JP3973513B2 - 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]
The present invention provides a first bending guide line that is substantially parallel to the folding line of the flap portion that is continuous with the side surface portion, and a second that extends obliquely upward from both ends of the first bending guide line or its extension portion toward the corner portion. A bending induction line and a third bending induction line extending from the both ends of the first bending induction line or an extension thereof in a direction of a ridge line formed by the side surface and the front surface or the back surface; A fourth bending guide line having substantially the same height as the first bending guide line and substantially parallel to a folding line of a flap portion connected to the front portion and the back portion. The object is achieved by providing a corrugated cardboard box having a lower end portion of the third bending guide line not reaching the ridge line .
[0006]
In the present invention, the bending guide wires in the cardboard box of the present invention are bent to form corresponding bent portions, and the top surface portion is provided so as to be movable up and down as the bent portions are bent and stretched. The above object is achieved by providing a corrugated cardboard 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 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 includes a first bending guide wire 11 substantially parallel to the folding line 250 of each flap portion 25 connected to the side surface portion 5, and corner portions 235, 245 from both ends of the first bending guide wire 11 or extending portions thereof. Each side surface portion 5 has a second bending guide wire 12 extending obliquely upward toward the surface.
[0012]
1 to 3, for convenience, the first to third bending guide lines 11 to 13 are shown by broken lines, but these bending guide lines can be bent and extended 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 the corrugated cardboard, a crease line by a ruled line blade, cork, or rubber.
[0013]
The distance d between the folding line 250 of the flap portion 25 and the first bending guide line 11 is preferably 2 to 9% of the height H of the side surface portion 5, and more preferably 4 to 7%. If the distance d is too small with respect to the height of the side surface portion 5, the bending guide lines 12 and 13 may not be regularly folded, and the vertical movement of the top surface portion 2 may be hindered. Further, the load cannot be caused to follow the product itself unless the lower surface of the flap portion 25 is in contact with the upper part of the product in the state of FIG. If it is too wide, the repulsive force of the contents (elastic body) will increase, and the bent part will have the function of a spring when handling products in forklifts and automatic warehouses after loading on the pallet P as shown in FIG. In some cases, it is not stable and induces significant inclination and 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.
[0014]
The length of the first bending guide wire 11 is set to an angle θ (an angle formed by the first bending guide wire 11 and the second bending guide wire 12) θ toward the corner portions 235 and 245 of the second bending guide wire 12. It can be set accordingly. The angle θ is preferably 130 to 140 degrees, more preferably 134 to 136 degrees, and most preferably 135 degrees. Even if the angle θ is too wide or too narrow, the second bending guide wire 12 may not be regularly folded, and the vertical movement of the top surface portion 2 may be hindered.
[0015]
Further, the cardboard box 1 extends from both ends of the first bending guide wire 11 or its extending portion in a direction of a ridge 35 or 45 formed by the side surface portion 5 and the front surface portion 3 or the back surface portion 4. A bending guide wire 13 is provided. The third bending guide wire 13 causes the top surface portion 2 to move up and down as the bending portions 110 and 120 (see FIG. 3B) formed by the first bending guide wire 11 and the second bending guide wire 12 are bent and stretched. The bent portion 130 (see FIG. 3B) is formed more smoothly. The lower end portion of the third bending guide line 13 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]
The third bending guide wire 13 is linearly provided in the present embodiment. The length of the third bending guide wire 13 is preferably 2 to 10 times the length of the second bending guide wire 12, and more preferably 3 to 5 times. If the third bending guide wire 13 is too short with respect to the second bending guide wire 12, 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 and 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]
Wherein the angle α between the first bending guide wire 1 1 and the third bent guide wire 13, can be appropriately set depending on the size of the distance d shown in FIG. 3 (a), the present embodiment Thus, when applying to the packaging of a disposable diaper, this angle (alpha) is preferably 93 to 120 degrees, and more preferably 93 to 115 degrees. If the angle α is too large, the ridge lines 35 and 45 of the cardboard box 1 are greatly inclined from the vertical, and the load resistance of the cardboard box 1 may be significantly reduced, causing load collapse due to buckling.
[0018]
The distance w between the lower end of the third bending guide line 13 and the ridge line 35 or 45 can be set as appropriate according to the dimension of the distance d shown 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 ridge lines 35 and 45 in the cardboard box 1 may be significantly reduced, and the collapse of the load may occur due to buckling. In some cases, the cardboard box bulges outside without being folded, and the load resistance of the cardboard box is remarkably reduced, causing load collapse due to buckling.
