JP5877019B2 - Wrap-around packing box - Google Patents

Description

  The present invention relates to a wrap-around packaging box that wraps and packs a product.

  As packaging boxes for storing and packaging canned products such as beer for storage and transportation, for example, wrap-around packaging boxes made of cardboard materials as disclosed in Patent Documents 1 and 2 are known.

Such a packaging box has a substantially rectangular parallelepiped shape. And the surface of the bottom part side of the canned product accommodated is made into a bottom surface, the surface which opposes a bottom surface is made into a top surface, and the 2 sides which a bottom surface and a top surface oppose are connected with a side surface.
Further, the top surface and the bottom surface on which the side surfaces are not formed are bent in the respective directions to form a flap, and the user opens the flap and takes out the canned product stored therein.
However, in order to prevent the stored canned product from shaking in the packaging box during transportation, etc., the canned products are close to each other and stored in the packaging box without any gaps. There is a problem that it is difficult to take out the canned product from.

  Therefore, in order to make it easy to take out canned products, for example, as shown in Patent Documents 1 and 2, a wrap-around type packaging box is known which is formed so that a part of the top surface or the bottom surface opens with a flap. Yes.

Japanese Patent Application Laid-Open No. 2006-076588 JP 2004-250016 A

For example, the packaging box (wraparound case) disclosed in Patent Document 1 is configured such that a part of the top surface is opened together with the central portion of the flap. According to this configuration, the user needs a force to break the flap in order to open the packaging box so as to break the flap. For this reason, even if a break line (perforation or the like) for breaking the flap is formed, there is a problem that it is difficult for the user to open the packaging box.
In addition, it is necessary to break and open the central portion of the flap while suppressing the flap so as not to peel off the glue between the flaps. In this respect as well, it is difficult for the user to open the packaging box.
In addition, when a multipack in which a plurality of canned products are combined into one is stored in a packing box, the multipack cannot be taken out with a structure in which only the central portion of the flap is opened.

  Moreover, since the packaging box (packaging material) disclosed by patent document 2 opens so that a wide surface part may be largely torn with a flap, it becomes impossible to hold | maintain the canned product accommodated in a wide surface part, and accommodates canned product suitably In addition, since the strength of the packaging box after the wide surface portion is opened is reduced, the function as the packaging box is lost.

  Therefore, the present invention provides a wrap-around packaging box that allows a user to easily open a stored item so that the user can easily take out the stored item, and can maintain the stored state of the stored item even in the opened state. This is the issue.

In order to solve the above problems, the present invention is such that a top surface provided with a top surface flap, a bottom surface provided with a bottom surface flap opposite to the top surface, and a pair of side surfaces provided with side flaps are bent at a ridgeline, A wrap-around packaging box is formed so that a ridge line between the top surface and one of the side surfaces becomes a joint. And, on the top surface, the top surface fold line that extends in the lateral direction along the top surface flap from the ridge line that becomes the joint portion toward the other ridge line that faces the top surface, and makes it easy to bend the top surface. And a top surface break line for forming a cut portion from the slit formed between the top surface flap adjacent to the other ridge line side and the side flap to the top surface folding line, and the bottom surface, the and the bottom flaps, two adjacent said side flap and two bottom break line to form a cut portion respectively from the two slit formed between are formed, two of the bottom surface The break line and the top surface break line are formed on the same side in the longitudinal direction along the ridge line, and the top surface in which a cut portion is formed along the top surface break line is along the top surface bend line Fold Gerare, in a state where the two cut portions along two of said bottom break line to the bottom surface is formed, characterized in that to maintain the storage state of all storage products.

  According to the present invention, it is possible to provide a wrap-around packaging box that can be easily opened in a state in which a user can easily take out stored items and that can maintain the stored state of stored items even in the opened state.

(A) is a figure which shows the packaging box in which the multipack was accommodated, (b) is a figure which shows the process of accommodating a multipack in a packaging box. It is an expanded view of a packing box. (A) is a figure which shows the top surface in the state where the top surface opening part opened, (b) is a figure which shows the bottom face in which the cut part was formed along the bottom face breaking line. These are figures which show the top surface breaking line formed continuously in a slit.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
As shown to (a) of FIG. 1, the wraparound type packaging box 1 which concerns on this embodiment packed the canned product 2 (canned beer etc.) with the packaging material 3a, for example, 6 cans were packed. It is a packing box that stores the multipack 3 as a stored item. As an example, the packing box 1 that stores four multipacks 3 is used.
The packaging box 1 in which the multipack 3 is housed and assembled has a substantially rectangular parallelepiped shape, and the plane on the bottom side of the canned product 2 is defined as a bottom surface 1b, and the plane facing the bottom surface 1b is defined as a top surface 1a. The two opposing sides of the bottom surface 1b and the top surface 1a are connected by a pair of opposing side surfaces 1c.

