JP2020164183A - box - Google Patents

Abstract

To achieve a box that is assembled from one sheet, which enables even contents such as fine powder and liquid substances to be fully put therein.SOLUTION: Folded-out parts 9, which are double-folded outward into a triangle shape and then folded out into outer surface sides of second side wall parts 6, are provided between first side wall parts 4 and the second side wall parts 6 adjacent to each other provided at four sides of a bottom part 2. A first folded-back piece 11 is provided at an outer edge of the first side wall part 4. At both ends of the first folded-back piece 11 are provided pressing pieces 13 that are folded back toward the outer surface of the second side wall part 6 and folded back on the folded-out parts 9 folded out to the outer surface side of the second side wall part 6. Second folded-back pieces 15 are provided at outer edges of the second side wall parts 6 through seventh folded lines 14. The folded-out parts 9 folded out on the outer surface side of the second side wall parts 6 and folded-back pieces 17 folded back on insides of the folded-out parts 9 and of the pressing pieces 13 from below the pressing pieces 13 folded on the folded-out parts 9 are provided at outer edges of the second folded-back pieces 15.SELECTED DRAWING: Figure 4

Description

The present invention relates to a box assembled from a single sheet, particularly suitable for storing powders and liquids.

As a box assembled from a single sheet, as shown in FIG. 5, side walls 31, 31, 32, and 32 are connected to the four sides of the quadrilateral bottom wall 30 of the box body, respectively, and the adjacent side walls 31, A connecting piece 33 that straddles the side sides of the 32 and is folded in half outward is continuously provided, and the upper edge of each side wall 31, 31, 32, 32 of the box body and the upper edge of the outer piece 33 of the connecting piece 33 are connected. The folded pieces 34 and 35 that are folded outward are connected to each other, and the folded pieces 36 of the outer piece are connected to both ends of the folded piece 34 of the pair of facing side walls, and the folded pieces of the other pair of facing side walls are connected. A folding piece 37 to be folded between the connecting piece and the side wall is continuously provided at the tip of the 35, and the folding piece 37 is folded between the folded piece 36 and the connecting piece 33 and the side wall 32. A corrugated cardboard box is known in which a handle portion is formed on a pair of upper side walls facing each other (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 10-273131

According to the corrugated cardboard box described in Patent Document 1, the connecting pieces 33, 33 that straddle between the side sides of the adjacent side walls and are folded in half outward have corners on the opening end side of the corrugated cardboard box. It is cut in the vertical direction. Therefore, in the corrugated cardboard box, a gap is formed in the cut portion 38 of the connecting pieces 33 and 33 on the side wall.
As a result, when the content is a fine powder, when the powder is fully contained in the box, the powder passes between the connecting pieces 33 and 33 to be folded in half and is generated in the cut portion 38 of the connecting pieces 33 and 33. In the case of liquid material, it leaks from the gap of the cut portion 38 of the connecting pieces 33 and 33, and the leaked liquid material permeates into the cardboard from the end face of the cut portion to increase the box strength. It will make it vulnerable. Therefore, if the content is a fine powder or liquid, there is a problem that the box cannot be filled until it is full.

An object of the present invention is to provide a box that can be assembled from a single sheet and that can be filled even if the contents are fine powder or liquid.

In order to achieve the above object, the invention according to claim 1 is a box assembled from a single sheet, which is provided on two opposing sides of a rectangular bottom via a first polygonal line. Between the first side wall portion, the second side wall portion provided on each of the other two opposing sides of the bottom portion via the second folding line, and the adjacent first side wall portion and the second side wall portion. The second side wall is provided and is formed into a square having both side edges connected via a third fold line and a fourth fold line on both side edges, respectively, and folded in half outward to form a triangle. A folding portion that is folded into the outer surface side of the portion, a first folding piece provided on the outer edge of the first side wall portion via a fifth folding line, and both ends of the first folding piece via a sixth folding line. A holding piece that is provided, is bent toward the outer surface side of the second side wall portion, and is folded over the folded portion that is folded into the outer surface side of the second side wall portion, and the second side wall portion. Folded on the folding portion and the holding piece folded on the folding portion, which are provided on the outer end edge via the seventh folding line and are folded on the outer surface side of the second side wall portion. The second folded piece and the folded portion provided on the outer edge of the second folded piece via an eighth folding line and folded toward the outer surface side of the second side wall portion of the folded portion from below. It is characterized by having a folding piece that is folded inward.

