JP5797493B2 - Multipack packaging box - Google Patents

Description

  The present invention includes, for example, alcohol beverage cans such as canned beer, sparkling liquor cans and Chu-hi cans; containers filled with beverages such as non-alcoholic beverage cans such as can juice, canned coffee, canned tea, and canned tea. The present invention relates to a multipack packaging box that is packaged in a state in which it is left.

  Conventionally, a plurality of containers such as canned beer and can juice are arranged in a row or in a plurality of rows in a standing state, and an upper surface (top surface), a side surface and a lower surface ( Paper multi-pack packaging boxes that can be wrapped so as to wrap the bottom surface) are used. Such a multi-pack packaging box generally includes an upper surface plate that covers the upper surface (top surface) of the container group, a side plate that is connected to each of opposite opposing ends of the upper surface plate, covers the side surface of the container group, and A bottom plate that is connected to the end portion and covers the lower surface (bottom surface) of the container group is provided, and at both end portions where the side plate does not exist, an opening that can visually recognize at least a part of the side surface of the container group is formed.

  By using such a multi-pack packaging box, a plurality of canned beers, canned juices, etc. can be collected in a single package and can be carried easily at once. Combined with the effect, the use of the multipack packaging box has been rapidly expanding in recent years.

  Such a multipack packaging box has a function of holding the container by being folded inside the multipack packaging box in order to prevent the contents (container) from popping out or falling off from the opening. A flap piece and an upper retaining piece (upper gusset) reaching the corner of the top plate are connected to the opening side end of the side plate, but a so-called lower gusset is not provided. (See Patent Document 1).

US Pat. No. 6,988,617

  In such a multi-pack packaging box, during transportation on the transportation path in the manufacturing process, the packaging boxes positioned on the front and back on the transportation path may come into contact with each other on the opening side, or the packaging box during transportation The opening side of the packaging box may come into contact with an object in the transport path due to misalignment or the like. The same phenomenon can occur in the delivery process after product shipment.

  In this case, in the multipack packaging box described in Patent Document 1 in which the lower gusset is not provided, the opening side end of the bottom plate and the opening side end of the side plate are exposed on the opening side. Therefore, the contact on the opening side may damage the bottom end of the bottom plate and the side plate and the fold line located at the connecting portion (boundary portion) between the bottom plate and the side plate. There is a problem that the packaging box is torn and the container falls off.

  Under such actual conditions, even if an impact is applied to the connecting portion between the bottom plate and the side plate, the present invention hardly damages the connecting portion and continues to hold the container (container group) firmly. An object of the present invention is to provide a multipack packaging box.

In order to solve the above-described problems, the present invention provides an upper surface plate that covers the upper surface of a container group in which a plurality of containers are arranged in parallel, and a container group that is connected to each of both side portions of the upper surface plate and arranged in parallel. A side plate disposed oppositely so as to cover the side surface of the plate, and a bottom plate connected to each of the side plates and having locking portions that can be engaged with each other, and by attaching the bottom plates to each other, In a multipack packaging box that is storable so as to wrap a container group, and has openings that can visually recognize a part of a side surface of the container group at both end portions where the side plate does not exist. It is located at the boundary portion in the vicinity of the opening with the bottom plate, has a connecting portion that connects the side plate and the bottom plate, and is located on the bottom plate side of the opening side edge of the side plate. The opening side edge to be used is the bottom plate Including an inclined side that inclines toward the opening side as it goes, and the inclined side and the opening side end side of the bottom plate are continuous via a connecting side that constitutes the opening side end side of the connecting part. The connecting portion includes a connecting point, a predetermined point located at a boundary portion between the side plate and the bottom plate in the vicinity of the opening, and a connecting portion between the inclined side and the connecting side. The multi-pack packaging box is configured as a region surrounded by a first fold line and a second fold line extending from the predetermined point to a continuous portion between the opening side edge of the bottom plate and the connecting side . When assembled, the connecting side is exposed to the opening side so as to constitute a part of the opening edge of the opening (Invention 1).