In addition, the multipack 3 which is a storage item of the packing box 1 is not limited to the multipack 3 of the canned product 2 such as canned beer, and the containerized product in which the product is sealed in the container is combined with the packaging material 3a. The integrated multipack 3 may be used.
Further, the number of canned products 2 included in one multipack 3 and the number of multipacks 3 stored in the packing box 1 are not limited.
For example, a multipack 3 in which four canned products 2 are packaged in a packaging material 3a and six multipacks 3 are packaged in a packaging box 1 or a multipack 3 in which two canned products 2 are packaged in a packaging material 3a The form stored in the packing box 1 may be 12 and the number of canned products 2 included in the multipack 3 and the number of multipacks 3 stored in the packing box 1 are not limited.

  A ridge line is defined between the top surface 1a and the bottom surface 1b and the side surface 1c, a first ridge line 11a and a second ridge line 11b are defined between the top surface 1a and the two side surfaces 1c, and a bottom ridge line 11c is defined between the bottom surface 1b and the side surface 1c. Called. Note that the second ridge line 11b is a ridge line formed by bending the top surface 1a and one side surface 1c, and the first ridge line 11a is a ridge line where a joining portion where the top surface 1a and one side surface 1c are joined is formed. The bottom side ridge line 11c is two ridge lines formed by bending the bottom side 1b and the two side surfaces 1c.

Further, a top surface flap 10a that is bent toward the bottom surface 1b is connected to an end of the top surface 1a to which the side surface 1c is not connected (that is, an end that is orthogonal to the first ridge line 11a and the second ridge line 11b). Hereinafter, an end provided with the top surface flap 10a connected perpendicularly to the first ridge line 11a and the second ridge line 11b is referred to as a top surface lateral direction edge 12a. And the top | upper surface flap 10a is formed so that it may bend | fold at the side of the bottom face 1b by making the top | upper surface horizontal direction edge 12a into a broken line.
Similarly, a bottom surface flap 10b that is bent toward the top surface 1a is connected to an end of the bottom surface 1b to which the side surface 1c is not connected (that is, an end orthogonal to the two bottom surface side ridge lines 11c). Hereinafter, an end provided with a bottom flap 10b connected perpendicularly to the two bottom ridge lines 11c is referred to as a bottom lateral end 12b. The bottom flap 10b is formed to bend toward the top surface 1a with the bottom lateral edge 12b as a broken line.

The top surface flap 10a and the bottom surface flap 10b are opened in a double-spread manner to form an opening for taking out the canned product 2 (multipack 3) stored in the packaging box 1, for example.
In addition, the code | symbol 10c is a side flap formed by bending the edge part of the side surface 1c in the side of the side surface 1c which each opposes. Reference numeral 3b of the multipack 3 is a hand-holding hole (finger hole) into which a user inserts a finger or the like when the user has the multipack 3. The finger hole 3b is known to have a shape in which, for example, two D-shaped holes are opened side by side symmetrically across the center.
The multipack 3 has two finger holes 3b formed in two holes directed toward the top surface 1a and 2 in the direction of each ridge line (first ridge line 11a, second ridge line 11b, bottom surface side ridge line 11c). It is stored in the packing box 1 so that the holes are lined up.

Hereinafter, the direction along the two bottom surface side ridge lines 11c in the first ridge line 11a, the second ridge line 11b and the bottom surface 1b on the top surface 1a, that is, the direction along the ridge line is the vertical direction Ln, and the top surface side provided with the top surface flap 10a. The direction along the bottom lateral edge 12b provided with the direction edge 12a and the bottom flap 10b, that is, the direction along the top flap 10a (bottom flap 10b) is the lateral direction Si, and the direction between the top surface 1a and the bottom surface 1b. Is the height direction Ht.
That is, in this embodiment, the multipack 3 is stored in the packaging box 1 so that the finger holes 3b formed by two holes are aligned in the vertical direction Ln with the top surface 1a being directed.

