JP7474019B2 - Packaging container and blank set - Google Patents

Description

The present invention relates to a packaging container and a blank set for the packaging container.

A packaging container that stores multiple stick-shaped products includes, for example, a sleeve-shaped outer box and an inner box that is housed in the outer box and can slide. Such packaging containers are disclosed in Patent Documents 1 and 2, etc.

JP 2009-507731 A JP 2016-539870 A

The above packaging containers allow products to be stored upright. However, as the number of products stored decreases, they tend to tip over, making it difficult to remove products.

A first aspect of the present invention is a packaging container in which a plurality of stick-shaped products are stored upright, the packaging container comprising: a rectangular, cylindrical outer box; and an inner box slidably accommodated in the outer box, the outer box comprising a first surface which is a top surface, a second surface opposite to the first surface, a third surface which shares one side with each of the first surface and the second surface, and a fourth surface opposite to the third surface, and the outer box is open on at least one side in a sliding direction of the inner box, the inner box comprising a bottom corresponding to the second surface, a first side wall corresponding to the third surface, a second side wall corresponding to the fourth surface, and a fourth surface opposite to the third surface. the bottom of the inner box is rectangular, a height from the bottom of the first side wall to the opening is greater than a length of a side of the bottom that intersects with the sliding direction, and the first side wall has a first flap formed by folding a part of the first side wall defined by a first cut that constitutes a part of a ring toward the second side wall, around a first fold line that constitutes the remainder of the ring.

A second aspect of the present invention is a blank set for storing a plurality of stick-shaped products upright, the blank set comprising: an outer box blank that is rectangular and can be assembled into a cylindrical shape; and an inner box blank that is slidably contained in the outer box and can be assembled into a rectangular parallelepiped shape having an opening. The outer box comprises a first surface that is a top surface, a second surface opposite to the first surface, a third surface that shares one side with each of the first surface and the second surface, and a fourth surface opposite to the third surface, and is open on at least one side in a sliding direction of the inner box. The inner box comprises a bottom corresponding to the second surface, a first side wall corresponding to the third surface, a second side wall corresponding to the fourth surface, a third side wall that shares one side with each of the bottom, the first side wall, and the second side wall, and a fourth side wall opposite to the third side wall. the blank for the outer box has an opening corresponding to the first surface, the first surface, the third surface, the second surface, and the fourth surface are arranged side by side in this order in a direction intersecting the sliding direction, and the blank for the inner box has the first side wall, the third side wall, the second side wall, and the fourth side wall arranged side by side in this order along the sliding direction and the bottom is arranged adjacent to the first side wall or the second side wall in the direction intersecting the sliding direction , the bottom of the blank for the inner box is rectangular, a height from the bottom of the first side wall to the opening is greater than a length of a side of the bottom intersecting the sliding direction, and the first side wall of the blank for the inner box has a first slit forming a part of a ring and a fold line forming a remainder of the ring.

This invention prevents products stored in a packaging container from falling over.

FIG. 2 is a perspective view showing an example of an outer box according to the present invention. FIG. 11 is a perspective view showing another example of an outer box according to the present invention. FIG. 2 is a perspective view showing an example of an inner box according to the present invention. 2B is a cross-sectional view of the inner box of FIG. 2A taken along line XX. FIG. 1 is a perspective view showing an example of a packaging container according to the present invention. FIG. 2 is a perspective view showing an example of a first flap according to the present invention. FIG. 11 is a perspective view showing another example of the first flap according to the present invention. FIG. 11 is a perspective view showing still another example of the first flap according to the present invention. FIG. 11 is a perspective view showing another example of a packaging container according to the present invention. FIG. 2 is a cross-sectional view showing an example of a main part of an inner box according to the present invention. FIG. 11 is a cross-sectional view showing another example of a main part of the inner box according to the present invention. 13 is a cross-sectional view showing still another example of a main part of the inner box according to the present invention. FIG. 13 is a cross-sectional view showing still another example of a main part of the inner box according to the present invention. FIG. 13 is a cross-sectional view showing still another example of a main part of the inner box according to the present invention. FIG. 13 is a cross-sectional view showing still another example of a main part of the inner box according to the present invention. FIG. FIG. 11 is a perspective view showing yet another example of a packaging container according to the present invention. FIG. 11 is a perspective view showing still another example of a packaging container according to the present invention. FIG. 2 is a top view showing an example of an outer box blank according to the present invention. FIG. 10B is a top view showing the outer box blank shown in FIG. 10A folded into a cylindrical shape. FIG. 2 is a top view showing an example of an inner box blank according to the present invention. FIG. 11B is a top view showing the inner box blank shown in FIG. 11A folded into a cylindrical shape.

In this embodiment, a flap is provided inside the inner box. This prevents products stored in the inner box from falling over. This makes it easier to take out and store products. The flap in this embodiment is formed by folding a portion of the inner box inward, so it has a very simple structure. This allows the inner box and the outer box that contains it to be made thinner.

In addition, the flap prevents the inner box from being crushed. At the same time, because the flap is reversibly formed, the inner box can be easily transformed into a sheet-like shape, making it convenient for reuse, disposal, or recovery.

