JP6819105B2 - Packaging container - Google Patents

Description

The present invention relates to a packaging container for packaging a product.

The conventional packaging container is disclosed in Patent Document 1. In this packaging container, an inner box having a storage portion with a part of the side surface opened is fitted to a tubular outer box. By sliding the inner box, the inner box is pulled out from the outer box, and the contents in the storage portion can be taken out through the opening on the side surface of the inner box.

No. 52-25130 (Pages 2-4, Fig. 3)

However, according to the conventional packaging container, the inner box can be slid only by pulling or pressing one end of the inner box. Therefore, there is a problem that a child such as an infant can easily take out the inner box, and the child may accidentally swallow the contents.

An object of the present invention is to provide a packaging container that can improve safety for children.

In order to achieve the above object, the present invention
In a packaging container including a tubular outer box that opens both ends in the axial direction and an inner box in which a storage portion facing the inner surface of the outer box is recessed and fitted to the outer box.
The outer box has a first outer box flap that is bent inward from both ends in the axial direction, and the inner box is connected to the peripheral wall of the storage portion and is bent onto the first outer box flap. It is characterized in that it has an inner box flap, and an inner box insertion piece that is inserted between the inner box and the outer box by bending is provided at the tip of the inner box flap.

According to this configuration, the contents are stored in the storage portion of the inner box. The inner box is inserted into the outer box through the opening of the outer box, and is slid in the axial direction of the outer box to fit into the outer box. At this time, the first outer box flap is bent inward, and the inner box flap is folded onto the first outer box flap. Then, the inner box insertion piece at the tip of the inner box flap is inserted between the inner box and the outer box.

Further, in the packaging container having the above structure, it is preferable to provide an outer box insertion piece inserted between the inner box and the outer box by bending at the tip of the first outer box flap.

Further, according to the present invention, in the packaging container having the above configuration, a second outer box flap having a slit into which the inner box insertion piece is inserted and being bent inward from both ends in the axial direction of the outer box is provided. preferable.

Further, in the present invention, it is preferable that the outer box and the inner box have a quadrangular cross-sectional shape perpendicular to the axial direction in the packaging container having the above configuration.

Further, according to the present invention, in the packaging container having the above configuration, the first outer box flap is continuously provided on each of the two facing side plates of the outer box, and the inner box flap is continuously provided on the opening end of the storage portion. Is preferable.

Further, in the present invention, in the packaging container having the above configuration, the cross-sectional shape is formed in a point-symmetrical shape, and the inner box insertion piece has claws formed by notches at both ends on the root side, and the first. It is preferable that the outer box flaps have engaging portions that engage with the claw portions at both ends on the root side.

According to the present invention, the outer box has a first outer box flap that is folded inward, and the inner box has an inner box flap that is folded onto the first outer box flap. Further, an inner box insertion piece to be inserted between the inner box and the outer box is provided at the tip of the inner box flap. As a result, even if one end of the inner box is towed or pressed, the inner box cannot be slid, and a child such as an infant cannot easily take out the inner box. Therefore, the safety of the packaging container for children can be improved.

Perspective view which shows the packaging container of 1st Embodiment of this invention. Perspective view which shows the outer box of the packaging container of 1st Embodiment of this invention. Perspective view which shows the inner box of the packaging container of 1st Embodiment of this invention. A development view which shows the blank plate of the outer box of the packaging container of 1st Embodiment of this invention. A development view showing a blank plate of an inner box of a packaging container according to a first embodiment of the present invention. Side sectional view showing the packaging container of the first embodiment of the present invention. A perspective view showing a state in which the first outer box flap and the inner box flap of the packaging container of the first embodiment of the present invention are opened. A perspective view showing a state in which the inner box of the packaging container according to the first embodiment of the present invention is pulled out from the outer box. A development view showing a blank plate of the outer box of the packaging container of the second embodiment of the present invention. A development view showing a blank plate of an outer box of a packaging container according to a third embodiment of the present invention. A development view showing a blank plate of an inner box of a packaging container according to a third embodiment of the present invention. A development view which shows the blank plate of the outer box of the packaging container of 4th Embodiment of this invention.

