The subject matter disclosed herein relates to containers, particularly to packing containers, and more particularly to multi-sided reinforced packing containers suitably configured for stacking one on top of another and having more than four sides.
Packing containers are often formed from a corrugated sheet product material that is cut with a die to form a flat blank, or scored and slotted to form a flat blank. The flat blank is folded into a three-dimensional container that may be secured using an arrangement of flaps, adhesive liquids, staples or adhesive tapes.
In use, packing containers may be subjected to considerable forces during shipping, storage and stacking. While existing packing containers may be suitable for their intended purpose, the art relating to packing containers would be advanced with an increase in the strength and rigidity of packing containers, particularly with respect to stacking, while reducing the amount of materials used to form the packing containers.
This background information is provided to reveal information believed by the applicant to be of possible relevance to the present invention. No admission is necessarily intended, nor should be construed, that any of the preceding information constitutes prior art against the present invention.
An embodiment includes a multi-sided container having more than four sides and having a plurality of planar panels integrally arranged with respect to each other and with respect to a set of orthogonal x, y and z axes, the z-axis defining a direction line in which the container is configured to support a stacking load, the plurality of panels being foldable to create the multi-sided container having more than four sides. The plurality of planar panels include a first panel, a second panel, and a third panel, wherein the first panel and the second panel form a contiguity with a first fold line disposed therebetween, wherein the first panel and the third panel form a contiguity with a second fold line disposed therebetween, wherein the first panel is disposed parallel to the z-axis, the second panel is disposed orthogonal to the z-axis, and the third panel is disposed parallel to the z-axis, not parallel with the first panel, and not orthogonal to the first panel. A first strength reinforcement feature includes a first slot having a defined width with a first planar edge oriented orthogonal to the first panel and orthogonal to the z-axis, and a second planar edge oriented orthogonal to the second panel and parallel to the z-axis, the first planar edge being disposed parallel with and a distance away from the first fold line at a distance no greater than half a thickness of the first panel. The third panel includes a cut edge proximate the first fold line having a third planar edge oriented orthogonal to the third panel and orthogonal to the z-axis, the third planar edge being disposed a distance away from the first fold line at a distance no greater than half a thickness of the first panel. The third planar edge is disposed in a same plane as the first planar edge.
An embodiment includes a flat blank having a material composition and structural configuration sufficient to produce the aforementioned container.
The above features and advantages and other features and advantages of the invention are readily apparent from the following detailed description of the invention when taken in connection with the accompanying drawings.
The subject matter, which is regarded as the invention, is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying non-limiting drawings in which like elements are numbered alike in the accompanying Figures where:
A packing container, also referred to as a carton or simply as a container, may be fabricated by, for example, cutting or scoring a sheet product with a die or other type of cutting or scoring tool, such as cutting, scoring and slotting tooling and equipment, to form a flat sheet having various panels, flaps, tabs, recesses and creases. The sheet may be folded and secured using, for example, adhesive liquids, tapes or mechanical means such as staples or straps to form a three-dimensional packing container. Packing containers may be formed from a variety of sheet products. The term “sheet products” as used herein is inclusive of natural and/or synthetic cloth or paper sheets. Sheet products may include both woven and non-woven articles. There are a wide variety of nonwoven processes and they can be either wetlaid or drylaid. Some examples include hydroentangled (sometimes called spunlace), DRC (double re-creped), air laid, spunbond, carded, and meltblown sheet products. Further, sheet products may contain fibrous cellulosic materials that may be derived from natural sources, such as wood pulp fibers, as well as other fibrous material characterized by having hydroxyl groups attached to the polymer backbone. These include glass fibers and synthetic fibers modified with hydroxyl groups. Sheet product for packing containers may also include corrugated fiber board, which may be made from a variety of different flute configurations, such as A-flute, B-flute, C-flute, E-flute, F-flute, or micro-flute, for example. In an embodiment, a packing container as disclosed herein may be fabricated from a single piece of corrugated fiber board.
In use, a packing container may be subjected to various forces during handling, shipping and stacking of the packing container including, for example, compressive forces exerted between the top and bottom panels of the container. It is desirable for a packing container to withstand the various forces to protect objects in the container and to maintain a presentable appearance following shipping. It is also desirable to reduce the amount of materials used to form the packing container while maintaining design specifications for strength and rigidity.
Although the following detailed description contains many specifics for the purposes of illustration, anyone of ordinary skill in the art will appreciate that many variations and alterations to the following details are within the scope of the claims. Accordingly, the following example embodiments are set forth without any loss of generality to, and without imposing limitations upon, the claimed invention.
An embodiment, as shown and described by the various figures and accompanying text, provides an engineered multi-sided package (container) having more than four sides and having at least one strength reinforcement feature, and typically several such strength reinforcement features, that provides improved compression reinforcement as compared to a similarly configured eight-sided container absent the same strength reinforcement features disclosed herein. While an embodiment described herein depicts an eight-sided container with a plurality of panels having certain structural dimensional relationships relative to each other as an exemplary multi-sided container, it will be appreciated that the disclosed invention is not so limited and is also applicable to other multi-sided containers having more than four sides, such as five, six, seven or eight sides, with a plurality of panels having different structural dimensional relationships relative to each other but consistent with an embodiment disclosed herein.
