Food Container with Tamper-Proof Hinged Closure
20230174280 · 2023-06-08
Inventors
- Edisson Orjuela (Chandler, AZ, US)
- Guillermo Angarita (Bogotá, CO)
- Ivan Peña (Cuautitlán Izcalli, MX)
- John Sierra (Chandler, AZ, US)
Cpc classification
B65D2401/15
PERFORMING OPERATIONS; TRANSPORTING
B65D43/164
PERFORMING OPERATIONS; TRANSPORTING
B65D2543/00324
PERFORMING OPERATIONS; TRANSPORTING
B65D2401/10
PERFORMING OPERATIONS; TRANSPORTING
B65D43/021
PERFORMING OPERATIONS; TRANSPORTING
B65D2543/00833
PERFORMING OPERATIONS; TRANSPORTING
B65D55/06
PERFORMING OPERATIONS; TRANSPORTING
International classification
Abstract
A one-piece molded food container having a lid, a base and a tamper-evident hinged element connecting the lid and base.
Claims
1. A tamper-evident and re-closable container comprising: a molded single-piece container comprising a base, a lid and a tamper-evident hinged element with frangible connecting portions connecting the base and lid in an initial as-molded open position, the frangible connecting portions when broken allowing separation the base and lid and providing tamper evidence that the container has been previously opened; the lid and base being movable between: a) the initial as-molded open position with the lid and base being connected by the hinged element and allowing the base to be filled with a product; b) an initial closed position with the lid positioned over and temporarily sealed to the base to enclose a product in the closed container, the hinged element allowing relative rotational movement of the base and lid from the initial open position to the initial closed position; c) an opened position, subsequent to the initial closed position, in which the frangible connecting portions of the hinged element have been broken allowing the base and lid to be separated to allow removal of a product from the base and providing tamper evidence that the container has been opened; and d) a further closed position, subsequent to the opened position, in which the separate base and lid can be resealed to allow storage and subsequent opening of the closed container; the tamper-evident hinged element comprising mating flanges on perimeter portions of the lid and base that are initially connected by the frangible connecting portions, the mating flanges on the lid and base further comprising hinges that allow for the relative rotational movement of the base and lid from the initial as-molded open position to the initial closed position, the mating flanges including a foldable ring tab having an outer perimeter and foldable extensions adjacent opposing sides of the ring tab outer perimeter, the ring tab outer perimeter being partially formed by the frangible connecting portions for connecting the foldable extensions to the ring tab outer perimeter, the ring tab being configured to be grasped by a user to enable the user to pull the lid from the base and break the frangible connecting portions.
2. The tamper-evident and re-closable container of claim 1, wherein: the mating flange on the base comprises a fixed support on the base perimeter and the foldable extensions, the foldable extensions being disposed on opposing ends of the fixed support, and the mating flange on the lid comprises the foldable ring tab.
3. The tamper-evident and re-closable container of claim 2, wherein: the mating flange on the lid comprises hinges for folding the ring tab in the closed position and unfolding the ring tab in the opened position, and the mating flange on the base comprises hinges for folding the extensions in the closed position and unfolding the extensions in the opened position.
4. The tamper-evident and re-closable container of claim 3, wherein: the frangible connecting portions are disposed on adjacent portions of the mating lid and base flanges and between the respective hinges of the mating flanges.
5. The tamper-evident and re-closable container of claim 4, wherein: a bottom wall of the base lies in a horizontal base reference plane BRP, an outer folded portion of the ring tab is disposed downwardly transverse to the BRP in the closed position, and the outer folded portion of the ring tab is lifted by pulling outwardly and upwardly away from the lid perimeter to break the frangible connecting portions.
6. The tamper-evident and re-closable container of claim 2, wherein: the mating flange on the lid comprises two sets of hinges for folding the ring tab in the closed position and unfolding the ring tab in the opened position, and the mating flange on the base comprises two sets of hinges for folding the extensions in the closed position and unfolding the extensions in the opened position.
7. The tamper-evident and re-closable container of claim 6, wherein: the frangible connecting portions are disposed on adjacent portions of the base flange and a folded portion of the ring tab in the closed position.
8. The tamper-evident and re-closable container of claim 7, wherein: a bottom wall of the base lies in a horizontal base reference plane BRP, the folded portion of the ring tab and the frangible connecting portions are disposed parallel to the BRP in the closed position, wherein the folded portion of the ring tab is pushed down toward the base plane to break the frangible connections.
9. The tamper-evident and re-closable container of claim 8, wherein: the extensions on the base flange are folded and the distal portions thereof are disposed in a top reference plane, parallel to the BRP, in the closed position, and frangible connecting portions are disposed between the folded base extensions and the lid flange, wherein the frangible connections on the folded base extensions are broken by pulling the unfolded ring tab upwardly away from the BRP.
10. The tamper-evident and re-closable container of claim 1, wherein: the mating flange on the lid remains attached to the lid when the frangible connecting portions are broken, and the mating flange on the base remain attached to the base when the frangible connecting portions are broken.
11. The tamper-evident and re-closable container of claim 10, wherein: the lid and base include re-sealable rims for sealing and unsealing of the lid to the base.
