JP7166914B2 - packaging box - Google Patents

Description

The present invention relates to packaging boxes.

Conventionally, there is known a wrap-around type packaging box that can be separated into a bottomed square tube-shaped storage part and a lidded square tube-shaped lid part that covers the opening of the storage part (for example, Patent Document 1).

In the packaging box of Patent Literature 1, the storage section includes a bottom plate, a pair of lower side plates standing from one side edge of the bottom plate facing each other, and a pair of lower portions connected from the lower side plates and having ends facing each other. It has an inner flap and a pair of lower outer flaps that stand up from the other opposite side edges of the bottom plate and are adhered to the outer surface of the lower inner flap, and the lid portion includes a top plate and the top plate. a pair of upper side plates hanging from one side edge of the top plate, a pair of upper inner flaps connected from the upper side plate and having tips facing each other, and a pair of upper inner flaps hanging from the other side edge of the top plate and outside the upper inner flap and a pair of upper outer flaps adhered to the surface.

Further, in the packaging box of Patent Document 1, the lower side plate is adhered to the inner surface of the upper side plate to form a box shape, and the lower side plate is intermittently attached around the adhered area. A cut line surrounded by cuts is provided. For this reason, in the packaging box of Patent Document 1, a finger is inserted from below between the upper side plate and the lower side plate, and a part of the lower side plate is broken along the cut line. Can be separated and removed.

JP 2018-27792 A

However, in the packaging box of Patent Document 1, since intermittent cuts are provided in the lower side plate, when the packaging boxes are stacked, the lower side plate of the lower packaging box bends along the cut and bulges. It has the disadvantage of being easy to

SUMMARY OF THE INVENTION In view of the above points, an object of the present invention is to provide a packaging box in which the lid can be separated and removed from the storage with a single action, and the bulging can be suppressed.

In order to achieve such an object, the packaging box of the present invention is a packaging box comprising a bottomed square tubular storage part and a lidded square tubular lid covering the upper opening of the storage part, , the storage portion includes a bottom plate, a pair of lower side plates standing from opposite one side edges of the bottom plate, a pair of lower inner flaps connected from the lower side plate and having ends facing each other, and the bottom plate. It has a pair of lower outer flaps standing from the other opposite side edge, and the lid portion includes a top plate, a pair of upper side plates hanging down from one side edge of the top plate, and continuous from the upper side plate. and has a pair of upper inner flaps whose tips are opposed to each other and a pair of upper outer flaps hanging from the other side edge of the top plate, and the upper inner flap includes an inner surface of the upper inner flap The lower inner flap is joined at a height below the tip of the upper outer flap, and the upper outer flap and the lower outer flap are joined to the outer surface of the upper inner flap with their tips facing each other. The top plate and the upper outer flap are provided with a first breakable line passing through the top plate and connecting the tips of both upper outer flaps, and the upper inner flap is provided with the tip of the upper inner flap A second breakable line is provided that extends toward the lower end of the upper outer flap, and the first breakable line extends through the gap between the regions of the upper outer flap where the pair of upper inner flaps are adhered. , the second breakable line is outside both regions where the upper inner flap is joined to the lower inner flap and the lower outer flap and passes through the opposite side of the lower corner on the tip side of the upper inner flap. It is characterized by being extended to.

Since the top plate and the upper outer flap of the packaging box of the present invention are provided with the first breakable line, a part of the first breakable line formed on the top plate is broken, and the fingers of both hands are hooked. By pulling in the direction of the side plate, the top plate and the upper outer flap can be torn along the first breakable line.

Since this first breakable line extends through the gap between the regions where the pair of upper inner flaps of the upper outer flaps are joined, the upper inner flaps joined to the torn upper outer flaps The flaps are pulled toward the side plates. However, since the pair of upper inner flaps are fixed by being joined by the lower outer flaps, a load is generated on the tip side. As a result, the upper inner flap is broken along the second expected breaking line extending from the tip.

This second planned break line is outside both regions where the upper inner flap is joined to the lower inner flap and the lower outer flap, and passes through the opposite side of the lower corner on the tip side of the upper inner flap to the tip of the upper inner flap. The upper inner flap is separated from the lower inner flap and the lower outer flap by breaking all the flaps. As a result, the lid portion is separated from the storage portion while being disassembled into two.

