Metal container and end closure with seal
12168551 ยท 2024-12-17
Assignee
Inventors
Cpc classification
B65D43/0212
PERFORMING OPERATIONS; TRANSPORTING
B65D17/02
PERFORMING OPERATIONS; TRANSPORTING
B65D17/4011
PERFORMING OPERATIONS; TRANSPORTING
B65D2543/00537
PERFORMING OPERATIONS; TRANSPORTING
International classification
B65D17/00
PERFORMING OPERATIONS; TRANSPORTING
B65D17/28
PERFORMING OPERATIONS; TRANSPORTING
Abstract
Embodiments of the present invention include food and beverage packaging utilizing heat seal technology, and specifically include food and beverage containers with end closures having seals or liners and snap-fit closure mechanisms. In some embodiments, the food and beverage containers and the end closures are metal. In further embodiments, the food and beverage containers include a domed portion on the bottom closed end. The end closures can snap onto the food and beverage containers such that the packaging is reclosable. Moreover, the sealed packaging with reclosable features can retain a variety of internal pressures including pressures higher than possible with the heat seal alone.
Claims
1. A food or beverage packaging comprising: a container comprising: a sidewall having an upper end and a lower end; a closed bottom end interconnected to the lower end of the sidewall; an opening at the upper end opposite the closed bottom end; and a container curl around a perimeter of the upper end; a metallic closure comprising: a substantially flat central panel with an upper surface and a bottom surface; a substantially vertical portion extending downwardly from a perimeter of the central panel; a closure curl extending inwardly from a lower end of the substantially vertical portion; a securing lug formed in a portion of the closure curl and extending around a portion of a circumference of the metallic closure, the securing lug extending inwardly from the substantially vertical portion of the metallic closure and forming a loop, wherein the loop of the securing lug engages the container curl; and a pry lug formed in a portion of the closure curl and extending around a portion of the circumference of the metallic closure, the pry lug comprising: a projection extending outwardly a distance from the substantially vertical portion of the metallic closure; an inward curve extending from an outer end of the projection; and an inwardly oriented portion extending from an inner end of the inward curve.
2. The food or beverage packaging of claim 1, wherein the pry lug further comprises: an outward bend extending from the lower end of the substantially vertical portion, wherein the outward bend extends approximately 90 degrees; and the projection extending outwardly from an outer end of the outward bend.
3. The food or beverage packaging of claim 2, wherein the pry lug further comprises a cut end interconnected to the inwardly oriented portion, the cut end being positioned between the central panel and the inwardly oriented portion in a vertical dimension.
4. The food or beverage packaging of claim 1, wherein the metallic closure further comprises a liner attached to the bottom surface of the substantially flat central panel.
5. The food or beverage packaging of claim 4, wherein the liner is a foil liner.
6. The food or beverage packaging of claim 1, wherein the container further comprises a domed portion in the closed bottom end.
7. The food or beverage packaging of claim 6, wherein the container further comprises a well extending downwardly from the lower end of the sidewall, the well having an interior wall interconnected on an upper end to a perimeter of the domed portion.
8. A metallic closure for a container, the metallic closure comprising: a substantially flat central panel with an upper surface and a bottom surface; a substantially vertical portion extending downwardly from a perimeter of the central panel; a closure curl extending inwardly from a lower end of the substantially vertical portion; a pry lug formed in a portion of the closure curl and extending around a portion of a circumference of the metallic closure, the pry lug comprising: a projection that extends outwardly a distance from the substantially vertical portion of the metallic container closure; a curved portion that extends from an outer end of the projection; an inwardly oriented portion that extends from an inner end of the curved portion; and a cut end that faces the inwardly oriented portion such that the cut end is hidden within the pry lug; a securing lug formed in a portion of the closure curl and extending around a portion of the circumference of the metallic closure, wherein the securing lug extends inwardly from the substantially vertical portion of the metallic closure and forms a securing loop, and wherein the securing loop of the securing lug engages a peripheral curl of a container; and a liner attached to the bottom surface of the substantially flat central panel.
9. The metallic closure of claim 8, wherein the cut end is positioned between the inwardly oriented portion and the upper surface of the substantially flat central panel.
