US20090206082A1 - Tamper-evident packaging system - Google Patents
Tamper-evident packaging system Download PDFInfo
- Publication number
- US20090206082A1 US20090206082A1 US12/031,650 US3165008A US2009206082A1 US 20090206082 A1 US20090206082 A1 US 20090206082A1 US 3165008 A US3165008 A US 3165008A US 2009206082 A1 US2009206082 A1 US 2009206082A1
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- US
- United States
- Prior art keywords
- container system
- skirt
- tray
- lid
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0235—Removable lids or covers with integral tamper element
- B65D43/0237—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element
- B65D43/0249—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element on both the inside and the outside of the mouth of the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2401/00—Tamper-indicating means
- B65D2401/10—Tearable part of the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00342—Central part of the lid
- B65D2543/00351—Dome-like
- B65D2543/00361—Dome-like placed on a tray like container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00601—Snapping means on the container
- B65D2543/00611—Profiles
- B65D2543/0062—Groove or hollow bead
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00601—Snapping means on the container
- B65D2543/00675—Periphery concerned
- B65D2543/00685—Totality
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00712—Snapping means on the lid
- B65D2543/00722—Profiles
- B65D2543/00731—Groove or hollow bead
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00592—Snapping means
- B65D2543/00712—Snapping means on the lid
- B65D2543/00787—Periphery concerned
- B65D2543/00796—Totality
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00824—Means for facilitating removing of the closure
- B65D2543/00833—Integral tabs, tongues, handles or similar
- B65D2543/00842—Integral tabs, tongues, handles or similar outside of the lid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Abstract
Description
- 1. Field
- Disclosed are container systems for foodstuffs. This disclosure relates to a food packaging containment system that is suitable for heated food items such as rotisserie chicken and the like. The system can include a tray compartment, a lid member and a tamper-evident locking mechanism. The disclosure also relates to a food containment system that can include a tray compartment, a lid member and structures for release of heated gases.
- 2. Description of the Related Art
- Packaging for food (e.g., packaging for roasted chickens) has various drawbacks. For example, many chicken roaster packages lack a means whereby a consumer can know whether the packaging has been tampered with. Release of heated gases has also been a problem. Packages can sometimes be too hot to carry conveniently.
- In some embodiments, a container system suitable for food comprises a tray member with a first connection lip, a lid member with a second connection lip configured to connect with the first connection lip of the tray member and a locking mechanism. The first and second connection lips are configured to form a seal between the lid member and the tray member. The connection lips may form a ridge and groove configured to receive the ridge. The locking mechanism can be configured to engage when the tray member and lid member are positioned to connect. The locking mechanism may comprise locking means, a skirt with a skirt edge and means for impeding access to the skirt edge.
- In some embodiments the locking means may comprise a male member and a female member configured to receive the male member. The means for impeding access to the skirt edge may comprise a finger guard that impedes access to the skirt edge when the male member is received into the female member. The finger guard may be a raised rib with a side surface configured to overhang and impede access to the skirt edge. The skirt may further comprise a flat portion and a rib portion configured to impede access to the skirt edge. The container system may be stackable.
- In some embodiments, the container system further comprises a tamper-evident separation mechanism. The tamper-evident separation mechanism may comprise a pull tab and a break-locus at which the skirt is configured to break in order to allow the user to open the container system at the seal between the lid member and the tray member. The break-locus can allow a single piece of material to separate into two pieces when the pull tab is pulled. The break-locus can take many forms, for example, it may be a perforated section or a thin section. The break-locus may also be an area around which the skirt folds along to allow the male and female members to engage with each other.
- In addition, the system may be configured such that pulling on the pull tab after the male member has engaged with the female member can cause the skirt to break at the break-locus, allowing the pull tab and the separated portion of the skirt to separate and indicating that the tray member and the lid member have been closed and subsequently opened. This provides a consumer with evidence of potential tampering.
- Some embodiments comprise a container system suitable for heated food. A first container system may comprise a tray with an activation member and a lid. The lid can have an aperture partially covered by a flap. The aperture and flap are configured to enable the release of heated gases when the flap is depressed. The activation member is configured to depress a flap in a second container system. The activation member may optionally protrude downward in the bottom of the tray member.
