The present disclosure relates generally to containers formed from a foldable sheet material and more particularly to a secure re-closeable paperboard container.
Paperboard containers are used extensively in packaging a wide variety of products. Many of these products can be conveniently stored in the container after the container is initially opened. However, many paperboard containers are unable to reclose or fail to remain closed after an initial opening. In the case of many consumer products (e.g., food products, cleaning products, etc.), this failure to remain closed may lead to spillage, leakage, or spoilage of the contents within the paperboard container. Previous attempts to develop an effective re-closeable paperboard container have resulted in complex designs which consume significantly more paperboard and require additional effort to manufacture or assemble.
Many paperboard containers include a tamper-evident feature such as a seal or a tear-away strip. These containers are initially opened by breaking the seal. Tamper-evident packaging ensures consumers that the container has not been previously opened. However, such features may be difficult or expensive to manufacture, thereby increasing the cost of the container and the product contained therein. Accordingly, there exists a need for a simple and effective paperboard container which overcomes the disadvantages associated with conventional paperboard container designs.
One implementation of the present disclosure is a re-closeable container. The container includes a base having opposing front and rear panels, opposing side walls extending between the front and rear panels, and a bottom panel connected with lower edges of the front, rear, and side walls. The front panel includes a tear-away portion defined by a score line. The container further includes a cover pivotally connected with an upper edge of the rear panel for movement between an open position and a closed position, the cover having a top portion extending between the front and rear panels when the cover is in the closed position, and a front portion connected with the top portion and disposed in close parallel alignment with the front panel when the cover is in the closed position. The container further includes a locking panel hingedly connected with an upper edge of the front panel and disposed between the front panel of the base and the front portion of the cover when the cover is in the closed position, the locking panel having a first tab, a second tab, and a tear-away portion defined by score lines. The tear-away portion of the locking panel is fixedly attached to both the front portion of the cover and the tear-away portion of the front panel such that initial movement of the cover from the closed position toward the open position causes the locking panel and the front panel to tear along the score lines and causes both tear-away portions to pivotally move with the cover. In some embodiments, the tearing of the locking panel forms a pair of engagement surfaces projecting from an inner surface of the front portion of the cover. The first and second tabs are configured to engage the engagement surfaces for securing the cover in the closed position and the engagement is accompanied by at least one of an audile feedback and a tactile feedback.
Another implementation of the present disclosure relates to a method for constructing a re-closeable container. The method includes providing a base having opposing front and rear panels, opposing side walls extending between the front and rear panels, and a bottom panel connected with lower edges of the front, rear, and side walls, wherein the front panel includes a tear-away portion defined by a score line. The method further includes providing a cover pivotally connected with an upper edge of the rear panel for movement between an open position and a closed position, the cover having a top portion extending between the front and rear panels when the cover is in the closed position, and a front portion connected with the top portion and disposed in close parallel alignment with the front panel when the cover is in the closed position. The method further includes providing a locking panel hingedly connected with an upper edge of the front panel and disposed between the front panel of the base and the front portion of the cover when the cover is in the closed position, the locking panel having a first tab, a second tab, and a tear-away portion defined by score lines. The method further includes fixedly attaching the tear-away portion of the locking panel to the tear-away portion of the front panel and fixedly attaching the tear-away portion of the locking panel to an inner surface of the front portion of the cover with the cover in the closed position such that the fixed attachments cause tearing of the locking panel and the front panel along the score lines upon moving the cover from the closed position toward the open position.
In some embodiments, the tearing of the front panel forms a first engagement surface projecting from an edge of the tear-away portion of the front panel and a second engagement surface projecting from an edge of a fixed portion of the front panel. The fixed portion of the front panel may include an alignment surface substantially perpendicular to the second engagement surface and disposed between the second engagement surface and the bottom panel. Orienting a surface of the tear-away portion of the locking panel in parallel abutment with the alignment surface may cause the first engagement surface to align with the second engagement surface.
The foregoing is a summary and thus by necessity contains simplifications, generalizations, and omissions of detail. Consequently, those skilled in the art will appreciate that the summary is illustrative only and is not intended to be in any way limiting. Other aspects, inventive features, and advantages of the devices and/or processes described herein, as defined solely by the claims, will become apparent in the detailed description set forth herein and taken in conjunction with the accompanying drawings.
Before discussing the details of the re-closeable folded container and/or the components thereof, it should be noted that references to “front,” “back,” “rear,” “side,” “upper,” “lower,” “inner,” “outer,” “right,” and “left” in this description are merely used to identify the various elements as they are oriented in the FIGURES. These terms are not meant to limit the element which they describe, as the various elements may be oriented differently in various applications.
