Packaging box

Abstract

To provide a packaging box which achieves both lightweightness and aesthetic appearance and which maintains both the lightweightness and strength.SOLUTION: A packaging box 11 comprises: a bottom wall portion 12 alternatively selected from a triangle, a rectangle, a pentagon, and a polygon having more vertices; a first side wall portion 13 erected from one side of the bottom wall portion; a plurality of second side wall portions 14 erected from other sides of the bottom wall portion; a top surface portion 11a formed by an upper end portion 13a of the first side wall portion and upper end portions 14a of the second side wall portions; an outer lid portion 15 further extending from the upper end portion of the first side wall portion and being capable of closing the top surface portion; inner lid portions 16 further extending from the upper end portions of any of the plurality of second side wall portions; and an insertion piece 17 further extending from the outer lid portion and inserted in a gap between the second side wall portions and the inner lid portions. The packaging box is further treated with lightweight processing means A.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a packaging box that is both lightweight and aesthetically pleasing, and that is also lightweight while maintaining its strength. [Background technology]

[0002] A recent trend in environmental considerations is the global movement away from plastic. This trend is also clear in the packaging box industry, where the shift to packaging boxes made from paper and cardboard sheet materials is notable even in the commodity industry, where plastic packaging containers were the mainstream. However, simply moving away from plastic to pulp materials such as paper and cardboard does not necessarily mean that environmental consideration is sufficient, and further improvements are required.

[0003] In view of this, a packaging box is known in which slits or holes are provided in a portion of each wall constituting the packaging box to reduce its weight. For example, Patent Document 1 discloses a vehicle seat comprising a rectangular bottom wall portion, front and rear end walls and left and right side walls erected around the bottom wall portion, each of the front and rear end walls comprising outer end walls connected to the bottom wall portion via front and rear end edges of the bottom wall portion, and inner end walls connected to the outer end wall portion and folded back from an upper edge of the outer end wall portion toward the inside in the front-rear direction, each of the left and right side walls comprising outer wall portions connected to the bottom wall portion via the left and right end edges of the bottom wall portion, and inner end walls connected to the outer wall portion and folded back from an upper edge of the outer wall portion toward the inside in the left-right direction. A tray-type packaging box is disclosed that has a turned-up inner wall portion, and front and rear insertion pieces that are connected to both the front and rear sides of the outer wall portion and are folded at the front and rear edges of the outer wall portion and inserted between the outer end wall portion and the inner end wall portion, wherein the outer wall portion has a lower half that is connected to the bottom wall portion via the left and right edges and extends over the entire area in the front-to-rear direction, and an upper half that, at the outer end portion, is separated upward from the lower half portion by a long hole extending in the front-to-rear direction and extends over the entire area in the front-to-rear direction (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2023-069453 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned Patent Document 1, the objective is to achieve both grippability and aesthetic appeal. However, in achieving both grippability and aesthetic appeal, if slits or holes are formed indiscriminately to reduce weight, the slits or holes may become exposed, which may result in a decrease in aesthetic appeal. In other words, it is expected and required that the packaging box that stores products have a sufficient aesthetic appeal in consideration of the products to be stored therein; however, if weight-saving measures are applied to the packaging box indiscriminately, the weight-saving measures will become exposed, and there is a risk that the aesthetic appeal expected and required of the packaging box will be lost. In addition, when it comes to weight reduction, excessive weight reduction may also impair the strength of the packaging box. Therefore, there is still room for improvement in terms of achieving both aesthetic appeal and weight reduction, and weight reduction while maintaining strength of the packaging box.

[0006] The present invention was invented in consideration of the above problems, and one of its objectives is to achieve both aesthetic appeal and weight reduction in a packaging box. In addition to the above objective, other objectives of the present invention include providing effects derived from the configurations shown in the "Mode for Carrying Out the Invention" below, which cannot be obtained by the conventional technology. [Means for solving the problem]

[0007] The packaging box of the present invention comprises a bottom wall portion selected from a triangle, a rectangle, or a polygon having pentagons or more sides, a first side wall portion erected from one side of the bottom wall portion, a plurality of second side wall portions erected from each of the other sides of the bottom wall portion, a top surface portion formed from the upper end of the first side wall portion and the upper end of the second side wall portion, an outer lid portion extending further from the upper end of the first side wall portion and capable of closing the top surface portion, an inner lid portion extending further from the upper end of any second side wall portion of the plurality of second side wall portions, and an insert piece extending further from the outer lid portion and inserted between the second side wall portion and the inner lid portion, and is further characterized in that it is subjected to a lightweight processing means.

[0008] In the packaging box of the present invention, the lightweight processing means is composed of one or more holes having a desired shape.