As shown in FIG. 1B, in the boxing process of the canned product 2, a predetermined number (for example, four) of multipacks 3 are pushed down by the push-in mechanism 100 so that the bottom surface 1 b of the packing box 1 is flattened. It is put on. At this time, for example, the multipacks 3 are arranged in two rows in the horizontal direction Si and in two rows in the vertical direction Ln and placed on the bottom surface 1b.
Thereafter, the packing box 1 developed in a planar shape is folded and formed into a box shape so that the top surface 1a overlaps the upper side of the multipack 3 by a packing device (not shown). It is stored in.
Furthermore, the top surface flap 10a, the bottom surface flap 10b, and the side flaps 10c are appropriately folded at each fold line to form the packaging box 1 in which the multipack 3 is stored.
Note that a bonding surface 1d is formed at the end of the side surface 1c connected to the top surface 1a, and the bonding surface 1d and the top surface 1a are overlapped and bonded by gluing or the like. In this case, it is preferable that the bonding surface 1d overlaps the top surface 1a at a position inside the packaging box 1a.
Further, the top surface flap 10a, the bottom surface flap 10b, and the side flaps 10c are attached by gluing or the like as appropriate.

  The wrap-around packaging box 1 according to the present embodiment is formed by using cardboard as a raw material, and a cardboard material that is developed as shown in FIG. 2 is appropriately bent. FIG. 2 is a view as seen from the outer surface of the packaging box 1, for example.

The plane S1 that is the top surface 1a and the plane S2 that is the bottom surface 1b are substantially rectangular (rectangular) of the same type, and for convenience, the long side is the vertical direction Ln and the short side is the horizontal direction Si. The vertical direction Ln and the horizontal direction Si can be set as appropriate depending on the size and number of multipacks 3 stored in the packing box 1.
Then, one long side of the plane S1 and the plane S2 extends to form a continuous plane S3A. This plane S3A becomes one side surface 1c of the packaging box 1. For example, the other long side of the plane S2 is extended to form a continuous plane S3B. This plane S3B becomes the other side surface 1c of the packaging box 1.
That is, when the packaging box 1 (see FIG. 1A) is expanded, as shown in FIG. 2, the plane S1 (top surface 1a), the plane S3A (side surface 1c), the plane S2 (bottom surface 1b), It arrange | positions in order of plane S3B (side surface 1c).

  Further, in the plane S3B, a plane S4 to be the bonding surface 1d is continuously formed on the end side formed in parallel with the long side of the plane S2. The flat surface S4 (bonding surface 1d) is bent so as to overlap the flat surface S1 that becomes the top surface 1a, and is bonded to the flat surface S1 with an applied adhesive (such as glue).

The two short sides of the plane S1 are extended to form a plane S1F that becomes the top flap 10a, and the two short sides of the plane S2 are extended to form a plane S2F that becomes the bottom flap 10b. The
Further, in the planes S3A and S3B, the end side on the extension of the short sides of the planes S1 and S2 is extended to form a plane S3F that becomes the side flap 10c.
In the packaging box 1 (see FIG. 1A), the top surface flap 10a and the bottom surface flap 10b are folded and attached appropriately so as to overlap the folded side flaps 10c.

A fold line L1 (broken line) is formed between each continuous plane. The folding line L1 is, for example, a concave portion formed so that the thickness direction of the corrugated cardboard material used as the material of the packaging box 1 (see FIG. 1A) is linearly thinned, and the canned product 2 (in FIG. 1). It is configured to be easily folded in the boxing process of (a).
Reference numeral L1a is a folding line between the plane S1 and the plane S3A, reference numeral L1b is a folding line between the plane S3A and the plane S2, reference numeral L1c is a folding line between the plane S2 and the plane S3B, and reference numeral L1d is the plane S3B. A fold line between the planes S4, L1e indicates a fold line between the planes S1 and S1F, and L1f indicates a fold line between the planes S2 and S2F.

When the folding lines L1a and L1d are assembled as the packaging box 1 (see FIG. 1A), they become the second ridge line 11b and the first ridge line 11a, respectively, and the folding lines L1b and L1c are respectively the bottom side ridge line 11c and Become.
Further, the fold line L1e between the plane S1 and the plane S1F (top surface flap 10a) becomes the top surface lateral edge 12a, and the fold line L1f between the plane S2 and the plane S2F (bottom surface flap 10b) is the bottom surface lateral end. It becomes side 12b.