  In the said invention (invention 1), it is preferable that the opening side edge of the said baseplate is located in the said opening part side rather than the said connection side which continues to the opening part side edge of the said baseplate ( Invention 2).

  In the said invention (invention 1 and 2), the folding line is formed in parts other than the vicinity of the said opening part among the boundary parts of the said side surface board and the said bottom face board, The said connection side is the said folding line. Is preferably located so as to intersect with an imaginary line extending toward the opening (Invention 3).

  In the said invention (invention 1-3), the said connection side may have the bending part by which a corner | angular part is rounded (invention 4), and the curve which becomes convex toward the said opening part side. It may have a shape (Invention 5).

  In the said invention (invention 1-5), the continuous part of the said inclination side and the said connection side and / or the continuous part of the said baseplate board opening part side edge and the said connection side are toward the said opening part side. It preferably has a concave curved shape (Invention 6).

  In the said invention (invention 1-6), a fold line is formed in parts other than the vicinity of the said opening part among the boundary parts of the said side surface board and the said bottom face board, and it is a container so that the said fold line may be straddled It is preferable that a bottom fixing piece is formed (Invention 7).

  Moreover, this invention provides the multipack packaged product characterized by accommodating a container in the multipack packaging box which concerns on the said invention (invention 1-7) (invention 8).

  According to the present invention, even if an impact is applied to the connecting portion between the bottom plate and the side plate, the connecting portion is unlikely to be damaged and the container (container group) can be held firmly. A packaging box can be provided.

FIG. 1 is a developed view showing a multipack packaging box according to an embodiment of the present invention. FIG. 2 is a perspective view of the assembled box original paper shown in FIG. FIG. 3 is an enlarged view of a portion A shown in FIG. 1 and is a partially enlarged view mainly showing a holding flap mechanism portion and an upper opening hole (end opening hole) adjacent to the holding flap mechanism portion. FIG. 4 is an enlarged view of a portion B shown in FIG. 1 and is a partially enlarged view showing the vicinity of the connecting portion between the side plate and the bottom plate connected to the side plate. FIG. 5 is a partially enlarged plan view showing the vicinity of the connecting portion between the upper surface plate and the side surface plate connected to both ends of the upper surface plate. FIG. 6 is a partially enlarged cross-sectional view schematically showing a state in which the container bottom fixing piece is bent in two stages and inserted into the container bottom recess and fixed so that the container does not move. FIG. 7 is a partially enlarged plan view mainly showing the vicinity of the container bottom fixing piece.

  Hereinafter, a multipack packaging box according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, an example of a general multipack packaging box that can store six cans of beer (stores three serially arranged cans arranged in two rows in parallel) will be described. The multipack packaging box according to the present invention is not limited to this.

  FIG. 1 is a developed view showing a multipack packaging box 1 according to the present embodiment, and FIG. 2 is a perspective view assembled in a state where a can product is stored in the developed box original paper shown in FIG. 3 is an enlarged view of a portion A shown in FIG. 1, and is a partially enlarged view mainly showing a holding flap mechanism portion and an upper opening hole (end opening hole) adjacent thereto, and FIG. FIG. 5 is an enlarged view of a portion B shown in FIG. 1 and is a partially enlarged view showing the vicinity of a connecting portion between a side plate and a bottom plate connected to the side plate, and FIG. 5 is connected to the top plate and both ends of the top plate. FIG. 6 is a partially enlarged plan view showing the vicinity of the connecting portion with the side plate to be operated. FIG. 6 shows a state in which the container bottom fixing piece is folded in two stages and inserted into the container bottom recess and fixed so that the container does not move. It is a partial expanded sectional view which shows typically.

  The multipack packaging box 1 according to the present embodiment can be formed by assembling the unfolding sheet (packing sheet) shown in FIG. 1, and the unfolding sheet has a horizontally elongated substantially rectangular shape as shown in FIG. 1. I am doing.

  In describing the multipack packaging box 1 according to the present embodiment, for the sake of convenience, the short side direction of the spread sheet is referred to as the “width direction” and the long direction of the spread sheet is referred to as the “length direction”. (See arrow shown in FIG. 1).

