Plastic containers having base configurations with up-stand walls having a plurality of rings, and systems, methods, and base molds thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65B-063/08
B65D-001/02
B65D-079/00
B65B-061/24
B65B-003/04
B65B-007/28
B65D-001/40
B67C-003/22
출원번호
US-0846432
(2015-09-04)
등록번호
US-10189596
(2019-01-29)
발명자
/ 주소
Wurster, Michael P.
Bysick, Scott E.
출원인 / 주소
GRAHAM PACKAGING COMPANY, L.P.
대리인 / 주소
Baker Botts L.L.P.
인용정보
피인용 횟수 :
0인용 특허 :
282
초록▼
Plastic containers, base configurations for plastic containers, and systems, methods, and base molds thereof. In particular, the disclosed subject matter involves container base configurations having particular up-stand geometries that can assist or facilitate elevated temperature processing and/or
Plastic containers, base configurations for plastic containers, and systems, methods, and base molds thereof. In particular, the disclosed subject matter involves container base configurations having particular up-stand geometries that can assist or facilitate elevated temperature processing and/or cooling processing of plastic containers.
대표청구항▼
1. A method comprising: providing a blow-molded plastic container, the plastic container including a sidewall configured to support a film label, a finish projecting from an upper end of the sidewall and operative to cooperatively receive a closure to sealingly enclose the plastic container, and a b
1. A method comprising: providing a blow-molded plastic container, the plastic container including a sidewall configured to support a film label, a finish projecting from an upper end of the sidewall and operative to cooperatively receive a closure to sealingly enclose the plastic container, and a base extending from the sidewall to form a bottom enclosed end of the plastic container, wherein the bottom end comprises: an annular bearing portion defining a standing surface for the container, the base being smooth and without surface features from said bearing portion to a lower label stop,a cylindrical wall including a first concave ring, a second concave ring, and a third concave ring, the cylindrical wall circumscribed by said bearing portion and extending continuously upward from said bearing portion toward said finish generally in a radially inward direction, the first concave ring being continuous throughout a first circumference of the cylindrical wall and defined by a first diameter and a first cross-sectional radius, the second concave ring extending directly from the first concave ring and being continuous throughout a second circumference of the cylindrical wall and defined by a second diameter and a second cross-sectional radius, and the third concave ring extending directly from the second concave ring and being continuous throughout a third circumference of the cylindrical wall and defined by a third diameter and a third cross-sectional radius, the first diameter being greater than the second and third diameters, and the second diameter being greater than the third diameter, andan inner wall circumscribed by said cylindrical wall with an annular shoulder therebetween,hot-filling the plastic container via the finish with a product;sealing the hot-filled plastic container with the closure; andcooling the hot-filled and sealed plastic container;wherein an internal pressure characteristic after hot-filling and sealing the plastic container is compensated by the inner wall with substantially no movement of the cylindrical wall. 2. The method of claim 1, wherein each of the first, second, and third concave rings has a different circumference. 3. The method of claim 1, further comprising: blow molding the plastic container using a mold comprised of a base mold that forms the cylindrical wall and the inner wall;conveying the plastic container with its annular bearing portion resting on a flat surface while the internal pressure is compensated by the inner wall; andperforming at least one of pasteurization and retort processing on the filled and sealed container after said filling and sealing. 4. The method of claim 1, wherein the plastic container is a wide-mouth jar. 5. The method of claim 1, wherein a temperature of the hot-filled product upon filling is from 200° F. to 205° F. 6. The method of claim 5, wherein the internal pressure is compensated by movement of the inner wall outward in response to an overpressure created in the hot-filled and sealed container. 7. The method of claim 5, wherein said inner wall and said cylindrical wall are cooperatively operative so as to accommodate pressure variation within the container after the container has been hot-filled with a product at a temperature from 200° F. to 205° F. and sealed with the closure, said inner wall being operative to flex in response to the pressure variation within the container after the container has been hot-filled and sealed with the closure, whereas said cylindrical wall is operative to withstand movement as said inner wall flexes in response to the pressure variation within the container after the container has been hot-filled and sealed with the closure. 8. The method of claim 1, wherein the plastic container is a wide-mouth jar,wherein a temperature of the hot-filled product upon filling is from 200° F. to 205° F.,wherein the base is smooth and without surface features from the bearing portion to the sidewall,wherein the first concave ring has a greater circumference than the third concave ring, andwherein the internal pressure is compensated by movement of the inner wall outward in response to an overpressure created in the hot-filled and sealed jar. 9. The method of claim 1, wherein the base is smooth and without surface features from the bearing portion to the sidewall. 10. The method of claim 1, wherein the first concave ring has a greater circumference than the third concave ring. 11. The method of claim 10, wherein the second concave ring has a circumference between the respective circumferences of the third and first concave rings. 12. The method of claim 1, wherein the cylindrical wall further includes a fourth concave ring extending directly from the third concave ring and defined by a fourth diameter and having a fourth cross-sectional radius, the first, second, and third diameters being greater than the fourth diameter. 13. The method of claim 1, wherein the plastic container is a wide-mouth jar, wherein a temperature of the hot-filled product upon filling is from 185° F. to 205° F. 14. The method of claim 13, wherein the internal pressure is compensated by movement of the inner wall inward in response to a vacuum created by said cooling, said movement inward reducing the vacuum. 15. The method of claim 13, wherein said inner wall and said cylindrical wall are cooperatively operative so as to accommodate pressure variation within the container after the container has been hot-filled with a product at a temperature from 185° F. to 205° F. and sealed with the closure, said inner wall being operative to flex in response to the pressure variation within the container after the container has been hot-filled and sealed with the closure, whereas said cylindrical wall is operative to withstand movement as said inner wall flexes in response to the pressure variation within the container after the container has been hot-filled and sealed with the closure. 16. The method of claim 15, wherein the pressure variation is headspace pressure associated with the hot-filling with the product at the temperature from 185° F. to 205° F. and sealing the container, said inner wall being configured and operative to flex downward in response to the headspace pressure, andsaid sidewall withstands movement in response to the pressure variation. 17. The method of claim 16, wherein said inner wall is constructed so as to be at or above the bearing surface at all times when the inner wall flexes in response to the headspace pressure. 18. The method of claim 15, wherein the pressure variation is an internal vacuum associated with cooling of the hot-filled and sealed container, said inner wall being configured and operative to flex upward and inward in response to the vacuum, andsaid sidewall withstands movement in response to the vacuum. 19. The method according to claim 18, wherein the upward and inward flexing of said inner wall at least partially reduces the vacuum in the container. 20. The method of claim 1, wherein the plastic container is a wide-mouth jar, wherein a temperature of the hot-filled product upon filling is from 185° F. to 205° F.,wherein the base is smooth and without surface features from the bearing portion to the sidewall, wherein the first concave ring has a greater circumference than the third concave ring, andwherein the internal pressure is compensated by movement of the inner wall inward in response to a vacuum created by said cooling, said movement inward reducing the vacuum.
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