JP3973514B2 - Cardboard box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a corrugated cardboard box and a loading method thereof, and more particularly, to a corrugated cardboard box suitable for use in storing an absorbent article such as a compressed disposable diaper and a loading method thereof.
[0002]
[Prior art and problems to be solved by the invention]
When storing or transporting a cardboard box containing products in a warehouse, it is stacked as high as possible, so when storing and transporting, the lower cardboard cannot withstand the weight and breaks into the cardboard trunk, Deflection occurs and the cardboard box is supported by the rigidity of the product itself. For example, in the technique of Japanese Patent Application Laid-Open No. 2001-72044, when a line 31 that easily buckles is formed in the vicinity of the height of the top and bottom flap ruled lines on the four side plates that form the trunk portion, A buckling is caused at the line 31 and a load is directly applied to the contents to prevent the body from being bent.
[0003]
However, when packing products in a compressed state, such as absorbent articles such as disposable diapers, they are compressed in the horizontal direction of the box and will fit neatly. Since it is difficult to accommodate the product together, a gap of several centimeters to several tens of centimeters is formed in the upper part of the cardboard box, and when the corrugated board body is bent as in the prior art, the product itself It is difficult to put a load on In addition, when the cardboard box of the above technology is used as it is and a product such as an absorbent article is accommodated and loaded, when the load is partially concentrated and the part is buckled, the cardboard box is inclined and easily collapsed. There was a problem that happened. Further, the corner portion does not buckle as expected, and there is a problem of buckling in an unexpected direction near the corner portion.
[0004]
Accordingly, an object of the present invention is to provide a corrugated cardboard box and a loading method thereof that can reliably prevent the collapse of the load when loaded.
[0005]
[Means for Solving the Problems]
In the present invention, a pair of first bending guide lines extending obliquely downward from the corners, and a ridge line formed by the front part or the back part and the side part from the tip part of the first bending guide line or its extension part. A corrugated cardboard box having a second bending guide line extending on both side surface portions, and a lower end portion of the second bending guide line does not reach the ridge line, and the first bending guide line and / or the second By providing a corrugated cardboard box in which a bending guide line is bent to form a first bent portion and a second bent portion corresponding to each of the bent guide wires, and a top surface portion is provided so as to move up and down as the bent portions are bent and stretched. The above-mentioned object has been achieved.
[0006]
Further, the present invention provides a corrugated cardboard in which the bending guide wires in the corrugated cardboard box of the present invention are bent to form corresponding bent portions, and the top surface portion is provided so as to move up and down as the bent portions bend and stretch. The object is achieved by providing a box.
[0007]
In addition, the present invention achieves the above object by providing a method of loading a cardboard box in which a plurality of the cardboard boxes of the present invention are respectively accommodated and loaded with contents.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a cardboard box according to the present invention will be described based on preferred embodiments with reference to the drawings.
[0009]
1 to 3 show a first embodiment in which the cardboard box according to the present invention is applied to a cardboard box for packing a disposable diaper packed in a bag. In FIG. 1, reference numeral 1 denotes a cardboard box.
[0010]
A corrugated cardboard box 1 according to the present embodiment shown in FIG. 1 has a corrugated cardboard 10 in a predetermined unfolded form shown in FIG. It is a substantially hexahedron-shaped box in which 5, 5 and the bottom surface portion 6 are formed. The top surface portion 2 is formed by folding the flap portions 23, 24, and 25 at folding lines 230, 240, and 250, and further joining or bonding them. Further, the bottom surface portion 6 is formed by folding the flap portions 63, 64, 65 at folding lines 630, 640, 650 and further joining or bonding them. Further, the side surface portion 5 and the back surface portion 4 are bonded or bonded via a bonding / bonding margin 7.
[0011]
The corrugated cardboard box 1 has a pair of first bending guide wires 11 extending diagonally downward from the upper corners 235 and 245 on both side surfaces 5 and 5, respectively.