  In the spread sheet shown in FIG. 1, the central portion thereof constitutes the upper surface plate 2, and the side plates 3 and 4 are connected to both end portions of the upper surface plate 2 via the folding line 2 a. And the bottom face plate 5 is connected via the fold lines 3a and 5a to the edge part which opposes the edge part (folding line 2a side) in which the upper surface board 2 is connected in the side surface board 3, and in the side surface board 4, A bottom plate 6 is connected via folding lines 3a and 5a to an end facing the end (folding line 2a side) where the top plate 2 is connected. The fold line 5a is formed at the boundary between the side plates 3 and 4 and the bottom plates 5 and 6 so that both ends thereof reach the end on the opening P side. It is formed at the boundary between the side plates 3 and 4 and the bottom plates 5 and 6 so as not to reach the end on the opening P side.

  In the present embodiment, the upper surface plate 2 is approximately the length of three beer cans in the width direction so as to cover the upper surface of six can beers in which three in series are arranged in two rows in a standing state. Has an area that is approximately the length of two beer cans. And the side plate 3 and the side plate 4 which correspond to the height are connected with the both ends of the upper surface board 2 via the fold line 2a which each makes the boundary so that the side part of canned beer may be covered.

  The bottom plates 5 and 6 are respectively formed with locking portions 7 (the bottom plate 5 side) and 8 (the bottom plate 6 side) that can be engaged with each other. The locking hole 7a of the locking portion 7 and the cut portion 8a of the locking portion 8 are paired, and the cutting hole 7b of the locking portion 7 and the locking piece portion 8b of the locking portion 8 are paired, The bottom plates 5 and 6 are engaged with each other.

  And the multi-pack packaging box 1 which can be accommodated so that the container group which consists of several can containers 100 may be assembled by engaging the bottom plates 5 and 6 via the latching | locking parts 7 and 8 (refer FIG. 2). ). As a result, an opening P that allows a part of the side surface of the container group to be visually recognized at both ends where the side plates 3 and 4 do not exist is formed.

  As shown in FIG. 1, the container accommodated in the inside protrudes or drops out from the opening P of the packaging box on the upper surface plate 2 side at both ends (opening P side) of the side plates 3 and 4. A holding flap mechanism 90 for holding the upper part of the container is formed.

  Further, four end openings corresponding to each of the four containers arranged on the opening P side in the vicinity of the connecting portion between the top plate 2 and the side plates 3 and 4 and close to the opening P. A hole 21 is formed, and two middle opening holes 22 corresponding to the two containers disposed substantially at the center are formed so as to be positioned between the end opening holes 21. A part of the edge portion of the end opening hole 21 and the middle opening hole 22 corresponding to the container comes into contact with the upper part of the container, whereby the upper part of the container to be stored is locked. In the present embodiment, due to the locking effect of both the end opening hole 21 and the middle opening hole 22 and the holding flap mechanism part 90, the holding force of the container engaged with them can be remarkably improved. Furthermore, since the dimensions of at least the width direction of the multipack packaging box 1 can be shortened by such specifications, the amount of paper raw material used can be reduced.

  The holding flap mechanism 90 includes a pressing flap piece 92 that is folded inside the opening P and has a function of holding the container, and a retaining band piece 91 that locks the upper portion of the container and performs a retaining action. .

  The pushing flap piece 92 is configured to be folded inside the multipack packaging box 1 via a mountain fold line 92a. Therefore, the mountain fold line 92a constitutes an end portion on the opening P side of the side plates 3 and 4 in the assembled multipack packaging box 1. The retaining strip 91 is configured such that a part thereof continues to the push-in flap piece 92 via the valley fold line 91a and a part thereof continues to the upper surface plate 2 via the valley fold line 91b. A part of the boundary between the retaining band piece 91 and the pushing flap piece 92 is separated. In this way, by separating a part of these boundaries, the operation of folding the push-in flap piece 92 into the inside of the multipack packaging box 1 and the valley folding of the retaining band piece 91 becomes possible.