<First Embodiment>
An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a perspective view of the packaging container of the first embodiment. The packaging container 1 includes a tubular outer box 10 and an inner box 20 that fits into the outer box 10. The outer box 10 and the inner box 20 are formed by bending paper blank plates 100 and 200 (see FIGS. 4 and 5), respectively.

FIG. 2 shows a perspective view of the outer box 10. The outer box 10 has a body portion 11 that opens openings 11a at both ends in the axial direction A. A plurality of peripheral plates composed of a side plate 12, a top plate 13, a side plate 14, and a bottom plate 15 are sequentially provided in the body 11 via a folding line 90 (see FIG. 4). A glue margin piece 16 connected to the bottom plate 15 is adhered to the side plate 12, and the body portion 11 is formed in a tubular shape. As a result, a rectangular cross-sectional shape perpendicular to the axial direction A of the outer box 10 is formed.

Side flaps 12a and 12b (first outer box flaps) are continuously provided at both ends of the side plate 12 in the axial direction A via folding lines 90 (see FIG. 4). Side flaps 14a and 14b (first outer box flaps) are continuously provided at both ends of the side plate 14 in the axial direction A via folding lines 90 (see FIG. 4). The side flaps 12a, 12b, 14a, 14b are bent toward the inside of the outer box 10 via the folding line 90.

One end of the side flaps 12a and 12b on the root side (side plate 12 side) engages with the claw portion 26e (see FIG. 3) of the front insertion piece 26c and the claw portion (not shown) of the back insertion piece 27c, which will be described later. An engaging portion 12c is provided. At one end of the side flaps 14a and 14b on the root side (side plate 14 side), an engaging portion 14c that engages with the claw portion 26e and the claw portion of the back insertion piece 27c is provided.

Information on products and information on how to pull out the inner box 20, which will be described later, are printed on the upper surface (outer surface) of the top plate 13 and the outer surfaces of the side plates 12 and 14. As a result, it is possible to appeal the product as the content, and adults including the elderly can easily pull out the inner box 20. Instead of printing, a sheet or the like printed with the above information may be attached to the upper surface (outer surface) of the top plate 13 and the outer surfaces of the side plates 12 and 14.

FIG. 3 shows a perspective view of the inner box 20. The inner box 20 has a rectangular cross section perpendicular to the axial direction A, and the upper surface is opened to provide a recessed storage portion 21 for storing the contents (not shown). As a result, the storage portion 21 is arranged so as to face the inner surface of the top plate 13 of the outer box 10. The contents are not particularly limited, and examples thereof include pharmaceuticals and cosmetics. When the contents are liquid, they are stored in a liquid storage container (not shown) such as a bottle, and the liquid storage container containing the contents is stored in the storage unit 21.

The storage portion 21 is surrounded by a peripheral wall 29 erected from the peripheral edge of the bottom wall 28. The peripheral wall 29 is formed by a front surface portion 26, a back surface portion 27, and side surface portions 22, 24. A front flap 26b (inner box flap) is provided at the upper end of the front surface portion 26. A back flap 27b (inner box flap) is provided at the upper end of the back surface portion 27. As a result, the front flap 26b and the back flap 27b are continuously provided on the peripheral wall 29 of the storage portion 21. That is, the front flap 26b and the back flap 27b are continuously provided at the open end of the storage portion 21.

4 and 5 show development views of the outer box 10 and the inner box 20, respectively. The blank plate 100 forming the outer box 10 and the blank plate 200 forming the inner box 20 are formed by punching out a paper sheet.

The materials of the blank plates 100 and 200 are not particularly limited, and for example, paperboards such as Manila balls, cardboards, card papers, and kraft balls, and thin corrugated cardboards can be used. Further, the blank plates 100 and 200 may be formed from a thin transparent resin sheet. For example, PET (polyethylene terephthalate) or PP (polypropylene) can be used as the material of the transparent resin sheet. As a result, the customer or the like can easily visually recognize the contents stored in the packaging container 1. The blank plates 100 and 200 may be formed of an opaque resin sheet. Further, the material of the blank plate 200 and the material of the blank plate 100 may be different.