It should further be noted that for purposes of this disclosure, the terms “coupled” or “attached” mean the joining of two members (e.g., surfaces, edges, panels, etc.) directly or indirectly to one another. Such joining may be stationary in nature or moveable in nature. Such joining may be achieved with the two members or the two members and any additional intermediate members. Such joining may be permanent in nature (e.g., fixedly attached, secured, bonded, etc.) or temporary in nature (e.g., releasably attached, engaged, etc.).
Referring generally to the FIGURES, a re-closeable folded container and components thereof are shown according to an exemplary embodiment. In some implementations, the container may be used for packaging food products. The container may be made of any type of foldable sheet material (e.g., paperboard, paper, cardboard, sheet metal, foldable plastics, etc.). In some embodiments, the container may be constructed from a die-cut paperboard blank. According to other embodiments, the paperboard blank may be provided as a preglued sleeve or tube that is deliverable to a cartoner for filling the container and closing/sealing the carton. All such variations are intended to be included within the scope of this disclosure.
The re-closeable folded container may be a six-sided rectangular container including a front panel, a bottom panel, a rear panel, and a plurality of side panels which interlock and/or overlap to form left-side and right-side walls. The size and shape of the side panels may be optimized via an advantageous die cut pattern to facilitate rapid manufacturing and/or packaging operations and to make efficient use of the folded sheet material. The container includes a re-closeable cover pivotally attached (e.g., along a fold line) with an upper edge of the rear panel and movable between an open position and a closed position. In some embodiments, the cover includes a top portion which is parallel to the bottom panel when the cover is in the closed position and a front portion which is in close parallel alignment with the front panel when the cover is in the closed position.
Advantageously, the front panel may be hingedly attached along an upper edge to a locking panel. The locking panel may include one or more perforated tabs along the hinged edge. The locking panel may be folded into parallel abutment with an outward-facing surface of the front panel. The locking panel includes a tear-away portion which is fixedly attached to an inner surface of the front portion of the cover. When the container is initially opened, the tear-away portion may break free from the hinged tabs. Upon re-closure, the tabs may reengage the tear away portion fixedly attached to the cover for securing the cover in the closed position. Such reengagement may be accompanied by an audible or tactile feedback (e.g., a click, a snap, etc.) indicating a successful re-closure.
Referring now to
Base 110 is shown to include a front panel 112 and an opposing rear panel 114. Front panel 112 and rear panel 114 may be flat, parallel panels offset by a pair of opposing side walls 116,118. Side walls 116,118 may be parallel side walls (e.g., a left-side wall and a right-side wall) extending between front panel 112 and rear panel 114. Base 110 is further shown to include a bottom panel 119 connected with lower edges of front panel 112, rear panel 114, and side walls 116,118.
In some embodiments, front panel 112, rear panel 114, and/or bottom panel 119 may by substantially rectangular panels formed from a single layer of folded sheet material. For example, a larger rectangular panel may be folded in two locations (e.g., fold line 132 and fold line 134) to form front panel 112, rear panel 114, and bottom panel 119. Side walls 116,118 may be formed from a plurality of interlocking and/or overlapping side panels hingedly connected front panel 112, rear panel 114, or bottom panel 119. In some embodiments, side walls 116,118 may be partially formed by one or more panels attached to a portion of cover 120. The side panels may be fastened together (e.g., via an adhesive) for holding container 100 in a folded condition.
Still referring to
Front portion 124 is shown as a flat panel attached to top portion 122 along a fold line 138. Front portion 124 may be disposed in close parallel alignment with front panel 112 when cover 120 is in the closed position. In some embodiments, front portion 124 includes a curved bottom edge 126. Edge 126 may provide an aesthetically pleasing visual appearance for container 100 (e.g., by emulating the appearance of a “smile”). In some embodiments, front panel 112 also includes a curved edge 113. Edge 113 may have a radius of curvature substantially equivalent to the radius of curvature of edge 126.
In some embodiments, container 100 may have a width (e.g., a distance between side walls 116,118) exceeding both a height (e.g., a distance between bottom panel 119 and top portion 122) and a depth (e.g., a distance between front panel 112 and rear panel 114) of container 100. In some embodiments, the dimensions of container 100 may be selected such that container 100 has a height-to-width aspect ratio substantially equivalent to a depth-to-height aspect ratio. For example, the ratio of the distance between bottom panel 119 and top portion 112 (e.g., the container height) to the distance between left wall 116 and right wall 118 (e.g., the container width) may be substantially equivalent to the ratio of the distance between front panel 112 and rear panel 114 (e.g., the container depth) to the distance between bottom panel 119 and top portion 112 (e.g., the container height). In some embodiments, one or more aspect ratios of container 100 may be close (e.g., within 15%, within 20%, etc.) to the “aesthetic golden ratio” (i.e., about 1:1.618).