  One end portion 91 ′ of the strip-like shape of the retaining strip piece 91 in this embodiment is formed by the opening shape of the end opening hole 21. Then, one end of the mountain fold line 92 a and one end of the valley fold line 91 a are each extended to reach the end opening hole 21.

  As shown in FIG. 3, the mountain fold line 92 a in the present embodiment is a line parallel to the length direction or a line inclined in the opening P side direction (outward direction) toward the top plate 2 (with respect to the length direction). The inclination angle θ is greater than 0 ° and 5 ° or less, preferably 1 to 3 °. The inclination angle θ of the mountain fold line 92a can be set as appropriate according to the body diameter of the container accommodated in the multipack packaging box 1 so that an optimum holding force can be obtained.

  Moreover, in this embodiment, as shown in FIG. 3, the opening form of the end opening hole 21 is a substantially inverted triangular shape with rounded vertices, and the lowest point is the opening P of the side plates 3 and 4. It is preferable to adopt a form shifted to the side (substantially inverted right triangle). As shown in FIG. 1, the opening shape of the middle opening hole 22 is preferably substantially bell-shaped (substantially bell-shaped) extending from the side plates 3 and 4 toward the top plate 2.

  As shown in FIG. 1, among the edges on the opening P side of the side plates 3, 4 in the present embodiment, the edge on the opening P side located on the bottom plate 5, 6 side is the pushing flap piece 92. Non-inclined sides 3A, 4A extending from the lower end 92b toward the bottom surface plates 5, 6; including.

  At the boundary between the side plates 3 and 4 and the bottom plates 5 and 6 in the vicinity of the opening P, the side plates 3 and 4 and the bottom plates 5 and 6 are connected via a connecting portion 80. As shown in FIG. 4, the connecting part 80 has one end connected to the inclined side 3B (4B) and the other end connected to the end side 5A (6A) on the opening P side of the bottom plate 5 (6). The side 80A, the mountain fold line 80a reaching the continuous portion 81 of the inclined side 3B (4B) and the connecting side 80A, and the end side 5A (6A) on the opening P side of the bottom plates 5 and 6 and the connecting side 80A It is configured as a region (substantially triangular region) surrounded by a mountain fold line 80 b that reaches the continuous portion 82.

  As shown in FIG. 4, the connection part 80 is provided so that it may be located in the connection part (boundary part) of the side surface board 3 (4) and the bottom face board 5 (6). The connecting side 80A is located on the inner side of the end side 5A (6A) on the opening P side of the bottom plate 5 (6), and is a virtual line VL extending the mountain fold line 3a toward the opening P side. Located to intersect. By providing the connecting portion 80 in such a positional relationship, it is difficult to apply an impact to the connecting portion 80 (the connecting side 80A), and it is temporarily applied to the connecting portion 80 (the connecting side 80A). Even so, since the connecting portion 80 can be bent along the mountain fold lines 80a and 80b toward the inner side of the multipack packaging box 1, the shock can be absorbed, so that the connecting portion 80 can be prevented from being damaged. it can. In other words, the presence of the mountain fold lines 80a and 80b provides a buffering effect against the impact applied to the connecting portion 80.

  In the present embodiment, the connecting side 80A is interposed between the inclined side 3B (4B) and the end side 5A (6A), and the shape thereof has bent portions with rounded corners at both ends. The shape may be sufficient, and you may have the curved shape which becomes convex toward the opening part P side. Since the connecting side 80A has such a shape, it is possible to disperse the impact applied to the connecting part 80 (the connecting side 80A), and thus it is possible to further prevent the connecting part 80 from being damaged.

  The angle θ ′ formed by the two mountain fold lines 80a and 80b is particularly limited as long as it can absorb an impact applied to the connecting portion 80 (the connecting side 80A) and can suppress damage to the connecting portion 80. Although it is not performed, it is preferably about 90 to 100 °.