[0012]
Further, the cardboard box 1 has a second bent extending from the front end portion of the first bending guide wire 11 or its extending portion in the direction of the ridge lines 35 and 45 formed by the front surface portion 3 or the back surface portion 4 and the side surface portion 5. A guide wire 12 is provided.
[0013]
1 to 3, for convenience, the first and second bending guide lines 11 and 12 are indicated by broken lines. These bending guide lines can be bent and stretched so that the top surface portion 2 can move up and down. As long as the bent portion can be formed, the form is not particularly limited. Examples of the form of each of these bending guide lines include forms such as a perforation line provided so as to penetrate through the corrugated cardboard 10, and a crushing line using a ruled line blade, cork, or rubber.
[0014]
An angle θ of the first bending guide line 11 (an angle formed by the first bending guide line 11 and the folding line 250 of the flap portion 25) θ is preferably 40 to 50 degrees, and preferably 44 to 46 degrees. More preferably, it is 45 degrees. Even if the angle θ is too wide or too narrow, it does not break in a fixed manner, and may hinder the vertical movement of the top surface 2.
[0015]
The length of the first bending guide wire 11 can be appropriately set according to the dimension of the interval d shown in FIG. 3A described later, but when used for packing disposable diapers as in this embodiment. Is preferably 10 to 50 mm, more preferably 15 to 30 mm.
[0015]
The second bending guide wire 12 makes the vertical movement of the top surface portion 2 accompanying the bending and stretching of the bending portion 110 formed by the first bending guide wire 11 and the bending portion 130 (see FIG. 3B) described later smoother. A bent portion 120 (see FIG. 3B) to be performed is formed. The lower end portion of the second bending guide line 12 does not reach the ridge lines 35 and 45. For this reason, the axial force in each ridgeline is maintained, and the buckling strength of the trunk portion of the corrugated cardboard 1 is kept high.
[0016]
In the present embodiment, the second bending guide wire 12 is provided in a straight line. The length of the second bending guide wire 12 is preferably 2 to 10 times the length of the first bending guide wire 11, and more preferably 3 to 5 times. If the second bending guide wire 12 is too short with respect to the first bending guide wire 11, the ridge lines 35 and 45 of the cardboard box 1 are greatly inclined from the vertical, the load resistance of the cardboard box 1 is significantly reduced, and the load collapses due to buckling. If the length is too long, the side surface portion 5 may not be folded inward quantitatively but bulge to the outside, and the load resistance of the cardboard box may be significantly reduced, resulting in collapse of the load due to buckling.
[0017]
The angle α formed by the first bending guide line 11 and the second bending guide line 12 can be appropriately set according to the dimension of the interval d shown in FIG. Thus, when applying to the packaging of a disposable diaper, it is preferable that this angle (alpha) is 105-132 degree | times, and it is more preferable that it is 110-132 degree | times. If the angle α is too small, the ridge lines 35 and 45 of the cardboard box 1 are greatly inclined from the vertical, and the load resistance of the cardboard may be remarkably reduced, and the load collapse due to buckling may occur.
[0018]
The distance w between the lower end of the second bending guide line 12 and the ridge 35 or 45 can be set as appropriate according to the dimension of the distance d in FIG. When applied to packaging of disposable diapers, the interval w is preferably 3 to 15 mm, more preferably 5 to 10 mm. If the distance w is too small, the load resistance of the corners forming the ridges 35 and 45 in the cardboard box 1 is significantly reduced, and the load collapse due to buckling may occur.
[0019]
The cardboard box 1 can be manufactured by forming the corrugated cardboard 10 in the unfolded form shown in FIG. 2, bending the bending guide wires 11, 12, bending / bending predetermined portions, and joining / bonding.
[0020]
As the corrugated cardboard 10 constituting the corrugated cardboard box 1, a known corrugated cardboard conventionally used for the corrugated cardboard box can be used without any particular limitation. In addition, as a method of bending and bending each surface of the corrugated cardboard 10 and joining and adhering to form a hexahedral box, a known method conventionally used in the manufacture of corrugated cardboard can be used without any particular limitation. .