In the blank plate 100, a side plate 12, a top plate 13, a side plate 14, a bottom plate 15, and a glue margin piece 16 are connected in order via a folding line 90. Side flaps 12a and 12b are connected to the front (lower in the drawing) and the rear (upper in the drawing) of the side plate 12 via the folding line 90, respectively. Side flaps 14a and 14b are connected to the front and rear of the side plate 14 via the folding line 90, respectively.

The side plate 12 is bent at the folding line 90 toward the inner surface side of the top plate 13, and the bottom plate 15 is bent at the folding line 90 toward the inner surface side of the side plate 14. Then, the outer surface of the glue margin piece 16 is adhered to the inner surface of the side plate 12 with an adhesive or the like.

As a result, the outer box 10 is formed in a flat state in which the body portion 11 is crushed flat. The outer box 10 is transported and stored in a flat state (folded body) having a small volume, and is discarded after being reduced in volume.

When the flat outer box 10 is pressed by fingers in the direction in which the folding lines 90 at the left and right ends approach each other, the body portion 11 is raised into a tubular shape. As a result, the side plates 12 and 14 are arranged substantially perpendicular to the top plate 13 and the bottom plate 15.

In the blank plate 200, a reinforcing plate 28b, an inner surface plate 24b, an outer surface plate 24a, a bottom plate 28a, an outer surface plate 22a, an inner surface plate 22b, and a folded piece 22d are sequentially provided via a folding line 90. A convex portion 28c is formed at one end of the reinforcing plate 28b, and a U-shaped notch 22e having both ends arranged on the folding line 90 is formed at the boundary between the inner surface plate 22b and the folded piece 22d.

A front plate 26a and a back plate 27a are connected to the front (lower in the drawing) and the rear (upper in the drawing) of the bottom plate 28a via folding lines 90, respectively. A front flap 26b is continuously provided above the front plate 26a (lower in the drawing) via a fold line 90, and a front insertion piece 26c is continuously provided at the lower end of the front flap 26b via a fold line 90. Notches 26f are formed on both sides of the folding line 90 at the boundary between the front flap 26b and the front insertion piece 26c. The notches 26f are arranged on both sides of the fold line 90 on the tip side of the front insertion piece 26c with respect to the fold line 90, and reach the side ends of the front flap 26b.

A back flap 27b is continuously provided above the back plate 27a via a fold line 90, and a back insertion piece 27c is continuously provided at the lower end (upper end in the drawing) of the back flap 27b via the fold line 90. Notches 27f are formed on both sides of the folding line 90 at the boundary between the back flap 27b and the back insertion piece 27c. The notches 27f are arranged on both sides of the fold line 90 on the tip side of the back insertion piece 27c with respect to the fold line 90, and reach the side ends of the back flap 27b.

Side flaps 26g are continuously provided on both sides of the front plate 26a via folding lines 90. Side flaps 27g are continuously provided on both sides of the back plate 27a via folding lines 90.

The front plate 26a and the back plate 27a are erected by bending from the bottom plate 28a. The front plate 26a and the back plate 27a form the front portion 26 (see FIG. 3) and the back portion 27 (see FIG. 3) of the storage portion 21.

The side flaps 26g and 27g are bent at the folding line 90 toward the inner surface side of the front plate 26a and the back plate 27a, respectively. The front flap 26b and the back flap 27b are bent at the folding line 90 toward the outer surface side of the front plate 26a and the back plate 27a, respectively.

Next, the outer surface plates 22a and 24a are bent and erected from the bottom plate 28a, and the inner surface plates 22b and 24b are overlapped and bent on the inner surface of the outer surface plates 22a and 24a. The outer surface plate 22a and the inner surface plate 22b form the side surface portion 22 (see FIG. 3), and the outer surface plate 24a and the inner surface plate 24b form the side surface portion 24 (see FIG. 3).

