Packaging

Abstract

To prevent packages from being tilted when the packages are stacked, according to the packages each provided with an overlapping part obtained by overlapping an upper lid.SOLUTION: A package 1 comprises lower outside flaps 21, 22 extended via a lower outside ruled line a1 on a bottom face side of first side plates 11, 12; a lower inside flap extended via a lower inside ruled line a2 on the bottom face side of second side plates 13, 14; upper outside flaps 31, 32 extended via an upper outside ruled line b1 on a top face side of the first side plates 11, 12; and upper inside flaps 33, 34 extended via an upper inside ruled line b2 on a top face side of the second side plates 13, 14. The lower outside flaps 21, 22 each have a size for closing a bottom face by butting against each other via being folded at the lower outside ruled line a1. The upper outside flaps 31, 32 each have a size for closing a top face by overlapping on part of the top face by being bent at the lower outside ruled line a1. A space between the lower outside ruled line a1 and the upper outside ruled line b1 is longer than between the lower inside ruled line a2 and the upper inside ruled line b2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a package. [Background technology]

[0002] In packages used for the distribution, storage, etc. of packaged items, where the top flap is secured in place with adhesive tape, there is a technique for protecting the packaged items and blocking the intrusion of light by forming an overlapping part by overlapping parts of the top flap to close the top surface. However, when the flaps of the top lid are stacked together, the height of the package differs between the base side where the flaps are folded and the center side where the flaps are stacked, which causes the top surface of the box to not be flat, resulting in a problem where the box is tilted when the same boxes are stacked on top of each other. For example, Patent Document 1 discloses a technique in which a cut is provided on at least one of the overlapping surfaces of the overlapping portion, extending from the liner on this overlapping surface side to the center, but there is room for improvement. Summary of the Invention [Problem to be solved by the invention]

[0003] An object of the present invention is to prevent packaging bodies having overlapping portions, in which parts of flaps of upper lids overlap, from tilting when stacked. [Means for solving the problem]

[0004] In order to solve the above-mentioned problems, the present invention provides a package including four side plates forming a rectangular cylinder, a lower lid that closes a bottom surface of the cylinder, and an upper lid that closes a top surface of the cylinder, The four side plates include a pair of first side plates opposed to each other and a pair of second side plates opposed to each other at a position intersecting the pair of first side plates, The lower cover is A pair of lower outer flaps extending along lower outer lines on the bottom side edges of the pair of first side panels; A pair of lower inner flaps are provided on the bottom side of the pair of second side panels via a lower inner line, The upper cover is A pair of upper outer flaps extending along upper outer lines on the end edges of the top surfaces of the pair of first side panels; A pair of upper inner flaps are provided on the top surface side of the pair of second side panels via an upper inner line, The pair of lower outer flaps have a size such that they can be folded along the lower outer lines to butt against each other and close the bottom surface, The pair of upper outer flaps are each large enough to be folded along the upper outer line to overlap with a portion of the top surface and close the top surface, The distance between the lower outer ruled line and the upper outer ruled line is longer than the distance between the lower inner ruled line and the upper inner ruled line. Ku, the lower outer crease is disposed at a level different from the lower inner crease by a dimension based on a difference in height from the bottom surface between the overlapping portion of the pair of upper outer flaps and the upper outer crease, The distance between the lower outer crease and the lower inner crease is set to be equal to or greater than the thickness increased by overlapping the pair of upper outer flaps. It is characterized by: Effect of the Invention

[0005] According to the present invention, in a package having an overlapping portion in which a portion of a flap of an upper cover overlaps, the packages can be prevented from tilting when stacked. [Brief description of the drawings]

[0006] [Figure 1] 1 is a diagram illustrating the appearance of a package according to an embodiment of the present invention. FIG. [Diagram 2] FIG. 13 is a diagram showing an example of the package with the top lid open. [Diagram 3] FIG. [Figure 4] 4 is a schematic diagram illustrating the function of the packaging body. FIG. [Diagram 5] 11A and 11B are diagrams illustrating an embodiment in which the packaging bodies are stacked. [Figure 6] FIG. 2 is a diagram for explaining details of an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In each of the drawings for explaining the embodiment of the present invention, components such as members and components having the same function or shape are denoted by the same reference numerals as far as they can be distinguished, and the description thereof will be omitted after the first description.

