JP7389681B2 - Multipack packaging materials and can assembly packaging - Google Patents

Description

The present invention relates to a multi-pack packaging material made of paperboard for packaging a plurality of cans so that they can be carried together, and a can assembly packaging using the same.

As a prior example of a multi-pack packaging material, Patent Document 1 below (paragraphs [0025]-[0028], Figure 4) describes a method in which six cans C are lined up in two rows of three cans each, as shown in Figure 8. There is a description of paperboard products that are collectively packaged in different states. This multi-pack packaging material has a structure in which side plates 52 are connected to both sides of a top plate 51 via a ridge line m, and a bottom plate 53 is connected to each side plate 52 via a ridge line n.

The top plate 51 and the side plates 52 and bottom plate 53 on both sides are bent into a sleeve shape along the ridge lines m and n, and the can C is surrounded with the length direction extending between the opening surfaces at both ends. One bottom plate 53 is provided with an insertion piece 54 and an engagement piece 54a, and the other bottom plate 53 is provided with an insertion hole 55 and an engagement hole 55a. By inserting the insertion piece 54 into the insertion hole 55, the bottom plates 53 are connected to each other.

Gussets 56 are provided at the upper portions of both ends facing the opening surfaces, and bottom fixing pieces 57 are formed on the bottom plate 53 to correspond to the bottom surfaces of the respective cans C and are cut and raised from the bottom plate 53. The gusset 56 is bent inward to extend along the upper outer periphery of the can C at both ends facing the opening surface, and the bottom fixing piece 57 is bent at the base and intermediate portions to engage with a recess in the bottom of the can C.

A punch hole 58 is formed at the boundary between the top plate 51 and the side plate 52, and a punch hole 59 is formed at the boundary between the side plate 52 and the bottom plate 53, corresponding to the can C. The outer periphery of the bottom of the can C fits into the hole 59, and the can C is held in a predetermined position.

The top plate 51 is formed with a pair of semicircular notches 60 in order to form a finger insertion hole for transportation by being pushed in, and also to be cut to take out the can C when opening. , two rows of cuts 61 extending between both ends are provided.

In the above-mentioned multi-pack packaging material, as schematically shown in _FIG . is set small so as to tighten the outer periphery of the top of the can C. To be more specific, the width dimension _W3 is set smaller than the sum of the top outer diameter and the shoulder protrusion of the two rows of cans C.

With this configuration, the holding force of the can C is strong, but if the can C is accidentally dropped during transportation, the portion along the ridge line m of the boundary between the top plate 51 and the side plate 52 is likely to be torn near the punched hole 58. The presence of the punch hole 58 imposes restrictions on the design of printing patterns and the like.

On the other hand, as shown in FIG. 10, Patent Document 2 listed below describes a multi-pack packaging material that collectively packs six cans C in two rows of three cans each, similar to the above one. However, in this multi-pack packaging material, there is no hole corresponding to the hole 58 formed at the boundary between the top plate 51 and the side plate 52 of the multi-pack packaging material.

As schematically shown in FIG. 11, the width W ₄ of the top plate 51 is set so that the top outer periphery of the cans C lined up in two rows is along the ridge line m on both sides. The width dimension W of 51 is set larger than ₃ .

With this configuration, there is no hole at the boundary between the top plate 51 and the side plate 52, so even if it falls unexpectedly during transportation, it will not be easily torn along the ridge line m, and the design will not be restricted. Since the holding force of the can C is weak, the can C is easily moved inside due to bending during transportation, and when the can C is greatly deformed due to impact such as dropping, the can C is likely to pop out from the opening surface.

JP2017-193347A JP2018-52520A

As mentioned above, with conventional multi-pack packaging materials, increasing the holding power of cans weakens their breaking strength when dropped, and also limits the design, which reduces the appeal during display and reduces the If the breaking strength is increased, the degree of freedom in design is ensured, but there is a problem in that the holding force of the can is weakened. Therefore, from the perspective of distribution and sales of beverages, there is a demand for packaging materials that satisfy these contradictory functions.

Therefore, the present invention provides a multi-pack packaging material that can tightly tighten and securely hold stacked cans, is resistant to tearing when dropped, and is not subject to design restrictions such as printing patterns, and a can assembly package using the multi-pack packaging material. The challenge is to provide the following.