At this time, the left side flap 26g and the left side flap 27g are arranged between the outer surface plate 22a and the inner surface plate 22b, and the right side flap 26g and the right side flap 27g are the outer surface plate 24a and the inner surface plate 24a. It is arranged between the face plate 24b.

Further, the folded piece 22d is overlapped on the bottom plate 28a and bent at the folding line 90, and the slit 22f (see FIG. 3) is formed by the notch 22e. The reinforcing plate 28b is overlapped with the bottom plate 28a and bent at the folding line 90, and the convex portion 28c is inserted into the slit 22f. The bottom wall 28 (see FIG. 3) of the storage portion 21 is formed by the bottom plate 28a and the reinforcing plate 28b. At this time, the reinforcing plate 28b is arranged above the folded piece 22d to prevent the inner surface plates 22b and 24b from rising. As a result, the inner box 20 shown in FIG. 3 is formed.

The inner box 20 in which the contents are stored in the storage portion 21 (see FIG. 3) is inserted into the outer box 10 through the opening 11a (see FIG. 2) so that the bottom plate 15 and the bottom wall 28 face each other. .. Next, the side flaps 12a, 12b, 14a, 14b of the outer box 10 are bent inward at the fold line 90.

After that, the front flap 26b is bent onto the side flaps 12a and 14a via the folding line 90, and the front insertion piece 26c is inserted between the bottom plate 15 of the outer box 10 and the bottom wall 28 of the inner box 20. .. Further, the back flap 27b is bent onto the side flaps 12b and 14b via the folding line 90, and the back insertion piece 27c is inserted between the bottom plate 15 of the outer box 10 and the bottom wall 28 of the inner box 20. ..

At this time, the claw portions 26e (see FIG. 3) formed at both ends of the front insertion piece 26c on the root side by the notch 26f engage with the engaging portions 12c and 14c of the side flaps 12a and 14a. Further, the claws (not shown) formed at both ends of the back insertion piece 27c on the root side by the notch 27f engage with the engaging portions 12c and 14c of the side flaps 12b and 14b. As a result, the front insertion piece 26c and the back insertion piece 27c are prevented from coming off.

As a result, the packaging container 1 shown in FIG. 1 is formed. The outer box 10 and the inner box 20 may be adhered to each other by using an adhesive tape member or the like.

FIG. 6 shows a side sectional view of the rear part of the packaging container 1. Since the configuration of the front portion of the packaging container 1 is the same as the configuration of the rear portion, the rear portion of the packaging container 1 will be described as a representative. The side flap 14b is arranged between the back plate 27a and the back flap 27b, and the back insertion piece 27c is sandwiched between the bottom plate 15 and the bottom plate 28a. At this time, the claw portion 27e of the back insertion piece 27c engages with the engaging portion 14c of the side flap 14b. As a result, the opening 11a of the outer box 10 is closed by the front flap 26b and the back flap 27b.

When the contents are taken out from the packaging container 1 in which the opening 11a is closed, the user pulls out the front insertion piece 26c and the back insertion piece 27c from between the outer box 10 and the inner box 20. FIG. 7 shows a perspective view of the packaging container 1 at this time. Then, the user pulls or presses the front surface portion 26 or the back surface portion 27 to slide the inner box 20 in the axial direction A. FIG. 8 shows a perspective view of the packaging container 1 at this time. As a result, the upper surface of the storage portion 21 of the inner box 20 is opened to open the packaging container 1, and the user can take out the contents from the storage portion 21.

In the packaging container 1 in which the opening 11a is closed, the gap between the top plate 13 and the inner box 20 of the outer box 10 and the gap between the bottom plate 15 and the inner box 20 are visually recognized. Therefore, a user who does not know how to open the packaging container 1 usually presses on the front flap 26b or the back flap 27b to try to slide the inner box 20. At this time, the side flaps 12a, 12b, 14a, 14b restrict the sliding of the inner box 20, and the inner box 20 cannot be slid. Therefore, since a child such as an infant cannot easily pull out the inner box 20, it is possible to prevent the child from accidentally swallowing the contents.