10. The food or beverage packaging of claim 3, wherein the pry lug further comprises an upward bend positioned between the inwardly oriented portion and the cut end.
11. The food or beverage packaging of claim 10, wherein the cut end is positioned between the upward bend and the inward curve.
12. The food or beverage packaging of claim 3, wherein the cut end faces downwardly toward the inwardly oriented portion.
13. The food or beverage packaging of claim 1, wherein between the securing lug and the pry lug the closure curl has a radius of curvature of between about 0.015 inches and 0.055 inches.
14. The food or beverage packaging of claim 1, wherein the securing lug comprises: an inward bend extending from the lower end of the substantially vertical portion; a lower linear portion extending inwardly from an inward end of the inward bend; an upward bend extending from an inward end of the lower linear portion; and an upper linear portion extending from an upper end of the upward bend.
15. The metallic closure of claim 8, wherein the pry lug further comprises an upward bend positioned between the inwardly oriented portion and the cut end.
16. The metallic closure of claim 15, wherein the cut end is positioned between the upward bend and the curved portion.
17. The metallic closure of claim 8, wherein the liner is a foil liner.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Those of skill in the art will recognize that the following description is merely illustrative of the principles of the invention, which may be applied in various ways to provide many different alternative embodiments. This description is made for illustrating the general principles of the teachings of this invention and is not meant to limit the inventive concepts disclosed herein.
(2) The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the general description of the invention given above and the detailed description of the drawings given below, serve to explain the principles of the invention.
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(24) To assist in the understanding of the embodiments of the present invention, the following list of components and associated numbering found in the drawings is provided herein: 2 Closure 4 Pull Ring of Liner/Seal 6 Lip or Curl of Closure 10 Liner/Seal 12 Secure Bead 20 Pry Lug 22 Securing Lug 24 Transitional Tapering Portion 30 Indentation 32 Curl or Loop of Pry Lug 34 Cut End 36 Bottom Portion of Pry Lug 50 Container 52 Container Body 54 Container Neck 56 Container Contents 58 Headspace 60 Container Dome 62 Container Well or Annular Support Member 64 Container Curl 66 Container Top/Open End 68 Container Bottom/Closed End H Height of Packaging FH Freeboard Height BH Body Height R1 Radius of Curvature of Closure Curl R2 Radius of Curvature of Container Curl W Distance (bead or liner/seal extends inward) L Inward Distance of Pry Lug L2 Outward Distance of Pry Lug
(25) It should be understood that the drawings are not necessarily to scale, and various dimensions may be altered. In certain instances, details that are not necessary for an understanding of the invention or that render other details difficult to perceive may have been omitted. It should be understood, of course, that the invention is not necessarily limited to the particular embodiments illustrated herein.
DETAILED DESCRIPTION
(26) Those of skill in the art will recognize that the following description is merely illustrative of the principles of the invention, which may be applied in various ways to provide many different alternative embodiments. This description is made for illustrating the general principles of the teachings of this invention and is not meant to limit the inventive concepts disclosed herein.
(27) Although the following text sets forth a detailed description of numerous different embodiments, it should be understood that the legal scope of the description is defined by the words of the claims set forth at the end of this disclosure. The detailed description is to be construed as exemplary only and does not describe every possible embodiment since describing every possible embodiment would be impractical, if not impossible. Numerous alternative embodiments could be implemented, using either current technology or technology developed after the filing date of this patent, which would still fall within the scope of the claims.
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(29) To facilitate opening, the consumer pulls on the pull ring 4 to remove the closure 2 from the container 50 such that the contents of the container can be accessed. The pull ring 4 makes it easier for the consumer to open the packaging. In some embodiments, after the consumer pulls on the pull ring 4 and pulls the closure 2 off of the container 50, the liner or seal 10 remains attached to the closure 2. When the consumer wants to close the container 50, the consumer can push the closure 2 onto the container finish (i.e., upper portion of the container, not visible in
(30) In other embodiments, after the consumer pulls on the pull ring 4 and pulls the closure 2 off of the container, the consumer can also pull the liner or seal 10 off of the closure 2. Therefore, when the consumer wants to close the container 50, the consumer can push the closure 2 onto the container finish (i.e., upper portion of the container, not visible in
(31) The packaging is reclosable/closable, but not re-sealable, meaning the container 50 can be closed to prevent spillage, but the consumer cannot reseal the packaging. The terms liner and seal (nouns) can be used interchangeably herein. Reclosable and closable mean that the user can secure the lid onto the container to prevent liquid or food from spilling out. In some embodiments, the packaging can be reclosed such that it is liquid-tight, meaning drops of liquid will not leak out if properly closed. However, the packaging is not re-sealable, meaning that the pressure or vacuum seal cannot be reinstituted by the user after they open the packaging. Thus, the packaging is not gas-tight after it has been opened.