  The continuous portion 81 between the inclined side 3B (4B) and the connecting side 80A and the continuous portion 82 between the end side 5A (6A) and the connecting side 80A are curved shapes (curvature radius 0. 7 mm (R0.7)). The continuous portions 81 and 82 are portions where the impact applied to the connecting portion 80 (connecting side 80A) tends to concentrate, and the mountain fold lines 80a and 80b reaching the continuous portions 81 and 82 are the other portions (folding). If the continuous portions 81 and 82 have a square shape, the impact is likely to break along the mountain fold lines 80a and 80b. . However, in this embodiment, since the continuous portions 81 and 82 have a curved shape, it is difficult for the impact applied to the connecting portion 80 (the connecting side 80A) to concentrate on the continuous portions 81 and 82. It can suppress that it breaks along the folding lines 80a and 80b.

  The inclined side 3B (4B) is bent toward the continuous portion 81 at the bending point 3C (4C), and is continuous to the connecting side 80A at the continuous portion 81. Further, the end side 5A (6A) is bent toward the continuous portion 82 at the bending point 5B (6B), and is continuous with the connecting side 80A at the continuous portion 82. The bending points 3C (4C) and 5B (6B) have a curved shape (curvature radius of about 1 mm (R1)) that is convex toward the opening P side. Thereby, even if a finger touches the bending points 3C (4C) and 5B (6B), there is an effect that no pain is caused.

  In addition, as shown in FIG. 5, the center line G1 of the end opening hole 21 provided corresponding to the containers at both ends is more outward than the center line B1 of the container located at both ends. It is desirable that it is shifted to (opening side). The center line G1 of the end opening hole 21 located at the end is a line parallel to the end reference line L1, and the center line B1 of the container is also a line parallel to the end reference line L1. The shift distance K1 (unit: mm) may be set to about 0.5 to 3.0 mm. In this way, the center position of the end opening holes 21 positioned at both ends is shifted from the center position of the can container toward the outside in the width direction by a desired distance K1, thereby holding the can. The power can be improved.

  As shown in FIG. 5, the middle opening hole 22 is desirably formed such that its width P22 is larger than the width P11 of the end opening hole 21. The ratio of these widths (P22 / P11) can be appropriately set within a range of preferably 1.1 to 1.5, more preferably 1.2 to 1.4. Furthermore, the middle opening hole 22 is preferably formed such that the opening area S2 is larger than the opening area S1 of the end opening hole 21. These opening area ratios (S2 / S1) can be appropriately set within a range of 1.1 to 3.1.

  As shown in FIG. 1, the top plate 2 is formed with two finger holes 16 for inserting and lifting a finger, and a cut line 17. The tear line 17 forms an upper surface tear opening piece, and the upper surface tear opening piece can be peeled off.

  As shown in FIG. 1, at the boundary between the side plates 3, 4 and the bottom plates 5, 6, container bottom fixing pieces 30 corresponding to each of a plurality of containers to be accommodated It is formed so as to straddle the folding lines 3a, 5a with the face plates 5, 6. Further, on the container bottom fixing piece 30, a substantially semicircular arc-shaped cut line having a base end on the same line as the folding line 5a is formed, and the locking claw portion 31 is configured by this cut line. One side of the container bottom fixing piece 30 is fixed to the bottom surface plates 5 and 6 as a base portion 33, and is cut out from the bottom surface plates 5 and 6 along the form of the container bottom fixing piece 30, thereby making the base portion 33 a base line. Is configured to be movable.

  As shown in FIG. 6, the container bottom fixing piece 30 is inserted into the container bottom concave portion 115 of the can container 100, bent with the base end portion 32 as a base line, and the tip 35 has a ring-shaped convex rim portion 111. It is comprised so that it may contact | abut to the inner side curved part of this, and fixation of a container is assisted by this. Then, when the base end portion 32 is bent as a base line, the latching claw is cut off by a substantially semicircular arc-shaped cut line 34 and is erected so as to constitute the same plane as the surface including the base portion 33 and the base end portion 32. Part 31 will appear. Since the latching claw portion 31 is in contact with the bottom of the can container 100, when the tip 35 is about to jump out of the container bottom recess 115, it is between the latching claw portion 31 and the bottom of the can container 100. Friction will occur. As a result, it is possible to suppress the container bottom fixing piece 30 (tip 35), in which the container bottom fixing piece 30 is locked to the bottom of the can container, from jumping out of the container bottom concave portion 115, and the container can be fixed. It will be assisted more firmly.