In addition, as shown in FIG. 2, in the developed packaging box 1 (see FIG. 1A), the plane S1F (top flap 10a), the plane S3F (side flap 10c), the plane S2F (bottom flap 10b), The plane S3F (side flap 10c) is formed side by side, and a slit SL having an appropriate width is formed between the plane S1F and the plane S3F and between the plane S2F and the plane S3F.
The slit SL is formed on an extension of a folding line L1 formed between the plane S1 and the plane S3A, the plane S3A and the plane S2, and between the plane S2 and the plane S3B, and the top flap 10a and the bottom flap 10b are the side flaps 10c. It is configured to be bent without interfering with.

  And in the packaging box 1 (refer Fig.1 (a)) which concerns on this embodiment, as shown in FIG. 2, the fracture | rupture line | wire (top surface fracture | rupture) formed in the plane S1 used as the top | upper surface 1a with a perforation | perforation. A fold line (top fold line L3) connected to the line L2) and the top rupture line L2 is formed.

  The top surface break line L2 is a straight line extending on the plane S1 from the end of the slit SL at the intersection of the fold line L1e that becomes the top side lateral edge 12a and the fold line L1a that becomes the second ridge line 11b. It is preferable that the bending line L1a forms a predetermined angle (this angle is referred to as a first angle θ1). That is, it is preferable that the top surface break line L2 is formed at a predetermined first angle θ1 with respect to the vertical direction Ln (second ridge line 11b).

Further, the top surface folding line L3 connected to the top surface breaking line L2 extends from the end side (long side) where the joint portion is formed toward the bending line L1a facing the end side of the top surface flap 10a. It is preferably formed so as to extend substantially parallel to the fold line L1e. In the packaging box 1 assembled as shown in FIG. 1A, the plane S1 shown in FIG. 2 becomes the top surface 1a, and the first ridge line 11a between the top surface 1a and the side surface 1c is formed with a joint. It becomes a ridgeline. Further, the fold line L1a between the plane S1 and the plane S3A is opposed to the first ridge line 11a and becomes another ridge line (second ridge line 11b) where no joint is formed. From this, the top surface bending line L3 is directed from the first ridge line 11a where the joint portion is formed toward the other ridge line (second ridge line 11b) where the joint portion is not formed facing the first ridge line 11a. It is formed so as to extend substantially parallel to the surface flap 10a (top surface lateral end 12a), so that the top surface 1a can be easily bent.
Moreover, the top surface break line L2 is on the top surface 1a from the slit SL between the side flap 10c and the top surface flap 10a adjacent to each other at the other ridge line (second ridge line 11b) where the joint portion is not formed to the top surface fold line L3. This is a break line for forming the cut portion.

The top surface 1a has two opposing top surface lateral edges 12a, but the top surface break line L2 only needs to be formed on one side of the top surface lateral edges 12a. Hereinafter, the opening formed by bending the top surface 1a formed with the cut portion along the top surface breaking line L2 along the top surface folding line L3 is referred to as the top surface opening 16 (see FIG. 3A). ) And the side where the top surface breaking line L2 is formed, that is, the side of the top surface opening 16 is referred to as the “opening side”.
In addition, the structure which the top surface breaking line L2 and the top surface bending line L3 are formed in both of the two top surface horizontal direction edge | sides 12a which oppose, and the top surface opening part 16 opens may be sufficient.

  By the way, the end side of the top surface 1a that becomes the first ridge line 11a can be easily opened by the user by removing the bonding between the bonding surface 1d (plane S4) and the top surface 1a (plane S1). Since the portion 16 (see FIG. 3A) can be opened, a break line is unnecessary.

The top surface break line L2 is formed to be continuous with the slit SL at the intersection of the fold line L1a that becomes the second ridge line 11b and the fold line L1e that becomes the side edge 12a in the horizontal direction of the top surface (that is, the top surface). It is preferable that the surface flap 10a is formed without passing through the plane S1F. However, as a manufacturing error, it may be formed so as to be slightly continuous with the slit SL through the plane S1F serving as the top surface flap 10a. .
For example, as long as the user can easily open the top opening 16 (see FIG. 3A) and can easily take out the multipack 3 (see FIG. 3A). The top surface break line L2 may slightly pass through the plane S1F.