As described above, according to the packaging box of the present invention, the lid can be separated and removed from the storage in one action by tearing the top plate in the direction of the side plate. In addition, in the packaging box of the present invention, since it is not necessary to provide the breakable line on the upper side plate and the lower side plate, it is possible to suppress body bulging.

Further, in the packaging box of the present invention, the lower edge of the upper inner flap is in contact with the bottom plate, and the leading edge of the upper side plate has a curved portion recessed upward from the base edge of the lower side plate. It is preferable that a concave portion having a shape or a curved shape is formed.

According to the packaging box having this configuration, since the lower edge of the upper inner flap is in contact with the bottom plate, the strength of the box body can be improved. Since it does not come into contact with the floor and the packaging box below), it is possible to further suppress bulging.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the packaging box which concerns on one Embodiment of this invention. FIG. 2 is an exploded view of the packaging box of FIG. 1; FIG. 3 is a plan view of a state in which the paperboards of FIG. 2 are connected; FIG. 10 is an explanatory diagram showing the process of opening the packaging box, and is a perspective view showing the middle of breaking the first breakable line. FIG. 10 is an explanatory diagram showing the process of opening the packaging box, and is a perspective view showing the middle of breaking the second breakable line. FIG. 4 is an explanatory diagram showing the process of unsealing the packaging box, and is a perspective view showing a state in which the breaking is completed; FIG. 4 is a perspective view showing how packages are displayed on a tray formed by opening the packaging box. The development view of the packaging box which concerns on the modification of this invention.

A packaging box 1 according to one embodiment of the present invention is provided with a rectangular cylindrical body 2 and a pair of closing parts 3 closing both ends of the body 2, as shown in FIG. is a so-called wrap-around format. The packaging box 1 is formed with a first breakable line 4 extending vertically through the upper surface of the body portion 2 and reaching the center of the closed portion 3 . Further, the inner flap constituting the closing portion 3 is formed with a second breakable line 5 extending from the distal end (not shown) to the lower end along the proximal edge.

A finger insertion portion 6 is formed on the upper surface of the body portion 2, and a grip hole 7 is formed in each of the pair of closing portions 3. As shown in FIG.

The packaging box 1 is assembled from three pieces of stamped corrugated paperboard 10, 20 and 30 as shown in FIG.

First, the corrugated paperboard 10 including the top plate 11 will be described.

An upper outer flap 12 is connected to the upper and lower edges of the top plate 11 via a fold line a, and an upper side plate 13 is connected to the left end edge of the top plate 11 via a fold line b. Upper inner flaps 14 are connected to the upper and lower edges of the side plate 13 via fold lines c.

The first breakable line 4 consists of a top plate breakable line 41 formed on the top plate 11 and outer flap breakable lines 42 , 42 formed on the upper outer flap 12 .

The top plate breakable line 41 is formed in a substantially S-shape passing through the center of each of the upper and lower ends of the top plate 11 and the center portion of the top plate 11 . The top plate breakable line 41 is an intermittent cut, and when the breaking direction is defined as the tip direction, V-shaped auxiliary cuts are connected to the base end side of each linear unit cut, so that the whole It is formed by intermittently connecting approximately Y-shaped unit cuts.

At the center of the top plate 11 , a substantially I-shaped finger insertion cut 61 for forming the finger insertion part 6 is formed across the top plate breakable line 41 . The top plate 11 is formed with crease lines 62 for inserting a finger that connect the left and right ends of the upper and lower cuts of the cuts 61 in the vertical direction.

The top plate 11 is formed with auxiliary folding lines 43 radially extending from the finger insertion portion 6 toward the four corners of the top plate 11 .

The outer flap breakable line 42 extends vertically through the upper outer flap 12 through the center of the upper outer flap 12 in the left-right direction. The top plate breakable line 41 and the outer flap breakable line 42 are connected by a break across the fold line a.

The outer flap breakable line 42 is formed by intermittent straight cuts.

On the left side of the upper upper outer flap 12 and the right side of the lower upper outer flap 12, a grasping fold line 71 parallel to the fold line a and a grasping cut 72 connecting both ends of the grasping fold line 71 are formed. It is

A substantially L-shaped second breakable line 5 is formed on the upper inner flap 14 . The second breakable line 5 extends from the central left side of the tip of the upper inner flap 14 toward the proximal end, curves along the proximal end to the left corner (lower corner when box-shaped). deferred.

The second breakable line 5 is an intermittent cut, and when the breaking direction is defined as the distal direction, the linear auxiliary cut is inclined and connected to the base end side of each linear unit cut. As a whole, it is formed by intermittent unit cuts that are substantially in the shape of a letter "he".