- The container system of some embodiments comprise a dome surface, at least one stacking rib and an aperture surface. The aperture surface may comprise the aperture and the flap and the aperture surface is configured such that it is at least partially above the dome surface and below the at least one stacking rib. The aperture surface may also be sloped.
- Some embodiments encompass a method of making a tamper-evident food container system. The method may comprise providing a first container portion of a lid formed from a single piece of material, the lid having an outward lid extension substantially surrounding the perimeter thereof. Providing a second container portion comprising a tray formed from a single piece of material, the tray having an outward tray extension substantially surrounding the perimeter thereof. Establishing an enclosed space by positioning the lid and the tray together with the outward lid extension and the outward tray extension abutting each other around substantially the full perimeter of the enclosed space and securing the lid to the tray by inserting a male portion of a locking mechanism of one container portion into a female portion of a locking mechanism in the other container portion at a securement complex. Further securing the lid to the tray at the securement complex by folding a portion of the long outward extension of one container portion over a sandwiched section of the outward extension of the other container portion and preventing future undetected tampering by causing a pull tab to protrude from the side of the food-container system, the pull tab configured to permanently separate from the container portion when the tab is pulled with sufficient force to separate the lid from the tray.
- Some methods may comprise the further step wherein securing the lid to the tray comprises positioning the folded portion of the outward extension of one container portion underneath an overhanging feature on the other container portion to impede unfolding of the long outward extension.
- Some methods of making a tamper-evident food container system may involve the following steps. Forming a lid and tray, each from a single piece of material. Forming a securement mechanism on the food container system with a secured section, a skirt with a separable portion, a pull tab forming part of the separable portion, and a skirt edge. The skirt configured to fold along a separation locus around the secured section. The securement mechanism also has a male snap in either the secured section or the skirt, a female snap receptacle in either the secured section or the skirt, the female snap receptacle configured to receive the male snap when the skirt is folded, and a skirt overhang configured to impede access to the skirt edge when the skirt is folded.
- Some methods may further comprise forming at least one ridge in the skirt, the ridge configured to impede access to the skirt edge when the skirt is folded and the skirt overhang overhangs the skirt edge. Some methods may even further comprise securing the securement mechanism by inserting the male snap into the female snap receptacle; positioning the skirt edge underneath the skirt overhang; and subsequently, configuring the tab to protrude such that when a user pulls the tab to open the container system, the tab irreversibly separates to provide evidence that the container has previously been opened.
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FIG. 1 is an isometric view of an assembled container system with a locking mechanism in the opened and unlocked position and means for the release of heated gases. -
FIG. 2 is an exploded isometric view of the container system. -
FIG. 3 is an isometric detail view of the locking mechanism in the opened, unlocked position. -
FIG. 4 is an isometric detail view of the locking mechanism in the opened, unlocked position as a skirt rotates around a break locus. -
FIG. 4A is a single-plane cross sectional view of the locking mechanism taken in the plane of the line C-C ofFIG. 4 . -
FIG. 5 is an isometric detail view of the locking mechanism in the closed, locked position. -
FIG. 6 is an isometric detail view of the locking mechanism wherein the break locus has been broken. -
FIG. 7 is a top view of the container system. -
FIG. 7A is a single-plane cross sectional view of the closed and locked locking mechanism taken in the plane of the line A-A ofFIG. 7 . -
FIG. 7B is a single-plane cross sectional view of the closed and locked locking mechanism taken in the plane of the line B-B ofFIG. 7 . -
FIG. 8 is a top view of the tray member. -
FIG. 9 is an isometric view of two assembled container systems in a stacked configuration. -
FIG. 10 is a single-plane cross sectional view of two assembled container systems in a stacked configuration showing the interaction between the steam vent and the activation member, the section taken in the plane of the line D-D ofFIG. 9 . -
FIG. 10A is a detail view of the interaction between the steam vent and the activation member taken along line E-E ofFIG. 10 . -
FIG. 11 is an isometric view of another embodiment of an assembled container system with a locking mechanism in the open and unlocked position. -
FIG. 12 is an exploded isometric view of the container system with locking mechanism. -
FIG. 13 is an isometric detail view of the locking mechanism in the opened, unlocked position taken along line K-K ofFIG. 11 . -
FIG. 14 is an isometric view of the locking mechanism in the closed, locked position. -
FIG. 14A is a single-plane cross sectional view of the closed and locked locking mechanism taken in the plane of the line L-L ofFIG. 14 . -
FIG. 15 is an isometric detail view of parts of the locking mechanism associated with the lid member taken along line F-F ofFIG. 12 . -
FIG. 16 is an isometric detail view of parts of the locking mechanism associated with the tray member taken along line G-G ofFIG. 12 . -
FIG. 16A is a single-plane cross sectional view of parts of the locking mechanism associated with the tray member taken in the plane of the line H-H ofFIG. 16 . -
FIG. 17 is an isometric detail bottom view of parts of the locking mechanism associated with the tray member viewed from the bottom of the tray member. - Rigid and flexible plastic containers can be used to protect and display both perishable and fragile food items such as sandwiches, salads and bakery items. The roles of plastic packaging can be expanded to meet additional demands. Presentation, brand presence, consumer desires, added value to enhance commercial competitiveness, differentiation, imagery and psychology can all be factors in package design and application. Convenience and versatility continue to shape the future of packaging, with consumers gravitating toward packaged convenience items. Thus, social and environmental considerations can be advantageously included in the development process of plastic packaging. The provision of multiple compartments in a variety of shapes and utilities in rigid plastic containers is an example of a useful advantage.
