JP2014051297A - Cardboard packing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cardboard packing box that can prevent a decrease in anti-slip capability of a surface of the cardboard even though the cardboard composing the packing box gets thinner, accompanied by decrease of a basis weight thereof.SOLUTION: A cardboard packing box comprises: an upper surface part and a bottom surface part 3; and four lateral surface parts composing lateral walls of the packing box. In the bottom surface part 3 are laminated first ink layers 321 formed at least in first ink layer formation regions 36 on the front liner of the cardboard composing the bottom surface part 3 and an anti-slip layer 34 formed across the front liner in this order. The rear liner of the cardboard composing the bottom surface part 3 has a plurality of container ground regions 35 with which when container-packed beverages are stored in the packing box, the bottom part of the container-packed beverage contacts. The first ink layer formation region 36 are regions on the front liner of the cardboard composing the bottom part 3 that are opposing to the container ground regions 35 located at the four corners of the bottom part 3, of the plurality of container ground regions 35, where the first ink layers 321 are formed respectively in the first layer formation regions 36.

Description

  The present invention relates to a corrugated cardboard packaging box capable of packaging a plurality of containers (can containers, etc.) filled with beverages.

  2. Description of the Related Art Conventionally, a corrugated cardboard packaging box that can package a plurality of container-packed beverages is used for packaging a container-packed beverage in which beverages are filled in cans or the like. As such a packaging box, a pair of rectangular top and bottom surfaces, a pair of side surfaces connecting them, an inner flap continuous to the edge of each side surface, and each of the top and bottom surfaces A wrap-around packaging box having an outer flap that is continuous with the edge of the wraparound, four side portions that are continuous via a crease line, and a lid flap and a bottom flap that are continuous with the edge of each side portion. A so-called A-type packaging box is mainly used.

  In general, a packaging box formed by packaging such a packaged beverage is stacked and transported in a plurality of stages, but it is necessary to prevent collapse of the cargo due to shaking during transportation. Therefore, conventionally, various measures for preventing collapse of goods during transportation have been proposed. For example, a method of preventing load collapse during transportation by forming a non-slip resin layer (slip-proof resin layer) on the surface of the corrugated cardboard constituting the packaging box (on the front liner) has been proposed (patent) References 1 and 2).

JP-A-8-252880 Japanese Patent Laid-Open No. 3-118147

  In recent years, for the purpose of reducing the manufacturing cost of cardboard packaging boxes, saving resources, and reducing the transportation cost of packaging boxes packed with packaged beverages, the weight of packaging boxes has been reduced, that is, the thickness of the cardboard constituting the packaging boxes has been reduced. (Reduction of basis weight) is achieved. However, when the basis weight is reduced by reducing the thickness of the corrugated cardboard, the anti-slip resin layer formed on the corrugated cardboard surface as described in Patent Documents 1 and 2 can easily penetrate into the corrugated cardboard with the reduced basic weight. As a result, there is a problem that the smoothness of the corrugated cardboard is lowered and the antislip performance by the antislip resin layer is lowered.

  Generally, one or a plurality of printed layers mainly for cosmetics are formed on the entire upper surface of the packaging box. Therefore, in the upper surface portion, it is possible to prevent the slip-proof resin layer on which the printed layer is formed from penetrating into the cardboard. Therefore, even if the basis weight of the corrugated cardboard is reduced, the anti-slip resin layer is difficult to penetrate, so that the smoothness of the upper surface portion of the packaging box is maintained. On the other hand, the bottom part of the packaging box does not require a cosmetic property as compared with the top part, so that a printed layer is not formed on the entire surface. As a result, the basis weight of the corrugated cardboard is reduced, thereby preventing slipping. The conductive resin layer is likely to penetrate and the smoothness of the bottom surface of the packaging box is lowered.

  The packaging boxes are usually stacked in multiple stages so that the bottom surface of the upper packaging box and the upper surface of the lower packaging box are in contact with each other. If the drop is reduced, cargo collapse may occur due to shaking during transportation.