On the back surface of the upper inner flap 14, a bonding area G1 is planned on the right side of the second rupturable line 5, and a position surrounded by the second rupturable line 5 on the left side of the second rupturable line 5 is planned as a bonding area G2. It is

The upper inner flap 14 on the upper side is formed with a gripping crease line 73 extending in a direction perpendicular to the crease line c and a gripping notch 74 connecting both ends of the gripping crease line 73 .

Next, the corrugated paperboard 20 including the bottom plate 21 will be described.

Lower outer flaps 22 are connected to the upper and lower edges of the bottom plate 21 via fold lines d, respectively, and lower side plates 23 are connected to the left and right edges of the bottom plate 21 via fold lines e. Lower inner flaps 24 are connected to the upper and lower edges of 23 via fold lines f.

On the back surface of the lower inner flap 24, a central portion is planned as an adhesion area G3.

Finally, the corrugated paperboard 30 including the top side plate 33 will be described.

An upper inner flap 34 is connected to the upper and lower edges of the upper side plate 33 via a fold line g, and an adhesive piece 35 is connected to the left edge of the upper side plate 33 via a fold line h. .

The upper inner flap 34 is formed with the second breakable line 5 similarly to the above-described upper inner flap 14, and adhesive areas G1 and G2 are planned on the back surface.

In addition, in the lower upper inner flap 34, similarly to the upper upper inner flap 14, a gripping crease line 73 extending in a direction perpendicular to the crease line g and a gripping cut connecting both ends of the gripping crease line 73 are provided. 74 are formed.

Next, the process of assembling the packaging box 1 will be described.

First, prior to assembling into a box shape, as shown in FIG. The tip edges are aligned along the folding lines e, e and adhered in the adhesion region G3.

At this time, although not shown in FIG. 3 because the corrugated paperboard 20 is stacked from above, the second breakable line 5 extends from the center of the tip edge of the upper inner flap 14 to the left end of the base edge, the adhesion region G2 and the It is extended to include the entire G3. In other words, the second breakable line 5 extends from the upper end of the upper inner flap 14 to the lower left corner through the opposite side of the left corner on the tip side of the upper inner flap 14 in the peripheries of the adhesive regions G2 and G3. deferred.

Next, the superimposed lower side plate 23 and upper side plate 33 are vertically raised from the bottom plate 21 along the fold line e. up vertically. Then, the adhesive piece 35 is folded horizontally along the folding line h, and the top plate 11 is folded horizontally along the folding line b and superimposed on the outer surface of the adhesive piece 35 and adhered. As a result, the trunk portion 2 having a square tubular shape is formed.

Next, the adhered lower inner flap 24 and upper inner flap 14 are folded inward along fold lines f and c, and similarly the adhered lower inner flap 24 and upper inner flap 34 are folded along fold lines f and g. Fold inward along the edge. Then, the lower outer flap 22 is vertically raised along the crease line d, superimposed on the outer surfaces of the lower inner flaps 24, 24, and adhered in the adhesion region G2.

Furthermore, the packaging box 1 is assembled by vertically hanging the upper outer flap 12 along the folding line a, superimposing it on the outer surfaces of the upper inner flaps 14 and 34, and adhering them in the adhesion region G1.

Next, the process of opening the packaging box 1 and displaying the packages will be described.

First, as shown in FIG. 4 , the finger insertion part 6 is formed by inserting the finger into the top plate 11 and folding the folding line 62 for finger insertion into a mountain.

Next, while the finger is inserted into the finger insertion portion 6, the top plate 11 is grasped and the right hand is pulled to the right and the left hand is pulled to the left. As a result, as shown in FIG. 4 , the top plate breakable line 41 is broken from both ends of the finger insertion portion 6 toward the proximal edge of the upper outer flap 12 .

When all the top plate breakable lines 41 are broken and further pulled, the upper outer flap 12 connected to the top plate 11 is also pulled, as shown in FIG. The breakable line 42 is also broken.

When pulled further, the upper inner flaps 14, 34, which are respectively glued to the upper outer flap 12 at the glue region G1, will also be pulled, but the upper inner flaps 14, 34 are attached to the lower outer flap 22 and the lower inner flap 24 below. , 24 are glued and fixed. Therefore, a shearing force is generated in the upper inner flaps 14, 34, and the upper inner flaps 14, 34 are broken along the second breakable line 5 from the tips thereof toward the left corners.