The blank for the inner box does not require a special area for forming the flaps, so the blank's outer shape can be simplified and the blank can be efficiently punched out from a single sheet of material. In addition, the cuts for the flaps can be formed, for example, at the same time as punching out the sheet of material, simplifying the manufacturing process.

When assembling the packaging container, the flaps can be formed simply by folding the slits made in the blank for the inner box. This reduces the number of parts and makes the assembly process extremely simple.

(1) Packaging Container The packaging container according to this embodiment includes a rectangular, cylindrical outer box and an inner box that is slidably accommodated in the outer box. A product is stored upright in the inner box. An opening is formed at the top of the inner box. A user can pull the inner box out of the outer box and grab and remove the product by grasping the top of the product through the opening. A user can also pull the inner box out of the outer box and store the product in the inner box through the opening. The packaging container may be made of, for example, paper or resin.

The products that can be stored in the packaging container according to this embodiment are not particularly limited. The packaging container according to this embodiment is particularly suitable for storing stick-shaped foods, luxury items, confectioneries, etc., granular foods, luxury items, confectioneries, medicines, supplements, etc. stored in stick-shaped packages, or granular foods, luxury items, confectioneries, medicines, supplements, etc. stored in press through pack (PTP) sheets.

(1-1) Outer Box The outer box is a rectangular cylindrical body. The outer box has a first surface, a second surface opposite the first surface, a third surface sharing one side with each of the first surface and the second surface, and a fourth surface opposite the third surface. The first surface is a top surface, and the second surface is a bottom surface. The outer box is placed with the first surface facing upward. The outer box is open on at least one side in the sliding direction of the inner box.

The first surface may be rectangular. Usually, the first surface and the opposing second surface are of the same shape and size. The third surface and the opposing fourth surface are of the same shape and size. If the third surface (fourth surface) is larger than the first surface (second surface), i.e., if the outer box is vertically long, a notch may be provided on the opening side of the third and fourth surfaces in the sliding direction to facilitate pulling out the inner box. The shape of the notch is not particularly limited and may be rectangular, semicircular, triangular, etc.

FIG. 1A is a perspective view showing an example of an outer box according to the present embodiment.
The outer box 10A includes a first surface 11, a second surface 12 opposite the first surface 11, a third surface 13 sharing one side with each of the first surface 11 and the second surface 12, and a fourth surface 14 opposite the third surface 13. The first surface 11 is a rectangle that is long in the sliding direction A of the inner box. The outer box 10A is open on both sides in the sliding direction A of the inner box, and the inner box can be inserted and removed from either the left or right direction in FIG. 1A.

The third surface 13 and the fourth surface 14 are larger than the first surface 11 and the second surface 12, and the outer box is elongated. A semicircular cutout 16 is provided in each of the open edges of the third surface 13 and the fourth surface 14. The cutouts 16 in the third surface 13 and the fourth surface 14 are arranged to face each other.

FIG. 1B is a perspective view showing another example of the outer box according to the present embodiment.
The outer box 10B has a similar configuration to the outer box 10A shown in Fig. 1A except that one side in the sliding direction A of the inner box is open and the inner box can be inserted and removed from the right side in Fig. 1B. The other side of the outer box 10B in the sliding direction A is covered by a fifth surface 15.

(1-2) Inner Box The inner box is slidably housed in the outer box.
The inner box includes a bottom portion corresponding to the second surface of the outer box, a first side wall corresponding to the third surface of the outer box, a second side wall corresponding to the fourth surface of the outer box, a third side wall sharing one side with each of the bottom portion, the first side wall, and the second side wall, and a fourth side wall opposite the third side wall. The inner box has an opening corresponding to the first surface of the outer box, and is housed in the outer box with the opening facing upward. The third side wall and the fourth side wall face in the sliding direction.

The bottom may be rectangular. Typically, the second surface of the outer box and the bottom of the inner box are roughly the same shape, and the bottom of the inner box is sized to fit snugly over the second surface of the outer box.

The first side wall (second side wall) of the inner box may be substantially the same shape as the third surface (fourth surface) of the outer box, and the first side wall (second side wall) of the inner box may be sized to overlap the third surface (fourth surface) of the outer box without any gap. The first side wall (second side wall) may be sufficiently smaller than the third surface (fourth surface) of the outer box. For example, the distance from the bottom of the first side wall to the opening (hereinafter referred to as the height H ₂₀ of the inner box) may be sufficiently smaller than the distance from the first surface to the second surface of the outer box (hereinafter referred to as the height H ₁₀ of the outer box). In this case, the stored product is easy to take out. However, it is desirable that the height H ₂₀ of the inner box is 1/2 or more of the height H ₁₀ of the outer box in order to easily prevent the product from jumping out when the inner box is inserted or removed. When _H10 ≈ _H20 , a notch may be provided on the edge of the opening side of at least one of the first side wall and the second side wall in order to facilitate removal of the stored products. The shape of the notch is not particularly limited and may be rectangular, semicircular, triangular, etc.