- Plastic food containers can be manufactured, for example, from Polystyrene, Polypropylene, Polyethylene Terephthalate (PET), Polylactide, Polyvinyl Chloride (PVC), or other rigid polymers. Materials that can be used include thermoformable plastics such as: Oriented Polystyrene (OPS); Talc-Filled Polypropylene (TFPP); High Impact Polystyrene (HIPS); Polypropylene (PP); Polyethylene Terepthalate (PET); Amorphous PET (APET); Crystallized Polyethylene (CPET); polylactide or polylactic acid (PLA); Polystyrene; Styrene Block Copolymer blends; and the like. Plastic food containers can comprise multiple parts—e.g., a tray and lid—or they may be a one-piece construction with a hinge that allows one portion of the container to act as the tray and the other connected portion to act as a lid. Plastic packages can be manufactured in a variety of shapes and cross-sections: circular, rectangular, square, elliptical, etc.
- The use of such plastics for holding heated food has many advantages, especially with rotisserie chicken applications. However, many currently available food packages have not been designed to cater to the consumer's needs as related to the risk of tampering or the handling of container systems for heated foods. Many of the currently available container systems have no way of indicating whether the container has been prematurely opened or tampered with. In addition, heating of the container contents can result in high temperature fluids and gases, increased pressure build-up, and so forth. A hot container can thus be painful to touch. Such constraints also place limitations on the logistical elements such as containerization of large quantities of heated food product. This disclosure provides for a unique approach that achieves these objectives, among others.
- Embodiments will be described more fully hereinafter with reference to the accompanying drawings. Inventions disclosed herein may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, example embodiments are provided so that this disclosure will be thorough and complete and will convey the scope of the invention to those skilled in the art.
- Referring to the drawings and in particular to
FIGS. 1 and 2 , there is shown a dome-shaped, rigid polymer constructfood container system 1. Thefood container system 1 can include alid member 2 andtray member 4 which forms the primary recess into which heated foodstuff, such as a rotisserie chicken, is placed. - The
lid member 2 andtray member 4 of thecontainer system 1 can be molded, through thermoforming manufacturing means, from a single sheetline of polymer material work piece into a predetermined shape and thickness as required. Thelid member 2 andtray member 4 of thecontainer system 1 may also be formed, through thermoforming manufacturing means, into a curvilinear geometry to thereby provide the end user with a variety of polygonal shapes. In thecontainer system 1, thelid member 2 has geometry that permits even mating with thetray member 4 at their peripheral edge, where even mating can imply that two structures mate evenly. Additionally, mating betweenlid member 2 andtray member 4 can be releaseably-sealable and achieved using a snap-fit grip, shown here ascomponents fit grip component 64 is the male element and the lid member snap-fit grip component 62 is the female element. -
FIG. 1 shows thecontainer system 1 with alocking mechanism 20 configured to engage when thetray member 4 andlid member 2 are positioned to permit even mating. Thelocking mechanism 20 may comprise locking means and impediment means, wherein the locking means and impediment means can be the same structure. - Locking means, as used herein, is a broad term and is used in its ordinary meaning. Locking means can include but are not limited to any of the following: anything that attaches two pieces of material together, male and female locking parts, a button and button receiver (e.g., button hole), a hook, an interference fit, a tongue and groove, a tongue and slot, a rivet, a snap, mating portions of plastic containers, etc. Locking means can also include the locking mechanisms disclosed in the Figures.