[0009] In the packaging box of the present invention, the shape of the hole is a heart shape, a spade shape, a clover shape, a diamond shape, a circle, a polygon, a streamlined shape, any other geometric shape, or a combination thereof.

[0010] In the packaging box of the present invention, the lightweight processing means is formed of one or more notches having a desired shape.

[0011] In the packaging box of the present invention, the shape of the cutout is preferably a heart shape, a spade shape, a clover shape, a diamond shape, a circle shape, a polygon shape, a streamlined shape, any other geometric shape, or a combination thereof.

[0012] In the packaging box of the present invention, the lightweight processing means is a chamfering process having a desired shape.

[0013] The packaging box of the present invention is also characterized in that the lightweight processing means is applied to the insert piece and / or the inner lid portion.

[0014] In the packaging box of the present invention, the lightweight processing means is arranged so as not to be exposed to the outside when the packaging box is in a closed state. Effect of the Invention

[0015] The effects of the packaging box of the present invention make it possible to achieve both weight reduction and aesthetic appeal, and also to achieve both weight reduction and maintenance of strength. [Brief description of the drawings]

[0016] [Figure 1] 1 is a schematic perspective view of a packaging box according to a first embodiment of the present invention. FIG. [Diagram 2] 2 is a schematic perspective view showing an intermediate stage in which an insertion piece of the packaging box of FIG. 1 is being inserted between a second side wall portion and an inner lid portion. FIG. [Diagram 3] 2 is a schematic perspective view showing a state in which the insertion piece of the packaging box in FIG. 1 is inserted between the second side wall portion and the inner lid portion, and the top portion of the packaging box is closed by the outer lid portion. FIG. [Figure 4] 2 is a schematic perspective view of the packaging box of FIG. 1 in which a lightweight processing means A is applied to a portion of the packaging box that is not exposed to the outside when the packaging box is in a closed state. FIG. [Diagram 5] FIG. 11 is a schematic perspective view of a packaging box according to a second embodiment of the present invention. [Figure 6] FIG. 11 is a schematic perspective view of a packaging box according to a third embodiment of the present invention. [Figure 7] FIG. 11 is a schematic perspective view of a packaging box according to a fourth embodiment of the present invention. [Figure 8] FIG. 13 is a schematic perspective view of a packaging box according to a fifth embodiment of the present invention. [Figure 9] FIG. 13 is a schematic perspective view of a packaging box according to a sixth embodiment of the present invention. [Figure 10] FIG. 13 is a schematic perspective view of a packaging box according to a seventh embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Each embodiment of the present invention will be described in detail with reference to the drawings. 1 to 3 show a first embodiment of the present invention. A packaging box 11 of the present invention in the first embodiment is a three-dimensional packaging material assembled from flat sheet members. (Hereinafter, the state in which the top surface portion formed by the upper end portion of the side wall of the packaging box is closed with an outer lid portion will be referred to as the "closed state of the packaging box.")

[0018] As shown in Figure 1, the packaging box 11 of this embodiment is composed of a bottom wall portion 12, a first side wall portion 13 erected from one side of the bottom wall portion 12, a plurality of second side wall portions 14 erected from each other side of the bottom wall portion 12, a top surface portion 11a formed from the upper end portion of the first side wall portion 13 and the upper end portion of the second side wall portion 14, an outer lid portion 15 extending further from the upper end portion 13a of the first side wall portion 13, an inner lid portion 16 extending further from the upper end portion 14a of any second side wall portion of the plurality of second side wall portions 14, an insertion piece 17 extending further from the outer lid portion 15, and a lightweight processing means A.

[0019] As shown in Fig. 1, the bottom wall 12 is the bottom of the packaging box 11 of the present invention, and the first side wall 13 and the second side wall 14 are erected from each side of the bottom wall 12. The bottom wall 12 is shown as a simple flat plate in the figure, but is not limited to such a simple flat plate shape, and may have any mechanism, structure, or shape that can enable the packaging box to be assembled and folded. In addition, the bottom wall 12 is shown as a rectangle in the figure, but is of course not limited to this shape, and may be a triangle, other quadrangle, or a polygon with pentagons or more.

[0020] As shown in FIG. 1, the first side wall portion 13 stands from one side of the bottom wall portion 12, and the outer lid portion 15 is provided on an upper end portion 13a thereof.

[0021] 1, the second side wall 14 stands from each of the other sides of the bottom wall 12, and the inner lid 16 is provided at its upper end 14a. The second side wall 14 on which the inner lid 16 is provided may be one or any two or more of the plurality of second side walls 14. In this embodiment, the inner lid 16 is formed at the upper end 14a of the two second side walls 14 facing each other with the bottom wall 12 in between.