On the other hand, the packaging container 1 is opened by a simple method of pulling out the front insertion piece 26c and the back insertion piece 27c. Therefore, adults including the elderly can easily understand that the front insertion piece 26c and the back insertion piece 27c are pulled out when the inner box 20 is restricted from sliding. Further, even if the method of pulling out the inner box 20 is not initially understood, it can be understood by looking at the information on the method of pulling out the inner box 20 printed on the packaging container 1.

According to this embodiment, the outer box 10 has side flaps 12a, 12b, 14a, 14b (first outer box flaps) that are bent inward. The inner box 20 has a front flap 26b (inner box flap) folded onto the side flaps 12a, 14a and a back flap 27b (inner box flap) folded onto the side flaps 12b, 14b. Further, at the tips of the front flap 26b and the back flap 27b, a front insertion piece 26c (inner box insertion piece) and a back insertion piece 27c (inner box insertion piece) inserted between the inner box 20 and the outer box 10 are respectively. Provided. As a result, even if one end of the inner box 20 is pulled or pressed, the inner box 20 cannot be slid, and a child such as an infant cannot easily take out the inner box 20. Therefore, the safety of the packaging container 1 for children can be improved.

Further, a rectangular cross-sectional shape perpendicular to the axial direction A of the outer box 10 and the inner box 20 is formed. Therefore, the inner box flaps (front flap 26b, back flap 27b) can be provided on the surface adjacent to the forming surface of the first outer box flaps (side flaps 12a, 12b, 14a, 14b), and the first outer box flaps can be provided. An inner box flap that overlaps over a large area can be easily realized. As a result, the inner box 20 can be more reliably slid-regulated.

The cross-sectional shape of the outer box 10 and the inner box 20 perpendicular to the axial direction A may be another quadrangle (trapezoid, parallelogram, etc.). Further, although the area where the first outer box flap and the inner box flap overlap is reduced, the cross-sectional shape of the outer box 10 and the inner box 20 perpendicular to the axial direction A may be another polygon such as a hexagon.

Further, side flaps 12a, 12b, 14a, 14b are continuously provided on the opposite side plates 12 and 14 of the outer box 10, and the front flap 26b and the back flap 27b are connected to the opening end (upper end of the peripheral wall 29) of the storage portion 21. Will be set up. As a result, the front insertion piece 26c and the back insertion piece 27c can be inserted into the bottom wall 28 side facing the opening surface of the storage portion 21, and the aesthetic appearance of the packaging container 1 can be improved. The front flap 26b and the back flap 27b may be connected to the bottom wall 28 of the inner box 20.

<Second Embodiment>
Next, a second embodiment of the present invention will be described. FIG. 9 shows a development view of the outer box 10 of the packaging container 1 of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 8 are designated by the same reference numerals. In the present embodiment, the configurations of the side flaps 12a, 12b, 14a, and 14b are different from those in the first embodiment. Other parts are the same as those in the first embodiment.

The lengths of the side flaps 12a and 12b in the left-right direction (vertical direction in the drawing) are substantially the same as the lengths of the top plate 13 and the bottom plate 15 in the left-right direction. At the tips of the side flaps 12a and 12b, a side insertion piece 12g (outer box insertion piece) inserted between the side surface 24 of the inner box 20 and the side plate 14 of the outer box 10 is continuously provided via a folding line 90. Will be done. Further, the length of the side insertion piece 12g in the vertical direction (horizontal direction in the figure) is shorter than the length of the side flaps 12a and 12b in the vertical direction (horizontal direction in the figure).

Further, on the side flaps 14a and 14b, U-shaped notches 14d having both ends arranged on the folding line 90 are provided.

In the blank plate 100 of FIG. 9, when the side flaps 14a and 14b are bent toward the inner surface side of the side plate 14 via the folding line 90, a slit 14e (not shown) is formed by the notch 14d. The front and rear side insertion pieces 12g are inserted into the front and rear slits 14e, respectively, and are arranged between the inner box 20 and the outer box 10. At this time, the upper and lower ends of the side insertion piece 12g come into contact with the upper and lower ends of the slit 14e. As a result, the inner box 20 can be more reliably slid-regulated.