- Impediment means, as used herein, is a broad term and is used in its ordinary meaning. Impediment means can include but are not limited to any of the following: structures or voids (lack of structure) that make access to another structure more difficult, that prevent easy access to another structure, that prohibit access to another structure, that block or partially block access to another structure, that prevent access to a structure in normal use, etc.
- The locking means can be configured to lock the locking mechanism and the impediment means can be configured to deny access to at least a part of the locking means. The locking means may be a
male member 21, and afemale member 23 configured to receive themale member 21. The locking means can have an interference fit. Thelocking mechanism 20 may further comprise askirt 25 with askirt edge 27. The locking means can be separate from the sealing mechanism. The impediment means may be afinger guard 29 configured to impede access to theskirt edge 27 after the male 21 and female 23 members are joined. - The locking mechanism can take on many different configurations. For example, the Figures show the
male member 21 associated with thetray member 4 and thefemale member 23 with thelid member 2; this association can be reversed with themale member 21 formed as part of the lid and the female part formed as part of the tray. In addition, thelocking mechanism 20 can be integrated into the releaseably-sealable mechanism. The principles of thelocking mechanism 20 can be applied using different configurations from those displayed in the Figures. In addition, acontainer system 1 can have one ormore locking mechanisms 20. - Now turning to
FIG. 3 , thelocking mechanism 20 of some embodiments will be discussed in more detail. Theskirt 25 of thelocking mechanism 20 may comprise aflat portion 31 and at least onerib portion 33. The at least onerib portion 33 can increase the structural rigidity of theskirt 25. The at least onerib portion 33 may be configured to impede access to theskirt edge 27 when thelocking mechanism 20 is in the locked position, as will be explained in more detail below. Thefinger guard 29 also works to impede access to theskirt edge 27. Thefinger guard 29 may comprise a raised rib. The raised rib may have aside surface 35 configured to overhang and impede access to theskirt edge 27 when thelocking mechanism 20 is in the locked position. - Reference is now made to
FIGS. 3-5 , in discussing the locking function of thelocking mechanism 20. With thelid member 2 placed on thetray member 4, and whether or not the snap-fit components locking mechanism 20. To do this, a user may bend theskirt 25 to engage the male 21 and female 23 members. Once the male 21 and female 23 members are engaged, thelocking mechanism 20 is in an initial locked configuration (FIG. 5 ). While the male 21 and female 23 members are engaging each other, theskirt edge 27 can also abut, be adjacent to, or lie under theside surface 35 of thefinger guard 29. Theside surface 35 may be sloped or undercut so as to create an overhang. In this way, as theskirt 25 andskirt edge 27 engage or come into close proximity with thefinger guard 29 and theside surface 35, theskirt 25 andskirt edge 27 become more enclosed by thefinger guard 29 and side surface 35 (FIG. 7A-B ). This can have the advantage of impeding access to the skirt edge. For example, after themale member 21 and thefemale member 23 are in a locked position, the finger card can prevent a finger from easily accessing the skirt edge. There are various ways to impede access to theskirt edge 27. The illustratedfinger guard 29 is one such way. Other ways may include the use of different shaped ridges or slots to impede access to or to completely enclose theskirt edge 27. - The
finger guard 29 or other structures that are designed to impede access to theskirt edge 27 provide many benefits. Impeding access to theskirt edge 27 is one way of helping to ensure that thelocking mechanism 20 stays in a locked configuration. Impeding access to theskirt edge 27 helps to prevent tampering and helps to ensure that the tamper-evident mechanism works as designed, as explained below. - In addition to the