  And as shown to (a) of FIG. 3, when a user opens force on the vertical direction Ln when opening the top | upper surface flap 10a of an opening side, it follows the top | upper surface break line L2 to the top | upper surface bending line L3. In addition, if the first ridge line 11a side is configured so that the top surface 1a and the bonding surface 1d can be easily peeled off, the user can attach the top surface 1a to the top surface. The top opening 16 can be opened by being easily bent outward along the fold line L3. And the multipack 3 can be exposed and taken out to the side of the top | upper surface 1a.

  At this time, in the present embodiment, the top surface flap 10a is not broken because the top surface break line L2 does not pass through the plane S1F that becomes the top surface flap 10a as shown in FIG. Therefore, the user does not need a force for breaking the top surface flap 10a. Moreover, the 1st ridgeline 11a side in which the junction part is formed only peels off adhesion (sticking) with the top | upper surface 1a and the bonding surface 1d (side surface 1c), and does not need to form a notch | incision part. Therefore, the user can easily open the top surface opening 16 only by forming a cut portion on the top surface 1a side without breaking the top surface flap 10a at one top surface breaking line L2.

  Further, when the first angle θ1 formed by the top surface breaking line L2 and the bending line L1a shown in FIG. 2 is large, the top surface breaking line L2 is inclined to the lateral Si side. In this case, when the user forms the cut portion along the top surface break line L2, the user operates so as to twist the top surface flap 10a in the lateral direction Si, and the cut portion along the top surface break line L2 is moved to the top. It cannot be easily formed on the surface 1a. In particular, when the first angle θ1 is 45 degrees or more, the amount of operation for twisting the top surface flap 10a in the lateral direction Si is larger than the amount of operation for pulling the top surface flap 10a in the vertical direction Ln, and the work for forming the cut portion along the top surface breaking line L2 The ease of is reduced.

  Therefore, the first angle θ1 formed by the top surface break line L2 and the fold line L1a is preferably 45 degrees or less, and the first angle θ1 is preferably smaller.

Further, when the first angle θ1 formed by the top surface break line L2 and the fold line L1a is 0 degree or more, as shown in FIG. 3A, the top surface fold line L3 along the top surface break line L2 is reached. When the cut portion is formed on the top surface 1a, the side surface 1c is reinforced by a rib-like portion 1e that bends toward the top surface 1a and has a first angle θ1 as an apex angle. With this configuration, even when the top surface opening 16 is in an open state, the side surface 1c is reinforced by the rib-shaped portion 1e, and thus the packaging box 1 is reinforced.
From the above, it is preferable that the first angle θ1 formed by the top surface break line L2 and the fold line L1a is larger than 0 degree and smaller than 45 degrees. For example, when the first angle θ1 is smaller than 30 degrees by experiment measurement or the like, more preferably 25 degrees, and even more preferably 20 degrees, the user can easily form a cut portion on the top surface 1a. all right.

  Further, as described above, the packaging material 3a of the multipack 3 has the two-hole finger holes 3b opened, the finger holes 3b are directed to the top surface 1a, and the two-hole finger holes 3b are formed. The multipack 3 is stored in the packing box 1 so as to be arranged in the vertical direction Ln. Accordingly, if the top surface opening 16 is opened so that at least one of the finger holes 3b is exposed to the top surface 1a, the user puts his / her finger on the exposed finger holes 3b and packs the multipack 3 into the packing box. 1 can be easily taken out.

For example, if the top surface opening 16 is opened so that at least a part of one hole arranged on the opening side of the two finger holes 3b arranged in the vertical direction Ln is exposed, the user can open the top surface. The multipack 3 can be easily taken out by opening the part 16.
If the top surface 1a side of the multipack 3 is exposed when the top surface opening 16 is opened, the finger holes 3b can be exposed to the top surface 1a side. However, when the entire surface of the multipack 3 is exposed on the top surface 1a side, the multipack 3 is not supported by the top surface 1a, and the multipack 3 is not suitably stored in the packaging box 1. Therefore, it is preferable to open the top surface opening 16 to such an extent that the entire surface of the multipack 3 on the top surface 1a side is not exposed.

As described above, in the case of the packaging box 1 in which the four multipacks 3 are stored, it is generally stored in two rows in the vertical direction Ln and in two rows in the horizontal direction Si.
For example, since the multipack 3 arranged on the opening side has a center of gravity at a substantially central portion in the vertical direction Ln, the top surface opening portion 16 opens from the top surface lateral edge 12a beyond the central portion of the multipack 3. Then, the center of gravity of the multipack 3 is not supported by the top surface 1a and becomes unstable. In other words, the multipack 3 is not suitably stored by the packing box 1 (see FIG. 1A).