The height _H20 of the inner box may be greater than the length of the side in the direction intersecting the sliding direction of the bottom (hereinafter referred to as the intersecting direction) (hereinafter referred to as the thickness T of the inner box). The height _H20 of the inner box may be three times or more, five times or more, or eight times or more, of the thickness T of the inner box. When the inner box is of such a thin vertical type, the product is more likely to fall over, and therefore the effect of the first flap according to this embodiment becomes even more pronounced.

The length of the inner box in the sliding direction (hereinafter referred to as the width W of the inner box) may be greater than the thickness T of the inner box. The width W of the inner box may be at least twice, at least three times, or at least ten times the thickness T of the inner box. When the inner box has such an elongated shape, the effect of the first flap according to this embodiment becomes even more pronounced.

The specific size of the thickness T of the inner box is not particularly limited. If the thickness T of the inner box and the corresponding thickness of the outer box are, for example, 3 cm or less, it may be possible to use mail service provided by a courier company. The mail service provided by Japan Post is available when the thickness of the outer box is within 3 cm. Mail service is easy to use because the delivery fee is low and it may be possible to post the item in a mailbox.

(1-2-1) First flap The first side wall is provided with a first flap formed by folding a part of it toward the opposing second side wall. This first flap can prevent products stored in the inner box from falling over. When the first flap is formed, a window (first window) corresponding to the first flap is also formed in the first side wall. The product package, remaining amount, etc. can be checked through this first window.

Specifically, the first flap is formed by folding a portion of the ring formed on the first side wall, bounded by a first cut, toward the second side wall, around a first fold line that constitutes the remainder of the ring.

The number of first flaps may be one or more, and may be multiple. In particular, when the width W of the inner box is large, it is desirable for multiple first flaps to divide the width W of the inner box into multiple parts. The shapes and sizes of the multiple first flaps may be the same or different.

The angle between the first flap and the first side wall is not particularly limited. In order to easily prevent the product from falling over, the first flap and the first side wall may intersect at a right angle, and the acute angle between the first flap and the first side wall may be greater than or equal to 60 degrees and less than 90 degrees. The angle between the first flap and the first side wall is measured when viewing the inner box from the opening side.

The size of the first flap is not particularly limited. When the second flap described later is not at a corresponding position, the length of the first flap in the direction toward the second side wall (width T _F1 ) may be 50% or more, 80% or more, or 90% or more of the thickness T of the inner box. If the width T _F1 of the first flap is long, the crushing of the inner box is easily suppressed. The width T _F1 of the first flap is the shortest distance from the first side wall to the part of the first flap closest to the second side wall when the inner box is viewed from the opening side.

When the first flap and the second flap are in corresponding positions, the width T _F1 of the first flap may be set, for example, so that the sum of the width T F1 and the length of the second flap in the direction toward the first side wall (width T _F2 ) is 50% or more, or 80% or more, or even 90% or more of the thickness T of the inner box.

The distance from the bottom to the first flap (hereinafter referred to as the distance H _Fa to the lower end of the first flap) may be 1/3 or more of the height H ₂₀ of the inner box. As a result, the height from the bottom of the first window is also 1/3 or more of the height H ₂₀ of the inner box, which makes it easier to prevent the product from jumping out of the first window. On the other hand, the distance H _Fa to the lower end of the first flap may be 1/2 or less of the height H ₂₀ of the inner box, in order to make it easier to prevent the product from passing through the first flap and falling over. The height H ₂₀ of the inner box is the shortest distance from the bottom of the first side wall to the opening. The distance H _Fa to the lower end of the first flap is the shortest distance from the bottom to the part closest to the bottom of the first flap. The size and arrangement of the first flap may be determined by measuring the size and arrangement of the first window.

The distance from the opening to the part of the first flap closest to the opening (hereinafter referred to as the distance H _Fb to the top end of the first flap) is not particularly limited. The distance H _Fb to the top end of the first flap may be 1/3 or less of the height H ₂₀ of the inner box, since this makes it easier to prevent the product from falling over the first flap. The length L _F of the first flap, i.e., the length from the part of the first flap closest to the bottom to the part furthest from the bottom, may be determined taking into account the distances H _Fa and H _Fb .

A window (third window) may be provided on the third and fourth side walls that face the sliding direction and correspond to the open portion of the outer box. This allows the product and remaining amount to be checked without pulling out the inner box. In particular, it is desirable to place the third window in a position where the expiration date and other information written on the product can be seen.

Fig. 2A is a perspective view showing an example of an inner box according to the present embodiment, and Fig. 2B is a cross-sectional view of the inner box shown in Fig. 2A taken along line XX.
The inner box 20A includes a bottom 21, a first side wall 22, a second side wall 23, a third side wall 24 that shares one side with each of the bottom 21, the first side wall 22, and the second side wall 23, and a fourth side wall 25 that faces the third side wall 24. The bottom 21 is a rectangle that is long in the sliding direction A of the inner box. The inner box 20A has an opening that corresponds to the first surface of the outer box, and is housed in the outer box with the opening facing upward. The third side wall 24 and the fourth side wall 25 face the sliding direction A.

The first side wall 22 and the second side wall 23 are larger than the third side wall 24 and the fourth side wall 25. That is, the inner box is thin and vertical. Two semicircular cutouts 26 are provided on the opening sides of the first side wall 22 and the second side wall 23. The cutouts 26 of the first side wall 22 and the second side wall 23 are arranged to face each other. The third side wall 24 corresponds to the opening part of the outer box and has a third window 24W.