  In order to solve the above problem, it is also conceivable to form a printed layer on the entire bottom surface of the packaging box and prevent the slippery resin layer from penetrating into the cardboard by the printed layer. However, when the printed layer is formed on the entire bottom surface where cosmetics are not required compared to the top surface, the manufacturing cost of the packaging box increases, and for the purpose of reducing the manufacturing cost of the cardboard packaging box, The significance of thinning the corrugated cardboard constituting the packaging box is diminished.

  In view of such circumstances, the present invention provides a corrugated packaging box that can suppress a decrease in the slip resistance of the corrugated cardboard surface even if the basis weight is reduced as the thickness of the corrugated cardboard constituting the packaging box is reduced. The purpose is to provide.

  In order to solve the above problems, the present invention is a corrugated cardboard packaging box for storing a plurality of packaged beverages, and comprises a substantially rectangular top and bottom portions and a side wall of the packaging box. At least four side surfaces, and at least the first ink layer provided in the first ink layer forming region on the surface liner of the corrugated cardboard constituting the bottom surface portion on the bottom surface portion; And a non-slip layer provided in the whole area in this order, and a bottom liner of the container-packed beverage when the container-packed beverage is stored in the packaging box on the back liner of the cardboard constituting the bottom surface portion. There are a plurality of container grounding areas in contact with each other, and the first ink layer forming area constitutes the bottom surface part facing the container grounding areas located at the four corners of the bottom surface part of the plurality of container grounding areas. Corrugated board Of an area on the table liner, the first ink layer to the each first ink layer forming area provides a corrugated board packaging box which is characterized by being at least provided (invention 1).

  In the above invention (Invention 1), in a predetermined region including the center of the front liner of the corrugated cardboard constituting the bottom portion, the second ink layer forming region is a region different from the first ink layer forming region. It is preferable that a second ink layer is further formed (Invention 2).

  In the above invention (Invention 2), the cardboard packaging box is a cardboard packaging box for storing the 24 container-packed beverages arranged in 4 rows × 6 columns, and the second ink layer forming region Is preferably a region corresponding to a region in which 16 of the 24 packaged beverages are arranged in 4 rows × 4 columns (Invention 3).

In the said invention (invention 2 and 3), it is preferable that the said 2nd ink layer is formed so that it may overlap with the center of the front liner of the cardboard which comprises the said bottom face part (invention 3). In the above inventions (Inventions 2 to 4), the first ink layer and the second ink layer may not be continuous (Invention 5), or at least one of the first ink layer and the second ink layer. And may be continuous (Invention 6). In the said invention (invention 1-6), the area of each said 1st ink layer can be 35% or more of the area of one said container grounding area | region. In the said invention (invention 1-7), it is preferable that the basic weight of the cardboard which comprises the said bottom face part is 120-140 g / m < ³ > (invention 8).

  The present invention also provides a packaged product in which a plurality of packaged beverages are stored in a cardboard packaging box according to the above inventions (Inventions 1 to 8).

  ADVANTAGE OF THE INVENTION According to this invention, even if basic weight falls with the thinning of the corrugated cardboard which comprises a packaging box, the corrugated cardboard packaging box which can suppress the fall of the slip prevention property of the said corrugated cardboard surface can be provided.