In order to solve the above-mentioned problems, this invention has side plates connected to both sides of a top plate via ridge lines, bottom plates connected to both side plates respectively via ridge lines, and an opening surface at both ends. Has a facing gusset,
A multi-pack packaging material in which the top plate, side plates on both sides, and bottom plate are bent into a sleeve shape along the ridge line so as to surround the accumulated cans, and the cans are prevented from coming off from the opening surfaces at both ends by bending the gussets. In,
The ridgeline of the top plate and the side plates on both sides is such that, among three or more cans arranged in series in the length direction between the opening surfaces at both ends, the middle part corresponding to the can on the center side corresponds to the can on both end sides. It is bent so as to protrude from the end side,
The width dimension of the top plate, which is the interval between the end sides of the ridge lines on both sides, is set smaller than the width dimension, which is the interval between the middle parts of the ridge lines on both sides. The outer periphery of the top was tightened.

Further, the ridge lines of the top plate and the side plates on both sides are inclined in opposite directions with respect to the end side parts corresponding to the cans on both end sides, so that the middle part corresponding to the can on the center side forms a V-shape. It was made up of straight lines.

Alternatively, the ridge lines of the top plate and the side plates on both sides are curved so that the middle part corresponding to the can on the center side projects in an arc shape with respect to the end side parts corresponding to the cans on both end sides. .

Furthermore, the ridge lines of the top plate and the side plates on both sides are straight lines inclined in opposite directions with respect to the end sides corresponding to the cans on both end sides, so that the middle part corresponding to the can on the center side forms a trapezoid shape. and a straight line sandwiched between them and parallel to the end side.

Further, the ridge lines of the top plate and the side plates on both sides form a V-shape as a whole, with a midpoint corresponding to the can on the center side being sandwiched between the edge lines, and end side portions corresponding to the cans on both end sides being sandwiched between them. They were assumed to be inclined in opposite directions.

Furthermore, a notch is made in the center of the ridgeline of the top plate and the side plates on both sides to absorb deformation when the can is dropped, at the part where the outer periphery of the top of the can on the center side comes into contact.

In addition, there is also a can assembly package in which cans are packaged using such a multi-pack packaging material, in which six cans are separated into two sets of three each by the top plate, side plates on both sides, and bottom plate of the multi-pack packaging material. The middle part of the ridge line of the top plate and both side plates corresponds to the can in the center of each row, and the end side corresponds to the cans on both ends of each row. The idea was to provide a can in which the outer periphery of the top of the can on both ends is tightened at the portions along the can.

In the multi-pack packaging material according to the present invention, the intermediate portions of the ridge lines on both sides of the top plate are bent, and the outer circumferences of the tops of the cans on both ends are tightened at the portions along the end sides of the ridge lines, and the height of the side plate is The height is lowered corresponding to the middle part of the ridgeline, and the can on the center side is tightened from above and below by the top plate and the bottom plate, so the holding force of the can is strengthened.

This prevents the can from moving inside the packaged state and from popping out from the opening surfaces at both ends due to deformation when dropped.

Furthermore, since there is no hole for fitting the can at the boundary between the top plate and the side plate, it is less likely to be torn when dropped, and the design of the printed pattern etc. is not restricted.

Then, using such multi-pack packaging material, six cans are collectively packaged in two rows of three cans each, and both ends are separated along the edge of the ridgeline of the top plate and both side plates. If the top outer periphery of the side cans is tightened, there will be little flexing during transportation, making it difficult for the six cans to move inside, and preventing the cans from flying out from the opening surface due to breakage when dropped.

A perspective view showing a packaging state of a multipack packaging material according to an embodiment of the present invention Diagram showing the blank as above A plan view of the top plate in the packaged state as above. A schematic plan view showing the relationship between the ridge lines on both sides of the top plate and the can. A schematic plan view showing another form of the above ridgeline A schematic plan view showing another form of the above ridgeline A schematic plan view showing another form of the above ridgeline A perspective view showing the packaging state of the multipack packaging material described in Patent Document 1 A schematic plan view showing the relationship between the ridge lines on both sides of the top plate and the can. A perspective view showing the packaging state of the multipack packaging material described in Patent Document 2 A schematic plan view showing the relationship between the ridge lines on both sides of the top plate and the can.

Embodiments of the present invention will be described below based on the accompanying drawings.

The multi-pack packaging material shown in Figure 1 is arranged in two rows of three cans each with the length extending between the openings at both ends so that six cans C containing beverages such as beer can be carried together. It is intended for collective packaging and is formed from a waterproof paperboard blank as shown in FIG.

In this blank, side plates 2 are connected to both sides of a top plate 1 via a ridgeline a, and a bottom plate 3 is connected to each side plate 2 on both sides via a ridgeline b.