The height _H20 of the inner box 20A is approximately the same as the height _H10 of the outer box 10 shown in Fig. 1A, and is 95% or more and less than 100% of _H10 . The height _H20 of the inner box is approximately three times the thickness T of the inner box. The width W of the inner box is approximately 3.4 times the thickness T of the inner box.

The first side wall 22 has a first slit 209 that forms part of the ring, and a fold line 210 that forms the remainder of the ring. The area of the first side wall 22 defined by the first slit 209 is folded toward the opposing second side wall 23. This forms one first flap 221, and a first window 22W corresponding to the first flap 221 is formed in the first side wall 22. The first flap 221 can rotate around the left side as viewed from the first side wall 22. However, in FIG. 2A and FIG. 2B, the angle θ between the first flap 221 and the first side wall 22 is approximately 80 degrees.

The width T _F1 of the first flap 221 in the direction toward the second side wall 23 is about 95% of the thickness T of the inner box. The distance H _Fa to the bottom end of the first flap 221 is about 30% of the height H ₂₀ of the inner box. The distance H _Fb to the top end of the first flap is about 25% of the height H ₂₀ of the inner box.

FIG. 3 is a perspective view showing an example of a packaging container according to the present embodiment.
The packaging container 1000A in Fig. 3 includes an outer box 10B shown in Fig. 1B and an inner box 20A shown in Fig. 2A and Fig. 2B. A product (not shown) is stored upright in the inner box 20, and a user moves the inner box 20A in the sliding direction A to pull it out of the outer box 10B, and grabs and removes the product from the opening of the inner box 20A. Alternatively, a user moves the inner box 20A in the sliding direction A to pull it out of the outer box 10B, and stores the product in the inner box 20A through the opening of the inner box 20A.

The first flap may further have an additional fold line. The additional fold line extends, for example, in a direction along the first fold line. By folding the first flap at the additional fold line, the first flap is formed with a first portion extending in a direction toward the second side wall and in a direction intersecting with the first side wall, and a second portion in a direction along the first side wall or in a direction intersecting with the first side wall. This increases the strength of the first flap and makes it less likely to collapse. If a second window, which will be described later, is formed, the first flap is more likely to be prevented from popping out of the second window. In this case, the portion of the first flap closest to the second side wall may be the first portion or the second portion.

The additional fold line extends in a direction along the first fold line means that the acute angle between the first fold line and the additional fold line is less than 30 degrees when the first flap is viewed from the first side wall side. The first portion of the first flap is in a direction intersecting with the first side wall means that the first portion intersects with the first side wall at a right angle, or the acute angle between the first portion and the first side wall is 30 degrees or more and less than 90 degrees. The second portion of the first flap is in a direction along the first side wall means that the acute angle between the second portion and the first side wall is less than 30 degrees when the inner box is viewed from the opening side. The second portion of the first flap is in a direction intersecting with the first side wall means that the second portion intersects with the first side wall at a right angle, or the acute angle between the second portion and the first side wall is 30 degrees or more and less than 90 degrees.

The external shape of the first flap is not particularly limited, and may be rectangular or polygonal. The first flap may also be divided into two or more parts.

Figures 4A to 4C are perspective views showing examples of a first flap according to this embodiment. In Figures 4A to 4C, the first flap is viewed from inside the inner box. For convenience, the first flap is hatched.

The first flap 221A in FIG. 4A has a generally rectangular shape with rounded corners. The first flap 221B in FIG. 4B has a polygonal shape that tapers toward the second side wall. The first flap 221C in FIG. 4C is divided into two. One first flap 2211 and the other first flap 2212 are folded in opposite directions.

(1-2-2) Second flap A second flap may be formed on the second side wall together with the first flap. The second flap is formed by folding a part of the second side wall toward the first side wall, similar to the first flap. When the second flap is formed, a window (second window) corresponding to the second flap is formed on the second side wall.

Specifically, the second flap is formed by folding a portion of the ring formed on the second side wall, bounded by a second cut, toward the first side wall, around a second fold line that constitutes the remainder of the ring.

The number of second flaps may be one or more, and may be multiple. The shapes and sizes of the multiple second flaps may be the same or different. The size, arrangement, etc. of the second flaps may be similar to that of the first flaps. The shapes and sizes of the first flap and the second flap formed in one inner box may be the same or different.

At least a portion of the second flap may be in contact with the first flap. This increases the strength of the first flap as a partition. It is preferable that 50% or more of the area of one main surface of the second flap is in contact with the first flap.

FIG. 5 is a perspective view showing another example of the packaging container according to the present embodiment.
The packaging container 1000B in Fig. 5 includes the outer box 10B and the inner box 20B shown in Fig. 1B. The inner box 20B includes a first flap 221 and a second flap 231 in contact with the first flap 221. Other than this, the inner box 20B has the same configuration as the inner box 20A shown in Figs. 2A and 2B. The second flap 231 is formed by folding a part of the second side wall 23 toward the first side wall 22. The second flap 231 is formed at a position where it contacts the first flap 221. The size and other arrangement of the second flap 231 are similar to those of the first flap 221 shown in Figs. 2A and 2B.