The side flaps 14a and 14b may be omitted. In this case, 12 g of the side insertion piece is directly inserted between the inner box 20 and the outer box 10.

The same effect as that of the first embodiment can be obtained in this embodiment as well. Further, 12 g of side insertion pieces (outer box insertion pieces) to be inserted between the inner box 20 and the outer box 10 are continuously provided at the tips of the side flaps 12a and 12b. As a result, the inner box 20 can be more reliably slid-regulated. Therefore, the safety of the packaging container 1 for children can be further improved.

In the present embodiment, the side insertion pieces 12g are connected to the tips of the side flaps 12a and 12b, and the slits 14e are formed in the side flaps 14a and 14b. Instead of this, the tips of the side flaps 14a and 14b are formed. A side insertion piece similar to the side insertion piece 12g may be continuously provided in the side flaps 12a and 12b, and a slit similar to the slit 14e may be formed in the side flaps 12a and 12b.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. 10 and 11 show development views of the outer box 10 and the inner box 20 of the packaging container 1 of the third embodiment, respectively. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 8 are designated by the same reference numerals. This embodiment is different from the first embodiment in that the bottom flap 15a is continuously provided on the bottom plate 15 of the outer box 10. Further, the configurations of the front insertion piece 26c and the back insertion piece 27c of the inner box 20 are different from those of the first embodiment. Other parts are the same as those in the first embodiment.

Bottom flaps 15a (second outer box flaps) are continuously provided in front of (lower in the figure) and rear (upper in the figure) of the bottom plate 15 of the outer box 10 via folding lines 90. A U-shaped notch 15b having both ends arranged on the folding line 90 is provided on the bottom flap 15a. Further, the left-right lengths of the front insertion piece 26c and the back insertion piece 27c of the inner box 20 are shorter than the left-right lengths of the front flap 26b and the back flap 27b.

In the blank plate 100 of FIG. 10, when the bottom flap 15a is bent toward the inner surface side of the bottom plate 15 via the folding line 90, a slit 15c (not shown) is formed by the notch 15b. The front insertion piece 26c and the back insertion piece 27c are inserted into the front and rear slits 15c, respectively, and are arranged between the inner box 20 and the outer box 10. At this time, both side ends of the front insertion piece 26c and the back insertion piece 27c abut on both side ends of the slit 15c. As a result, the inner box 20 can be more reliably slid-regulated.

The same effect as that of the first embodiment can be obtained in this embodiment as well. Further, a bottom flap 15a (second outer box flap) having a slit 15c into which the front insertion piece 26c (inner box insertion piece) and the back insertion piece 27c (inner box insertion piece) are inserted is provided. As a result, the inner box 20 can be more reliably slid-regulated. Therefore, the safety of the packaging container 1 for children can be further improved.

The outer box 10 of the second embodiment may be provided with the same bottom flap as the bottom flap 15a of the present embodiment. Further, the front insertion piece 26c and the back insertion piece 27c of the inner box 20 of the second embodiment may be configured in the same manner as the front insertion piece 26c and the back insertion piece 27c of the present embodiment.

<Fourth Embodiment>
Next, a fourth embodiment of the present invention will be described. FIG. 12 shows a development view of the outer box 10 of the packaging container 1 of the fourth embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 8 are designated by the same reference numerals. In the present embodiment, the configurations of the side flaps 12a, 12b, 14a, 14b (first outer box flaps) are different from those in the first embodiment. Other parts are the same as those in the first embodiment.

The cross-sectional shapes of the outer box 10 and the inner box 20 perpendicular to the axial direction A are formed in a point-symmetrical shape such as a rectangle or a parallelogram. At both ends of the side flaps 12a and 12b on the root side (side plate 12 side), the claw portion 26e (see FIG. 3) of the front insertion piece 26c and the engaging portion 12c engaging with the claw portion of the back insertion piece 27c are provided. Provided. At both ends of the side flaps 14a and 14b on the root side (side plate 14 side), engaging portions 14c that engage with the claw portions of the claw portion 26e and the back insertion piece 27c are provided.