An insertion piece 4 and an engagement piece 4a are provided on one bottom plate 3, and an insertion hole 5 and an engagement hole 5a are provided on the other bottom plate 3, respectively. The insertion hole 5 has a slit shape, and a push-in piece 5b is formed by cutting facing the insertion hole 5. Further, the other bottom plate 3 is provided with a confirmation window 5c for confirming the expiration date, manufacturing number, etc. printed on the bottom surface of the can C.

A fold line forming the oblique side of each corner of the top plate 1 and a fold line forming both end sides of the side plate 2 closer to the top plate 1 are connected via a gusset 6. The gusset 6 has a diagonal crease line that is valley-folded during packaging.

From the bottom plate 3 to the lower portion of the side plate 2, three bottom fixing pieces 7 are formed by cutting, corresponding to the bottom surface of each can C. The bottom fixing piece 7 is folded up along the fold line of the base and middle portions during packaging, and a hole 8 is formed at the extraction mark.

A pair of finger presses 9 are formed by cutting into the top plate 1 to form a finger hole for transportation. Two zipper-shaped cut rows 10 in which hook-shaped cuts are intermittent are provided.

Further, in the middle part _a1 of the ridge line a, a notch 11 is made at a position where the outer periphery of the top of the can C on the center side comes into contact in order to absorb deformation and prevent the gusset 6 from breaking when the can C falls.

As shown in FIGS. 3 and 4, when the cans C are stacked and packaged, the ridge line a of the top plate 1 and the side plates 2 on both sides corresponds to one of the three cans C arranged in series in the length direction. An intermediate portion a ₁ corresponding to the can C on the center side is bent so as to protrude from end side portions a ₂ corresponding to the cans C on both ends.

In this example, the intermediate portion _a1 of the ridgeline a is formed of a straight line inclined in opposite directions with respect to the end side portions _a2 on both end sides so as to form a V-shape.

In this way, since the middle part _a1 of the ridge line a is curved, the top plate 1 is closer to the end side of the ridge line a on both sides than the width dimension _W1 , which is the interval between the middle part _a1 of the ridge lines a on both sides. The width dimension _W2, which is the interval between portions _a2 , is smaller.

Specifically, the width dimension W ₁ is set to be approximately equal to the sum of the top outer diameter d and the shoulder protrusion amount s of the two rows of cans C at the maximum point, and the width dimension W ₂ is set to be approximately equal to the sum of the top outer diameter d and the shoulder protrusion amount s of the two rows of cans C. It is set smaller than the sum of the top outer diameter d and the shoulder protrusion amount s of the can C.

In order to collectively package six cans C using the multi-pack packaging material made of the above blanks, as shown in Figure 1, the top plate 1 is placed over the top of the cans C arranged in two rows of three cans. , bend the side plates 2 on both sides downward, and bend the bottom plate 3 inward. Then, the engagement piece 4a and the engagement hole 5a are engaged, and the insertion piece 4 is inserted into the insertion hole 5, so that the bottom plates 3 are connected to each other and maintained in a sleeve shape.

Also, bend the gusset 6 inward to align it with the upper outer periphery of the can C facing the opening surface, bend the bottom fixing piece 7 along the crease line of the base and middle part, and attach the tip of the bottom fixing piece 7 to the bottom of the can C. engage the periphery of the recess. Further, by fitting the bottom outer periphery of the can C into the extraction hole 8 and holding the lower part of the can C, the can C is prevented from coming off from the opening surfaces at both ends.

When packaged in this way, the top outer periphery of the can C on both ends is tightened at the portion along the end side _a2 of the ridge line a, and the height of the side plate 2 is lowered corresponding to the middle part _a1 of the ridge line a. The can C on the center side is tightened from above and below by the top plate 1 and the bottom plate 3, and the bottom fixing piece 7 reliably bends in a predetermined direction and engages with the recess in the bottom of the can C, so that the can C is held. Power is strengthened.

This prevents the can C from moving inside the packaged state and from popping out from the opening surfaces at both ends due to deformation when dropped.

Furthermore, since there is no hole for fitting the can C into the boundary between the top plate 1 and the side plate 2, the can is less likely to be torn when dropped, and the design of the printed pattern etc. is not restricted.

In the above embodiment, the middle part _a1 of the ridge line a is V-shaped, but as shown in FIG. 5, the middle part _a1 of the ridge line a corresponds to the can C on both end sides It may be a curved line extending in an arc shape with respect to the end side portion _a2 .

In addition, as shown in FIG. 6, the middle part _a1 of the ridge line a is sandwiched between a straight line inclined in the opposite direction to the end side part _a2 so as to form a trapezoidal shape, and the end side part a1 is sandwiched between them. It may also consist of a straight line parallel to _a2 .