[0008] Fig. 1 is a diagram for explaining the appearance of a package according to one embodiment of the present invention, where (A) is a perspective view seen from above, (B) is a front view, and (C) is a left side view. Fig. 1 shows an example of a state before the top lid is folded and secured with adhesive tape. Fig. 2 is a diagram showing an example of the package with the top lid opened. Fig. 3 is a development view of the package.

[0009] The packaging body 1 is configured to have at least four side plates 10 that form a rectangular cylinder (body), a lower lid 20 that closes the bottom surface of the cylinder, and an upper lid 30 that closes the top surface of the cylinder. The side plate 10 has a pair of first side plates 11, 12 facing each other, and a pair of second side plates 13, 14 facing each other at a position where the pair of first side plates 11, 12 intersect.

[0010] The lower cover 20 has a pair of lower outer flaps 21, 22 extending from the bottom edge of the first side panels 11, 12 via a lower outer line a1, and a pair of lower inner flaps 23, 24 extending from the bottom edge of the second side panels 13, 14 via a lower inner line a2. The top cover 30 has a pair of upper outer flaps 31, 32 extending from the top edge of the first side panels 11, 12 via an upper outer line b1, and a pair of upper inner flaps 33, 34 extending from the top edge of the second side panels 13, 14 via an upper inner line b2.

[0011] The packaging body 1 is formed as follows. The lower inner flaps 23, 24 are folded along the lower inner line a2 and positioned inside (toward the packaged item) more than the lower outer flaps 21, 22. The lower outer flaps 21, 22 are each folded at a lower outer line a1 so as to have a size that allows them to butt against each other and close the bottom surface.

[0012] The upper inner flaps 33, 34 are folded along the upper inner line b2 and positioned inside the upper outer flaps 31, 32. The upper outer flaps 31, 32 are each folded at an upper outer line b1 so as to overlap with each other over a portion of the top surface to close the top surface.

[0013] The upper outer flaps 31, 32 are not butted together at the center, but are slightly longer than necessary to butt together at the center, and are formed so that the tips of the upper outer flaps 31, 32 overlap slightly at the center (so that they overlap at a part of the top surface). Also, the overlapping area does not equal the entire area of ​​the top surface. Hereinafter, the overlapping portion of the upper outer flaps 31, 32 will be referred to as the "overlap portion" as appropriate. In order to provide an overlapping portion, as shown in Figure 3, the length of the outer flaps (the length in the direction perpendicular to the lower outer line a1 or the upper outer line b1) is formed so that the length L2 of the upper outer flaps 31, 32 is longer than the length L1 of the lower outer flaps 21, 22.

[0014] Next, the arrangement of the ruled lines will be described. As shown in Figs. 2 and 3, the package 1 has a distance D between the lower outer line a1 and the lower inner line a2, and between the upper outer line b1 and the upper inner line b2. Therefore, as shown in FIG. 3, the distance (length L3) between the lower outer ruled line a1 and the upper outer ruled line b1 is longer than the distance (length L4) between the lower inner ruled line a2 and the upper inner ruled line b2.

[0015] It is preferable that the lower outer ruled line a1 is positioned at a predetermined distance D closer to the bottom than the lower inner ruled line a2, and that the lower outer ruled line a1 and the lower inner ruled line a2 are positioned at different levels. The upper outer ruled line b1 is preferably positioned at a predetermined distance D closer to the top surface than the upper inner ruled line b2, and the upper outer ruled line b1 and the upper inner ruled line b2 are preferably positioned at different levels.