12. The tamper-evident and re-closable container of claim 11, wherein: the ring tab on the lid is pulled upwardly away from the base plane for subsequent removal of the lid from the base by separating the re-sealable rims.
13. The tamper-evident and re-closable container of claim 1, wherein: the as-molded container is formed in the open position, with a bottom wall of the base lying in a horizontal base reference plane, and a top wall of the lid lying in a top reference plane that is parallel to the base reference plane.
14. The tamper-evident and re-closable container of claim 13, wherein: the ring tab and base flange are folded about the hinges on the lid flange and base flange to close the lid over the base in the initially closed position.
15. The tamper-evident and re-closable container of claim 1, wherein: the base and lid perimeters are rounded or rectangular.
16. A method of forming a tamper-evident and re-closable container comprising: molding a single-piece container comprising a base, a lid and a tamper-evident hinged element, forming in the mold, or after molding, frangible connecting portions connecting the base and lid in an initial as-molded open position, the frangible connecting portions when broken allowing separation the base and lid and providing tamper evidence that the container has been previously opened; the tamper-evident hinged element comprising mating flanges on perimeter portions of the lid and base that are initially connected by the frangible connecting portions, the mating flanges on the lid and base further comprising hinges that allow for the relative rotational movement of the base and lid from the initial as-molded open position to an initial closed position, the mating flanges including a foldable ring tab having an outer perimeter and foldable extensions adjacent opposing sides of the ring tab outer perimeter, the ring tab outer perimeter being partially formed by the frangible connecting portions for connecting the foldable extensions to the ring tab outer perimeter, the ring tab being configured to be grasped by a user to enable the user to pull the lid from the base and break the frangible connecting portions. the lid and base being movable between: a) the initial as-molded open position with the lid and base being connected by the hinged element and allowing the base to be filled with a product; b) the initial closed position with the lid positioned over and temporarily sealed to the base to enclose a product in the closed container, the hinged element allowing relative rotational movement of the base and lid from the initial open position to the initial closed position; c) an opened position, subsequent to the initial closed position, in which the frangible connecting portions of the hinged element have been broken allowing the base and lid to be separated to allow removal of a product from the base and providing tamper evidence that the container has been opened; and d) a further closed position, subsequent to the opened position, in which the separate base and lid can be resealed to allow storage and subsequent opening of the closed container.
Description
BRIEF DESCRIPTION OF THE FIGURES
[0048] Various embodiments of the invention will now be described and illustrated in the accompanying drawings wherein:
[0049]
[0050]
[0051]
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DETAILED DESCRIPTION
[0058] According to various embodiments of the invention described in the text and illustrated in the figures, a one-piece as-molded container 5 (preferably solid plastic thermoformed container) is provided comprising a base 10 and lid 40 with a tamper-evident hinged element 60 connecting the base and lid. The hinged element comprises a hinged base flange 61, a hinged lid flange 69, and a foldable ring tab 62 on the hinged lid flange 69 having frangible connections FC to the hinged base flange 61. The base has a recess 11 configured to receive a food, or a non-food product, and the container has mating re-sealable lid and base rims 44, 12 for resealable closing of the base and lid (after the initial opening). During initial opening of the sealed container, the hinged flanges are broken along the frangible connections resulting in a two-piece container, with the lid and base flanges remaining connected to the lid and base respectively. The broken frangible connections of the hinged element provide tamper-proof evidence that the container has been opened.
[0059] The various embodiments of the invention disclosed herein include one or more of the following components and/or variables and/or reference planes (with subsequent embodiments provided with similar reference numbers in a 100, 200 and 300 series): [0060] 5 a container assembly, [0061] 10 a base of the container assembly, comprising: [0062] 11 a cup-shaped base recess for holding a product (e.g., food product), [0063] 12 a base rim, at open top end of the base, [0064] 13 a closed bottom wall of the base recess, lying in a base reference plane BRP, [0065] 14 a sidewall of the recess 11, [0066] 15 a top wall of the recess, lying in a top reference plane TRP, parallel to BRP, [0067] 16 an inner wall of base rim 12, transverse to BRP [0068] 17 an outer wall of base rim 12, transverse to BRP [0069] 18 an outer peripheral lip on the base, lying parallel to BRP, [0070] 19 an inner lip on the base rim 12, parallel to BRP [0071] 40 a lid of the container assembly, comprising: [0072] 42 a closed lid top wall, configured to cover the base recess 11, [0073] 43 an outer peripheral lip on the lid, [0074] 44 a lid rim, at the open top end of the lid, for engaging the base rim 12, [0075] 45 a top rim wall of the lid rim 44, [0076] 46 an inner rim wall of the lid rim 44, [0077] 47 an outer rim wall of the lid rim 44, [0078] 60 a tamper-evident hinged element connecting the base 10 and lid 40 in the as-molded and initial closed positions, comprising: [0079] 61 a base flange, [0080] 62 a folded ring tab or loop, for finger engagement, on the lid flange 69, [0081] 63 a fixed support element on the base flange, [0082] 64 an arched support wall of element 63, protecting the folded ring tab 62, [0083] 65 an outer/distal portion of folded ring tab 62, [0084] 66 an inner/proximal portion of folded ring tab 62, [0085] 67 a tab on the base flange, distal of base hinge 68 [0086] 68 a hinge on the base flange 61, [0087] 69 a lid flange, [0088] 70 a hinge on the lid flange 69, [0089] BRP horizontal base reference plane, in which bottom wall 13 of base/recess lies, [0090] T vertical direction, transverse to BRP [0091] CCA vertical central container axis, aligned with T, [0092] TRP horizontal top reference plane, parallel to BRP, in which top wall 15 of base lies, [0093] FC frangible connection.