The suitable form of such a container bottom fixing piece 30 is demonstrated below.
As shown in FIG. 7, of the plurality (six) of container bottom fixing pieces 30, two container bottom fixing pieces 30 positioned substantially in the center in the width direction are between a base 33 and a tip 35, Between 33 and the installation width W1 necessary for fixing the container bottom of the tip 35, there are two extended portions 36 and 38 that are wider than the width (reference width) W0 on both sides of the base portion 33. The tip 35 has a shape along the inner curved shape of the ring-shaped convex rim 111 formed on the periphery of the container bottom 110 of the container 100. By having such a shape, the holding force of the container can be improved when the tip 35 is brought into contact with the inside of the ring-shaped convex rim 111 (see FIG. 6).

  The container bottom fixing piece 30 of the embodiment shown in FIG. 7 has a first expansion portion 38 (width W4) that swells outward on the way from the base 33 toward the tip 35, and further on the tip 35 side, It has the 2nd expansion part 36 (width W5). That is, of the two wide extension parts, the second extension part 36 is provided immediately before reaching the installation width W1 necessary for fixing the container bottom, and the first extension part 38 is the second extension part. It is provided closer to the base 33 than 36. By providing the second expansion portion 36, the installation width W1 necessary for fixing the container bottom at the tip 35 of the container bottom fixing piece 30 can be increased, and the simple container bottom fixing piece 30 without extreme unevenness is provided. Thus, packaging by a high-speed automatic filling machine can be performed more reliably.

  On the other hand, in the four container bottom fixing pieces 30 located in the vicinity of the opening P, the first extended portion 38 is wide toward the inner side in the width direction, but wide toward the opening P side. Except for the point which is not, it has the structure substantially the same as the two container bottom fixed pieces 30 located in the width direction substantially center mentioned above. If the first extended portion 38 in the container bottom fixing piece 30 is widened toward the opening P side, the edge of the opening hole after the container bottom fixing piece 30 is cut along its form, The length between the opening side edges 5A and 6A of the bottom plates 5 and 6 may be shortened, and the strength of the portion may be reduced.

  A multipack packaged product is completed by storing containers (six can containers) in the multipack packaging box 1 according to the present embodiment having the above-described configuration.

  The embodiment described above is described for facilitating understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  In the said embodiment, although demonstrated taking the case of the packaging box for multipacks for packaging canned beer, this invention is not limited to this, For example, alcoholic beverage cans, such as a sparkling liquor can and a Chuhi can It may also be applied to various other can products such as non-alcoholic beverage cans such as can juice, can coffee, can tea, can tea, and the like.

  In the above-described embodiment, the latching claw portion 31 is formed by a substantially semicircular arc-shaped cut line formed on the container bottom fixing piece 30, but the present invention is not limited to this. The locking claw portion 31 may not be provided.

[Example 1]
Assembling the unfolded sheet shown in FIG. 1, 20 packs of multipack packaging boxes 1 were prepared in which 6 350 mL cans of beer were packed together. Next, 4 packs (2 vertical packs x 2 horizontal packs) of the multipack packaging box 1 were packed together in each of the five cases of the rectangular parallelepiped wraparound type packaging box. And each wraparound type packaging box was dropped from predetermined height so that it might fall from one arbitrary corner | angular part in the bottom plate side of the said wraparound packaging box.

[Comparative Example 1]
Example 1 except that the multi-pack packaging box 1 in Example 1 is changed to the packaging box described in FIG. 1 (FIG. 1) of US Pat. No. 6,988,617 (packaged together with six 350 mL cans of beer) The wraparound packaging box was dropped in the same manner as in 1.

