JP2002002684A - Packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging box capable of attaining a sufficient pressure- resistant strength without increasing its cost even if a packaged item can be displayed while a part of its barrel part is being cut and removed and further facilitating a releasing work for a displaying released portion when the packaged item is to be displayed. SOLUTION: There is provided a line (m) which can be cut and broken and further extends from a lower end edge near one side of a first side plate 3 toward a top plate 4, crosses the top plate 4 in a substantially inverted U-shape form and extends downwardly to a lower end edge near the other side of the first side plate 3. A part of a barrel part 16 is cut through the breakable line (m) to attain a displaying released part 14 enabling the packaged item stored in the barrel part 16 to be exposed and displayed. Since the breakable line (m) is arranged without crossing the first side plate 3 in a lateral direction, it is possible to arrange the displaying released part 14 without reducing a pressure-resistant strength of the first side plate 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a packaging box formed of corrugated paperboard.

[0002]

2. Description of the Related Art Conventionally, packaging is made by assembling corrugated paperboard in which four rectangular side plates and an adhesive piece are connected in one direction via a fold line, and a pair of flaps are provided on both sides of each side plate. Boxes are known. This type of packaging box is generally referred to as a wrap-around case. Assembled by bending and bonding. Since this type of packaging box is very easily assembled and can be packaged at the same time as being assembled, an assembly and packaging operation by an automatic machine is generally employed.

[0003] By the way, in this type of packaging box, a part from the side plate to the top plate is cut off in order to display the packaged item at the time of selling the packaged item (for example, a product such as household detergent). There is known an apparatus that can be opened to expose the package. In this case,
For example, by providing a substantially annular cut-like breakable line such as a perforation or a zipper that can be continuously cut across the side plate and the top plate, and by breaking along the breakable line,
It is conceivable to cut off a part from the side plate to the top plate to form an opening for exhibition that exposes the packaged object. At this time, by providing the breakable line apart from the outer peripheral edges of the side plate and the top plate, when the open portion for display is opened, the remaining portions of the side plate and the top plate project on the outer periphery of the open portion for display. Therefore, it is possible to prevent the exposed packaged object from falling off and to maintain the state of being stored in the packaging box.

However, when an annular breakable line is provided continuously over the side plate and the top plate, a part of the breakable line crosses the side plate in the left-right direction. Therefore, when a plurality of packaging boxes are vertically stacked and a compressive load is applied to the side plate in the vertical direction, the load concentrates on a portion of the breakable line crossing the side plate in the left-right direction and the position is May be inadvertently broken.

[0005] Therefore, at the position of the breakable line crossing the side plate in the left-right direction, a break assisting material such as a cut tape is stuck on the inner surface of the side plate instead of the breakable line to thereby reduce the pressure resistance of the side plate. Improvements in strength have been made.

However, according to this configuration, in order to open the opening for display, in addition to the work of cutting the breakable line, the work of cutting the side plate by the break assisting material must be performed. There is a disadvantage that the opening operation of the opening part is troublesome. Further, the cut end after breaking by a break assisting material such as a cut tape has an extremely poor appearance, and is not suitable for display of an article to be packaged. Furthermore, the production cost of the corrugated paperboard is disadvantageously increased since a step of attaching a cut tape is required during the production of the corrugated paperboard.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned inconvenience, the present invention provides a sufficient pressure-resistant strength without increasing the cost even if a part of the body can be cut off to display the packaged object. It is another object of the present invention to provide a packaging box which can perform an opening operation of an exhibition opening portion when an article to be packaged is displayed.

[0008]

SUMMARY OF THE INVENTION The packaging box of the present invention is formed of corrugated paperboard. When the packaging box of the present invention is assembled from the corrugated paperboard, first, a first cardboard that extends in one direction from one end to the other end of the corrugated paperboard is used.
The side plate, the top plate, the second side plate, the bottom plate, and the adhesive piece are bent at right angles to each other through a fold line provided along the boundary of each plate, and then the adhesive piece is attached to the inner surface of the first side plate. A square tubular body is formed by bonding with an adhesive.