The contact surface of the second flap with the first flap (hereinafter simply referred to as the contact surface of the second flap) is not particularly limited. The contact surface of the second flap may be a surface corresponding to the inner surface of the second side wall (hereinafter referred to as the inner surface of the second flap), or may be a surface corresponding to the outer surface of the second side wall (hereinafter referred to as the outer surface of the second flap). In order to prevent the second flap from collapsing, it is preferable that the contact surface of the second flap is the outer surface of the second flap. This is because the second flap formed by folding a part of the second side wall tries to return to its original shape so as to close the second window formed in the second side wall. By supporting the outer surface of the second flap with the first flap, the second flap is prevented from collapsing.

From a similar perspective, it is preferable that the contact surface of the first flap with the second flap (hereinafter simply referred to as the contact surface of the first flap) is a surface that corresponds to the outer surface of the first side wall (hereinafter referred to as the outer surface of the first flap).

It is further preferred that the contact surface of the second flap is the outer surface of the second flap, and that the contact surface of the first flap is the outer surface of the first flap. This makes it easier to prevent both the first flap and the second flap from collapsing.

6A to 6C are cross-sectional views showing examples of the main parts of the inner box according to this embodiment.
6A , the contact surface of the second flap 231 with the first flap 221 is a surface (inner surface 23Y of the second flap) corresponding to the inner surface of the second side wall 23. Similarly, the contact surface of the first flap 221 with the second flap 231 is a surface (inner surface 22Y of the first flap) corresponding to the inner surface of the first side wall 22.

In FIG. 6B, the contact surface of the second flap 231 with the first flap 221 is the surface corresponding to the outer surface of the second side wall 23 (the outer surface 23X of the second flap). In this case, the second flap 231 is prevented from returning to its original position to block the second window 23W, which makes it easier to improve performance as a partition. On the other hand, the contact surface of the first flap 221 with the second flap 231 is the surface corresponding to the inner surface of the first side wall 22 (the inner surface 22Y of the first flap).

In FIG. 6C, the contact surface of the second flap 231 with the first flap 221 is the surface corresponding to the outer surface of the second side wall 23 (the outer surface 23X of the second flap). Furthermore, the contact surface of the first flap 221 with the second flap 231 is also the surface corresponding to the outer surface of the first side wall 22 (the outer surface 22X of the first flap). In this case, the first flap 221 and the second flap 231 are prevented from collapsing, and the performance of both flaps as partitions is further improved.

When the contact surfaces of the first flap and the second flap are in the relationship shown in FIG. 6C, it is desirable that at least one of the flaps has a shape as shown in FIG. 4B. After the first flap and the second flap are raised, the positions of both flaps may have to be swapped in order to bring the contact surfaces into the above-mentioned relationship. The flap shown in FIG. 4B makes it easy to swap the positions of the flaps.

The second flap may further have an additional fold line, similar to the first flap. The additional fold line extends, for example, in a direction along the second fold line. By folding the second flap at the additional fold line, the second flap is formed with a first portion that extends in a direction toward the first side wall and in a direction intersecting with the second side wall, and a second portion that extends in a direction along the second side wall or in a direction intersecting with the second side wall.

The additional fold line extends in a direction along the second fold line means that the acute angle between the second fold line and the additional fold line is less than 30 degrees when the second flap is viewed from the second side wall side. The first part of the second flap is in a direction intersecting with the second side wall means that the first part intersects with the second side wall at a right angle, or the acute angle between the first part and the second side wall is 30 degrees or more and less than 90 degrees. The second part of the second flap is in a direction along the second side wall means that the acute angle between the second part and the second side wall is less than 30 degrees when the inner box is viewed from the opening side. The second part of the second flap is in a direction intersecting with the second side wall means that the second part intersects with the second side wall at a right angle, or the acute angle between the second part and the second side wall is 30 degrees or more and less than 90 degrees.

7A to 7C are cross-sectional views showing examples of the main parts of the inner box according to this embodiment.
In FIG. 7A, the first flap 221 has an additional fold line 211, and the first flap 221 has a first portion 221a in a direction intersecting the first side wall 22 and a second portion 221b in a direction along the first side wall 22. The second flap 231 also has an additional fold line 211, and the second flap 231 has a first portion 231a in a direction intersecting the second side wall 23 and a second portion 231b in a direction along the second side wall 23. This makes it difficult for both the first flap and the second flap to collapse. The first portion 221a of the first flap 221 and the first portion 231a of the second flap 231 are arranged so that the inner surface 22Y and the inner surface 23Y face each other. The second portions of the first flap 221 and the second flap 231 extend in opposite directions.

The inner box in FIG. 7B has the same configuration as the inner box in FIG. 7A, except that the second portions of the first flap 221 and the second flap 231 each extend toward the first portion of the other flap near the center in the thickness direction of the inner box, and that a slit (not shown) is formed in the first portion of each flap. The first portion 221a of the first flap 221 and the first portion 231a of the second flap 231 are arranged so that the inner surface 22Y and the inner surface 23Y face each other. However, the second portion of one flap is inserted into the slit formed in the first portion of the other flap, thereby preventing each flap from collapsing. In this case, it is desirable that the outer shape of each flap becomes thinner as it approaches the first portion of the other flap, as shown in FIG. 4B.