[0016] Here, the specified distance D is defined as "a dimension based on the difference in height from the bottom surface between the overlapping portion of the upper outer flaps 31, 32 and the upper outer line b1 (the original point at which the upper outer flaps 31, 32 are folded)."

[0017] The predetermined distance D may be, for example, the same as the "thickness caused (increased) by overlapping the upper outer flaps 31, 32" or "a value larger than the aforementioned thickness." The "thickness resulting from overlapping the upper outer flaps 31, 32" may be, for example, the increased thickness of the overlapping portions of the upper outer flaps 31, 32 compared to when the upper outer flaps 31, 32 are butted together (such as the thickness of the upper outer flaps 31, 32).

[0018] The upper limit of the "value larger than the aforementioned thickness" may be determined based on the difference in height from the top surface between the overlapping portion and the folding origin of the upper outer flaps 31 and 32, the material of the package 1, and the like. The "value larger than the aforementioned thickness" may be, for example, 1.5 to 2 times the aforementioned thickness. This is to take into consideration the case where, for example, if only the upper outer flaps 31 and 32 are overlapped, the "above-mentioned thickness" is sufficient, but if the tips of the upper outer flaps 31 and 32 are folded or otherwise processed, the "above-mentioned thickness" is not sufficient and the package 1 may tilt when stacked. For this reason, it is desirable to take into consideration the fact that the upper flap may tend to float due to the repulsion (force trying to open) of the upper flap, which may occur when the strength of the cardboard used as the material of the package 1 is high. It is also desirable to take into consideration that if the thickness exceeds twice the aforementioned thickness, there may be a decrease in strength, a harmful effect caused by light entering due to an increase in the gap, and an intrusion of unwanted objects such as garbage due to an increase in the gap.

[0019] Next, the operation of the packaging body 1 of one embodiment will be described. FIG. 4 is a schematic diagram illustrating the function of the packaging body of one embodiment. In Fig. 4, the left side shows an example of the state before the packages 1 are stacked, and the right side shows an example of the state after the packages 1 are stacked. The dashed line X1 indicates the position of the lower outer ruled line a1 on the bottom surface, and the dashed line X2 indicates the position of the upper outer ruled line b1 on the top surface. Note that Fig. 4 shows an example of the state in which the packages 1 are closed with adhesive tape 41, but the adhesive tape 41 is omitted in the drawing.

[0020] As shown in Fig. 4, the bottom surface of the package 1 is different from the top surface in that the lower outer flaps 21, 22 are butted together, and no overlapping portions are formed between the flaps, but the lower outer lines a1 and the lower inner lines a2 from which the lower outer flaps 21, 22 and the lower inner flaps 23, 24 are folded are provided with a step. By providing a step-like space on the bottom surface side in this manner, when the packages 1 are stacked, if a force is applied from below due to the thickness of the overlapping portion of the top cover 30 of the lower package 1 to the bottom surface of the upper package 1, the lower outer flaps 21, 22 of the upper package 1 can move upward from the lower outer lines a1 by a gap of distance D. As a result, the lower outer flaps 21, 22 have a tapered shape with a higher center, which can absorb the thickness generated in the center of the lower package 1, and can prevent the packages 1 from tilting even when stacked.

[0021] Furthermore, on the top surface of the packaging body 1, the upper outer flaps 31, 32 have a thickness T at the overlapping portion due to a repulsive force when there is no packaging body 1 stacked on top, but when the packaging body 1 is stacked, they are able to move downward from the upper outer boundary line b1 by a gap of distance D. In this way, the thickness of the upper outer flaps 31, 32 at the central portion is reduced. However, depending on the cardboard liner, the thickness may be large, making it difficult for the upper outer flaps 31, 32 to become completely flat as shown by the dashed line X2. For this reason, it is preferable that the package 1 combines the upper outer flaps 31, 32 with the lower outer flaps 21, 22, and that the thickness of the central portion of the upper outer flaps 31, 32 is absorbed by the tapered shape of the lower outer flaps 21, 33, which are higher in the central portion.