In an embodiment, an eight-sided container 100 includes a plurality of planar panels 390 integrally arranged with respect to each other, via fold lines and/or score lines, and with respect to a set of orthogonal x, y and z axes, the z-axis defining a direction line in which the container 100 is configured to support a stacking load, the plurality of panels 390 being foldable to create the eight-sided container 100 having eight top edges and eight bottom edges as depicted. In an embodiment, the container 100 is fabricated from a corrugated fiber board with the central flutes 370 of the corrugation material oriented parallel with the z-axis (best seen with reference to
In an embodiment the plurality of planar panels 390 includes a first panel 302, a second panel 304, and a third panel 306, wherein the first panel 302 and the second panel 304 form a contiguity with a first fold line 350 disposed therebetween, wherein the first panel 302 and the third panel 306 form a contiguity with a second fold line 352 disposed therebetween, wherein the first panel 302 is disposed parallel to the z-axis, the second panel 304 is disposed orthogonal to the z-axis, and the third panel 306 is disposed parallel to the z-axis, not parallel with the first panel 302, and not orthogonal to the first panel 302. In an embodiment, the third panel 306 is angled relative to the first panel 302 to form a 45-degree angled corner of the container 100.
The container 100 includes a plurality of strength reinforcement features (SRFs) 190 with each having a similar slotted shape, which will now be described in detail with respect to representative SRFs and their structural relationship to each other and to other features of the container 100. While not all SRFs 190 will be described individually, it will be appreciated that other SRFs 190 disclosed herein but not particularly enumerated in detail are similarly configured.
A first SRF 102 has a first slot (also herein referred to by reference numeral 102) having a defined width W1 and a defined length L1. The slot of SRF 102 has a first planar edge 202 oriented orthogonal to the first panel 302 and orthogonal to the z-axis, and a second planar edge 204 oriented orthogonal to the second panel 304 and parallel to the z-axis, the first planar edge 202 being disposed parallel with and a distance away from the first fold line 350 at a distance E no greater than half a thickness of the first panel 302 (best seen with reference to
With particular reference to
With reference now back to
A second SRF 104 has a second slot (also herein referred to by reference numeral 104) having a defined width W2 and a defined length L2 with a fourth planar edge 208 oriented orthogonal to the fourth panel 312 and orthogonal to the z-axis, and a fifth planar edge 210 oriented orthogonal to the fifth panel 314 and parallel to the z-axis. The fourth planar edge 208 is disposed parallel with and a distance away from the fourth fold line 356 at a distance no greater than half a thickness of the fourth panel 312. In an embodiment, the fourth planar edge 208 is disposed in a same plane 410 (best seen with reference to
With particular reference now back to
With particular reference still to
In an embodiment, the first slot 102 and the third slot 106 have a defined distance D1 therebetween, and the second slot 104 and the fourth slot 108, have a defined distance D2 therebetween, where the ratios of D1/L1, D1/L3, D2/L2 and D2/L4 are each equal to or greater than one. In an embodiment L1=L2=L3=L4. In an embodiment W1=W2=W3=W4.
In addition to the foregoing described strength reinforcement features noted as SRF and SRF2 and with reference to
As noted herein above, not all SRFs 190 have been described individually, but it will be appreciated that other SRFs 190 disclosed or illustrated herein but not particularly enumerated in detail are similarly configured. That said, and for completeness of disclosure, reference is now made to
From the foregoing description of the container 100, and with particular reference to
In an embodiment, the flat blank 300 is fabricated according to a process that includes cutting or partially cutting the corrugated fiber material to produce cuts (depicted as solid lines in
The improved compression strength, and uniformed deflection curves during load, can be seen with reference to
The profiles in
The profiles in
As seen by comparing the peaks of the ten test runs between
Reference is now made to
It has been found through empirical compression testing that a multi-sided container having more than four sides, and having the SRF2's alone or in combination with the SRF's and/or the SRF3's as herein disclosed, provides a container having improved stacking compression strength as compared to a similarly shaped and sized control sample container absent the SRF2's. Stated alternatively, it has been found that inclusion of the SRF2's as herein disclosed provides a not insubstantial incremental improvement in the stacking compression strength of the multi-sided container equipped with such SRF2's.
As used herein, the terms orthogonal (perpendicular) and parallel should be interpreted as being substantially orthogonal (perpendicular) and substantially parallel, respectively. For example, the term orthogonal in relation to planar surfaces should be interpreted to include two planar surfaces having an angle therebetween from 85-degrees to 95-degrees, or more typically from 88-degrees to 92-degrees, depending on whether the measurement is taken when the container is in a non-compressed state or a compressed state. And the term parallel in relation to planar surfaces should be interpreted to include two planar surfaces having an angle therebetween from +5-degrees to −5-degrees, or more typically from +2-degrees to −2-degrees, depending on whether the measurement is taken when the container is in a non-compressed state or a compressed state.
As used herein, any reference to a dimension or a percentage value should not be construed to be the exact dimension or percentage value stated, but instead should be understood to mean a dimension or percentage value that is “about” the stated dimension or percentage value so to accommodate dimensional tolerances, except where it is clear from the description and usage as presented herein.
While the invention has been described with reference to example embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the claims. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best or only mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims. Also, in the drawings and the description, there have been disclosed example embodiments and, although specific terms and/or dimensions may have been employed, they are unless otherwise stated used in a generic, example and/or descriptive sense only and not for purposes of limitation, the scope of the claims therefore not being so limited. Moreover, the use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another. Furthermore, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item. Additionally, the term “comprising” as used herein does not exclude the possible inclusion of one or more additional features.
This application claims the benefit of U.S. Provisional Application Ser. No. 62/486,076, filed Apr. 17, 2017, which is incorporated herein by reference in its entirety.
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