According to the first aspect of the present invention, the folding portion to be folded into the outer surface side of the second side wall portion is located between the adjacent first side wall portion and the second side wall portion, and is provided on both side edge edges. It is formed into a square having two side edges connected via a fold line and a fourth fold line, and is folded in half outward to form a triangle, which is folded in half on the outer surface side of the second side wall portion. The position of the end face of the triangular folding portion is the same as the position of the opening end face of the first side wall portion and the second side wall portion, and even if the content is fine powder or liquid, it should be filled up. Can be done.
Further, a holding piece provided on the outer edge of the first side wall portion via the sixth folding line on the first folding piece provided via the fifth folding line is folded into the outer surface side of the second side wall portion. The second folded piece, which is folded over the folded portion and provided on the outer edge of the second side wall portion via the seventh folding line, is folded into the outer surface side of the second side wall portion. The folded piece, which is folded onto the folded portion and the holding piece which is folded over the folded portion and is provided on the second folded piece via the eighth folding line, is the second side wall. Since the folding piece is folded inward of the folding portion from below the folding portion folded to the outer surface side of the portion, the folding piece is sandwiched between the outer surface of the second side wall portion and the folding portion. You can get a robust box.

The invention according to claim 2 is provided at both ends of the first folded piece according to claim 1 via a sixth folding line, and is bent toward the outer surface side of the second side wall portion to form the first folded piece. 2. The holding piece to be folded over the folding portion folded on the outer surface side of the side wall portion is formed to have a length exceeding at least the folding portion on the front side.

According to the second aspect of the present invention, since the holding piece is formed to have a length that exceeds at least the folding portion on the front side, the pressing piece is formed on the outer end edge of the second side wall portion via the seventh folding line. The folding piece provided on the provided second folding piece via the eighth folding line is the folding portion folded on the outer surface side of the second side wall portion and the holding piece folded on the folding portion. It can be folded into the inside of the folding portion and the holding piece from below, and the folding piece is between the outer surface of the second side wall portion and the folding portion and the holding piece folded on the folding portion. It will be pinched, and a more robust box can be obtained.

The invention according to claim 3 is characterized in that, at least one surface of the sheet according to claim 1 or 2 is subjected to liquid resistance processing.

According to the invention of claim 3, since at least one surface of the sheet is liquid-resistant, even if the content is liquid, the content may leak or the box may be broken. There is no risk of becoming vulnerable.

The invention according to claim 4 is characterized in that the sheet according to any one of claims 1 to 3 is made of paper.

According to the invention of claim 4, since the sheet is made of paper, it can be easily disposed of after use and can be reused as a resource.

The invention according to claim 5 is characterized in that the sheet according to any one of claims 1 to 4 is a corrugated cardboard sheet.

According to the invention of claim 5, since the sheet is a corrugated cardboard sheet, a lightweight and robust box can be obtained, and handling and manufacturing are easy.

As described above, according to the box according to the present invention, it is possible to obtain a box that can be filled even if the content is a fine powder or liquid.

It is a perspective view which shows an example of embodiment of the box which concerns on this invention. It is a development view of the box shown in FIG. It is explanatory drawing which shows the process of assembling the box shown in FIG. It is explanatory drawing which shows the process of assembling the box shown in FIG. It is a perspective view which shows the conventional box.

Hereinafter, an example of the form of the box according to the present invention will be described in detail with reference to the drawings.
1 to 4 show an example of an embodiment of the box according to the present invention, FIG. 1 is a perspective view of the box of this example, FIG. 2 is a developed view of the box shown in FIG. 1, and FIG. An explanatory diagram showing a process of assembling the box shown in FIG. 1, and FIG. 4 is an explanatory diagram showing a process of assembling the box shown in FIG.