FIG. 1 is a development view showing a packaging box according to an embodiment of the present invention. FIG. 2 is a schematic perspective view showing a packaging box according to an embodiment of the present invention. FIG. 3 is a cross-sectional view taken along line AA in FIG. 1 showing the top plate of the packaging box according to the present embodiment. 4 is a cross-sectional view showing a bottom plate of the packaging box according to the present embodiment, FIG. 4 (a) is a cross-sectional view taken along line BB in FIG. 1, and FIG. 4 (b) is a cross-sectional view taken along line CC in FIG. It is sectional drawing. FIG. 5 is a plan view showing a bottom plate of a packaging box according to an embodiment of the present invention, and FIG. 5A is a plan view showing a state in which a first ink layer and a second ink layer are formed, FIG. 5 (b) is a plan view in which the first ink layer and the second ink layer are omitted from the plan view shown in FIG. 5 (a). FIGS. 6A to 6F are plan views (partial plan views) showing modifications of the first ink layer formed on the bottom plate of the packaging box according to the embodiment of the present invention. FIG. 7 is a plan view showing a first ink layer forming region and a second ink layer forming region in the bottom plate of the packaging box according to the embodiment of the present invention. FIG. 8 is a plan view illustrating an arrangement example of the packaging boxes when the packaging boxes according to the embodiment of the present invention are stacked in a plurality of stages on a pallet. FIG. 9 is a plan view showing a modification of the second ink layer formed on the bottom plate of the packaging box according to the embodiment of the present invention.

Hereinafter, a packaging box according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a developed view showing the packaging box according to the present embodiment, FIG. 2 is a schematic perspective view showing the packaging box according to the present embodiment, and FIG. 3 is a top view of the packaging box according to the present embodiment. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 1 showing the face plate, and FIG. 4 is a cross-sectional view taken along the line BB and a cross-sectional view taken along the line CC in FIG. FIG. 5 is a plan view showing a bottom plate of the packaging box according to the present embodiment.

  As shown in FIG. 1, a packaging box 1 according to this embodiment includes a top plate 2, a bottom plate 3, and a band-shaped body having two side plates 4 and 5 connecting them, and a top plate 2 and a bottom plate. Wrap-around cardboard packaging comprising outer flaps 11 and 12 connected to respective end edges 3 and inner flaps 13 and 14 connected to end edges of two side plates 4 and 5 A box, wherein the top plate 2 and the bottom plate 3 form an octagonal corner cut shape, and have bent connecting pieces 15 and 16 that connect the two side plates 4 and 5 and the inner flaps 13 and 14, respectively. This is a wrap-around packaging box called a so-called corner cut carton.

  In the packaging box 1 according to the present embodiment, 24 (arranged in 4 rows × 6 columns) container-packed beverages (arranged in 4 rows × 6 columns) in a belt-like body having a top plate 2, a bottom plate 3, and two side plates 4, 5 After being stored so as to wrap up a group of canned beverages such as canned beer, it is integrally fixed in a cylindrical shape by a paste margin piece 17 continuous with one side plate 4. Then, the four folding connecting pieces 15 and 16 are folded inward from the crease lines 21 and 22, and the four inner flaps 13 and 14 are folded inward from the crease lines 23 and 24, and the crease lines 25 and 26 to 4 are further folded. The two outer flaps 11 and 12 are folded inward, and the inner flaps 13 and 14 and the outer flaps 11 and 12 are fixed. Thereby, the packaging box 1 as shown in FIG. 2 is completed. This state corresponds to a so-called shipping box. Note that the assembly method is not limited to the above method.

  As shown in FIG. 3, the upper surface plate 2 in the present embodiment is formed so as to cover the ink layer 22, the corrugated cardboard 21 as the base paper, the ink layer 22 formed on the entire surface liner of the corrugated cardboard 21, and the ink layer 22. The base resin layer 23 thus formed and the anti-slip resin layer 24 formed on the base resin layer 23 are configured.

  In addition, as shown in FIG. 4, the bottom plate 3 in the present embodiment includes a corrugated cardboard 31 as a base paper and predetermined areas (first ink layer forming area and second ink layer forming area) on the front liner of the cardboard 31. A first ink layer 321 and a second ink layer 322 formed on the substrate, and a base resin layer 33 formed on the front liner of the cardboard 31 so as to cover the first ink layer 321 and the second ink layer 322; The anti-slip resin layer 34 is formed on the base resin layer 33.