[0021]
In the cardboard box 1, a disposable diaper (not shown) packed in a bag is accommodated in the cardboard box 1 in a compressed state, and the top surface portion 2 is sealed, and then the top as shown in FIGS. 3 (a) and 3 (b). While uniformly applying pressure to the surface portion 2, the side surface portions 5 and 5 are pressed and bent so as to connect the intersections of the bending guide lines 11 and 12, to form the bent portions 110, 120, and 130. The bent portion 140 is formed by pressing the front portion 3 and the rear portion at substantially the same height as the bent portion 130. The top surface 2 can be moved up and down as the bent portions 110 to 140 are bent and stretched.
[0022]
An interval between the folding line 250 of the flap portion 25 and the third bent portion 130 (an interval when the third bent portion 130 is in the extended state) d (see FIG. 3A) is 2 of the height H of the side surface portion 5. It is preferably 10%, more preferably 4-7%. If the distance d is too small with respect to the height of the side surface portion 5, the bending guide wires 11 and 12 may not be regularly folded, and the vertical movement of the top surface portion may be hindered. Further, unless the lower surface of the flap portion 25 is in contact with the upper part of the product in the state of FIG. 4C, the load cannot be caused to follow the product itself. If it is too wide, the repulsive force of the contents (elastic body) will increase, and after loading on the pallet P, the bent part will function as a spring when handling products in forklifts and automated warehouses, etc., and will not be stable And may cause cargo collapse. The distance d and the height H of the side surface portion 5 can be appropriately set according to the material of the cardboard and the product to be accommodated, but when applied to the packaging of the disposable diaper as in this embodiment, the distance d is It is preferably 8 to 35 mm, more preferably 15 to 25 mm, and the height H of the side surface portion 5 is preferably 100 to 110% of the interior pack size of the disposable diaper, and is 100 to 105%. More preferably.
[0023]
The fourth bent portion 140 is coupled to the bent portions 110 and 120 and the bent portion 130 formed by the first and second bending guide wires 11 and 12 so that the fourth bent portion 140 bends and stretches, thereby causing a shear direction. When a load is applied to the top surface portion 2, the top surface portion 2 is provided so as to move up and down with good balance in accordance with the load.
[0024]
Both end portions of the fourth bent portion 140 preferably reach the ridge lines 35 and 45 in terms of causing the top surface portion 2 to move up and down with good balance. However, the axial force at the ridge lines 35 and 45 is maintained. From the point of increasing the buckling strength of the cardboard box 1, the ridgelines 35 and 45 may not be reached. In this case, an interval (not shown) between the fourth bent portion 140 and the ridge lines 35 and 45 is preferably 8 to 35 mm, and more preferably 15 to 25 mm.
[0025]
The distance between the fourth bent portion 140 and the folding lines 230 and 240 of the flap portions 23 and 24 (the distance when the fourth bent portion 140 is in the extended state) d ′ (see FIG. 3A) is the first bent portion. For the same reason as 110, it is preferably 8 to 35 mm, and more preferably 15 to 25 mm.
[0026]
In the method of loading the cardboard box 1 according to the present embodiment, the bending guide lines 11 and 12 of the cardboard box 1 containing the contents are bent in advance to form the bent portions 110 and 120, as described above. After forming the sections 130 and 240, a plurality (three in this embodiment) are stacked vertically on the pallet P as shown in FIG. In the cardboard box 1, in addition to the bent portions 110 and 120, the bent portions 130 and 140 are bent and stretched so that the top surface portion 2 can move up and down flexibly according to the load, and the load can be relaxed in a balanced manner. Load collapse is reliably prevented even during the loading of the pallet P after loading.
[0027]
As described above, according to the cardboard box 1 of the present embodiment, even when a load is received from above, the first to fourth bent portions 110 to 140 flex flexibly according to the load, and the top surface portion. Since 2 can move up and down and the load can be relaxed in a well-balanced manner, the collapse of the load when a plurality of cardboard boxes 1 are loaded can be reliably prevented.