The inner box in FIG. 7C has the same configuration as the inner box in FIG. 7A, except that the second flap 231 does not have an additional fold line, the second portion 221b of the first flap extends toward the second flap 231, and a slit (not shown) is formed in the second flap 231. The first portion 221a of the first flap 221 and the first portion 231a of the second flap 231 are arranged such that the inner surface 22Y and the inner surface 23Y face each other. However, even in this case, the second portion 221b of the first flap is inserted into the slit formed in the second flap 231, thereby preventing each flap from collapsing.

Modifications of the packaging container according to this embodiment will be further shown.
8 and 9 are perspective views showing still another example of the packaging container according to the present embodiment.

The packaging container 1000C in FIG. 8 includes an outer box 10C and an inner box 20C.
The height _H20 of the inner box 20C is about 10 times the thickness T of the inner box 20C. The width W of the inner box is about 14 times the thickness T of the inner box. The inner box 20 is a very thin vertical type. The inner box 20C is accommodated in the outer box 10C without any gaps. Two first flaps 221 are formed on the first side wall 22. The two first flaps 221 are arranged so as to divide the width W of the inner box 20C into three. The two first flaps 221 have the same shape and size.

Each first flap 221 can rotate around the right side facing the first side wall 22. However, in Fig. 8, the angle θ between the first flap 221 and the first side wall 22 is about 90 degrees. The length T _F1 of the first flap 221 in the direction toward the second side wall 23 is about 95% of the thickness T of the inner box. The distance H _Fa to the bottom end of the first flap 221 is about 34% of the height H ₂₀ of the inner box. The distance H _Fb to the top end of the first flap is about 30% of the height H ₂₀ of the inner box.

Other than the above, the inner box 20C has the same configuration as the inner box 20A shown in Figures 2A and 2B. The first flap 221 may have the shape shown in Figures 4A to 4C, or the shape shown in Figures 7A to 7C. One or more second flaps may be formed on the second side wall 23 of the inner box 20A. The first flap 221 and the second flap may be in the positional relationship shown in Figures 6A to 6C.

The outer box 10C has a configuration similar to that of the outer box 10B shown in FIG. 1B, except that the outer box 10C has an outer shape that can accommodate the inner box 20C without any gaps.

The packaging container 1000D in FIG. 9 includes an outer box 10D and an inner box 20D.
The inner box 20D has a similar configuration and external shape to the inner box 20C shown in FIG.
The outer box 10D has the same external shape as the outer box 10C shown in Fig. 8, but is open in both directions in the sliding direction A of the inner box 20D. Therefore, the inner box 20D can be taken in and out from either the left or right direction in Fig. 9. In addition, a semicircular notch 16 is provided at each of the open sides of the third surface 13 and the fourth surface 14 of the outer box 10D.

The first flap 221 may have the shape shown in FIGS. 4A to 4C, or may have the shape shown in FIGS. 7A to 7C. One or more second flaps may be formed on the second side wall 23 of the inner box 20A. The first flap 221 and the second flap may have the positional relationship shown in FIGS. 6A to 6C.

(2) Blank Set This embodiment includes two blanks (blank set) used to produce the above-mentioned packaging container. The blanks are obtained by punching a material sheet printed with a desired design into the outer shape of the packaging container. The desired packaging container is obtained by assembling each blank.

The blank set according to this embodiment includes a blank for an outer box that is rectangular and can be assembled into a cylindrical shape, and a blank for an inner box that is slidably received in the outer box and can be assembled into a rectangular parallelepiped shape with an opening.

(2-1) Outer Box Blank The outer box obtained by assembling the outer box blanks has, as described above, a first surface which is a top surface, a second surface opposite to the first surface, a third surface which shares one side with each of the first surface and the second surface, and a fourth surface opposite to the third surface. The outer box is open on at least one side in the sliding direction of the inner box.

In the outer box blank, the first surface, the third surface, the second surface, and the fourth surface are arranged in the intersecting direction in this order. Therefore, the outer shape of the outer box blank is approximately rectangular, and the outer box blank can be efficiently punched out from a single sheet of material.

The blank for the outer box may have a glue tab. For example, the glue tab is disposed along at least a part of the edge along the sliding direction of one of the faces (the first face or the fourth face) that is the outermost in the cross direction. By bonding the first face and the fourth face via the glue tab, the blank for the outer box can be easily formed into a cylindrical shape.

The glue tab and the first or fourth surface are separated, for example, by a fold line extending along the sliding direction. Similarly, fold lines extending along the sliding direction are formed at the boundary between the first and third surfaces, the boundary between the third and second surfaces, and the boundary between the second and fourth surfaces. By folding along each of these fold lines, the outer box blank can easily become a rectangular tube. The fold lines may be formed, for example, by pressing (score processing) or may be perforations (same below).