finger guard 29, the at least onerib portion 33 may also impede access to theskirt edge 27. The at least onerib portion 33 can provide many benefits including strengthening theskirt 25 and thereby increasing the rigidity of the skirt. This can help maintain theskirt 25 in the locked configuration, keeping the system securely closed. This is because as the rigidity of theskirt 25 increases, theskirt 25 in a locked configuration is more difficult to bend or flex in a manner that can enable the skirt's 25 removal from the locked configuration. A raised rib portion close to the skirt edge can also decrease access to theskirt edge 27 thus further impeding access to theskirt edge 27 when used in conjunction with thefinger guard 29 or other impediment means. - Turning to
FIGS. 5 and 6 , other embodiments of thecontainer system 1 may further comprise a tamper-evident separation mechanism 40. The tamper-evident separation mechanism 40 may comprise apull tab 42 and a break-locus 44 at which theskirt 25 is configured to break. When a user attempts to open thelock mechanism 20, the break-locus 44 is configured to break. This action serves two purposes, first a user can quickly and easily identify if or when thecontainer system 1 has already been opened or otherwise tampered with. Second, it allows a user to unseal thelid member 2 andtray member 4 and to open thecontainer system 1. - While the
locking mechanism 20 is locked and the break-locus 44 is unbroken, a user can be prevented from separating thelid member 2 andtray member 4. This should be true when, for example, there are two lockingmechanisms 20 on opposite sides of thecontainer system 1, or when the lid member and tray member are connected at a hinge and the container system has a locking mechanism on the opposite side of the container system away from the hinge. - The break-
locus 44 can comprise a weak section of material configured to allow a single piece of material to separate into two pieces (seeFIG. 6 ) when thepull tab 42 is pulled or when a user attempts to unlock thelocking mechanism 20. Thepull tab 42 may comprise grip features 46 wherein the grip features 46 may comprise ridges. The weak section can, for example, comprise a perforated section or a thin section. The perforated section can be an area defined by perforations in the material. The thin section can be defined by the relative thickness of material along one area compared to adjoining areas. The thin section can, for example, comprise a thickness of less than 0.007 inches. - The
pull tab 42 may be configured such that pulling on thepull tab 42 causes more force to be exerted at the break-locus 44 than at the locking means. This tends to cause separation at the break-locus 44 rather than, for example, separating themale member 21 from thefemale member 23 of thelocking mechanism 20. In this way, theskirt 25 breaks at the break-locus 44 when thepull tab 42 is pulled. - The
pull tab 42 may be used in concert with a grippingarea 66 to break the break-locus 44. A user can hold thepull tab 42 with one hand and a grippingarea 66 with another hand and apply force in opposite directions so as to separate the break-locus 44. - In some embodiments, as illustrated in
FIG. 9 , thecontainer system 1 may be stackable. This provides additional benefits especially to the grocer as it allows for easy display and requires less shelf space. - Returning now to
FIG. 5 , in some embodiments, thepull tab 42 of the tamper-evident mechanism 40 is mechanically linked to theskirt 25 such that when theskirt 25 folds and the male 21 and female 23 members engage, and thepull tab 42 protrudes. - Additional features in some embodiments deal with the sealing engagement of the
lid member 2 and thetray member 4. ReferencingFIGS. 2 and 3 , thecontainer system 1, comprises afirst connection lip 62 with an outwardly-extendingflange 70 that extends substantially around the perimeter of thelid 2, and asecond connection lip 64 also with an outwardly-extendingflange 68 that extends substantially around the perimeter of thetray 4. The first andsecond connection lips container system 1 when thesystem 1 is in the closed configuration. Theskirt 25 can comprise a portion ofsecond connection lip 64, and theskirt 25 can be configured to extend beyondlip 64 such that when theskirt 25 is folded along thebreak locus 44, the extended portion of theskirt 25 secures to thefirst connection lip 62. In the figures, theskirt 25 is shown as part ofsecond connection lip 64 but the disclosure also embodies the configuration where theskirt 25 is part of thefirst connection lip 62. In the later configuration, when theskirt 25 is folded it secures to thesecond connection lip 64. - The