[0009] A pair of inner flaps connected to both side edges of the top plate and the bottom plate via fold lines are bent inward at right angles along the respective fold lines. A pair of outer flaps connected to both side edges of each of the first and second side plates via a fold line are bent at right angles inward along the respective fold lines to form an inner flap. Polymerized on the outer surface. At this time, each inner flap and each outer flap are bonded via an adhesive, and the body is closed.

[0010] In the packaging box of the present invention, in order to achieve the above object, a part of the trunk extending to the top plate and the first side plate is cut off along a breakable line to be housed in the trunk. A display opening for exposing the exposed packaged object so as to be displayed, the breakable line extends from a lower edge near one side of the first side plate toward the top plate, and the top plate is approximately The first side plate is provided so as to traverse in an inverted U-shape, further extend below the first side plate, and reach a lower end edge of the first side plate closer to the other side.

Since the breakable line has one end and the other end respectively reaching the lower edge of the first side plate,
The exhibition opening can be provided without crossing a part of the breakable line in the left-right direction of the first side plate. Accordingly, even when a compressive load is applied to the first side plate from above when a plurality of packaging boxes are stacked, it is possible to prevent the breakable line from being inadvertently broken, and the pressure resistance of the first side plate is sufficiently increased. And the display opening part can be provided.

Further, since the breakable line is formed from the first side plate to the top plate, when the display opening is opened, a part of the top plate is cut in a substantially inverted U-shape. If the breakable line is broken by continuously pulling down a part of the first side plate after breaking and releasing along the possible line, the exhibition opening can be easily opened in one behavior.

[0013] In the present invention, the adhesive piece may be cut off at least when cut along the breakable line.
At the overlapping position with the remaining portion formed on both sides of the side plate, at the overlapping position between both ends of the breakable line, the display opening is exposed by opening and the first side plate is exposed. It is characterized in that a continuous frame portion is formed in the remaining portion.

When a part of the body is cut along the breakable line, a part of the adhesive piece standing up along the bottom plate is exposed to form the frame. With this, even if the breakable line is cut and the first side plate is divided into right and left, the frame portion of the adhesive piece exposed on the lower edge side prevents the packaged object exposed in the display state from falling off. can do. In addition, since the adhesive piece does not have a cut when broken along the breakable line, the appearance of the frame edge of the lower edge of the open section for display is not reduced by the cut, and the cut piece is not wrapped. A display opening suitable for display of an object can be formed.

[0015]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory perspective view of the packaging box of the present embodiment, FIG. 2 is an exploded view of the packaging box shown in FIG. 1, FIG. 3 is an explanatory view showing an opening operation of an exhibition opening part, and FIG. FIG. 4B is an explanatory diagram showing a later folded state, and FIG. 4B is an explanatory diagram showing a deployed state after opening.

The packaging box 1 of the present embodiment shown in FIG.
As shown in FIG. 1, the substantially rectangular corrugated paperboard 2 is assembled. The paperboard 2 includes a first side plate 3, a top plate 4, a second side plate 5, and a bottom plate 6 connected in one direction via fold lines a, b, and c, respectively. Further, outer flaps 7, 7, 8, 8 are continuously provided at upper and lower edges of the first side plate 3 and the second side plate 5 via fold lines d, d, e, e, respectively. The inner flaps 9, 9, 10, 1 and 1 are respectively provided at the upper and lower edges of the bottom plate 6 and the bottom plate 6 through fold lines f, f, g, g.
0 is continuously provided. Further, an adhesive piece 11 is continuously provided on the right edge of the bottom plate 6 via a fold line h.