[0022] <Example> Fig. 5 is a diagram for explaining an embodiment in which the packages 1 are stacked up, and Fig. 6 is a diagram for explaining the details of the embodiment. As shown in Fig. 5(A), three packages 1 were stacked and the heights h1 and h2 were measured. As a comparative example, a package was used that had an overlapping portion similar to that of package 1, but had no step between the lower outer ruled line a1 and the lower inner ruled line a2, and between the upper outer ruled line b1 and the upper inner ruled line b2. The measurement results are shown in Fig. 5(B). The unit of values ​​is millimeters (mm). The difference between the heights h1 and h2 was 1 mm for the packaging body 1 of the embodiment and 7 mm for the packaging body of the comparative example.

[0023] Fig. 6 is a photograph of an example of an actual package, where (A) shows the package 1 of the embodiment and (B) shows a package of a comparative example. In Fig. 6, the left side of (A) is an enlarged view of the area enclosed in a square on the right side, and (B) shows the area corresponding to the left side of (A). In the packaging body 1 of the embodiment, the gap C1 between the upper and lower ridges of the packaging body 1 is smaller than in the comparative example. This reduces the wobbling of the packaging body 1 and reduces tilting when stacked. In the comparative example, the gap C2 between the top and bottom ridges of the package is larger than the gap C1, which causes the package to wobble and tilt when stacked.

[0024] 5 and 6, in the comparative example, the height of the package differs between the base of the flap and the central part where the flap tips are folded over, and the top surface of the package does not become flat, so that the same packages tilt when stacked. On the other hand, in the package 1 of one embodiment, the thickness of the folded part of the central part of the top surface can be accommodated in the central part of the bottom surface, so that the packages 1 can be prevented from tilting when stacked.

[0025] <Modification> In the above-described embodiment, an example was described in which the same distance D is provided between the lower outer line a1 and the lower inner line a2, and between the upper outer line b1 and the upper inner line b2. However, the packaging body 1 may be configured to provide different differences between the lower outer line a1 and the lower inner line a2, and between the upper outer line b1 and the upper inner line b2.

[0026] In the above embodiment, the lower outer line a1 and the lower inner line a2 of the lower cover 20 are staggered, and the upper outer line b1 and the upper inner line b2 of the upper cover 30 are staggered. However, either the line of the lower cover 20 or the line of the upper cover 30 may be staggered. Depending on various conditions such as the material of the cardboard forming the package 1 and the weight of the packaged items, it is expected that staggering the lines of the lower cover 20 or the upper cover 30 will prevent the package 1 from tilting when stacked. For example, if the packaged items are heavy and would deform the cardboard liner, it is possible that the package will be less likely to tilt.

[0027] Furthermore, it is advisable to provide the package 1 with marks to distinguish between the top and bottom (top lid 30 and bottom lid 20). This is because, unlike the method of overlapping the entire length of the flaps of the cardboard top cover, the amount of overlap of the upper outer flaps 31, 32 is small and there is no significant difference in length between the lower outer flaps 21, 22 and the upper outer flaps 31, 32 (the difference between lengths L1 and L2 shown in Figure 3), making it difficult to distinguish between the top and bottom of the package 1. By making it easier to distinguish between the top and bottom of the packaging body 1, operations such as closing the bottom lid 20 of the packaging body 1 before the top lid 30 can be performed efficiently. It is preferable that the mark for distinguishing the top from the bottom is provided, for example, on one or more of the lower outer flaps 21, 22 or the upper outer flaps 31, 32. As an example, if a mark is provided on one or both of the upper outer flaps 31, 32 by printing or the like, it becomes easy to check the top lid 30 side when handling the package 1.

[0028] As described above, even if the packaging body 1 of one embodiment has an overlapping portion, the packaging bodies 1 can be prevented from tilting when stacked.