  The ink layer 22, the first ink layer 321 and the second ink layer 322 are generally composed of an ink material used as paper printing ink, and the ink material is not particularly limited. For example, an ink material containing styrene, acrylic or the like as a binder and a predetermined pigment (white pigment or the like) is used. The ink layer 22 formed on the upper surface plate 2 is formed in consideration of the cosmetic properties of the packaging box 1, and is generally formed by laminating a plurality of color ink layers. Therefore, the first ink layer 321 and the second ink layer 322 in the present embodiment are preferably made of the same ink material as the one color ink layer of the plurality of color ink layers constituting the ink layer 22. However, you may be comprised with the ink material different from those ink layers.

  Examples of the resin material constituting the base resin layers 23 and 33 and the anti-slip resin layers 24 and 34 include water-soluble varnish containing acrylic resin and the like. The resin materials constituting the base resin layers 23 and 33 and the anti-slip resin layers 24 and 34 may be different resin materials or the same resin material. Further, the base resin layers 23 and 33 may be omitted.

In the present embodiment, the cardboards 21 and 31 constituting the top plate 2 and the bottom plate 3 (packaging box 1) are made thinner. Specifically, while the basis weight of the cardboard in a conventional packaging box of the order 140 g / m ² Ultra 180 g / m ² or less, the basis weight of the cardboard 21 and 31 in this embodiment is 120-140 g / m ² Degree.

  Therefore, in the bottom plate 3, a region where the first ink layer 321 and the second ink layer 322 are not formed on the front liner of the cardboard 31 (the base resin layer 33 and the anti-slip resin layer 34 directly above the front liner of the cardboard 31. In the region in which the base resin layer 33 and the anti-slip resin layer 34 are formed, the resin material and the like constituting the base resin layer 33 and the anti-slip resin layer 34 are immersed in the cardboard 31.

  On the other hand, in the region where the first ink layer 321 and the second ink layer 322 are formed (first ink layer formation region and second ink layer formation region), the first ink layer 321 and the second ink layer 322 are formed. Serves to prevent the resin material or the like constituting the base resin layer 33 and the anti-slip resin layer 34 from entering the cardboard 31. Therefore, an anti-slip resin layer 34 with good smoothness is formed on the first ink layer 321 and the second ink layer 322.

  In addition, since the ink layer 22 is formed on the entire surface liner of the corrugated cardboard 21 in the upper surface plate 2, they are configured when the base resin layer 23 and the anti-slip resin layer 24 are formed on the ink layer 22. The resin material or the like that does not soak into the cardboard 21. Therefore, the anti-slip resin layer 24 with good smoothness is formed on the upper surface plate 2.

  Therefore, when the packaging boxes 1 according to this embodiment are stacked in a plurality of stages so that the bottom plate 3 of the upper packaging box 1 and the upper surface plate 2 of the lower packaging box 1 are brought into contact with each other, The anti-slip resin layer 24 and the anti-slip resin layer 34 on the first ink layer 321 and the second ink layer 322 of the bottom plate 3 are in contact with each other, but the smoothness of the anti-slip resin layers 24 and 34 is good. Thus, the contact area and frictional force between the top plate 2 of the lower packaging box 1 and the bottom plate 3 of the upper packaging box 1 can be increased. Therefore, according to the packaging box 1 which concerns on this embodiment, it can prevent that the collapse of the load by shaking etc. at the time of transport arises.

  When a plurality of packaged beverages are stored in the packaging box 1 according to the present embodiment, the can body portion 41 of each packaged beverage is placed on the back liner of the cardboard 31 of the bottom plate 3 (the liner located inside the packaging box 1). A can bottom portion (ring-shaped convex rim portion) 42 having a smaller diameter comes into contact. The front liner facing each of the container grounding areas 35 located at the four corners of the bottom plate 3 among the areas (container grounding areas) 35 in the can bottom (ring-shaped convex rim) 42 on the back liner at this time. A first ink layer 321 is formed in the upper region (first ink layer formation region 36) (FIGS. 5A and 5B). In the packaging boxes 1 stacked in a plurality of stages, the load is most applied to the container grounding area 35. In particular, when shaking or the like occurs during transportation, the container grounding area 35 at least one of the container grounding areas 35 at the four corners is the most. A load is applied. For this reason, the first ink layer 321 is formed in the first ink layer forming region 36 that faces the container grounding region 35 at the four corners, so that shaking or the like has occurred during transportation in a state of being stacked in a plurality of stages. In addition, it is possible to prevent the collapse of the load due to the frictional force between the anti-slip resin layer 24 on the top plate 2 and the anti-slip resin layer 34 on the first ink layer 321. The area of each first ink layer 321 located at the four corners of the bottom plate 3 can be 35% or more of the area of one container grounding region 35.