[0022] The top surface portion 11a is formed from the upper ends of the first side wall portion 13 and the second side wall portion 14 which are erected from each side of the bottom wall portion 12, and is the portion which serves as an opening for inserting and removing items into the packaging box, and is the portion which is closed by the outer lid portion 15.

[0023] As shown in FIG. 1, the outer lid portion 15 extends further from the upper end portion 13a of the first side wall portion 13, and is capable of closing the top surface portion 11a, as shown in FIG. 3.

[0024] The inner lid portion 16 is provided by further extending from the upper end portion 14a of the second side wall portion 14. Of course, the inner lid portion 16 may be provided on one or any two or more of the plurality of second side wall portions 14, and in this embodiment, as shown in Fig. 1, the inner lid portion 16 is formed on the upper end portions 14a of the two second side wall portions 14 facing each other with the bottom wall portion 12 interposed therebetween.

[0025] The insertion piece 17 extends further from the outer lid portion 15 and can be inserted between the second side wall portion 14 and the inner lid portion 16 as shown in FIG.

[0026] 1, the weight reducing means A is applied to the insert piece 17 and the inner lid portion 16, and in this embodiment, a heart-shaped hole 21 is formed in the insert piece 17 and the inner lid portion 16. The hole 21 as the weight reducing means A can be formed, for example, by press cutting. In this embodiment, the weight reducing means A is applied to the insert piece 17 and the inner lid portion 16, but the method is not limited to this, and the weight reducing means A may be applied to either the insert piece 17 or the inner lid portion 16, or to a portion that is not exposed to the outside when the packaging box 11 is closed.

[0027] The areas to which the lightweight processing means A is applied will be described in more detail. In general, in the case of a packaging box assembled by folding a sheet member, when the packaging box is closed, the joining pieces joining the bottom wall and the side wall and the joining pieces joining the side walls are often exposed on the inside of the packaging box. For such areas that are not exposed to the outside when the packaging box is closed, the lightweight processing means A can be applied to any area, for example, as shown in Fig. 4. In addition, since the vertical strength of the packaging box is maintained by the vertical edges formed by the two adjacent side walls, the lightweight processing means A can be freely applied to each part that is not exposed to the outside, as long as the basic function of each part that is not exposed to the outside is not impaired.

[0028] As shown in Fig. 2, the packaging box 11 is configured such that the top surface portion 11a of the packaging box 11 can be closed by the outer lid portion 15 as shown in Fig. 3 by inserting the insertion piece 17 between the second side wall portion 14 and the inner lid portion 16. When the top surface portion 11a of the packaging box 11 is in a closed state, the outside of the bottom wall portion 12, the outside of the first side wall portion 13 and the second side wall portion 14, and the outside of the outer lid portion 15 are exposed. Therefore, in this embodiment, the insertion piece 17 and the inner lid portion 16, which are not exposed to the outside when the packaging box 11 is in a closed state, are subjected to the weight reduction processing means A.

[0029] Therefore, in this embodiment, when the packaging box 11 is in a closed state, the lightweight processing means A is not exposed and the aesthetic appeal is not impaired, and the desired and required aesthetic appeal of the packaging box 11 can be maintained without any problems while realizing the weight reduction of the packaging box 11. Furthermore, as a further effect of the application of this embodiment, although at first glance it appears to be an ordinary packaging box, when the packaging box is opened to check the contents thereof, the shape of the hole 21 can be changed to match the item containing the lightweight processing means A, so that the lightweight processing means A comes into view, thereby creating a special presentation and an emotional experience, and also providing good presentation properties.

[0030] In this way, the packaging box of the present invention can simultaneously achieve both weight reduction and aesthetic appeal, and weight reduction and maintenance of strength.

[0031] Other shapes of the holes 21 are shown as examples in FIG. 5 to FIG. That is, Fig. 5 shows a second embodiment in which the shape of the hole 21 is a rectangle. Fig. 6 shows a third embodiment in which the shape of the hole 21 is a triangle. Fig. 7 shows a fourth embodiment in which the shape of the hole 21 is a diamond. Fig. 8 shows a fifth embodiment in which the shape of the hole 21 is a circle.

[0032] In this way, by appropriately changing the shape of the holes 21 depending on the industry in which the packaging box 11 is applied and the type and image of the items to be stored in the packaging box 11, it is possible not only to reduce the weight of the packaging box, but also to provide an extremely good presentation, such as a special emotional experience, when the packaging box is opened.