[0029] Furthermore, the packaging body 1 of one embodiment has an overlapping portion, which makes it possible to protect the packaged item, for example, by preventing scratches and light from being blocked. For example, when the height of the packaged item is almost the same as the inner dimensions of the package, when cutting the adhesive tape that secures the top lid with a cutter or the like during opening, the packaged item can be opened without being damaged. Also, when light enters through the butt joint of the top lid and the packaged item deteriorates or changes over time due to exposure to light, the overlapping portion can prevent the light from entering. In addition, by providing the overlapping portion, for example, it becomes unnecessary to use a protective member such as a protective sheet to protect the packaged item, and it becomes possible to reduce the number of parts required for packaging.

[0030] Furthermore, as a means for protecting the packaged object without using separate parts, a method is known in which, instead of butting flaps on the top surface of the package together at the center of the box, the length of the flaps is set to the length from the folding end to the folding end of the opposing flap, and the entire length of the flaps is overlapped to prevent a gap from occurring at the butt joint. In contrast, in the package 1 of one embodiment, the length of the top flap is made slightly longer than the length required to butt together at the center of the box, so that the tips of the flaps overlap, thereby using less cardboard area than the method of overlapping the entire length of the flaps, making it possible to conserve resources.

[0031] The invention made by the inventor has been specifically described above based on an embodiment, but it goes without saying that the present invention is not limited to the above embodiment and can be modified in various ways without departing from the gist of the invention. [Explanation of symbols]

[0032] 1 package 10 Side Panel 11, 12 First side panel 13, 14 Second side panel 20 Lower lid 21, 22 Lower outer flap 23, 24 Lower inner flap 30 Top lid 31, 32 Upper outer flap 33, 34 Upper inner flap a1 bottom outer border a2 lower inner border b1 top outer border b2 upper inner border [Prior art documents] [Patent documents]

[0033] [Patent Document 1] Japanese Patent Publication No. 01-240440

Claims

1. A package including four side panels forming a rectangular cylinder, a lower lid that closes a bottom surface of the cylinder, and an upper lid that closes a top surface of the cylinder, The four side plates include a pair of first side plates opposed to each other and a pair of second side plates opposed to each other at a position intersecting the pair of first side plates, The lower cover is A pair of lower outer flaps extending along lower outer lines on the bottom side edges of the pair of first side panels; A pair of lower inner flaps are provided on the bottom side of the pair of second side panels via a lower inner line, The upper cover is A pair of upper outer flaps extending along upper outer lines on the end edges of the top surfaces of the pair of first side panels; A pair of upper inner flaps are provided on the top surface side of the pair of second side panels via an upper inner line, The pair of lower outer flaps have a size such that they can be folded along the lower outer lines to butt against each other and close the bottom surface, The pair of upper outer flaps are each large enough to be folded along the upper outer line to overlap with a portion of the top surface and close the top surface, A distance between the lower outer ruled line and the upper outer ruled line is longer than a distance between the lower inner ruled line and the upper inner ruled line; the lower outer crease is disposed at a level different from the lower inner crease by a dimension based on a difference in height from the bottom surface between the overlapping portion of the pair of upper outer flaps and the upper outer crease, A package characterized in that the distance between the lower outer line and the lower inner line is the same as or greater than the thickness increased by overlapping the pair of upper outer flaps.

2. the upper outer crease is disposed at a level different from the upper inner crease by a dimension based on a difference in height from the bottom surface between the overlapping portion of the pair of upper outer flaps and the upper outer crease, 2. The packaging body according to claim 1, wherein the distance between the upper outer line and the upper inner line is equal to or greater than the thickness increased by overlapping the pair of upper outer flaps.

3. 3. The package according to claim 1, wherein the value greater than the thickness is 1.5 to 2 times the thickness.

4. the lower outer ruled line is disposed closer to the bottom surface than the lower inner ruled line; The package according to claim 1 , wherein the upper outer line is disposed closer to the top surface than the upper inner line.

5. 5. The package according to claim 1, further comprising a mark for distinguishing between the lower cover and the upper cover.

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