  The second ink layer 322 is a region different from the first ink layer formation region 36 and is formed in the second ink layer formation region 37 including the center (geometric center) of the front liner of the bottom plate 3. (See FIG. 7). The second ink layer forming area 37 is a substantially rectangular area in which 16 container-packed drinks out of 24 container-packed drinks arranged in 4 rows × 6 columns are arranged in 4 rows × 4 columns. The region may be a corresponding region, and is preferably a region located in the center of the bottom plate 3 and corresponding to a substantially rectangular region in which the packaged beverages are arranged in 4 rows × 4 columns (see FIG. 7A). ). The second ink layer formation region 37 is a region that does not overlap with the first ink layer formation region 36 among regions corresponding to regions where 16 packaged beverages are arranged in 4 rows × 4 columns. (See FIG. 7B).

  The second ink layer 322 is preferably formed in the second ink layer formation region 37 so as to overlap the center (geometric center) of the front liner of the bottom plate 3.

  When packaging boxes 1 containing container-packed beverages are stacked in a plurality of stages on a pallet, the packaging boxes 1 are generally stacked so as not to be stacked in a bar. For example, the packaging boxes 1 are arranged on the pallet as shown in FIG. 8A, and the packaging boxes 1 are arranged thereon as shown in FIG. 8B. When the packaging boxes 1 are stacked in a plurality of stages in this manner, the second ink layer 322 is formed at the above position (position overlapping the center of the front liner of the bottom plate 3), so that the bottom of the upper packaging box 1 is formed. The anti-slip resin layer 34 on the two adjacent first ink layers 321 on the face plate 3 and the anti-slip resin layer 34 on the second ink layer 322 are anti-slip on the top plate 2 of the lower packaging box 1. The resin layer 24 comes into contact. Therefore, it is possible to more effectively prevent load collapse due to shaking or the like during transportation in a state of being stacked in a plurality of stages.

  The second ink layer 322 may be formed so as to overlap the region on the front liner facing the container grounding region 35 in the second ink layer forming region 37, as shown in FIG. Further, it may be formed so as not to overlap a region on the front liner facing the container grounding region 35. The shape of the second ink layer 322 may be a substantially square shape as in the present embodiment (see FIG. 5A), or may be a substantially circular shape as shown in FIG. Any other shape may be used.

  In the present embodiment, each of the first ink layers 321 located at the four corners of the bottom plate 3 and the second ink layer 322 located substantially at the center of the bottom plate 3 are not continuous (the ink layer 321 therebetween). However, the present invention is not limited to such a mode, and at least one first ink layer 321 and second ink layer 322 may be continuous.

  The bottom plate 3 preferably has an area where neither the first ink layer 321 nor the second ink layer 322 is formed. As will be apparent from the examples described later, a case where an ink layer is formed on the entire surface of the bottom plate 3 and a region where neither the first ink layer 321 nor the second ink layer 322 is formed on the bottom plate 3. The anti-slip performance is almost the same as in the case where there is. For this reason, the bottom plate 3 has a region where neither the first ink layer 321 nor the second ink layer 322 is formed, which is caused by the amount of ink material used to form the ink layer on the bottom plate 3. The increase in the manufacturing cost of the packaging box 1 to be performed can be suppressed. Specifically, the total area of the first ink layer 321 and the second ink layer 322 can be 70% or less, preferably 50% or less with respect to the area of the bottom plate 3.

