The present invention generally pertains to reclosable packaging cases. More particularly, the present invention relates to a reclosable packaging case, particularly for transporting and storing frozen food products such as frozen dough products, a blank for forming the reclosable packaging case and a method of forming or closing the reclosable packaging case.
Freezers (e.g., walk-in freezers, reach-in freezers, etc.) play pivotal roles in many food service businesses such as restaurants or cafeterias. Freezing preserves food for extended periods of time until the food is ready to be used. Specifically, freezing prevents the growth of microorganisms that cause food spoilage and foodborne illness. In the food service industry, various types of food are frozen, including raw meat/seafood, pre-cooked meat/seafood, desserts, pre-baked baked goods and dough/batter for baked goods.
Food stored in a freezer continuously at or below 0° F. can be kept in the freezer essentially indefinitely from a safety perspective. However, from a quality perspective, frozen foods are typically stored in a freezer for a couple months, perhaps up to a year depending on the food product. Food stored beyond these time frames can lose color, texture and flavor for various reasons. However, food stored within these time frames can still experience some form of quality loss.
In the food service industry, foods that are to be stored in freezers are often packaged in cardboard boxes. However, when such boxes are reclosed after being initially opened, substantial gaps in the packaging typically occur. Food products that continue to be freezer stored in the reclosed boxes have an increased potential for quality deterioration due to the gaps in the packaging. If a frozen food loses moisture (e.g., via gaps in its packaging) as it is stored in the freezer, the food can develop an undesirable dried surface condition known as “freezer burn”. Additionally, oxygen present in the freezer can interact with the frozen food (e.g., via gaps in its packaging) and cause changes to the flavor and color of the frozen food. With the above in mind, there is a need in the art to minimize quality loss of food stored in freezers and to maximize the period of time food can be stored in a freezer without losing quality.
In accordance with the present invention, a reclosable packaging case is provided wherein any gaps which occur upon reclosure of the packaging case are minimized. The reclosable packaging case features one or more inner top flaps for selectively covering the interior of the case and one or more outer top flaps for selectively covering the inner top flaps, where portions of the outer top flaps are configured to be bent and inserted into openings in the inner top flaps. In particular, the portions of the outer flaps are configured to be bent at pre-established angles and locations to align with the openings in the inner flaps to ensure minimal gaps in the packaging case once the outer flap portions have been inserted into the openings in the inner top flaps.
In one embodiment, the reclosable packaging case includes four interconnected panels folded to establish an interior of the packaging case into which a product is to be loaded. Two inner top flaps selectively cover the interior and two outer flaps selectively cover the inner top flaps. Each outer top flap has two corner portions configured to be bent along corner fold lines and inserted into openings established in the inner top flaps. The angles and locations of the corner fold lines in the outer top flaps and the openings in the inner top flaps are pre-established such that the reclosable packaging case has minimal gaps once the corner portions have been inserted into the openings in the inner top flaps. Preferably, the inner and outer top flaps are rectangular in shape and the corner fold lines and the openings are angled approximately 45° from the rectangular edges of their respective flaps. Preferably, when each corner portion is bent along its corner fold line relative to an outer top flap and inserted into a respective opening in an inner top flap, the corner portion is angled approximately 15° or less from the outer top flap.
In another embodiment, a reclosable packaging case includes graphics upon its inner and outer top flaps for indicating whether the reclosable packaging case is properly closed or reclosed. Each of the one or more outer top flaps of the reclosable packaging case has an outer top graphic that complements an inner top graphic on an inner top flap of the packaging case. When a portion of an outer top flap is correctly inserted into a corresponding opening in an inner top flap, the outer top flap's graphic and the inner top flap's graphic together establish an image that indicates to a user that the packaging case has been properly closed or reclosed and with its minimal gaps.
The invention also encompasses a unitary blank for forming the reclosable packaging case. In one embodiment, the blank includes four interconnected panels, each panel having a top flap and a bottom flap. Two of the top flaps have two corner portions, where each corner portion is at least partially defined by a corner fold line having a pre-established angle and location. Each of the other top flaps has two separate perforation patterns, with each perforation pattern defining a portion of the top flap that is to be at least partially detached from the top flap to form an opening during a method of forming a reclosable packaging case or a method of reclosing the packaging case. Preferably, each portion of a top flap defined by a perforation pattern is only to be partially detached from the top flap in order to establish a hinged tab that defines, at least in part, the formed opening. The locations and angles of the longitudinal axes of the perforation patterns are pre-established and complement the corner fold lines such that, once the blank is formed into the reclosable packaging case and the corner portions have been inserted into the openings in the inner top flaps, the reclosable packaging case has minimal gaps. Preferably, the top flaps are rectangular in shape and the corner fold lines and the longitudinal axes of the perforation patterns are angled approximately 45° from the rectangular edges of their respective flaps.