(32) In various embodiments, the closure 2 is securely interconnected to the container 50 via friction fit sidewalls or curls, i.e., the interaction between the closure sidewall or curl and the container sidewall or curl.
(33) In some embodiments, a molded liner/seal (with a specific shape) is used instead of a flat liner. The specific shape or mold of the liner/seal can be dimensioned in such a way to support and assist the connection between container and closure, and additionally it can help with the seal to achieve higher pressures in the container 50.
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(36) The contents 56 of the container can be filled past the body 52 and into the neck portion 54 of the container 50. The space above the container contents 56 is called the headspace 58 and has a freeboard height FB. The freeboard height FH can be between about 0.15 inches and 1.0 inch in some embodiments, between about 0.35 inches and about 0.55 inches in a preferred embodiment, or about 0.45 inches in a more preferred embodiment. In some embodiments, the freeboard height FH of the packaging is about 0.15 inches, 0.25 inches, 0.35 inches, 0.45 inches, 0.55 inches, 0.65 inches, 0.75 inches, 0.85 inches, 0.95 inches, or 1.0 inches, or any range there between.
(37) In some embodiments, the bottom 68 of the container 50 includes a well 62, similar to the nitrogen well described in U.S. patent application Ser. No. 16/942,574 and published as U.S. Patent Publication No. 2021/0031973, which is incorporated herein by reference. Alternatively, the bottom 68 of the container 50 has an annular support member 62, which will contact a supporting surface to maintain the food or beverage container 50 in a vertical position during stacking, consumer use, and the like. The bottom portion 68 of the food or beverage container 50 is generally formed to define a recessed or concave dome surface 60 to resist deformation due to internal fluid pressures. The annular support member 62 generally contains outer and inner surfaces that join the outer wall to the annular support member 62 and that join the annular support member 62 to the domed surface 60, respectively. The container dome 60 can be shaped to hold chips, such as the dome described in U.S. patent application Ser. No. 16/942,574 and published as U.S. Patent Publication No. 2021/0031973, which is incorporated herein by reference, or the container dome 60 can be designed to resist deformation due to internal fluid pressures. The container body 52 has an outer diameter OD, and the annular support member 62 has an inner diameter ID measured from the center of the curved portion or curl. The outer diameter OD can be between about 1.5 inches and 3.0 inches in some embodiments, between about 2.0 inches and about 2.5 inches in a preferred embodiment, or about 2.259 inches in a more preferred embodiment. In some embodiments, the outer diameter OD is about 1.5 inches, 1.75 inches, 2.0 inches, 2.25 inches, 2.259 inches, 2.5 inches, 2.75 inches, or 3.0 inches, or any range there between. The inner diameter ID can be between about 1.0 inches and 2.5 inches in some embodiments, between about 1.5 inches and about 2.0 inches in a preferred embodiment, or about 1.789 inches in a more preferred embodiment. In some embodiments, the inner diameter ID is about 1.0 inches, 1.25 inches, 1.5 inches, 1.75 inches, 1.789 inches, 2.0 inches, 2.25 inches, or 2.5 inches, or any range there between. In some embodiments, a three-point bore micrometer is used.
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(39) The closure 2 is positioned on the container 50 and the closure 2 has a closure curl 6 with a radius of curvature R1. The closure curl 6 radius of curvature R1 can be between about 0.015 inches and 0.055 inches in some embodiments, between about 0.025 inches and about 0.045 inches in a preferred embodiment, or about 0.035 inches in a more preferred embodiment. In some embodiments, the closure curl 6 radius of curvature R1 is about 0.015 inches, 0.02 inches, 0.025 inches, 0.03 inches, 0.035 inches, 0.04 inches, 0.045 inches, 0.05 inches, or 0.055 inches, or any range there between.