As a result, even when the user fits the inner box 20 to the outer box 10 with the bottom plate 15 of the outer box 10 facing up, the claws of the claw portion 26e and the back insertion piece 27c are engaged with the engaging portions 12c and 14c. Can be engaged.

The same effect as that of the first embodiment can be obtained in this embodiment as well. Further, the cross-sectional shape perpendicular to the axial direction A of the outer box 10 and the inner box 20 is formed in a point-symmetrical shape, and the side flaps 12a, 12b, 14a, 14b (first outer box flap) are inserted into the claw portion 26e and the back surface. Engaging portions 12c and 14c that engage with the claw portion of the piece 27c are provided at both ends on the root side. As a result, even when the user fits the inner box 20 to the outer box 10 with the bottom plate 15 of the outer box 10 facing up, the claws of the claw portion 26e and the back insertion piece 27c are engaged with the engaging portions 12c and 14c. Can be engaged. Therefore, the front insertion piece 26c and the back insertion piece 27c are more reliably prevented from coming off.

In this embodiment, a side insertion piece similar to the side insertion piece 12g of the second embodiment may be provided, and a slit similar to the slit 14e may be provided.

Further, the outer box 10 of the present embodiment may be provided with the same bottom flap as the bottom flap 15a of the third embodiment. Further, the front insertion piece 26c and the back insertion piece 27c of the inner box 20 of the present embodiment may be configured in the same manner as the front insertion piece 26c and the back insertion piece 27c of the third embodiment.

The present invention can be used in a packaging container for packaging a product.

1 Packaging container 10 Outer box 11 Body 12, 14 Side plates 12a, 12b, 14a, 14b Side flaps (first outer box flap)
12c, 14c Engagement part 12g Side insertion piece (outer box insertion piece)
13 Top plate 15 Bottom plate 15a Bottom flap (second outer box flap)
15b Notch 16 Glue allowance piece 20 Inner box 21 Storage part 22, 24 Side parts 22a, 24a Outer surface plate 22b, 24b Inner surface plate 26 Front part 26a Front plate 26b Front flap (inner box flap)
26c Front insertion piece (inner box insertion piece)
26e Claw part 26f Notch 26g Side flap 27 Back part 27a Back plate 27b Back flap (inner box flap)
27c Back insertion piece (inner box insertion piece)
27f Notch 27g Side flap 28 Bottom wall 28a Bottom plate 28b Reinforcing plate 29 Peripheral wall 90 Fold line 100, 200 Blank plate

Claims (6)

In a packaging container including a tubular outer box that opens both ends in the axial direction and an inner box in which a storage portion facing the inner surface of the outer box is recessed and fitted to the outer box.
The outer box has a first outer box flap that is bent inward from both ends in the axial direction, and the inner box is connected to the peripheral wall of the storage portion and is bent onto the first outer box flap. The inner box flaps are provided at both ends in the axial direction, and an inner box insertion piece to be inserted between the inner box and the outer box by bending is provided at the tip of each inner box flap. Packaging container. The packaging container according to claim 1, wherein an outer box insertion piece to be inserted between the inner box and the outer box is provided at the tip of the first outer box flap by bending. Claim 1 or claim 2 is provided with a second outer box flap having a slit into which the inner box insertion piece is inserted and being bent inward from both ends in the axial direction of the outer box. The packaging container described in. The packaging container according to any one of claims 1 to 3, wherein a cross-sectional shape perpendicular to the axial direction of the outer box and the inner box is formed in a quadrangular shape. The fourth aspect of claim 4, wherein the first outer box flap is connected to each of the two facing side plates of the outer box, and the inner box flap is connected to the opening end of the storage portion. Packaging container. The cross-sectional shape is formed to be point-symmetrical, the inner box insertion piece has claws formed by notches at both ends on the root side, and the first outer box flap engages with the claws. The packaging container according to claim 4 or 5, wherein the joint portions are provided at both ends on the root side.

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