container system 1 may have the configuration depicted inFIG. 3 , where the break locus 44 (along which theskirt 25 folds) is located along anouter edge 68 of aconnection lip 64. Theouter edge 68 of theconnection lip 64 can extend beyond theouter edge 70 of theabutting connection lip 62, as shown. This configuration can allow theskirt 25 room to fold around theouter edge 70 of theconnection lip 62. - In some embodiments, a
container system 1 suitable for food can comprise atray member 4 and alid member 2 wherein thetray 4 andlid 2 members have a connecting portion and alocking mechanism 20. Thelocking mechanism 20 may comprise arotating section 25, apre-formed connection 44 around which therotating section 25 is configured to rotate and a closure assembly. When the closure assembly is in a closed state, the closure assembly can be closed together more strongly than thepre-formed connection 44 so that attempts to open the closure assembly will disconnect the preformedconnection 44, thus unlocking thelocking mechanism 20. - In some embodiments (e.g., those illustrated in
FIG. 3 andFIG. 4 ), thecontainer system 1 may be configured such that the rotatingsection 25 is configured to pivot at afirst fulcrum 51 when thelocking mechanism 20 is in an initial unlocked configuration, where thefirst fulcrum 51 can comprise apre-formed connection 44. The rotatingsection 25 pivots at asecond fulcrum 53 when thelocking mechanism 20 is in a subsequent locked configuration and the preformedconnection 44 has disconnected. In addition, where the connecting portion can comprise a seal around the perimeter of thecontainer system 1 where thelid member 2 and thetray member 4 seal together, and thelocking mechanism 20 can be located outside the connecting portion. - With reference now to
FIGS. 7-10A , some embodiments can comprise afirst container system 1 suitable for heated food. Thefirst container system 1 can comprise atray member 4 with anactivation member 92 and alid member 2. Thelid member 2 can have anaperture 88 partially covered by aflap 90. Theaperture 88 andflap 90 can enable the release of heated gases. -
FIG. 10 shows an embodiment in which the container system is stackable. Here, theactivation member 92 is configured to depress aflap 90′ in asecond container system 1′. This can enable the release of heated gases through theaperture 88′ of thesecond container system 1′. - Also in
FIG. 10 , in some embodiments of thecontainer system 1, theactivation member 92 protrudes downward from the bottom of thetray member 4. -
FIG. 10A demonstrates how theactivation member 92 of thefirst container system 1 works with theaperture 88′ andflap 90′ of thesecond container system 1′ to release heated gases from thesecond container system 1′. As thefirst container system 1 is placed on top of thesecond container system 1′, theactivation member 92 of thefirst container system 1 interacts with theflap 90′ of thesecond container system 1′. The interaction is such that theactivation member 92 depresses theflap 90′. Thedepressed flap 90′ allows for an increase in the release of heated gases from thesecond container system 1′. - In some embodiments, with reference to
FIG. 9 , acontainer system 1 can comprise adome surface 82, at least one stackingrib 84, and anaperture surface 86. Theaperture surface 86 can comprise anaperture 88 and aflap 90. Theaperture surface 86 can be at least partially above thedome surface 82 and below the at least one stackingrib 84. This configuration of theaperture surface 86 is beneficial in that theactivation member 92 need not protrude below other points or areas in the bottom of thetray member 4. Thus when thecontainer system 1 is in an unstacked configuration, thesystem 1 will sit properly, in a stable manner, on a flat surface. - The
aperture surface 86 may optionally be sloped. The slope may be between approximately 0 and 60 degrees. The slope may also be between approximately 15 and 45 degrees. The slope may be between 25 and 35 degrees. The slopedaperture surface 86 advantageously provides clearance for the heated gases to escape thecontainer system 1. This is especially true when the container systems are in a stacked configuration. - The ability to release heated gases is a useful characteristic in the design of container systems for heated food. The presence of heated gases, such as steam, can decrease visibility within the container system. This can be a problem as consumers are less likely to purchase certain food stuffs when they cannot see the actual food item inside the container system.