[0028]
Moreover, since the cardboard box 1 of this embodiment can be manufactured from the cardboard 10 of 1 sheet, it is low-cost. Further, when the bent portions 110 and 120 are formed from the first and second bending guide wires 11 and 12, the bent portions 130 and 140 are formed. Therefore, when the corrugated board 10 is manufactured, the bent portions 130 and 140 are formed. Processing of the bending guide wire can be omitted.
[0029]
Moreover, in the stacking method of the cardboard box 1 of the present embodiment, each of the plurality of cardboard boxes 1 is formed in such a manner that the bent portions 110 to 140 are formed in advance and the top surface portion 2 is movable up and down along with the bending and stretching. Even when the pallet P is moved at the time of loading or after loading, each bending portion flexes and stretches flexibly according to the load applied to the top surface portion 2, the top surface portion 2 moves up and down, and the load is concentrated and applied locally. It is relaxed in a well-balanced manner. Therefore, the collapse of the cardboard box 1 can be reliably prevented. In addition, when the corrugated cardboard boxes are laminated, a cushioning material or the like is unnecessary, and the cardboard containing the products can be directly loaded, so that the laminating work is also simple.
[0038]
The present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.
[0039]
In the corrugated cardboard box of the present invention, the second bending guide line 12 is preferably linear as in the first embodiment, but the second bending guide line may be curved. Further, the second bending guide line may be a combination of a straight line and a curved line. In the case of a straight line, the second bending guide line may be partially bent.
[0040]
Although the cardboard box of the present invention is particularly preferable for packing disposable diapers and the like as in the above-described embodiment, the use thereof is not particularly limited. The cardboard box of the present invention can be used for packing products that can be elastically deformed and can be stored in a compressed state, such as tissue paper, rubber, sponge products, and the like.
[0041]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the cardboard box which can prevent reliably the collapse of a load when loaded and its loading method are provided.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a first embodiment of a cardboard box according to the present invention.
FIG. 2 is a development view of the cardboard box according to the first embodiment.
FIGS. 3A and 3B are diagrams schematically showing the corrugated cardboard box according to the first embodiment, in which FIG. 3A is a diagram showing a state before the bending guide line is bent, and FIG. 3B is a diagram showing the bending guide line bent. It is a figure which shows the state which formed the bending part.
FIG. 4 is a diagram schematically showing a state in which the cardboard boxes of the first embodiment are loaded on a pallet.
[Explanation of symbols]
1 cardboard box 1 0 cardboard 11 first bending guide line 110 first bent part 1 2 second bent guide line 12 0 second bent part 15, 16 folding line 130 third bent part 140 fourth bent part 2 top surface part 23, 24 and 25 flaps 230, 240, 250, folding line 3 front portions 35 ridge 4 rear portion 45 ridge 5 side portions 6 bottom part 63, 64, 65 flap portion 630, 640, 650, folding line 1 0 cardboard

Claims (5)

A pair of first bending guide lines extending obliquely downward from the corners, and a second bending extending from the front end portion of the first bending guide wires or an extension thereof in the direction of the ridge line formed by the front portion or the back portion and the side portion. A corrugated cardboard box having a guide wire on both side portions, and a lower end portion of the second bending guide wire does not reach the ridge line;
The first bending guide line and / or the second bending guide line are bent to form corresponding first bent portions and second bent portions, and the top surface portion can be moved up and down as the bent portions are bent and stretched. Corrugated cardboard box provided . Cardboard box according to claim 1 wherein spacing between the lower end and the ridge line of the second bending guide wire is 3 to 15 mm. The cardboard box according to claim 1 or 2 , wherein an angle formed by the first bending guide line and the second bending guide line is 105 to 132 degrees . A method for loading cardboard boxes in which contents are respectively stored and loaded in a plurality of cardboard boxes according to claim 1 .   The cardboard box loading method according to claim 4, wherein the contents are stored in a compressed state.

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