FIGS. 1-7
[0094] As shown in
[0095] The container base 10 includes: [0096] a cup-shaped thermoformed recess 11 (for receiving food and/or a non-food product) having an open top end surrounded by a top base rim 12, a closed bottom wall 13, and a closed sidewall 14 extending upwardly from the bottom wall to the rim; [0097] the bottom wall 13 lies in a horizontal base reference plane BRP and the cup-shaped sidewall 14 extends upwardly (in the vertical direction transverse T to the BRP) from the closed bottom wall 13 to the open top end rim 12, the cup-shaped sidewall 14 flares radially outwardly from a first diameter defining the bottom wall periphery 13P to a second diameter, greater than the first diameter, at the open top end defined by the rim periphery 12P; in the present embodiment the base and lid each have a generally circular periphery with respect to a vertical central container axis CCA aligned with the transverse direction T; [0098] the base rim 12 includes: a base top wall 15 aligned in a horizontal top reference plane TRP parallel to the BRP, a vertical rim wall extending downwardly from the top wall 15 having an inner rim wall surface 16 and an outer rim wall surface 17 each aligned in the transverse direction T, an outer lip 18 that extends radially outwardly (horizontally) from the outer rim wall surface 17 to form a peripheral shoulder or lip 18 parallel to the BRP (that can be grasped by a user to facilitate separating the base and lid rims), and an inner lip 19 that sits below the top wall 15, lies parallel to the BRP, and is configured to engage (sit below and in contact with) a bottom rim wall 46 on the lid 40 to releasably seal (via a pressure fit) the bae and lid rims 12, 44 together.
[0099] The container lid 40 includes: [0100] a closed top lid wall 42 having a perimeter 42P; [0101] a lid rim 44 comprising a top rim wall 45 that extends radially outwardly (with respect to the vertical central container axis CCA) from the top wall perimeter 42P, the top rim wall 45 being aligned parallel to the BRP (when the lid rim 44 engages the base rim 12 in the closed container position as shown in
[0103] The tamper-proof closure element 60 includes a base flange 61 and a lid flange 69 as follows:
[0104] the base flange 61 comprising: [0105] a central fixed support element 63 extending upwardly (in the transverse direction T) from the base lip flange 61 to the top wall 15 and spanning all or a portion of the base flange 61, the support element including a central vertical support wall 63 (here having a radial outwardly front face in an arch shape 64) that forms an opening for the outer foldable portion 65 of the ring tab 62 on the lid flange, and a pair of spaced-apart proximal end flange portions 61P each connecting to a hinge 68 and distal tab or extension 67,
[0106] the lid hinge flange 69 comprising: [0107] two spaced-apart inner/proximal flange portions 66A, 66B of the ring tab 62 that extend radially outwardly from the lid periphery and connecting, via a respective one of the lid hinges 70A, 70B, to opposite ends of the distal loop portion 65; the flange portions 66 initially lie horizontally (parallel to the BRP) within a space defined by the front face 64 of the arched wall 63 on the bae flange; frangible connections FC are disposed between the outer ring tab portion 65 and the base flange distal tabs 67A, 67B.
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[0113] a) the lid flanges 69A, 69B are disposed in a horizontal plane parallel to the BRP and lie above and in contact with the top wall of the support element 63, the lid hinges 70A, 70B are each bent 90 degrees downwardly such that the lid loop portion 65 is aligned in the vertical transverse direction T;
[0114] b) the base hinges 68A, 68B are each bent upwardly 90 degrees such that the base side tabs 68A, 68B are now aligned in the vertical transverse direction, along with the finger loop 65 and frangible connections FC therebetween, with the side tabs engaging the post end walls 66A, 66B respectively. [0115] 5. When a user wishes to open the closed container, as shown in
FIGS. 8A-8B
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FIGS. 9A-9G
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[0121] In various embodiments, the one-piece container may comprise a solid polyolefin or polyester based plastic, such as polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE) or polylactic acid (PLA) based polymers. In one embodiment, the base container may be opaque. In one embodiment the base and lid may comprise molded pulp fiber.
[0122] In various embodiments, the one-piece container is made of a solid clear thermoformable plastic, e.g., a polyester such as PET, wherein the plastic is heated, pressed into a mold and then cooled to form the shaped thermoformed container. PET is particularly desirable as it is lightweight and recyclable. Alternatively, the container may be made from polypropylene (PP).
[0123] In various embodiments the base and/or lid may comprise multiple compartments, e.g., recessed areas, for receiving different products.