Still referring to
Referring now to
In some embodiments, front panel 112 includes a fixed portion 113 and a tear-away portion 115. Fixed portion 113 and tear-away portion 115 may be separated by a weakened area or line formed in the material of the blank. For example, the weakened area or line may be defined by an area of relatively reduced thickness, or may have other weakening features such as perforations or scoring (shown by way of example as a score line 117, although any other form of a providing a tear line may be used for the various score lines described herein and are intended to be within the scope of this disclosure). Score line 117 may be a perforated boundary between fixed portion 113 and tear-away portion 115. In some embodiments, score line 117 may be a cut entirely through blank 200 in all but a plurality of connection points (e.g., nicks). The connection points may form a weak connection between fixed portion 113 and tear-away portion 115 such that tear-away portion 115 may be readily separated (e.g., torn-away, removed, detached, etc.) from fixed portion 113 by applying minimal separation force. In some embodiments, the connection points may be short unbroken segments extending between fixed portion 113 and tear-away portion 115. In some embodiments, the connection points may have a width (e.g., in a direction along score line 117) of approximately 0.02 inches. In other embodiments, the connection points may have a larger or smaller width as may be suitable for alternate materials and/or implementations.
Still referring to
Still referring to
Locking panel 140 is shown to include a first tab 142, a second tab 144, and a tear-away portion 146. In some embodiments, tabs 142,144 may be hingedly connected to fixed portion 113 of front panel 112. Tabs 142,144 may be rectangular portions of locking panel 140. In some embodiments, tab 142 is attached to front panel 112 along a first end portion of fold line 130 and tab 140 is attached to front panel 112 along a second end portion of fold line 130. In some embodiments, tear-away portion 146 is a substantially “T-shaped” portion of locking panel 140. Tear-away portion 146 may be hingedly connected to tear-away portion 115 of front panel 112.
In some embodiments, tab 142 may be separated (e.g., distinguished, partitioned, etc.) from tear-away portion 146 by a score line 147. Similarly, tab 144 may be separated from tear-away portion 146 by a score line 149. Score lines 147,149 may be perforated boundaries between tear-away portion 146 and tabs 142,144. In some embodiments, score lines 147,149 may be a cut entirely through blank 200 in all but a plurality of connection points (e.g., nicks). The connection points may form a weak connection between tear-away portion 146 and tabs 142,144 such that tear-away portion 146 may be readily separated from fixed portion tabs 142,144 by applying minimal separation force. In some embodiments, the connection points may be short unbroken segments extending between tear-away portion 146 and tabs 142,144. In some embodiments, the connection points may have a width (e.g., in a direction along score line 117) of approximately 0.02 inches. In other embodiments, the connection points may have a larger or smaller width as may be suitable for alternate materials and/or implementations.
In some embodiments, line 130 may be a perforated or partially broken line (e.g., slotted, incrementally cut, etc.). Such perforation may facilitate the rotation locking panel 140 relative to front panel 112. In some embodiments, tabs 142,144 may be attached to fixed portion 113 only at the corners of tabs 142,144 along line 130. For example, a slot or notch may be cut through blank 200 (e.g., along line 130) between the corners of tabs 142,144. This slot may allow tabs 142,144 to rotate more easily relative to fixed portion 113. In some embodiments, the slot may have a length (e.g., along line 130) between 0.4 and 0.7 inches. In some embodiments, the slot may have a length of approximately 0.5 inches. Line 130 may have a plurality of such slots along an entire length of line 130. In some embodiments, the slots may be separated by unbroken portions of line 130. Such unbroken portions may have lengths between 0.16 and 0.18 inches. In some embodiments, the unbroken lengths may be approximately 0.17 inches. In other embodiments, the slot lengths and unbroken lengths may be smaller or larger as may be suitable for alternate materials and/or implementations.
Still referring to
Upon folding blank 200 into container 100, two or more of side panels 151-160 may overlap and/or interlock to form side walls 116,118 (as shown in
Referring now to
Container 100 may further be assembled by folding blank 200 along fold line 132. Side panels 151 and 153 may be folded along fold lines 161,163 and fastened together. Side panels 152 and 154 may be folded along fold lines 162,164 and fastened together. In some embodiments, an outward-facing surface of side panels 151,152 may be bonded to an inward-facing surface of side panels 153,154. In other embodiments, an inward-facing surface of side panels 151,152 may be bonded to an outward-facing surface of side panels 153,154.
Referring now to
Referring now to
In some embodiments, the adhesive between locking panel 140 and front panel 112 may not fasten tabs 142,144 to front panel 112. Accordingly, tabs 142,144 may be free to rotate about fold line 130 if the connection between tabs 142,144 and tear-away portion 146 is broken. In some embodiments, the adhesive between locking panel 140 and front panel 112 may extend only between tear-away portion 146 and tear-away portion 115. In other words, neither tear-away portion 146 nor tabs 142,144 may be fastened to fixed portion 113.