[0033] Next, an embodiment in which the weight-weighting means B is applied will be described with reference to Figs. Fig. 9 shows the sixth embodiment, and Fig. 10 shows the seventh embodiment. The packaging box 31 in the sixth embodiment and the packaging box 41 in the seventh embodiment are each composed of a rectangular bottom wall, a first side wall erected from one side of the bottom wall, a plurality of second side walls erected from the other sides of the bottom wall, a top surface portion formed from the upper end of the first side wall and the upper end of the second side wall, an outer lid portion further extending from the upper end of the first side wall, an inner lid portion further extending from the upper end of any second side wall of the plurality of second side walls, an insert piece further extending from the outer lid, and a weight processing means B.

[0034] In addition, among the above-mentioned configuration, the components other than the weight-processing means B are the same as those in the first embodiment described above, so the description thereof will be omitted. 9 and 10, the weight reduction means B realizes weight reduction by providing a cutout 51 of any shape at the portion to which the weight reduction means B is applied. Of course, it goes without saying that by appropriately changing the shape of the cutout 51, it is possible to achieve a good presentation when the packaging box is opened, as in the first to fifth embodiments described above. Furthermore, in the seventh embodiment, as shown in Fig. 10, a chamfering process 61 can be performed together with the cutout 51. Of course, the present invention is not limited to this embodiment, and only one of the cutout 51 and the chamfering process 61 may be performed.

[0035] As described above, the packaging box of the present invention has been described using various embodiments. However, the shapes and structures shown in the embodiments are merely examples and are not intended to be limiting. For example, the bottom wall is not limited to a rectangular shape, but may be a triangle, other quadrangle, or polygon having pentagons or more. Regarding the lightweight processing means A and B, the lightweight processing means A and B may be applied to any part that is not exposed to the outside when the packaging box is closed. The holes in the lightweight processing means A and the cutouts and chamfering in the lightweight processing means B may be formed by press cutting, for example, but are not limited to this, and may be formed using any known technology depending on the thickness and raw material of the sheet material of the packaging box and the difficulty of processing.

[0036] Since the packaging box of the present invention is configured as described above, it can provide the following actions and effects. (1) The weight of the packaging box can be reduced by applying lightweight processing to any part of the box. (2) Since the lightweight processing means is applied to the portions of the packaging box that are not exposed when the packaging box is closed, such as the inner folded portion, the aesthetic appeal of the packaging box can be maintained sufficiently without being impaired. (3) The portions of the packaging box that are not exposed when the packaging box is closed, such as the inner folded portion of the packaging box, which are subjected to the lightweight processing means, do not affect the strength of the vertical edges formed by the two adjacent side walls, which maintain the vertical strength of the packaging box. Therefore, even if the lightweight processing means is applied, the strength of the packaging box is not impaired and sufficient strength can be maintained. [Explanation of symbols]

[0037] 11 Packaging box 11a Top surface 12 Bottom wall 13 First side wall part 13a Upper end 14 Second side wall part 14a Upper end 15 Outer lid part 16 Inner lid 17 Insert 21 holes 31 Packaging box 41 Packaging box 51 Cutout 61 Chamfering A. Lightweight processing method B. Lightweight processing method

Claims

1. A bottom wall portion having a shape selected from a triangle, a rectangle, or a polygon having pentagons or more; a first side wall portion extending from one side of the bottom wall portion; A plurality of second side wall portions extending from other sides of the bottom wall portion; a top surface portion formed by an upper end portion of the first side wall portion and an upper end portion of the second side wall portion; An outer lid portion that is further extended from an upper end portion of the first side wall portion and is capable of closing the top surface portion; An inner lid portion further extending from an upper end portion of any one of the second side wall portions of the plurality of second side wall portions; An insert piece that extends from the outer lid portion and is inserted between the second side wall portion and the inner lid portion; A packaging box consisting of: The packaging box is further characterized in that it is subjected to a lightweight processing means.

2. 2. The packaging box of claim 1, wherein the lightweight processing means comprises one or more holes of a desired shape.

3. 4. The packaging box according to claim 3, wherein the shape of the hole is a heart shape, a spade shape, a clover shape, a diamond shape, a circle shape, a polygon shape, a streamline shape, any other geometric shape, or a combination thereof.

4. 2. The packaging box according to claim 1, wherein the lightweight processing means comprises one or more cutouts having a desired shape.

5. 5. The packaging box according to claim 4, wherein the shape of the cutout is a heart shape, a spade shape, a clover shape, a diamond shape, a circle shape, a polygon shape, a streamlined shape, any other geometric shape, or a combination thereof.

6. 2. The packaging box according to claim 1, wherein the lightweight processing means is a chamfering process having a desired shape.

7. 7. The packaging box according to claim 1, wherein the lightweight processing means is applied to the insert piece and / or the inner lid portion.

8. 8. The packaging box according to claim 7, wherein the lightweight processing means is not exposed to the outside when the packaging box is in a closed state.

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