The outer box blank may be provided to an assembler with the first and fourth sides bonded together via a glue tab and folded along the fold lines at the boundary between the first and third sides and the boundary between the second and fourth sides. In this case, the assembler can assemble the outer box by simply folding the outer box blank along the remaining fold lines.

FIG. 10A is a top view showing an example of an outer box blank according to the present embodiment.
In the outer box blank 100, the first surface 11, the third surface 13, the second surface 12, and the fourth surface 14 are arranged side by side in this order in the transverse direction B. The outer box blank 100 has an adhesive tab 105 that is arranged along the edge of the first surface 11 that is outermost in the transverse direction B, along the sliding direction A. Fold lines 101 to 104 are formed by pressing between the adhesive tab 105 and the first surface 11, the third surface 13, the second surface 12, and the fourth surface 14.

FIG. 10B is a top view showing the outer box blank shown in FIG. 10A folded into a cylindrical shape.
10B is cylindrical, with first surface 11 and fourth surface 14 bonded together via glue tab 105. However, since it is folded along fold lines 102 and 104, it can be stored, shipped, etc., in a sheet form.

(2-2) Inner Box Blank The inner box obtained by assembling the inner box blanks includes, as described above, a bottom corresponding to the second surface of the outer box, a first side wall corresponding to the third surface of the outer box, a second side wall corresponding to the fourth surface of the outer box, a third side wall sharing one side with each of the bottom, the first side wall, and the second side wall, and a fourth side wall opposing the third side wall. The inner box has an opening corresponding to the first surface of the outer box.

In the inner box blank, the first side wall, the third side wall, the second side wall, and the fourth side wall are arranged in this order along the sliding direction. Meanwhile, the bottom is arranged adjacent to the first side wall or the second side wall on the cross direction side. Therefore, the outer shape of the inner box blank is approximately rectangular, and the inner box blank can be efficiently punched out from a single sheet of material.

A first cut that forms part of the ring is formed in the first side wall of the inner box blank. The first cut is for forming the first flap, and the shape of the ring corresponds to the outer shape of the first flap. The remaining part of the ring is formed by the first fold line, and when the part of the first side wall inside the ring is folded so as to rotate along the first fold line, the area defined by the first cut rises from the first side wall, forming the first flap. The first cut and the first fold line can be formed, for example, at the same time as punching the material sheet, simplifying the manufacturing process. Furthermore, the first flap can be formed by simply folding the area defined by the first cut formed in the inner box blank when assembling the packaging container. This reduces the number of parts and makes the assembly process very simple.

Additional fold lines may be formed in the area defined by the first cut in a direction parallel to the first fold line. The above cuts, fold lines and additional fold lines may also be formed in the second side wall.

The inner box blank may have a glue tab. The glue tab is arranged, for example, along at least a part of the edge along the intersecting direction of one of the faces (the first side wall or the fourth side wall) that is the outermost in the sliding direction. By bonding the first side wall and the fourth side wall via the glue tab, the inner box blank can easily be made into a cylindrical shape.

The glue tab and the first side wall or the fourth side wall are separated, for example, by a fold line extending along the intersecting direction. Similarly, fold lines extending along the intersecting direction are also formed at the boundary between the first side wall and the third side wall, the boundary between the third side wall and the second side wall, and the boundary between the second side wall and the fourth side wall. By folding along each of these fold lines, the inner box blank can easily become a rectangular tube with a bottom.

The inner box blank may further include an insert piece. The insert piece is, for example, arranged along at least a portion of the edge along the sliding direction of the bottom. A fold line is also formed at the boundary between the insert piece and the bottom. After the inner box blank is formed into a rectangular tube with a bottom as described above, the insert piece is inserted between the bottom and the side wall, making it easier to maintain the shape of the inner box.

The inner box blank may be provided to an assembler in a state in which the first side wall and the fourth side wall are bonded together via a glue tab and folded along the fold lines at the boundary between the first side wall and the third side wall and the boundary between the second side wall and the fourth side wall. In this case, the assembler can assemble the inner box with flaps simply by folding the inner box blank along the first fold line and/or the second fold line and the remaining fold lines.

FIG. 11A is a top view showing an example of an inner box blank according to the present embodiment.
In the inner box blank 200, the first side wall 22, the third side wall 24, the second side wall 23, and the fourth side wall 25 are arranged in this order in the transverse direction B. The bottom 21 is arranged adjacent to the first side wall 22 on the side of the transverse direction B. The inner box blank 200 includes an adhesive tab 207 arranged along an edge along the transverse direction B of the fourth side wall 25 that is the outermost in the sliding direction A. The inner box blank 200 further includes an insertion piece 208 arranged along at least a portion of the edge of the bottom 21 along the sliding direction A.

The first side wall 22 and the second side wall 23 each have two rings formed therein, each of which is made up of a first cut 209 and a first fold line 210, to form a flap. The first fold line 210 is a perforation.

Fold lines 201-204 are formed by pressing between the adhesive margin 207 and the first side wall 22, the third side wall 24, the second side wall 23, and the fourth side wall 25. Fold lines 205 and 206 are also formed by pressing between the first side wall 22, the bottom 21, and the insertion piece 208.