  According to the packaging box 1 according to the present embodiment as described above, since the first ink layer 321 is formed in the predetermined areas (first ink layer forming areas 36) at the four corners of the bottom plate 3, the packaging box 1 The base resin layer 33 and the anti-slip resin layer 34 formed on the first ink layer 321 are soaked in the cardboard 31 even if the basis weight is reduced as the thickness of the cardboard constituting the (bottom plate 3) is reduced. Can be prevented. Therefore, the smoothness of the anti-slip resin layer 34 at the four corners (on the first ink layer 321) of the bottom plate 3 can be improved. As a result, when such packaging boxes 1 are transported in a state where they are stacked in a plurality of stages, it is possible to prevent the collapse of the cargo due to shaking or the like.

  In particular, since the second ink layer 322 is formed in the second ink layer forming region 37, when the packaging box 1 is stacked in a plurality of stages, the two first first plates in the bottom plate 3 of the upper packaging box 1 are used. The three portions of the anti-slip resin layer 34 on the ink layer 321 and the anti-slip resin layer 34 on the second ink layer 322 are in contact with the upper surface plate 2 of the lower packaging box 2, so that shaking during transportation, etc. It is possible to more effectively prevent the collapse of the load that may occur.

  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 above embodiment, the first ink layer 321 has a substantially circular shape. However, the present invention is not limited to such a mode, and for example, as shown in FIGS. The shape may be a substantially square shape, a substantially triangular shape, a star shape, a plurality of dot shapes, a substantially L shape, a wavy shape, or the like.

  In the above embodiment, the first ink layer 321 is formed in the first ink layer formation region 36 (see FIG. 5), but a part of each first ink layer 321 is in each first ink layer formation region 36. As long as the first ink layer 321 is formed in the first ink layer 321, the first ink layer 321 partially overlaps the first ink layer formation region 36, and the other part is the first ink layer. It may be formed so as to protrude from the layer formation region 36 (see FIGS. 6B and 6E). In this case, a portion of the first ink layer 321 that protrudes from the first ink layer formation region 36 may be formed in the second ink layer formation region 37.

  In the said embodiment, it has the bending connection pieces 15 and 16 which connect the side plates 4 and 5 and the inner flaps 13 and 14, respectively, Thereby, the packaging box 1 which concerns on the said embodiment is the top plate 2 (or bottom). The planar shape viewed from the face plate 3) side has an octagonal shape with corners cut off, but the present invention is not limited to such an embodiment, and has bent connecting pieces 15 and 16. The planar shape seen from the top surface plate 2 (or bottom surface plate 3) side in which the inner flaps 13 and 14 are directly connected to the edge of the side plates 4 and 5 may have a square shape. . The packaging box 1 may be an A-type packaging box.

  In the above embodiment, the first ink layer 321 is in the first ink layer formation region 36 located at the four corners of the bottom plate, and the second ink layer 322 is in the second ink layer formation region 37 located in the approximate center of the bottom plate. Although formed, the present invention is not limited to such an embodiment. For example, the second ink layer 322 may not be formed.

  In the said embodiment, although demonstrated taking the case of the packaging box 1 which accommodates the 24 can container drinks arranged in 4 rows x 6 columns, this invention is limited to such an aspect. Instead, it may be a packaging box in which four sets of multipack packaging boxes for packaging six canned beverages are stored.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated further in detail, this invention is not limited to the following Example etc. at all.

[Test Example 1] Slip angle measurement test [Example 1]
Five packaging boxes 1 (packaging boxes 1 assembled from the unfolded state shown in FIG. 1) for packaging 24 350 mL cans of beer (6 packs × 4) were produced. In each packaging box 1, a circular first ink layer 321 is formed in the first ink layer formation region 36 at the four corners of the bottom plate 3, and a square second ink layer is formed in the second ink layer formation region 37. 322 was formed (see FIG. 5A). The area of each first ink layer 321 was set to 35% of the area of one container grounding region 35. The total area of the first ink layer 321 and the second ink layer 322 is 40% of the total area of the bottom plate 3. Furthermore, the packaging box 1 was produced using corrugated cardboard with a basis weight of 120 g / m ² . Furthermore, in the slip angle measurement test, when measuring the slip angle of each packaging box 1 as a test sample, the lower packaging box (the one in the unfolded state shown in FIG. 1) is positioned at the lower stage of each packaging box 1. An assembled packaging box in which an ink layer, a base resin layer, and an anti-slip resin layer are formed on the entire surface of the upper plate was also produced.