When the multipacks 3 are arranged in two steps in the vertical direction Ln, the central portion of the multipack 3 (assumed to be the first step) arranged on the opening side in the vertical direction Ln is from the top lateral edge 12a to the top. It is located at a quarter of the length of the surface 1a in the longitudinal direction Ln.
Therefore, when the top surface opening 16 is configured to open to a length that is ¼ of the length in the vertical direction Ln of the top surface 1a, the multipack 3 (the first pack) accommodated in the vertical direction Ln on the opposite side to the opening side. The second stage is supported and supported by the top surface 1a, the bottom surface 1b, and the two side surfaces 1c. Even when the top surface opening 16 is open, the first-stage multipack 3 is supported by the bottom surface 1b and the two side surfaces 1c, and the top surface 1a side is long in the vertical direction Ln. A half position (position of the center of gravity) is supported and suitably stored by the top surface 1a.

That is, the position where the top surface fold line L3 is 1/4 or less of the length in the vertical direction Ln of the top surface 1a from the top surface lateral end 12a (the end of the top surface 1a provided with the top surface flap 10a). The structure formed in is preferable.
According to this configuration, the center of gravity of the multipack 3 is supported from the surroundings by the top surface 1a, the bottom surface 1b, and the two side surfaces 1c in both the first step and the second step even when the top surface opening 16 is open. The multipack 3 is stored in the packing box 1 in a stable state.
That is, even when the top opening 16 is open, the packing box 1 can store all four multipacks 3 in a suitably stable state, and the multipack 3 stored in the packing box 1 is stored. Can be maintained.

In addition, in the case of the multipack 3 in which the 6 cans of the canned products 2 are combined into one, the canned products 2 are arranged in three stages in the direction of the vertical direction Ln of the top surface 1a when stored in the packing box 1. Often done. Since the fingerhole 3b is formed between the canned product 2 and the canned product 2, in the packaging material 3a, the fingerhole 3b is positioned at 1/3 of the direction of the longitudinal direction Ln when stored in the packaging box 1. Is formed. When the multipacks 3 are arranged in two stages in the vertical direction Ln, the position of 1/3 in the vertical direction Ln of the multipack 3 arranged in the first stage is the top from the top lateral edge 12a. It is located 1/6 of the length of the surface 1a in the longitudinal direction Ln. From this, when the top surface opening 16 is configured to open at least 1/6 of the length in the longitudinal direction Ln of the top surface 1a, at least the finger holes 3b formed in the packaging material 3a accommodated in the first stage. A part can be exposed to the top surface 1a side.
That is, it is preferable that the top fold line L3 is formed at a position that is 1/6 or more and 1/4 or less of the length in the longitudinal direction Ln. With this configuration, when the top surface opening 16 is opened, at least a part of the finger holes 3b of the multipack 3 arranged in the first stage can be suitably exposed to the top surface 1a side of the packaging box 1, Furthermore, the multipack 3 arrange | positioned at the 1st step can be suitably supported by the top | upper surface 1a.

  When the multipack 3 is stored in three or more stages in the vertical direction Ln, or when the stored product is not the multipack 3, the position of the center of gravity of the multipack 3 (stored product) arranged on the most opening side is the top. What is necessary is just to set it as the structure supported by the surface 1a.

From the above, in the packaging box 1 according to the present embodiment (see FIG. 1A), the two-stage multipack 3 is accommodated in the vertical direction Ln, and the top surface opening 16 is the top side edge in the horizontal direction. It is preferable to open from 12a (see FIG. 2) to a position that is 1/4 or less of the length of the top surface 1a in the longitudinal direction Ln.
That is, the top surface folding line L3 is formed at a distance that is 1/4 or less of the length in the longitudinal direction Ln of the top surface 1a (packaging box 1) from the top surface lateral end 12a on the opening side. It is preferable that the length in the vertical direction Ln of the surface breaking line L2 is formed to be ¼ or less of the length in the vertical direction Ln of the top surface 1a. Further, the length in the vertical direction Ln of the top surface breaking line L2 is formed to be 1/6 or more of the length in the vertical direction Ln of the top surface 1a, and is opened in the packaging material 3a of the first multipack 3 in the first stage. It is more preferable that the top surface opening 16 is opened so that at least a part of the finger hole 3b is exposed to the top surface 1a side.