In another variation, the blank for forming the reclosable packaging case includes graphics upon its top flaps for indicating whether the reclosable packaging case is properly closed or reclosed once the blank is formed into the reclosable packaging case. Each of the outer top flaps of the blank has an outer top graphic that complements an inner top graphic on an inner top flap of the blank. After the blank is used to form the reclosable packaging case and a portion of an outer top flap is correctly inserted into a corresponding opening in an inner top flap, the outer top flap's graphic and the inner top flap's graphic together establish an image that indicates to a user that the packaging case has been properly closed or reclosed and has minimal gaps.
The invention encompasses a method for forming and/or reclosing a reclosable packaging case to minimize gaps occurring in the reclosed packaging case. In accordance with the method, portions of one or more outer top flaps of the case are bent and inserted into openings in one or more inner top flaps of the case. In particular, the portions of the one or more outer flaps bent at pre-established angles and locations to ensure minimal gaps in the packaging case once the portions have been inserted into the openings in the inner top flaps.
Another method aspect of the invention covers forming and/or reclosing a reclosable packaging case including aligning graphics of inner and outer top flaps of the packaging case to ensure the packaging case is properly closed or reclosed and has minimal gaps. Each of the one or more outer top flaps of the reclosable packaging case has an outer top graphic that complements an inner top graphic on an inner top flap of the packaging case. When a portion of an outer top flap is correctly inserted into a corresponding opening in an inner top flap, the outer top flap's graphic and the inner top flap's graphic together establish an image that indicates to a user that the packaging case has been properly closed or reclosed and has minimal gaps.
Additional objects, features and advantages of the invention will become more readily apparent from the following detailed description of the invention when taken in conjunction with the drawings wherein like reference numerals refer to common parts in the several views.
Detailed embodiments of the present invention are disclosed herein. However, it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale, and some features may be exaggerated or minimized to show particular details. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to employ the present invention.
As used in this specification and the appended claims, the singular forms “a”, “an” and “the” include plural referents unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term “or” is generally employed in its sense including “and/or” unless the content clearly dictates otherwise.
In the description of embodiments disclosed herein, any reference to direction or orientation is merely intended for convenience of description and is not intended in any way to limit the scope of the present invention. Relative terms such as “lower,” “upper,” “horizontal,” “vertical,”, “above,” “below,” “up,” “down,” “top” and “bottom”, as well as derivatives thereof (e.g., “horizontally,” “downwardly,” “upwardly,” etc.), should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description only and do not require that the apparatus be constructed or operated in a particular orientation. Terms such as “attached,” “affixed,” “connected,” “coupled,” “interconnected,” and similar refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.
With initial reference to
Top portion 18 covers the interior of packaging case 10 and includes a pair of inner top flaps, first inner top flap 22 and second inner top flap 23, and a pair of outer top flaps, first outer top flap 24 and second outer top flap 25. Preferably, each of top flaps 22-25 is rectangular in shape. However, it will be recognized by those skilled in the art that the shape of the top flaps can vary while still functioning in accordance with the invention. As shown in
First and second inner top flaps 22 and 23 are hingedly connected to first and second side walls 12 and 13, respectively, along first and second inner top fold lines 28 and 29, respectively. In particular, first and second inner top flaps 22 and 23 are intended to be folded inwardly towards one another along top fold lines 28 and 29, respectively, to at least partially cover the interior of packaging case 10. As perhaps best shown in part by the dashed outlines in
First and second outer top flaps 24 and 25 are hingedly connected to first and second end walls 14 and 15, respectively, along first and second outer top fold lines 37 and 38, respectively. Specifically, first and second outer top flaps 24 and 25 are folded at outer top fold lines 37 and 38, respectively, towards one another to at least partially cover the exterior surfaces of inner top flaps 22 and 23. Corner portions of outer top flaps 24 and 25 are inserted into openings 32-35 of inner flaps 22 and 23 when the reclosable packaging case is in its closed configuration as shown in
With reference to