- Now with reference to
FIGS. 11-17 , additional characteristics will be discussed in the context of an example embodiment. Acontainer system 101 may comprise atray 104 and alid 102. Thelid 102 andtray 104 can be sealably connected, thus forming a sealed enclosure. The illustrated sealed enclosure may be especially suited for food storage, and in particular, fish storage. The sealing connection may be formed by atongue 164 and agroove 162. Thetongue 164 may fit snuggly into thegroove 162 forming a sealed connection. The sealing connection can also be performed in other ways. Thecontainer system 101 may also optionally have a hinge between thetray 104 and thelid 102. - The
container system 101 may have at least onelocking mechanism 120. Thecontainer system 101 preferably has two lockingmechanisms 120, one on either side of thecontainer system 101. Thelocking mechanism 120 can have a means for locking thetray 104 and thelid 102 in place. The locking means can be separate from the sealing connection. - Now with particular reference to
FIG. 13 , the locking means of thelocking mechanism 120 can be amale member 121 and afemale member 123. Thelocking mechanism 120 may also have askirt 125 with askirt edge 127. Thelocking mechanism 120 may also have a break-locus 144. The break-locus 144 can be configured to allow themale member 121 and thefemale member 123 to engage into a locked position, as shown in FIG. 14. Thelocking mechanism 120 may also have apull tab 142. Thepull tab 142 may protrude from the rest of thelocking mechanism 120. - The break-
locus 144 can comprise a weak section of material configured to allow a single piece of material to separate into two pieces when thepull tab 142 is pulled or when a user attempts to unlock thelocking mechanism 120. Thepull tab 142 may comprise grip features 146 wherein the grip features 146 may comprise ridges. The weak section can, for example, comprise a perforated section or a thin section. The perforated section can be an area defined by perforations in the material. The thin section can be defined by the relative thickness of material along one area compared to adjoining areas. The thin section can, for example, comprise a thickness of less than 0.007 inches. - The
pull tab 142 can be attached to theskirt 125 and can provide a means for opening the locking mechanism, thus allowing thecontainer system 101 to be opened. A user can hold thepull tab 142 and with a pulling motion break the skirt at the break-locus 144 so as to separate thelid member 102 from thetray member 104. Pulling thepull tab 142 may also remove the pull tab 143 from thecontainer system 101. By so doing the male 121 and female 123 members may also become disengaged. - Breaking the
skirt 125 at the break-locus 144 both allows a user to open thecontainer system 101 and provides notice that thecontainer system 101 has been opened. This is especially useful to the consumer buying food stored in container systems, as a lockedcontainer system 101 can provide the consumer with assurances that the food purchased is safe to consume and that it has not been tampered with. Theunbroken locking mechanism 120 provides the consumer with this information. - Similarly to the previously disclosed embodiments, the
container system 101 may have askirt edge 127 and a means for impeding access to theskirt edge 127. When thelocking mechanism 120 is engaged, the means for impeding access to theskirt edge 127 helps to maintain thelocking mechanism 120 in the locked position. The means for impeding access to theskirt edge 127 may comprise a raisedrib 129. The raisedrib 129 may be formed integrally with or make up a part of the sealing connection. For example, the raisedrib 129 can be a part of thegroove 162. The raisedrib 129 can have aside surface 135 configured such that a part of or all of theskirt edge 127 is received into theside surface 135. Theside surface 135 may be sloped in such a way as to create an overhang at a top portion so that access to theskirt edge 127 is impeded by the overhang of theside surface 135. - The means for impeding access to the
skirt edge 127 may take other forms as well. For example, the means for impeding access can be a receiving slit configured to receive all or substantially all of askirt edge 127. Theskirt edge 127 can also be angled in such a way to make access difficult because of the manner in which the skirt edge engages another surface. Impeding access to theskirt edge 127 is one way of helping to ensure that thelocking mechanism 120 stays in a locked configuration. Impeding access to theskirt edge 127 helps to prevent tampering and it helps to ensure that the tamper-evident mechanism works as designed. - Now referring to
FIG. 14A , thelocking mechanism 120 may also have acover 150. Thecover 150 may enclose all or a part of the locking means. Thecover 150 may have ribs to increase the structural rigidity of thecover 150. In one configuration, thecover 150 can enclose the unreceiving end of thefemale member 123. This is beneficial because it protects the locking means from tampering in that a person is not able to apply pressure on the unreceiving end of thefemale member 123 to separate the male 121 and female 123 members. - Although the disclosures presented herein are in the context of certain preferred embodiments and examples, it will be understood by those skilled in the art that the disclosures extend beyond the specifically described embodiments to other alternative embodiments and/or uses of the disclosures and obvious modifications and equivalents thereof. Thus, it is intended that the scope of the disclosures herein described should not be limited by the particular embodiments described above.
Claims (44)
Priority Applications (1)
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US12/031,650 US20090206082A1 (en) | 2008-02-14 | 2008-02-14 | Tamper-evident packaging system |
Applications Claiming Priority (1)
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US12/031,650 US20090206082A1 (en) | 2008-02-14 | 2008-02-14 | Tamper-evident packaging system |
Publications (1)
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US20090206082A1 true US20090206082A1 (en) | 2009-08-20 |
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ID=40954162
Family Applications (1)
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US12/031,650 Abandoned US20090206082A1 (en) | 2008-02-14 | 2008-02-14 | Tamper-evident packaging system |
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