(40) The packaging includes a liner 10, which is pliable in some embodiments, a foil seal 10 in other embodiments, and/or a heat seal 10 in still other embodiments, positioned between the closure 2 and the container 50. The liner/seal 10 extends along the underside of the closure 2 and down the vertical portion of the closure 2 such that it extends around the container curl 64. The liner/seal 10 can extend inward past the outer perimeter of the container curl 64 a distance W in order to securely hold the closure 2 on the container 50. The distance W can be between about 0.005 inches and 0.035 inches in some embodiments, between about 0.01 inches and about 0.02 inches in a preferred embodiment, or about 0.015 inches in a more preferred embodiment. In some embodiments, the distance W is about 0.005 inches, 0.01 inches, 0.015 inches, 0.02 inches, 0.025 inches, 0.03 inches, or 0.035 inches, or any range there between.
(41) In some embodiments, the liner 10 includes a bead 12 along at least a portion of the perimeter of the liner 10. In some embodiments, the bead 12 extends around the entire perimeter of the liner 10. In other embodiments the bead 12 only extends around a portion of the perimeter of the liner 10. The bead 12 that helps secure the closure 2 to the container 50 because the bead 12 is the portion of the liner 10 that extends inwardly past the outer perimeter of the container curl 64 a distance W. The distance W can be between about 0.005 inches and 0.035 inches in some embodiments, between about 0.01 inches and about 0.02 inches in a preferred embodiment, or about 0.015 inches in a more preferred embodiment. In some embodiments, the distance W is about 0.005 inches, 0.01 inches, 0.015 inches, 0.02 inches, 0.025 inches, 0.03 inches, or 0.035 inches, or any range there between. Thus, the bead 12 can be called a securing bead or secure bead or a pliable secure bead. The bead 12 can be pliable in some embodiments. The liner 10 provides a seal to securely seal the closure 2 onto the container 50. Use of the liner 10 permits higher internal pressures in the packaging than possible without the liner 10.
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(43) In some embodiments, the reclosable closure 2 has a thickness that is larger than a thickness of the liner/seal 10.
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(49) The packaging is closable, but not re-sealable, meaning the container 50 can be closed to prevent spillage, but the consumer cannot reseal the packaging. The seal or liner can be similar to the seal or liner 10 described in conjunction with
(50) In various embodiments, the closure 2 is securely interconnected to the container 50 via friction fit sidewalls or curls, i.e., the interaction between the closure sidewall or curl 6 and the container sidewall or curl or using securing lugs 22 or other dimple features. The securing lugs 22 can be formed in the closure perimeter curl 6 and snap outward to receive the container's curl and then snap back into place around the container's curl. The dimple features function similarly and are positioned on a portion of the closure 2 positioned below the container curl 64 when the container 50 and closure 2 are interconnected. The dimple feature may be embossed, pressed, or formed in the closure 2.
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(53) The contents 56 of the container can be filled past the body 52 and into the neck portion 54 of the container 50. The space above the container contents 56 is called the headspace 58. In some embodiments, the bottom 68 of the container 50 includes a well 62, similar to the nitrogen well described in U.S. patent application Ser. No. 16/942,574 and published as U.S. Patent Publication No. 2021/0031973, which is incorporated by reference herein. Alternatively, the bottom 68 of the container 50 has an annular support member 62 that will contact a supporting surface to maintain the food or beverage container 50 in a vertical position during stacking, consumer use, and the like. The bottom portion 68 of the food or beverage container 50 is generally formed to define a recessed or concave dome surface 60 to resist deformation due to internal fluid pressures. The annular support member 62 generally contains outer and inner surfaces that join the outer wall to the annular support member 62 and that join the annular support member 62 to the domed surface 60, respectively. The container dome 60 can be shaped to hold chips, such as the dome described in U.S. patent application Ser. No. 16/942,574 and published as U.S. Patent Publication No. 2021/0031973, which is incorporated by reference herein, or the container dome 60 can be designed to resist deformation due to internal fluid pressures. The container body 52 has an outer diameter OD, and the annular support member 62 has an inner diameter ID measured from the center of the curved portion or curl. The outer diameter OD can be between about 1.5 inches and 3.0 inches in some embodiments, between about 2.0 inches and about 2.5 inches in a preferred embodiment, or about 2.259 inches in a more preferred embodiment. In some embodiments, the outer diameter OD is about 1.5 inches, 1.75 inches, 2.0 inches, 2.25 inches, 2.259 inches, 2.5 inches, 2.75 inches, or 3.0 inches, or any range there between. The inner diameter ID can be between about 1.0 inches and 2.5 inches in some embodiments, between about 1.5 inches and about 2.0 inches in a preferred embodiment, or about 1.789 inches in a more preferred embodiment. In some embodiments, the inner diameter ID is about 1.0 inches, 1.25 inches, 1.5 inches, 1.75 inches, 1.789 inches, 2.0 inches, 2.25 inches, or 2.5 inches, or any range there between. In some embodiments, a three-point bore micrometer is used.