Finally, as shown in FIG. 6, when all the second breakable lines 5 are broken, the top plate 11, the upper side plates 13 and 33, the upper half of both upper inner flaps 14 and 34, and both upper outer flaps 12 is divided into two members.

At this time, the upper side plates 13, 33 of the two members are connected to the upper inner flaps 14, 34 connected to the upper side plates 13, 33 and the lower inner flaps 24, 24 connected to the lower side plates 23, 23. And since the lower outer flaps 22 are only in contact with the lower side plates 23 and 23 by bonding them at the bonding regions G3 and G2, the second breakable line 5 is broken and the upper inner flaps 14 and 34 and the lower When the inner flaps 24,24 and the lower outer flap 22 are separated, each upper side plate 13,33 is separated from the lower side plate 23,23.

As a result, the packaging box 1 can remove the lid portion 8, and as shown in FIG. A shaped storage space 9 is left, and the storage space 9 allows the package to be displayed.

To summarize the above description, in the packaging box 1 of the present embodiment, the bottom plate 21, the lower side plate 23, the lower inner flaps 24, 24, and the lower outer flap 22 form a bottomed rectangular cylindrical storage portion 9. is formed, and for this storage part 9, a lidded rectangular cylindrical lid part formed by a top plate 11, upper side plates 13, 33, both upper inner flaps 14, 34, and both upper outer flaps 12 8 are externally fitted, and the lower halves of the upper inner flaps 14, 34 are sandwiched between the lower inner flaps 24, 24 and the lower outer flap 22 and adhered to each other.

Therefore, the lower half of the upper inner flaps 14 and 34, which are the connecting portions between the storage portion 9 and the lid portion 8, are left on the storage portion 9 side from the lid portion 8 and separated along the second breakable line 5, and the lid portion can be separated. 8 and the storage part 9 can be divided. In particular, this second breakable line 5 is broken by pulling in the same direction as the pulling direction for breaking the first breakable line 4 formed on the top plate 11 and the upper outer flap 12, In the packaging box 1 of the present embodiment, the first breakable line 4 and the second breakable line 4 and the second breakable line 4 can be broken by a single action of inserting fingers into the top plate 11 from the finger insertion part 6 straddling the first breakable line and tearing left and right with both hands. The wires 5 can be broken sequentially to unpack.

Since the packaging box 1 according to the present embodiment described above does not have a breakable line in the upper side plates 13, 33 and the lower side plates 23, 23, it is possible to suppress body bulging.

Since the top plate breakable line 41 of the present embodiment is formed in a substantially S shape, it is possible to prevent the top plate 11 from being bent along the breakable line when the packaging box 1 is assembled. can.

The top plate 11 of the present embodiment is formed with auxiliary folding lines 43 extending radially from the finger insertion portion 6 provided in the center of the top plate 11 toward the four corners of the top plate 11 . When the plate 11 is pulled to the left and right, the top plate 11 is deformed into a substantially quadrangular truncated pyramid shape. As a result, each top plate breakable line 41 is given a force that pulls the upper side to the left and right to split downward, so that the top plate can be easily broken.

As shown in FIG. 3, the packaging box 1 of this embodiment is made by stacking corrugated paperboards 10, 20, 30 with the corrugated paperboards 10, 30 on the lower side and the corrugated paperboard 20 on the upper side. As a result of aligning the tip edges along the folding lines e and gluing them in the gluing region G3, the blank has a shape similar to that of an ordinary wrap-around blank. Therefore, the packaging box 1 of this embodiment can be automatically sealed by a conventional wrap-around caser.

As shown in FIG. 8, in the packaging box 1 according to the modified example of the present embodiment, the upper side plates 13, 33 have concave portions 16, 36 that are recessed toward the base ends at the tip edges. The concave portions 16 and 36 are formed in a substantially U-shape in which both corners of the upper side plates 13 and 33 are connected and the tips are gradually spaced apart.

In the packaging box 1 of the modified example, since the tip edges of the upper side plates 13, 33 do not contact the bottom (the ground, the floor, and the lower packaging box) due to the concave portions 16, 36, the bulging can be further suppressed.

Modifications of the packaging box 1 of the present embodiment, which are not shown in the drawings, will be described below.

The top plate breakable line 41 of the present embodiment has been described as being formed in a substantially S shape passing through the center of the upper and lower ends of the top plate 11 and the center portion of the top plate 11 as an example, but the present invention Without being limited to this, the top plate breakable line 41 may be linear or may be curved.