In addition, as shown in FIG. 2, it is preferable that two break lines (bottom break line L4) including perforations extending from the opening side are also formed on the plane S2 serving as the bottom surface 1b. That is, the bottom surface break line L4 is preferably formed on the same side as the top surface break line L2 in the longitudinal direction Ln.
The bottom surface breaking line L4 is two straight lines extending on the plane S2 from the end of the slit SL at the intersection of the folding line L1f serving as the bottom lateral edge 12b and the folding lines L1b and L1c serving as the bottom edge 11c. It is preferable that each of the bending lines L1b and L1c forms a predetermined angle (this angle is referred to as a second angle θ2). That is, it is preferable that the bottom fracture line L4 is formed at a predetermined second angle θ2 with respect to the vertical direction Ln (bottom side ridge line 11c).

The second angle θ2 formed by the bottom fracture line L4 and the folding lines L1b and L1c may be the same as or different from the first angle θ1 formed by the top surface breaking line L2 and the folding line L1a. For the same reason as the first angle θ1, it is preferably larger than 0 degree and smaller than 45 degrees, preferably smaller than 30 degrees, and more preferably 20 degrees.
Further, the bottom surface breaking line L4 is formed so as to be continuous with the slit SL at the intersection of the folding lines L1b and L1c serving as the bottom surface side edge line 11c and the folding line L1f serving as the bottom surface lateral edge 12b (that is, the bottom surface). It is preferable that the flat surface S2F to be the flap 10b is not formed), but as a manufacturing error, the flat surface S2F to be the bottom flap 10b may be slightly passed to be continuous with the slit SL. For example, as in the case of the top surface breaking line L2, the plane S2F can be set as long as the user can easily open the bottom surface 1b and can easily take out the multipack 3 (see FIG. 3A). It may be a bottom fracture line L4 that passes slightly.

Further, the finger holes 3b (see FIG. 3A) of the multipack 3 are not formed on the bottom surface 1b side, and the bottom surface 1b does not need to be opened to the position of the finger holes 3b in the vertical direction Ln. In other words, if the bottom surface 1b opens to such an extent that the end portion of the packaging material 3a of the multipack 3 is exposed on the bottom surface 1b side, the user can grasp the packaging material 3a exposed from the bottom surface 1b side to hold the multipack. 3 can be easily taken out of the packing box 1. From this, the length in the vertical direction Ln of the bottom surface breaking line L4 formed on the plane S2 serving as the bottom surface 1b is larger than the length in the vertical direction Ln of the top surface breaking line L2 formed on the plane S2 serving as the top surface 1a. It can be short.
Further, as described above, since the length in the vertical direction Ln of the bottom surface breaking line L4 formed on the plane S2 serving as the bottom surface 1b is shorter than the length in the vertical direction Ln of the top surface breaking line L2, the opening amount of the bottom surface 1b is reduced. The strength of the packaging box 1 can be suitably maintained.

Further, as shown in FIG. 1B, in the boxing process of the canned product 2, the multipack 3 is pushed by the pushing mechanism 100 so as to slide on the bottom surface 1b. Therefore, when a perforation is formed on the bottom surface 1b, the perforation may become resistance to the progress of the multipack 3 and the packaging material 3a may be damaged.
In the present embodiment, as shown in FIG. 2, the length of the bottom surface breaking line L4 formed on the bottom surface 1b (plane S2) is shortened to prevent the progress of the packaging material 3a in the manufacturing process of the canned product 2. Resistance can be reduced.

  Moreover, since there are few openings to the vertical direction Ln of the bottom face 1b, the contact area of the multipack 3 and the bottom face 1b can be enlarged, and the multipack 3 is accommodated suitably. That is, the storage state of the multipack 3 is preferably maintained.

  As described above, the packaging box 1 according to the present embodiment is laterally extended from the second ridge line 11b side to the first ridge line 11a on the opening side of the top surface 1a as shown in FIG. A top surface fold line L3 formed from a top surface fold line L3 formed linearly along Si and a slit SL (see FIG. 2) formed between the top surface flap 10a and the side flap 10c on the second ridge line 11b side. And a top surface breaking line L2 for forming the cut portion.

