JP2004059001A - Folding structure of cardboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding structure of cardboard which is resistant to the swelling of a barrel by a stacked load, keeps a good appearance and is excellently suitable for box-making by a case maker. <P>SOLUTION: Two rules 7 inclined to face each other are repetitively placed via a cut 8 on ridges of a standing face plate 1 and a flat face plate 2, and the ridges of the plates 1 and 2 are folded along the rules 7. A paper box employing this folding structure absorbs vertical deformation as the folding angle of the rules 7 vary when the stacked load is applied, thereby preventing only one of the rules 7 from folding when box-making. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cardboard folding structure applied to a ridge or the like of a wrap round case.
[0002]
[Prior art]
Conventionally, in the packaging of beverage cans such as canned beer, as shown in FIG. 22, each of a pair of upright plates 51 and flat plates 52 which are continuously provided so as to enclose cans C is bent, and a passage 53 at one end is bent. A corrugated cardboard wrap round case is used in which a peripheral wall is formed by sticking to the opposite flat plate 52 to form a peripheral wall, and the flaps 54 and 55 extending from the vertical plate 51 and the flat plate 52 are closed to close the end faces. .
[0003]
[Problems to be solved by the invention]
By the way, if a large number of the above-mentioned wrap round cases are piled up and stored, there is a problem that the standing plate 51 swells due to the phenomenon that the can digs into the corrugated cardboard of the flat plate 52 due to the stacking load, and the appearance is impaired. is there.
[0004]
As a countermeasure, it is conceivable to insert another ruled line in parallel with the ruled line serving as the ridge line of the vertical plate 51 and the flat plate 52 over the entire length and use this ruled line as a buckling guide line. There is a possibility that the ruled line which is bent at the time of the box making is not constant, and the box making is defective.
[0005]
Therefore, the present invention seeks to provide a cardboard folding structure that is less likely to cause swelling due to a stacking load when applied to a wrap round case or the like, maintains aesthetic appearance, and is excellent in suitability for box making in a caser. Things.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention arranges two inclined ruled lines repeatedly at a boundary portion between two sheet materials, and bends the two sheet materials along these ruled lines.
[0007]
If this bent structure is adopted for the ridges of the vertical and flat plates of the paper box, when a stacking load is applied, the bending angle of the two inclined ruled lines changes, and the deformation in the height direction is absorbed. Therefore, bulging of the trunk is suppressed.
[0008]
Also, at the time of box making, the two inclined ruled lines are broken together, so that one of the ruled lines does not bend one side, and the occurrence of poor box making is prevented.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the first category of the present invention will be described with reference to FIGS.
[0010]
1 and 2, the pair of standing plates 1 and the flat plate 2, which are continuously provided so as to enclose the can C, are bent, and the passage 3 at one end is replaced with the flat plate 2 on the opposite side. To form a peripheral wall and close the flaps 4 and 5 to close the end faces. The upright plate 1 and the flap 4 are provided with a tear strip 6 for half-opening.
[0011]
In this blank of the wrap round case, as shown in FIG. 3, two X-shaped ruled lines which are symmetrically inclined and intersect at the approach end at the ridge between one flat plate 2 and the raised plate 1 on both sides thereof. 7 are repeatedly arranged, and a vertical cut 8 is provided between the separated ends of the two ruled lines 7.
[0012]
When the blank is assembled and the can C is packaged, as shown in FIG. 4, the two inclined ruled lines 7 are evenly folded, the portion between them is bent obliquely, and the upright plate 1 from the intersection of the ruled lines 7 is bent. The fact that the height is smaller than the height of the can C also acts, so that the can C is tightly packaged and the appearance is multifaceted and unique.
[0013]
Further, even when a stacking load is applied and the upper and lower flanges of the can C bite into the corrugated board of the flat plate 2, the bending angle of the ruled line 7 changes and the deformation in the height direction is absorbed. Is less likely to bulge, and the phenomenon in which the elevation plate 1 buckles at the half-cut slit band 6 is also prevented.
[0014]
In addition, since there is no breakage of one of the ruled lines 7 during the box making, no trouble of poor box making occurs even if packaging is performed with a high-speed caser.