In addition, in the top plate breakable line 41 of the present embodiment, an example of a perforation in which a substantially Y-shaped unit break is intermittent has been described, but the present invention is not limited to this, and the I-shaped, X-shaped, etc. It may be a belt-like zipper sandwiched between a pair of perforations.

In the present embodiment, an example in which the finger insertion portion 6 is formed to straddle the breakable line 41 of the top plate has been described, but the finger insertion portion 6 may be omitted. In addition, in the present embodiment, an example in which the auxiliary folding lines 43 extending radially are formed on the top plate 11 has been described, but the present invention is not limited to this, and the auxiliary folding lines such as M-shape or W-shape are described. , and the auxiliary folding lines may be omitted.

Although the outer flap breakable line 42 of the present embodiment is formed by a unit cut having a shape different from that of the top plate breakable line 41, the outer flap breakable line 42 is the top plate breakable line. It can also have the same shape as 41 (Y-shape in this embodiment).

The second breakable line 5 of the present embodiment extends from the central left side of the tip of the upper inner flap 14 toward the base end, and after being curved, extends in a substantially L shape to the left corner along the base end. However, the present invention is not limited to this, and a part of the second breakable line 5 may be cut in advance, for example, from the tip to the middle position in the height direction of the upper inner flap 14 A cut extending toward the proximal side may be formed, or a cut may be formed along the proximal edge of the upper inner flap 14 from the lower end to the intermediate portion.

In addition, in the second breakable line 5 of the present embodiment, an example of a perforation in which a substantially "F"-shaped unit cut is interrupted has been described, but the present invention is not limited to this, and the I-shaped, X-shaped Other perforations such as character-shaped perforations may be used, or a belt-like zipper sandwiched between a pair of perforations may be used.

Although the closed portion 3 of the present embodiment is formed of so-called short flaps in which the tips of the opposing inner flaps and the opposing outer flaps are spaced apart, the present invention is not limited to this, and the second breakage The possible line 5 extends from the tips of the upper inner flaps 14, 34 to the lower ends of the upper inner flaps 14, 34 after passing between the adhesion region with the upper outer flap 12 and the adhesion regions G3 and G2. The length of the flap does not matter as long as the lower half of the upper inner flap 14 sandwiched between the lower outer flap 22 and the lower inner flap 24 can be separated.

1 packaging box 11 top plate 12 upper outer flaps 13, 33 upper side plates 14, 34 upper inner flaps 16, 36 recess 21 bottom plate 22 lower outer flap 23 lower side plate 24 lower inner flap 4 first breakable line 5 second breakable line 8 lid portion 9 storage portions G1, G2, G3 adhesion area

Claims (2)

A packaging box comprising a bottomed square tube-shaped storage section and a lidded square tube-shaped lid section covering the upper opening of the storage section,
The storage portion includes a bottom plate, a pair of lower side plates standing from opposite side edges of the bottom plate, a pair of lower inner flaps connected from the lower side plate and having ends facing each other, and the bottom plate facing each other. a pair of lower outer flaps rising from the other side edge of the
The lid portion includes a top plate, a pair of upper side plates hanging down from one side edge of the top plate, a pair of upper inner flaps connected from the top side plate and having ends facing each other, and the other side of the top plate. a pair of upper outer flaps depending from the side edges;
The lower inner flap is joined to the upper inner flap at a height position equal to or lower than the tip of the upper outer flap on the inner surface of the upper inner flap, and the upper outer flap is attached to the outer surface of the upper inner flap. and the lower outer flap are joined with their tips facing each other,
The top plate and the upper outer flap are provided with a first breakable line that passes through the top plate and connects the tips of both upper outer flaps,
The upper inner flap is provided with a second breakable line extending from the tip of the upper inner flap toward the lower end,
The first breakable line extends through the gap between the regions of the upper outer flap where the pair of upper inner flaps are adhered,
The second breakable line is outside both regions where the upper inner flap is joined to the lower inner flap and the lower outer flap and passes through the opposite side of the lower corner on the tip side of the upper inner flap. A packaging box characterized by being extended. In the packaging box according to claim 1,
A lower edge of the upper inner flap is in contact with the bottom plate,
A packaging box, wherein a bent or curved recess that is recessed upward from the base edge of the lower side plate is formed at the tip of the upper side plate.

Images