At a substantially central portion of the tip of the outer flaps 7, 7, 8, 8, a finger is inserted by a pair of cuts i, i and a fold line (or a cut line) j connecting the two cuts i, i. A part 12 is formed. On both sides of the inner flaps 9, 9, 10, 10, rupturable separation portions 13, 13 which can be ruptured via a pair of rupturable lines k, k are formed.

Further, a breakable line m is provided from the top plate 4 to the first side plate 3, and by cutting off a cuttable portion (separated piece 14 b described later) surrounded by the breakable line m. An exhibition opening 14 described later can be formed. The breakable line m is provided at the top plate 4 side at the break start portion 1.
4a, and the break start portion 14a is provided so as to be freely bent (or broken) via a fold line (or a cut line) p.

Further, when the sheet is broken along the breakable line m, a part of the top plate 4 and a part of both sides of the first side plate 3 are left around the display opening 14 in a frame shape.
(See FIG. 3) is formed. As shown in FIGS. 1 and 2, both ends of the breakable line m extend to the edge of the first side plate 3. Also, the breakable line m is the remaining parts 3a, 4a
A substantially V-shaped cut 15 for guiding the break of the fold line a along the fold line a at the boundary between the side plates 3 and 4 in FIG.
(See FIG. 4) is formed at the inner edge of the exhibition opening section 14.

The assembling of the packaging box 1 shown in FIG. 1 from the corrugated paperboard 2 formed as described above is performed by an automatic machine (not shown). That is, first, a packaged object (for example, a shampoo, a refilling detergent, etc.) is placed on the bottom plate 6, and the second packaged object is wrapped around the second packaged object.
The side plate 5, the top plate 4, and the first side plate 3 are respectively crease lines c, b,
Bend at a right angle through a. Next, the adhesive piece 11 is bent along the fold line h, polymerized on the inner surface of the first side plate 3, and bonded via the adhesive w. As a result, a square tubular body 16 (shown in FIG. 1) is formed. At this time, the adhesive w
As shown in FIG. 1, the remaining portion 3 a of the first side plate 3 is mainly used to obtain a strong adhesive force on both sides of the adhesive piece 11.
Is applied in a relatively large amount at the position corresponding to. On the other hand, the central portion of the adhesive strip 11, that is, between the breakable lines m, m on both sides of the first side plate 3 (frame portion forming portion 11a) is a relatively weak adhesive force that does not hinder the formation of the exhibition opening portion 14. It is preferable that they are adhered with each other. The frame forming section 1
1a, the separation piece 4b described later is easily peeled off, and unintentional cutting of the breakable line m is surely prevented by the load. However, in order to further reduce the cost, the frame portion is required. Non-adhesion may be performed at the forming portion 11a.

On both open sides of the body 16, the inner flaps 9, 9, 10, 10 are cut along the fold lines f, f, f, f.
g, bend inward along g, outer flaps 7,7,
8, 8 is folded along the fold lines d, d, e, e to overlap the outer surfaces of the inner flaps 9, 9, 10, 10. At this time, as shown in FIG. 1, the inner flaps 9, 9, 10, 10
The outer flaps 7, 7, 8, 8 are adhered by applying an adhesive x to the outer surface of each of the fracture separating portions 13. In this manner, both sides of the body 16 are closed by the sealing of the inner flaps 9, 9, 10, 10 and the outer flaps 7, 7, 8, 8, and at the same time as the assembly of the packaging box 1 is completed, the packaging box 1 is closed. The packaging of the article to be packaged inside is completed.

In the packaging box 1 thus formed, even if the breakable line m is provided on the body 16, a part of the breakable line m crosses the first side plate 3 in the left-right direction. Therefore, sufficient pressure resistance can be obtained.

Here, in the packaging box 1 of the present embodiment,
When the pressure strength test was conducted, the average was 549 kg (water content
8.7%). Then, although not shown, another packaging box (specifically, the lower end of the breakable line m is traversed in the left-right direction at a position higher than the lower edge of the first side plate 3,
When the compressive strength was measured for a ring having a breakable line m extending annularly from the first side plate 3 to the top plate 4), the packing box showed an average strength of 451 kg (8.6% moisture). As a result, it has been clarified that the packaging box 1 of the present embodiment has improved the strength by about 100 kg.