FIG. 11B is a top view showing the inner box blank shown in FIG. 11A folded into a cylindrical shape.
11B is cylindrical, with first side wall 22 and fourth side wall 25 bonded together via glue tab 207. However, since it is folded at fold lines 201 and 203, it can be stored, shipped, etc., in a sheet form.

According to the present invention, products stored in the inner box are less likely to tip over. Therefore, the packaging container according to the present invention is suitable for storing elongated or thin products upright.

1000A to 1000D: Packaging container 10, 10A to 10D: Outer box 11: First surface (top surface)
12: Second surface 13: Third surface 14: Fourth surface 15: Fifth surface 16: Notch 20, 20A to 20D: Inner box 21: Bottom 22: First side wall 22X: Outer surface 22Y: Inner surface 22W: First window 221, 221A to 221C, 2211, 2212: First flap 221a: First portion 221b: Second portion 23: Second side wall 23X: Outer surface 23Y: Inner surface 23W: Second window 231: Second flap 231a: First portion 231b: Second portion 24: Third side wall 24W: Third window 25: Fourth side wall 26: Notch 100: Outer box blank 101 to 104: Fold lines 105: glue tab 200: inner box blank 201-206: fold lines 207: glue tab 208: insert piece 209: first cut 210: first fold line 211: additional fold line

Claims (11)

A packaging container in which a plurality of stick-shaped products are stored upright,
A rectangular, cylindrical outer box,
An inner box slidably received in the outer box,
the outer box includes a first surface that is a top surface, a second surface opposite to the first surface, a third surface that shares one side with each of the first surface and the second surface, and a fourth surface opposite to the third surface, and is open on at least one side in a sliding direction of the inner box,
the inner box includes a bottom portion corresponding to the second surface, a first side wall corresponding to the third surface, a second side wall corresponding to the fourth surface, a third side wall sharing one side with each of the bottom portion, the first side wall, and the second side wall, and a fourth side wall opposite to the third side wall, and has an opening corresponding to the first surface;
The bottom of the inner box is rectangular;
a height from the bottom of the first side wall to the opening is greater than a length of a side of the bottom that intersects with the sliding direction;
The packaging container includes a first flap formed by folding a portion of the first side wall defined by a first cut that constitutes a part of the ring toward the second side wall around a first fold line that constitutes the remainder of the ring. The packaging container according to claim 1, wherein the second side wall includes a second flap formed by folding a portion of the second side wall, which is partitioned by a second cut that constitutes a part of the ring, toward the first side wall around a second fold line that constitutes the remainder of the ring. The packaging container according to claim 2, wherein at least a portion of the second flap is in contact with the first flap. The packaging container according to claim 3, wherein the contact surface of the second flap with the first flap corresponds to the outer surface of the second side wall. a contact surface of the second flap with the first flap corresponds to an outer surface of the second side wall;
The packaging container according to claim 3 or 4, wherein a contact surface of the first flap with the second flap corresponds to an outer surface of the first side wall. The packaging container according to any one of claims 1 to 5, wherein the first flap is further folded around an additional fold line that extends in a direction along the first fold line. The first flap has a first portion in a direction intersecting the first side wall and a second portion folded from the first portion around an additional fold line extending in a direction along the first fold line;
The second flap is provided with a slit,
The packaging container according to any one of claims 2 to 5 , wherein the second portion of the first flap is inserted into the slit of the second flap. The packaging container according to any one of claims 1 to 7 , wherein a height from the bottom to the first flap is equal to or greater than 1/3 of a height from the bottom of the first side wall to the opening. The packaging container according to any one of claims 1 to 8 , wherein the outer box is open in both directions of the sliding movement. The packaging container according to any one of claims 1 to 9 , wherein a height from the bottom of the first side wall to the opening is three or more times greater than a length of a side of the bottom that intersects with the sliding direction. A blank set for storing a plurality of stick-shaped products upright,
A blank for an outer box that is rectangular and can be assembled into a cylindrical shape;
A blank for an inner box that is slidably received in the outer box and can be assembled into a rectangular parallelepiped shape having an opening ;
the outer box includes a first surface that is a top surface, a second surface opposite to the first surface, a third surface that shares one side with each of the first surface and the second surface, and a fourth surface opposite to the third surface, and is open on at least one side in a sliding direction of the inner box,
the inner box includes a bottom portion corresponding to the second surface, a first side wall corresponding to the third surface, a second side wall corresponding to the fourth surface, a third side wall sharing one side with each of the bottom portion, the first side wall, and the second side wall, and a fourth side wall facing the third side wall, and is open to correspond to the first surface;
In the outer box blank, the first surface, the third surface, the second surface, and the fourth surface are arranged in this order in a direction intersecting the sliding direction,
In the inner box blank, the first side wall, the third side wall, the second side wall, and the fourth side wall are arranged in this order along the sliding direction, and the bottom is arranged adjacent to the first side wall or the second side wall in a direction intersecting the sliding direction,
The bottom of the inner box blank is rectangular;
a height from the bottom of the first side wall to the opening is greater than a length of a side of the bottom that intersects with the sliding direction;
a first side wall of the inner box blank having a first cut line that defines a portion of a ring and a fold line that defines a remainder of the ring.

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