First panel 61 includes first side wall 12 hingedly connected to first inner top flap 22 along first inner top fold line 28, a first bottom flap 78 along a first bottom fold line 79, and second panel 62 along first wall fold line 71. First panel 61 further includes a connecting flap 82 hingedly connected to first side wall 12 along a connecting fold line 83. Connecting flap 82 is used to connect first panel 61 to fourth panel 64 as described further below regarding a method for forming reclosable packaging case 10 using blank 60. In blank 60, first inner top flap 22 does not have first and second openings 32 and 33 but rather a first perforation pattern 88 and a second perforation pattern 89. The portions (not separately labeled) of first inner top flap 22 that are enclosed by first perforation pattern 88 or second perforation pattern 89 are to be at least partially detached from first inner top flap 22 to form first opening 32 or second opening 33, respectively, when reclosable packaging box 10 is in its closed or partially closed configuration as shown in
Second panel 62 of blank 60 includes first end wall 14 hingedly connected to first panel 61 along first wall fold line 71, third panel 63 along second wall fold line 72, first outer top flap 24 along first outer top fold line 37, and a second bottom flap 92 along a second bottom fold line 93. First outer top flap 24 has first and second corner portions 41 and 42 that are at least partially defined by first and second corner fold lines 46 and 47, respectively. Preferably, each of first and second corner fold lines 46 and 47 is a straight line angled approximately 45° from first outer top fold line 37. However, other shapes, angles, sizes and positions of corner fold lines than shown in
Third panel 63 includes second side wall 13 hingedly connected to second panel 62 along second wall fold line 72, second inner top flap 23 along second inner top fold line 29, a third bottom flap 96 along a third bottom fold line 97, and fourth panel 64 along third wall fold line 73. In blank 60, second inner top flap 23 does not have third and fourth openings 34 and 35 but rather a third perforation pattern 103 and a fourth perforation pattern 104. The portions (not separately labeled) of second inner top flap 23 which are enclosed by third perforation pattern 103 or fourth perforation pattern 104 are to be at least partially detached from second inner top flap 23 to form third opening 34 or fourth opening 35, respectively, when reclosable packaging box 10 is in its closed or partially closed configuration as shown in
Fourth panel 62 of blank 60 includes second end wall 15 hingedly connected to third panel 63 along third wall fold line 73, second outer top flap 25 along second outer top fold line 38, and a fourth bottom flap 108 along a fourth bottom fold line 109. Second outer top flap 25 has third and fourth corner portions 43 and 44 that are at least partially defined by third and fourth corner fold lines 48 and 49, respectively. Preferably, third and fourth corner fold lines 48 and 49 are each angled approximately 45° from second outer top fold line 38. However, other angles, sizes and positions of corner fold lines than shown in
With reference to
In an alternative embodiment, corner portions 41-44 are not folded and inserted into openings 32-35 to initially form the packaging case. Rather, top outer flaps 24 and 25 are folded relative to end walls 14 and 16, respectively, without folding corner portions 41-44, and secured to top inner flaps 22 and 23 by means already known to those skilled in the art. Once the packaging case is formed and opened for the first time, corner portions 41-44 can then be folded inwardly along their respective corner fold lines relative to their respective top outer flaps and then inserted into openings 32-35 to reclose the packaging case.
The present invention also pertains to a method of reclosing a reclosable packaging case after it has been opened. After reclosable packaging case 10 is opened, e.g., by unfolding one or more of top flaps 22-25 away from the interior of the packaging case, reclosable packaging case 10 can be reclosed in a manner which advantageously minimizes any gaps in the reclosed packaging case. More specifically, top inner flaps 22 and 23 are folded inwardly along top inner fold lines 39 and 29, respectively, to at least partially cover the interior. Then each of corner portions 41-44 of top outer flaps 24 and 25 is folded inwardly along its respective corner fold lines relative to its respective top outer flap. After or while corner portions 41-44 are being folded, top outer flaps 24 and 25 are folded inwardly along top outer fold lines 37 and 38, respectively, to at least partially cover top inner flaps 22 and 23. Then, corner portions 41-44 are inserted into openings 32-35 to form a closed configuration of reclosable packaging case 10 as shown in
In a modified embodiment of the present invention represented in
Although described with respect to preferred embodiments of the invention, it should be recognized that various changes and/or modifications could be made to the invention without departing from the spirit thereof. In general, the invention is only intended to be limited by the scope of the following claims.
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Number | Date | Country |
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1498356 | Jan 2005 | EP |
1498356 | Jan 2005 | EP |
WO-2007074412 | Jul 2007 | WO |
Entry |
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Machine Translation of EP 1,498,356 A2 (Year: 2005). |
Number | Date | Country | |
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20220033130 A1 | Feb 2022 | US |