Still referring to
Referring now to
Advantageously, the separation of tear-away portions 115,146 upon an initial opening of cover 120 may function as a tamper evident feature for container 100. For example, a consumer may reasonably conclude that container 100 has not been opened if tear-away portions 115,146 remain attached to fixed portion 113 and tabs 142,144 respectively. Such tamper evidence may provide a consumer with an assurance of product integrity, quality, and/or freshness with respect to the contents of container 100.
In some embodiments, the separation of tear-away portion 146 from tabs 142,144 may create new surfaces 143, 145, 182, and 184. Surfaces 143,145 are shown projecting from an inner surface of front portion 124 along a side of tear-away portion 146. Surfaces 182,184 are shown opposite fold line 130 extending along a side of tabs 142,144. Each of surfaces 143,145,182,184 may be a rectangular surface having a height equal to the thickness of the sheet material used to form container 100 and a width equal to the width of tabs 142,144. Surface 143 may be configured to align with surface 182 and surface 145 may be configured to align with surface 184 when cover 120 is in the closed position.
Similarly, the separation of tear-away portion 115 from fixed portion 113 may create new surfaces 188 and 189. Surface 188 may be a curved surface along edge 111 of tear-away portion 115. Surface 189 may be a curved surface along a side of fixed portion 113. Each of surfaces 188,189 may have a height equivalent to the thickness of the sheet material used to form container 100 and may follow a path defined by score line 117. Surface 188 may be configured to align with surface 189 when cover 120 is in the closed position. Advantageously, the formation of mating surfaces 143,182; 145,184; and 188,189 via the separation of previously unitary panels may ensure the proper alignment of such surfaces when container 100 is re-closed.
Referring again to
As shown in
Referring now to
In some embodiments, when cover 120 is opened, tabs 142,144 may be rotated upwardly and outwardly about fold line 130. It is contemplated that after container 100 has been opened, a portion of the contents may be removed and cover 120 may be returned to the closed position (e.g., to protect and/or preserve the remaining contents). When cover 120 is re-closed, tabs 142,144 may be rotated in a downward and inward direction (e.g., toward fixed portion 113). During such downward and inward rotation, an inward-facing surface 193 of tear-away portion 146 may engage edges 195 of tabs 142,144 (e.g., edges opposite fold line 130). Edges 195 may slide along surface 193 until cover 120 reaches the closed position.
When cover 120 reaches the closed position, tabs 142,144 may “snap” into a secure, closed position in which surfaces 182,184 engage surfaces 143,145. Advantageously, such engagement may be accompanied by an audible and/or tactile feedback (e.g., a snap, a click, etc.) indicative of an effective reclosing. Such engagement may also releasably secure cover 120 in the closed position, thereby preventing container 100 from opening inadvertently.
Referring now to
When cover 120 is rotated into the closed position, top portion 124 may move into close parallel alignment with fixed portion 113. Curved surface 188 may engage curved surface 189 when cover 120 has reached a completely closed position. This engagement between surface 188 and surface 189 may ensure a proper vertical alignment of cover 120 in the closed position. Advantageously, the existence of three parallel layers along the length of edge 111 may facilitate the proper horizontal alignment of mating surfaces 188,189. For example, an inward facing surface 192 of tear-away portion 146 may move into parallel abutment with an outward-facing surface 194 of fixed portion 113. This parallel abutment may ensure that surface 188 is properly horizontally aligned with surface 189. This parallel abutment may also ensure that surfaces 182,184 are properly aligned with surfaces 143,145.
The construction and arrangement of the elements of the re-closeable folded container as shown in the exemplary embodiments are illustrative only. Although only a few embodiments of the present disclosure have been described in detail, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited. For example, elements shown as integrally formed may be constructed of multiple parts or elements. The elements and assemblies may be constructed from any of a wide variety of materials that provide sufficient strength or durability, in any of a wide variety of colors, textures, and combinations. Additionally, in the subject description, the word “exemplary” is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word “exemplary” is intended to present concepts in a concrete manner. Accordingly, all such modifications are intended to be included within the scope of the present disclosure. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the preferred and other exemplary embodiments without departing from the scope of the appended claims.
The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. Any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating configuration, and arrangement of the preferred and other exemplary embodiments without departing from the scope of the appended claims.
This application is a continuation of International Application No. PCT/US2014/021042, filed Mar. 6, 2014, entitled “CONTAINER WITH SECURE AUDIBLE CLOSURE”, which claims the benefit of U.S. Provisional Patent Application No. 61/785,378, filed Mar. 14, 2013, entitled “CONTAINER WITH SECURE AUDIBLE CLOSURE,” both of which are incorporated herein by reference in their entireties.
Number | Date | Country | |
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61785378 | Mar 2013 | US |
Number | Date | Country | |
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Parent | PCT/US2014/021042 | Mar 2014 | US |
Child | 14848952 | US |