The box in this example is a box that can be assembled from a single sheet.
The sheet to be used is not particularly limited as long as it is a sheet-like material, but for example, a paper sheet, a plastic sheet, or the like is used. Examples of the paper sheet include a cardboard sheet, a white paperboard sheet, a paper cardboard sheet, and the like, and examples of the plastic sheet include a plastic plate-like sheet and a plastic cardboard sheet.
Further, as the sheet, at least one surface which is the inner surface of the box may be subjected to liquid resistance processing. In the liquid-resistant processing, a liquid-resistant film may be laminated on a paper sheet such as a cardboard sheet, a white paperboard sheet, or a paper cardboard sheet, or a liquid-resistant paint may be coated. The paper layer may contain a liquid resistant agent.
In this example, as a sheet for assembling the box, a paper corrugated cardboard sheet in which one surface, which is the inner surface of the box, is coated with a liquid-resistant paint is used.

As shown in the developed view of FIG. 2, the box 1 of this example formed of such a corrugated cardboard sheet has a first side wall portion via a first folding line 3 on two opposing sides of a rectangular bottom portion 2. 4 is provided, and a second side wall portion 6 is provided on each of the other two opposing sides of the bottom portion 2 via a second folding line 5.

The adjacent first side wall portion 4 and the second side wall portion 6 are connected to both side edge portions via the third folding line 7 and the fourth folding line 8, respectively, and are formed into a square having both side edge portions as two sides. , A folding portion 9 is provided which is folded in half outward to form a triangle and is folded into the outer surface side of the second side wall portion 6.

A first folding piece 11 is provided on the outer edge of the first side wall portion 4 via a fifth folding line 10, and holding pieces 13 are provided on both ends of the first folding piece 11 via a sixth folding line 12. ing. The holding piece 13 is bent from the sixth folding line 12 toward the outer surface side of the second side wall portion 6 and folded over the folding portion 9 folded on the outer surface side of the second side wall portion 6.
In this example, the holding piece 13 is formed to have a length exceeding the folding portion 9 on the front side.

A second folded piece 15 is provided on the outer edge of the second side wall portion 6 via a seventh folding line 14, and a second side wall portion is provided on the outer edge of the second folded piece 15 via an eighth folding line 16. A folding portion 9 folded on the outer surface side of 6 and a folding piece 17 folded inside the folding portion 9 and the holding piece 13 from below the holding piece 13 folded on the folding portion 9 are provided.

The box 1 of this example having such an unfolding structure is assembled as follows.
First, the first side wall portion 4 provided on the two opposite sides of the bottom portion 2 is bent and raised from the first folding line 3, and the second side wall portion provided on the other two opposite sides of the bottom portion 2 is provided. 6 is bent and raised from the second folding line 5, and is provided between the adjacent first side wall portion 4 and the second side wall portion 6 in synchronization with the rising of the first side wall portion 4 and the second side wall portion 6. The square folding portion 9 is folded in half outward from the diagonal line 18 to form a triangle, and is folded toward the outer surface side of the second side wall portion 6 (see FIG. 3).
At this time, since the folding portion 9 is not connected to the holding pieces 13 provided at both ends of the first folding piece 11, the folding portion 9 and the holding piece 13 are not restrained from each other and are folded. The portion 9 can be easily folded toward the outer surface side of the second side wall portion 6.

Next, the first folded piece 11 provided on the outer edge of the first side wall portion 4 is bent from the fifth folding line 10 to the outer surface side of the first side wall portion 4, and is provided at both ends of the first folded piece 11. The holding piece 13 is bent from the sixth folding line 12 toward the outer surface side of the second side wall portion 6 and folded over the folding portion 9 folded on the outer surface side of the second side wall portion 6 (see FIG. 4).

Next, the second folded piece 15 provided on the outer edge of the second side wall portion 6 is bent from the seventh folding line 14 to the outer surface side of the second side wall portion 6 and folded into the outer surface side of the second side wall portion 6. Fold it over the folded portion 9 and the holding piece 13 folded on the folded portion 9, and fold the folded piece 17 provided on the outer edge of the second folded piece 15 inward from the eighth folding line 16. , The box 1 is assembled by folding from below the folding portion 9 folded on the outer surface side of the second side wall portion 6 to the inside of the folding portion 9 (see FIG. 1).
In this example, since the holding piece 13 is formed to have a length exceeding the folding portion 9 on the front side (see FIG. 4), the folding piece 17 is a folding portion folded on the outer surface side of the second side wall portion 6. 9 and the folding portion 9 are folded from below the holding piece 13 folded onto the folding portion 9 and the holding piece 13 inside.