According to this structure, the user can form the cut | notch part along the top surface breaking line L2 in the top surface 1a to the top surface bending line L3, without breaking the top surface flap 10a. The user can easily bend the top surface 1a at the top surface folding line L3 to open the top surface opening 16, and the multipack 3 stored in the first stage is exposed to the top surface 1a side. And can be easily taken out from the packing box 1.
Further, the top surface opening 16 is in an open state by making the length in the vertical direction Ln of the top surface breaking line L2 shorter than 1/2 of the length in the vertical direction Ln of the multipack 3 to be stored. However, the storage state of all the multipacks 3 can be suitably maintained.
Further, if the top surface opening 16 is opened so that at least a part of the finger holes 3b formed in the packaging material 3a of the multipack 3 stored in the first stage is exposed to the top surface 1a side. The user can easily take out the multipack 3 from the packaging box 1 by bending the top surface 1a to open the top surface opening 16 and inserting a finger or the like into the finger hole 3b.

  Further, a bottom fracture line L4 is also formed on the opening side of the bottom surface 1b (see FIG. 3B), and the user can easily form a cut portion in the bottom surface 1b along the bottom fracture line L4. The pack 3 can be easily exposed to the bottom surface 1b side. With this configuration, the user can easily grasp the packaging material 3a of the multipack 3 also from the bottom surface 1b side, and can take out the multipack 3 from the packaging box 1 more easily.

As shown in FIG. 4, the top surface breaking line L2 is formed continuously with the end on the top surface lateral end 12a side of the slit SL formed between the top surface flap 10a and the side flap 10c. It is preferred that
The end portion of the slit SL is a portion where the folding line L1 (L1a, L1e) where the corrugated cardboard material is formed is concentrated and the strength is low. Therefore, the top surface breaking line L2 is continuously formed in this portion. Then, the user can easily form a cut portion along the top surface breaking line L2 on the top surface 1a.
Similarly, the bottom fracture line L4 (see FIG. 2) is continuous with the end of the slit SL formed between the bottom flap 10b (see FIG. 2) and the side flap 10c on the bottom lateral edge 12b side. Preferably it is formed.

1 Packing box (wraparound type packing box)
1a Top surface 1b Bottom surface 1c Side surface 3 Multipack
3a Packaging material 3b Finger hole (hand-held hole)
10a Top surface flap 10b Bottom surface flap 10c Side flap 11a First ridge line (ridge line to be joined)
11b Second ridge line (other ridge lines)
11c Bottom side ridge line 16 Top opening L1 Folding line L2 Top breaking line L3 Top folding line L4 Bottom breaking line SL Slit θ1 First angle θ2 Second angle

Claims (6)

A top surface including a top surface flap, a bottom surface facing the top surface and including a bottom surface flap, and a pair of side surfaces including side flaps are folded at a ridgeline, and between the top surface and the one side surface It is a wraparound type packaging box formed so that the ridge line becomes a joint part,
On the top surface,
A top surface fold line that extends in the lateral direction along the top surface flap toward the other ridge line facing the joint from the ridge line to be the joint, and makes it easy to bend the top surface;
A top surface break line for forming a cut portion from a slit formed between the top surface flap and the side flap adjacent on the other ridge line side to the top surface folding line is formed,
On the bottom surface,
Wherein a bottom flap, the two adjacent side flaps and two bottom break line to form a cut portion respectively from the two slit formed between is formed,
The two bottom break lines and the top break line are formed on the same side in the vertical direction along the ridge line,
The state in which the top surface in which the cut portion along the top surface break line is formed is bent along the top surface fold line, and two cut portions along the bottom surface break line are formed on the bottom surface A wrap-around packaging box characterized in that the storage state of all stored items can be maintained.   2. The wrap-around packaging box according to claim 1, wherein the vertical length of two bottom break lines is shorter than the vertical length of the top break line.   The top surface fold line is formed at a position that is equal to or less than ¼ of the longitudinal length of the top surface from an edge of the top surface provided with the top surface flap. Or the wraparound type packaging box of Claim 2.   The top surface fold line is formed at a position that is at least 1/6 of the longitudinal length of the top surface from an edge of the top surface provided with the top surface flap. Wrap-around packing box described in 1. The top surface break line is linear, and a first angle greater than 0 degree with respect to the longitudinal direction is formed from a slit formed between the top surface flap and the side flap adjacent on the other ridge line side. Formed diagonally,
Each of the two bottom surface breaking lines is linear, and from each of two slits formed between the two side flaps adjacent to the bottom surface flap, 5. The wrap-around packaging box according to claim 1, wherein the wrap-around packaging box is formed obliquely at two angles.   The wrap-around packaging box according to claim 5, wherein the first angle and the second angle are smaller than 30 degrees.

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