  A lower packaging box is placed on the inclined plate of the sliding test device having an inclined plate inclined at a predetermined speed, and each packaging box 1 as a test sample is placed on the bottom plate 3 of the packaging box 1. They were stacked by sticking so that the upper plate of the lower packaging box was brought into contact. Then, under the conditions of room temperature of 23 ° C. and relative humidity of 50%, the inclined plate is gradually inclined so that one short side is located below and the other short side is located above, and stacked in an upper stage. The angle (slip angle) at which the packaging box 1 was started to slide was measured.

  The above sliding angle is measured 5 times for each packaging box 1 in total, 25 times in total, and the arithmetic average value (Av), maximum value (MAX) and minimum value (MIN) of the measured values of the 25 sliding angles are obtained. It was. The results are shown in Table 1. In Table 1, the arithmetic average value (Av), maximum value (MAX), and minimum value (MIN) of the slip angle are expressed as relative values when those values in Comparative Example 1 described later are set to “100”. ing.

[Example 2]
The area of each first ink layer 321 is 183% of the area of one container grounding region 35, and the total area of the first ink layer 321 and the second ink layer 322 is 50% of the total area of the bottom plate 3. Otherwise, packaging box 1 (5 boxes) was produced in the same manner as in Example 1, and the sliding angle was measured. The results are shown in Table 1.

Example 3
The area of each first ink layer 321 is 311% of the area of one container grounding region 35, and the total area of the first ink layer 321 and the second ink layer 322 is 59% of the total area of the bottom plate 3. Otherwise, packaging box 1 (5 boxes) was produced in the same manner as in Example 1, and the sliding angle was measured. The results are shown in Table 1.

Example 4
The shape of the first ink layer 321 is substantially triangular as shown in FIG. 6B, the area of each first ink layer 321 is 342% of the area of one container grounding region 35, and the first ink layer 321 and the second ink layer 321 A packaging box 1 (five boxes) was produced in the same manner as in Example 1 except that the total area of the ink layer 322 was 61% of the total area of the bottom plate 3, and the sliding angle was measured. The results are shown in Table 1.

Example 5
The shape of the first ink layer 321 is substantially L-shaped as shown in FIG. 6E, the area of each first ink layer 321 is 281% of the area of one container grounding region 35, and the first ink layer 321 and the first ink layer 321 A packaging box 1 (five boxes) was produced in the same manner as in Example 1 except that the total area of the two ink layers 322 was 57% of the total area of the bottom plate 3, and the sliding angle was measured. The results are shown in Table 1.

Example 6
A packaging box 1 (5 boxes) is produced in the same manner as in Example 1 except that the second ink layer 322 is not formed (the total area of the first ink layer 321 is 3% of the total area of the bottom plate 3). The slip angle was measured. The results are shown in Table 1.

[Comparative Example 1]
A packaging box 1 (5 boxes) was produced in the same manner as in Example 1 except that the first ink layer 321 and the second ink layer 322 were not formed, and the slip angle was measured. The results are shown in Table 1.

[Comparative Example 2]
A packaging box 1 (5 boxes) is produced in the same manner as in Example 1 except that the first ink layer 321 is not formed (the total area of the second ink layer 322 is 37% of the total area of the bottom plate 3). The slip angle was measured. The results are shown in Table 1.

[Reference Example 1]
A packaging box 1 (5 boxes) was produced in the same manner as in Example 1 except that the first ink layer 321 was formed on the entire surface of the bottom plate 3, and the sliding angle was measured. The results are shown in Table 1.