According to the box 1 of this example assembled in this way, the folding portion 9 folded into the outer surface side of the second side wall portion 6 is provided on both sides between the adjacent first side wall portion 4 and the second side wall portion 6. It is connected to the end edge via the third fold line 7 and the fourth fold line 8, respectively, and is formed into a square having both side edges as two sides, and is folded in half outward to form a triangle on the outer surface side of the second side wall portion 6. The position of the end surface 19 of the folding portion 9 which is folded in half to form a triangle is the same as the position of the opening end surface 20 of the first side wall portion 4 and the second side wall portion 6.

As a result, even if the content is a fine powder, there is no risk of leakage from between the folded portions 9, and even if the content is a liquid material, the liquid material permeates through the end surface 19 of the folded portion 9. There is no such thing, and even if the contents are powder or liquid, it can be filled in the box 1.

Further, the holding piece 13 provided on the outer edge of the first side wall portion 4 via the sixth folding line 12 on the first folding piece 11 provided via the fifth folding line 10 is the outer surface of the second side wall portion 6. The second folded piece 15 which is folded over the folded portion 9 which is folded to the side and is provided on the outer edge of the second side wall portion 6 via the seventh folded line 14 is provided via the eighth folded line 16. Since the folded piece 17 is folded into the inside of the folding portion 9 from below the folding portion 9 folded toward the outer surface side of the second side wall portion 6, the folding piece 17 is folded into the outer surface of the second side wall portion 6 and the folding portion 9. It will be sandwiched between and, and it will be a robust box.

In this example, since the holding piece 13 is formed to have a length exceeding the folding portion 9 on the front side, the second folded piece 15 provided on the outer edge of the second side wall portion 6 via the seventh folding line 14. The folding piece 17 provided through the eighth folding line 16 is a folding portion 9 folded on the outer surface side of the second side wall portion 6 and a folding portion 9 from below the pressing piece 13 folded on the folding portion 9. And can be folded inward of the holding piece 13, and the folding piece 17 is sandwiched between the outer surface of the second side wall portion 6 and the folding portion 9 and the holding piece 13 folded on the folding portion 9. , A more robust box.

1 Box 2 Bottom 3 1st folding line 4 1st side wall 5 2nd folding line 6 2nd side wall 7 3rd folding line 8 4th folding line 9 Folding part 10 5th folding line 11 1st folding piece 12 6th folding line 13 Holding piece 14 7th folding line 15 2nd folding piece 16 8th folding line 17 folding piece 18 diagonal line 19 end face 20 opening end face

Claims (5)

A box assembled from a single sheet, the first side wall provided on each of the two opposing sides of the rectangular bottom via the first fold line, and the other two opposing sides of the bottom. It is provided between the second side wall portion provided via the second folding line and the adjacent first side wall portion and the second side wall portion, and the third folding line and the fourth folding line are provided on both side edge edges, respectively. A folding portion formed into a square having two side edges connected to each other, folded in half outward to form a triangle, and folded toward the outer surface side of the second side wall portion, and the outside of the first side wall portion. A first folded piece provided on the edge edge via a fifth folded line and both ends of the first folded piece provided via a sixth folded line are bent toward the outer surface side of the second side wall portion. A holding piece that is folded over the folded portion that is folded on the outer surface side of the second side wall portion, and a holding piece that is provided on the outer edge of the second side wall portion via a seventh folding line. On the folded portion folded on the outer surface side of the side wall portion, the second folded piece folded on the holding piece folded on the folded portion, and the outer edge of the second folded piece. A box provided via an eighth folding line and provided with a folding piece that is folded on the outer surface side of the second side wall portion and is folded from below the folding portion to the inside of the folding portion. Above the folded portion, which is provided at both ends of the first folded piece via a sixth folding line, is bent toward the outer surface side of the second side wall portion, and is folded toward the outer surface side of the second side wall portion. The box according to claim 1, wherein the holding piece to be folded is formed in a length exceeding at least the folding portion on the front side. The box according to claim 1 or 2, wherein the sheet is liquid-resistant processed at least on one surface which is an inner surface. The box according to any one of claims 1 to 3, wherein the sheet is made of paper. The box according to any one of claims 1 to 4, wherein the sheet is a corrugated cardboard sheet.

Images