In addition, as shown in FIG. 7, the ridge line a has a V-shape as a whole, and corresponds to the cans C at both ends with one point in the middle _a1 corresponding to the can C at the center. The end side portions _a2 may be inclined in opposite directions.

Further, in the above embodiment, the upper part of the can C is held by the gusset 6, and the lower part of the can C is held by the bottom fixing piece 7, but the upper part and the lower part of the can C are connected to the top plate 1 and the bottom plate. The above structure regarding the shape of the ridge line a and the width of the top plate 1 can also be applied to a multi-pack packaging material of a type that is held by gussets 6 that are connected to each other.

1 Top plate 2 Side plate 3 Bottom plate 4 Insert piece 4a Engagement piece 5 Insertion hole 5a Engagement hole 5b Push piece 5c Confirmation window 6 Gusset 7 Bottom fixing piece 8 Hole 9 Finger push piece 10 Cut row 11 Cut C Can a Ridgeline a ₁ Middle part a _2nd side part b Ridgeline W ₁ , W ₂ Width dimension

Claims (7)

Side plates (2) are connected to both sides of the top plate (1) via ridge lines (a), bottom plates (3) are connected to each side plate (2) on both sides via ridge lines (b), and both ends has a gusset (6) facing the opening surface of the
The top plate (1), the side plates (2) on both sides, and the bottom plate (3) are bent into a sleeve shape along the ridge lines (a, b) so as to surround the accumulated cans (C), and the gusset ( 6) In the multi-pack packaging material that prevents the can (C) from coming off from the opening surface at both ends by bending,
The ridgeline (a) of the top plate (1) and the side plates (2) on both sides is the center can (C) of three or more cans (C) arranged in series in the length direction between the opening surfaces at both ends. ) is bent so as to protrude from the end side parts ( _{a 2 )} corresponding to the cans (C) on both ends,
The above-mentioned top plate (1) has a width dimension (W 1 ) that is the interval between the middle parts (a ₁ ) of the ridge lines (a) on both sides, and a width dimension (W ₁ ) that is the interval between the end sides (a ₂ ) of the ridge lines (a) on both sides. A multi-pack packaging material characterized in that the width dimension (W ₂ ) is set small, and the outer periphery of the top of the can (C) on both ends is tightened at the portion along the end side (a ₂ ). The ridgelines (a) of the top plate (1) and the side plates (2) on both sides are arranged so that the middle part (a ₁ ) corresponding to the can (C) on the center side forms a V-shape. The multi-pack packaging material according to claim 1, characterized in that it consists of straight lines inclined in opposite directions with respect to the end side (a ₂ ) corresponding to C). The ridgeline (a) of the top plate (1) and the side plates (2) on both sides is such that the middle part (a ₁ ) corresponding to the can (C) on the center side is the end side part corresponding to the can (C) on both end sides. The multi-pack packaging material according to claim 1, characterized in that the multi-pack packaging material has a curved line extending in an arc shape with respect to (a ₂ ). The ridgeline (a) of the top plate (1) and the side plates (2) on both sides are arranged so that the middle part (a ₁ ) corresponding to the can (C) on the center side forms a trapezoid. ) and _{a straight line parallel to the end side (a 2 )} sandwiched between them. Multipack packaging materials listed in . The ridgeline (a) of the top plate (1) and the side plates (2) on both sides have one intermediate point (a ₁ ) corresponding to the can (C) on the center side so that the ridgeline (a) forms a V-shape as a whole. 2. The multi-pack packaging material according to claim 1, wherein the end side portions (a ₂ ) corresponding to the cans (C) at both ends thereof are inclined in opposite directions. The middle part (a 1 ) of the ridgeline (a) of the top plate (1) and the side plates ( ₂ ) on both sides, where the outer periphery of the top of the can (C) on the center side comes into contact, absorbs deformation when dropped. The multi-pack packaging material according to any one of claims 1 to 5, characterized in that the multi-pack packaging material is provided with a notch (11) that makes the cut. A can assembly package in which cans (C) are packaged using the multi-pack packaging material according to any one of claims 1 to 6, comprising a top plate (1) and side plates on both sides (1) of the multi-pack packaging material. 2) and the bottom plate (3) surround the six cans (C) in two rows of three each, and the middle part of the ridge line (a) of the top plate (1) and the side plates (2) on both sides. (a ₁ ) corresponds to the can (C) in the center of each row, the end side (a ₂ ) corresponds to the cans (C) on both ends of each row, and the end side (a ₂ ) corresponds to the can (C) on both ends of each row. A can assembly package characterized in that the outer periphery of the top of the can (C) on both end sides is tightened along the sides.

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