  As shown in Table 1, it was confirmed that the anti-slip performance of the packaging boxes of Examples 1 to 6 was comprehensively improved as compared with the packaging box of Comparative Example 1. On the other hand, as in Comparative Example 2, in the packaging box in which the first ink layer is not formed and only the second ink layer is formed, the anti-slip performance is inferior to the packaging box of Comparative Example 1. became. From this, it was found that the anti-slip performance can be improved by forming the first ink layers at the four corners of the bottom plate of the packaging box.

  In addition, as in the packaging box of Reference Example 1, by forming an ink layer on the entire surface of the bottom plate, it is possible to prevent the slip-proof resin layer from penetrating into the cardboard, thereby improving the slip-proof performance. Can be made. However, as the amount of ink material used to form the ink layer increases, the manufacturing cost of the packaging box increases. On the other hand, the anti-slip performance of the packaging box of Reference Example 1 was substantially equivalent to the anti-slip performance of the packaging box of Example 1. Therefore, as in Example 1, by forming the first ink layer and the second ink layer in a partial region of the bottom plate, sufficient anti-slip performance can be achieved without increasing the manufacturing cost of the packaging box. It turned out that he could play.

  The packaging box of the present invention is for packaging beverage cans (contained beverages) such as canned beer, canned sparkling liquor, canned chuhai, canned juice, canned coffee, canned tea, canned green tea together. Useful as a packaging box.

1 ... Packing box 2 ... Top plate (upper surface)
3 ... Bottom plate (bottom)
31 ... Corrugated cardboard 321 ... First ink layer 322 ... Second ink layer 34 ... Anti-slip resin layer (anti-slip layer)
35 ... Container grounding area 36 ... First ink layer forming area 37 ... Second ink layer forming area

Claims (9)

A cardboard packaging box for storing a plurality of packaged beverages,
At least a substantially rectangular top surface portion and bottom surface portion, and four side surface portions constituting the side wall of the packaging box,
The bottom surface portion includes at least a first ink layer provided at least in a first ink layer forming region on a front liner of a corrugated cardboard constituting the bottom surface portion, and an anti-slip layer provided over the entire surface of the front liner. Are stacked in this order,
The back liner of the corrugated cardboard that constitutes the bottom portion has a plurality of container grounding areas that contact the bottom of the container-packed beverage when the container-packed beverage is stored in the packaging box,
The first ink layer forming region is a region on the front liner of the corrugated cardboard constituting the bottom surface portion, facing the container grounding region located at the four corners of the bottom surface portion of the plurality of container grounding regions,
A cardboard packaging box, wherein at least the first ink layer is provided in each first ink layer forming region.   A second ink layer is further formed in a second ink layer forming region, which is a predetermined region including the center of the front liner of the corrugated cardboard constituting the bottom surface portion and is different from the first ink layer forming region. The cardboard packaging box according to claim 1, wherein The corrugated cardboard packaging box is a corrugated cardboard packaging box for storing the 24 packed beverages arranged in 4 rows × 6 columns,
The second ink layer forming region is a region corresponding to a region in which 16 container-packed beverages of the 24 container-packed beverages are arranged in 4 rows x 4 columns. 2. A cardboard packaging box according to 2.   4. The cardboard packaging box according to claim 2, wherein the second ink layer is formed so as to overlap a center of a cardboard surface liner constituting the bottom surface portion.   5. The cardboard packaging box according to claim 2, wherein the first ink layer and the second ink layer are not continuous.   5. The cardboard packaging box according to claim 2, wherein at least one of the first ink layer and the second ink layer is continuous.   The area of each said 1st ink layer is 35% or more of the area of one said container grounding area | region, The cardboard packaging box in any one of Claims 1-6 characterized by the above-mentioned. Cardboard packaging box according to claim 1, basis weight of the cardboard constituting the bottom portion, characterized in that it is 120-140 g / m ^2.   A packaged product in which a plurality of packaged beverages are stored in the cardboard packaging box according to claim 1.

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