When a packaged product is to be displayed and sold in a store or the like, first, as shown in FIG.
The finger is inserted into the rupturable line m provided at the rupturable line m, and a part of the separation piece 14b is released along the rupturable line m to open the top plate 4.

Subsequently, the separation piece 14b released from the top plate 4
Is pulled downward, and as shown in FIG. 3 (b), the cut-off pieces 14b are cut off at once. By doing so, the exhibition opening 14 is formed in a part of the body 16. By forming the display opening 14, the packaged object can be exposed, and the packaged object can be displayed and taken out. At this time, the frame portion forming portion 11a of the adhesive piece 11 is exposed, and the remaining portions 3a, 4
It is a frame-shaped frame portion that is continuous with a, thereby preventing the packaged object from falling off.

Next, when the packaging box 1 from which the article to be packaged is taken out is flattened for disposal or recycling, referring to FIG. 1, the finger insertion portions 1 of the outer flaps 7 and 8 are referred to.
Insert fingers into 2 and pull outward flaps 7, 8 outward. As a result, the break separation portions 13 of the inner flaps 9 and 10 bonded to the outer flaps 7 and 8 via the adhesive x are separated from the inner flaps 9 and 10 via the breakable line k and both sides of the body 16 Is released.

Then, from this state, as shown in FIG. 4A, it can be folded flat. Further, the fold line b at the boundary between the remaining portions 4a and 5a
By tearing, as shown in FIG. 4B, the deployed state can be extremely easily and quickly made.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of a packaging box according to an embodiment of the present invention.

FIG. 2 is a development view of the packaging box shown in FIG.

FIG. 3 is an explanatory view showing an opening operation of an exhibition opening section.

FIG. 4A is an explanatory view showing a folded state after opening,
(B) is an explanatory view showing a deployed state after opening.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Packaging box, 2 ... Corrugated paperboard, 3 ... First side plate, 4 ... Top plate, 3a, 4a ... Remaining part, 5 ... Second side plate, 6 ... Bottom plate, 7,
8: outer flap, 9, 10: inner flap, 11: adhesive piece, 11a: frame portion forming portion (frame portion), 14: open portion for display, m: breakable line, 16: trunk portion.

Claims (2)

[Claims] 1. A first side plate, a top plate, a second side plate, a bottom plate, and an adhesive piece formed of corrugated paperboard and connected in one direction from one end to the other end of the corrugated paperboard. The adhesive pieces are bent at right angles to each other through the provided fold lines, and the adhesive pieces are bonded to the inner surface of the first side plate via an adhesive to form a square tubular body, and each of the top plate and the bottom plate is A pair of inner flaps connected to the both side edges of the first through the fold lines are bent inward at right angles along the respective fold lines, and the first and second side plates are respectively bent at the both side edges. A pair of outer flaps connected via a fold line are bent inward at right angles along the respective fold lines and superimposed on the outer surface of each inner flap, and each inner flap and each outer flap are bonded. A packaging box that is closed by adhering through an agent and closing the body, Providing a display opening for exposing a packaged product stored in the torso by cutting off a part of the torso along the top plate and the first side plate along a rupturable line; The breakable line extends from the lower edge near one side of the first side plate toward the top plate, traverses the top plate in a substantially inverted U-shape, and further extends downward below the first side plate. A packaging box provided up to a lower edge of the first side plate closer to the other side. 2. The adhesive piece is adhered at a position where it is overlapped with the remaining portions formed on both sides of the first side plate at least when cut off along the breakable line, and between the both ends of the breakable line. 2. The packaging box according to claim 1, wherein in the overlapping position, the display opening is exposed by being opened to form a continuous frame with the remaining portion of the first side plate.