[0019]
The corrugated cardboard box 1 of the present embodiment is substantially the same height as the first bending guide wire 11 and is substantially parallel to the folding lines 230 and 240 of the flap portions 23 and 24 connected to the front surface portion 3 and the back surface portion 4. Are provided on the front part 3 or the back part 4. The fourth bending guide wire 14 is bent and stretched by the bent portion formed by the fourth bending guide wire 14 coupled with the bending and stretching of the bent portion formed by the first to third bending guide wires 11 to 13. When the load is applied in the shearing direction, the top surface portion 2 is provided so as to move up and down with good balance according to the load.
[0020]
The fourth bending guide line 14 is also shown by a broken line for convenience, but there is no particular limitation on the form thereof as in the first to third bending guide lines 11 to 13. The form of the fourth bending guide line can be the same form as the first to third bending guide lines 11.
[0021]
It is preferable that both ends of the fourth bending guide line 14 reach the ridge lines 35 and 45 in terms of causing the top surface 2 to move up and down in a balanced manner. 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 need not be reached. In this case, an interval (not shown) between the fourth bending guide line 14 and the ridge lines 35 and 45 is preferably 8 to 35 mm, and more preferably 15 to 25 mm.
[0022]
The distance d ′ between the fourth bending guide wire 14 and the folding lines 230 and 240 of the flap portions 23 and 24 is preferably 8 to 35 mm for the same reason as the first bending guide wire 11, and is preferably 15 to 25 mm. Is more preferable.
[0023]
The cardboard box 1 can be manufactured by forming the developed corrugated cardboard 10 shown in FIG. 2, bending the bending guide wires 11 to 14, bending predetermined portions, and joining and adhering.
[0024]
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. .
[0025]
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 front portion 3, the back portion 4, and the side portions 5, 5 are pressed along the bending guide lines 11, 13, 14 to be bent inward of the cardboard box 1. The bent portions 110, 120, 130, and 140 are formed, and the top surface portion 2 can be moved up and down as the bent portions 110 to 140 are bent and stretched.
[0026]
In the stacking method of the cardboard box 1 of the present embodiment, as described above, after bending each bending guide line of the cardboard box 1 containing the contents to form a bent portion, a plurality of bent portions are formed as shown in FIG. (3 in this embodiment) are stacked vertically on the pallet P. 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. The load collapse is reliably prevented even when the pallet is loaded or when the pallet is moved 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.
[0029]
Moreover, in the loading method of the cardboard box 1 of the present embodiment, each of the plurality of cardboard boxes 1 is loaded in a state where the top surface portion 2 can move up and down as the bent portions 110 to 140 are bent and stretched. Even when moving together with the pallet P after loading, each bending guide wire flexes 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 not concentrated and applied in a well-balanced manner. Alleviated. 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, it is preferable that the third bending guide line 13 is linear as in the first embodiment, but the third bending guide line may be curved. Further, the third bending guide line may be a combination of a straight line and a curved line. In the case of a straight line, the third 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 1st bending guide line 12 2nd bending guide line 1 3 3rd bending guide line 14 4th bending guide line 15, 16 fold curve 110 , 120 , 130 , 140 bending part 2 top surface part 23 , 24, 25 flap portion 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 (7)

A first bent guiding line substantially parallel to the bending line of the flap portion continuous to the side surface portion, and a second bending guide wire extending obliquely upward toward the corner portion from both ends or extension of the first bent guide wire And a third bending guide line extending in the direction of a ridge line formed by the side surface portion and the front surface portion or the back surface portion from the both end portions or the extended portion of the first bending guide wire. In addition, the front or back portion has a fourth bend guide wire that is substantially the same height as the first bend guide wire and is substantially parallel to the folding line of the flap portion connected to the front and back portions. ,
A cardboard box in which a lower end portion of the third bending guide line does not reach the ridge line . The cardboard box according to claim 1 , wherein a distance between a lower end portion of the third bending guide line and the ridge line 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 third bending guide line is 93 to 120 degrees .   The cardboard box according to any one of claims 1 to 3, wherein an angle formed by the first bending guide line and the second bending guide line is approximately 135 degrees.   5. Each of the bending guide wires in the cardboard box according to claim 1 is bent to form a corresponding bent portion, and a top surface portion is provided so as to be movable up and down as the bent portions are bent and stretched. Cardboard box.   6. A cardboard box loading method in which contents are respectively stored and loaded in a plurality of cardboard boxes according to claim 5.   The cardboard box loading method according to claim 6, wherein the contents are stored in a compressed state.

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