(54) A pry lug 20 is shown on one side of the top of the container 50 and a securing lug 22 is shown on the other side of the top of the container 50.
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(56) The pry lug 20 does not engage the container curl 64. The user pulls upwardly on the pry lug 20 to remove the closure 2 from the container 50. The closure 2 has a seal/liner 10 secured to the underside of the closure 2. In some embodiments, the seal/liner 10 covers the substantially flat portion of the closure 2 and does not extend down the vertical portion or curl (not shown in this figure) of the closure 2. The seal/liner 10 is positioned between the closure 2 and the top of the container curl 64 to form a tight seal. The seal/liner 10 can be formed and attached using heat seal technology. The seal or liner 10 can be pliable or a foil seal/liner 10.
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(59) However, in other embodiments the closure curl 6 can have a larger or smaller radius of curvature R1, which can be larger or smaller than the radius of curvature R2 of the container curl 64. In some embodiments, the closure curl 6 does not engage the container curl 64. Rather, it is the securing lugs 22 that engage the container curl 64. However, in other embodiments, the closure 2 is securely interconnected to the container 50 via friction fit curls, i.e., the interaction between the closure curl 6 and the container curl 64. The closure 2 has a seal/liner 10 secured to the underside of the closure 2. The seal/liner 10 is positioned between the closure 2 and the top of the container curl 64 to form a tight seal. The seal/liner 10 can extend between the closure curl and container curl 64 in some embodiments. The seal/liner 10 can be formed and attached using heat seal technology. The seal or liner 10 can be pliable or a foil seal/liner 10. In some embodiments, the seal/liner 10 covers the substantially flat portion of the underside of the closure 2 and does not extend down the vertical portion or curl 6 of the closure 2. In other embodiments, the seal or liner 10 extends downward such that it is positioned between the container curl 64 and closure curl 6.
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(66) In various embodiments, the closures and the containers are comprised of aluminum or an aluminum alloy, and preferably comprised of recyclable aluminum or a recyclable aluminum alloy. In some embodiments, the closure and container are the same material and can even be the same type of aluminum alloy. The closure and/or container can be comprised of other materials, including other metals, and remain within the scope of this disclosure.
(67) Additionally, various features/components of one embodiment may be combined with features/components of another embodiment. For example, features/components of one figure can be combined with features/components of another figure or features/components of multiple figures. To avoid repetition, every different combination of features has not been described herein, but the different combinations are within the scope of this disclosure. Additionally, if details (including angles, dimensions, etc.) about a feature or component are described with one embodiment or one figure, then those details can apply to similar features of components in other embodiments or other figures.
(68) While various embodiments of the present invention have been described in detail, it is apparent that modifications and alterations of those embodiments will occur to those skilled in the art. However, it is to be expressly understood that such modifications and alterations are within the scope and spirit of the present invention, as set forth in the following claims. Further, the invention(s) described herein is capable of other embodiments and of being practiced or of being carried out in various ways. It is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
(69) Any one or more aspects described herein can be combined with any other one or more aspects described herein. Any one or more features described herein can be combined with any other one or more features described herein. Any one or more aspects or features described in connection with one embodiment can be combined with or included with any other embodiment described herein. Any one or more embodiments described herein can be combined with any other one or more embodiments described herein. Additionally, any feature described herein can be claimed in combination with any other feature(s) as described herein, regardless of whether the features come from the same described embodiment.