  As a result of the drop test, no damage (breakage) was found in the connecting portion 80 in the multipack packaging box 1 of Example 1. On the other hand, in 4 packs in a total of 20 packs of multipack packaging boxes of Comparative Example 1 (5 wraparound packaging boxes x 4 packs of multipack packaging boxes), the connecting portion of the multipack packaging box 1 of Example 1 Damage (breakage) was observed in a portion corresponding to 80.

  As is clear from the above test results, according to the multipack packaging box 1 of Example 1, even if an impact is applied to the connecting portion 80 (the connecting side 80A), it follows the mountain fold lines 80a and 80b. Since the connection part 80 bends toward the inner side of the multipack packaging box 1, the impact can be absorbed, and damage to the connection part 80 can be suppressed.

  The multi-pack packaging box of the present invention is a container of a certain quantity such as a non-alcoholic beverage can such as canned beer, canned liquor can, Chu-Hi can, canned juice, canned coffee, canned tea, canned tea, etc. It is a packaging box for packaging and can be used in the packaging industry in general.

DESCRIPTION OF SYMBOLS 1 ... Multipack packaging box 2 ... Top plate 3, 4 ... Side plate 3B, 4B ... Inclined side 5, 6 ... Bottom plate 5A, 6A ... Opening side edge 30 ... Container bottom fixing piece 80A ... Connection side 80a, 80b ... mountain fold line (first fold line, second fold line)
81, 82 ... continuous portion P ... opening VL ... virtual line

Claims (8)

An upper surface plate that covers the upper surface of a container group in which a plurality of containers are arranged in parallel, and a side plate that is connected to each of both side portions of the upper surface plate and is opposed to cover the side surfaces of the container group that are arranged in parallel. And a bottom plate having a locking portion that is connected to each of the side plates and can be engaged with each other, and can be stored so as to wrap the container group by engaging the bottom plates with each other, In the multipack packaging box in which an opening that allows the side surface of a part of the container group to be visually recognized is formed at both end portions where no side plate exists.
It is located at a boundary portion in the vicinity of the opening between the side plate and the bottom plate, and has a connecting portion that connects the side plate and the bottom plate,
The opening side edge located on the bottom plate side of the opening side edge of the side plate includes an inclined side that is inclined in the opening side direction toward the bottom plate,
The inclined side and the opening side edge of the bottom plate are continuous via a connecting side that constitutes the opening side edge of the connecting part,
The connecting portion is a first fold line extending from a predetermined point located at a boundary portion between the side plate and the bottom plate in the vicinity of the connecting side and the opening to a continuous portion of the inclined side and the connecting side. And a region surrounded by a second fold line extending from the predetermined point to a continuous portion of the opening side edge of the bottom plate and the connecting side ,
When the multipack packaging box is assembled, the connecting side is exposed to the opening side so as to constitute a part of the opening edge of the opening.
Multipack packaging box characterized by the above.   2. The multipack according to claim 1, wherein an opening side edge of the bottom plate is located closer to the opening than the connecting side continuous with the opening side edge of the bottom plate. Packaging box. A fold line is formed in a portion other than the vicinity of the opening in the boundary portion between the side plate and the bottom plate,
3. The multipack packaging box according to claim 1, wherein the connecting side is located so as to intersect with a virtual line obtained by extending the fold line toward the opening.   The multi-pack packaging box according to any one of claims 1 to 3, wherein the connecting side has a bent portion having rounded corners.   4. The multipack packaging box according to claim 1, wherein the connecting side has a curved shape that is convex toward the opening.   The continuous part of the inclined side and the connecting side and / or the continuous part of the bottom side plate opening side end side and the connecting side have a curved shape that is concave toward the opening side. The packaging box for multipacks according to any one of claims 1 to 5. A fold line is formed in a portion other than the vicinity of the opening in the boundary portion between the side plate and the bottom plate,
The multi-pack packaging box according to any one of claims 1 to 6, wherein a container bottom fixing piece is formed so as to straddle the fold line.   A multipack packaged product comprising a container stored in the multipack packaging box according to any one of claims 1 to 7.

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