andwherein, for each of said fleeing and said moving, the frustum-shaped portion maintains substantially a constant shape. 13. A method of processing a plastic container, comprising: (a) providing a plastic container having an upper portion including a finish, a sidewall, a lower portion including a base defining a standing surface, and a substantially transversely-oriented pressure panel located in the base, and an anti-inverting central portion surrounded by the pressure panel and opening downwardly in the base;(b) introducing heated liquid contents into the plastic container having the pressure panel;(c) capping the plastic container;(d) cooling the plastic container and liquid contents; and(e) prior to said cooling, moving the pressure panel between an outwardly-inclined position entirely between the standing surface and the upper portion and an inwardly-inclined position entirely between the standing surface and the upper portion, the anti-inverting central portion traveling up and down with the surrounding pressure panel while remaining in the downwardly-open position and maintaining a substantially constant shape,wherein said moving the pressure panel occurs as a result of an internal vacuum formed within the plastic container. 14. The method of claim 13, further comprising the step of blow molding the plastic container with the pressure panel in the inwardly-inclined position. 15. The method of claim 13, wherein the outwardly-inclined position and the inwardly-inclined position are maximum desired limits within which the pressure panel can move. 16. The method of claim 13, wherein the pressure panel further includes a plurality of tapering ribs adjacent the anti-inverting portion. 17. The method of claim 13, wherein the pressure panel includes a wall and a plurality or ribs, the wall being radially inward of a hinge and circumscribed by the hinge, and the ribs originating at an innermost radially inward portion of the wall, each of the ribs extending in a direction away from the wall.
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