[0015]
Furthermore, since the ridges of the elevation plate 1 and the flat plate 2 can be bent so as to follow the taper of the bottom of the can C, the area of the blank can be made smaller than that of the conventional one. Since a stacking load is received, low-grade cardboard can be used as a material, and packaging costs can be reduced.
[0016]
In this embodiment, the ruled lines 7 are provided at the ridges of the lower flat plate 2 and the two raised plates 1, but instead of or in addition to this, the upper flat plate 2 and the two raised plates 1 A ruled line 7 may be provided at the ridge.
[0017]
In this case, by inclining the ruled line 7 on the side of the elevation plate 1 and the ruled line 7 on the side of the flat plate 2 asymmetrically, it is possible to adjust the inclination angle of the portion sandwiched between the two ruled lines 7 in the bent state. .
[0018]
Further, as shown in FIG. 5, a single horizontal ruled line 9 may be provided from the intersection of the ruled lines 7, and as shown in FIG. 6, the two inclined ruled lines 7 and the cut 8 form a trapezoid. 7, or may be arranged so as to form a triangle as shown in FIG. 7, or one horizontal ruled line 9 may extend from the vertex of the triangle as shown in FIG.
[0019]
Further, as shown in FIGS. 9 and 10, two inclined ruled lines 7 and two horizontal ruled lines 9 may be arranged in combination so as to form a trapezoid or a triangle through a cut 8. .
[0020]
In this case, at the time of stacking, not only the two inclined ruled lines 7 but also the bending angle of the two horizontal ruled lines 9 change to absorb the deformation in the height direction. The ruled line 7 of the book prevents occurrence of defective box-making due to the one-sided break of the ruled lines 7 and 9.
[0021]
Next, an embodiment of the second classification of the present invention will be described with reference to FIGS.
[0022]
In the wrap round case shown in FIGS. 11 and 12, similarly to the above, each pair of the upright plate 1 and the flat plate 2 is bent so as to involve the can C, and the passage 3 is attached to the opposite flat plate 2. A peripheral wall is formed, the flaps 4 and 5 are closed to close the end faces, and the upright plate 1 and the flap 4 are provided with a tear band 6 for half-opening.
[0023]
In this blank of the wrap round case, as shown in FIG. 13, two X-shaped ruled lines which are symmetrically inclined and intersect at the approach end at the ridge between one flat plate 2 and the raised plate 1 on both sides thereof. 7 are repeatedly arranged, and two horizontal ruled lines 9 are provided in combination so as to connect the separated ends. As in the first class embodiment, no vertical cut 8 is provided.
[0024]
When the blank is assembled and the can C is packaged, as shown in FIG. 14, the two inclined ruled lines 7 are evenly folded, and the portion between them is bent obliquely, so that the vertical plate 1 from the intersection of the ruled lines 7 is bent. The fact that the height is smaller than the height of the can C also acts, so that the can C is tightly packaged and the appearance is multifaceted and unique.
[0025]
In addition, at the time of stacking, the bending angle of not only the two inclined ruled lines 7 but also the two horizontal ruled lines 9 changes to absorb the deformation in the height direction. At the time of boxing, the two inclined ruled lines 7 prevent the occurrence of defective box-making due to the one-sided break of the ruled lines 7 and 9.
[0026]
Furthermore, since the ridges of the elevation plate 1 and the flat plate 2 can be bent so as to follow the taper of the bottom of the can C, the area of the blank can be made smaller than that of the conventional one. Since a stacking load is received, low-grade cardboard can be used as a material, and packaging costs can be reduced.
[0027]
Also, unlike the first class, since there is no cut 8, even if a large impact is applied due to a fall or the like, the ridges of the upright plate 1 and the flat plate 2 are hardly torn, and no dust enters during storage. Since the sharp cut end is not exposed, the hand is not cut.
[0028]
In this embodiment, the ruled lines 7 are provided at the ridges of the lower flat plate 2 and the two raised plates 1, but instead of or in addition to this, the upper flat plate 2 and the two raised plates 1 A ruled line 7 may be provided at the ridge.
[0029]
In this case, by inclining the ruled line 7 on the side of the elevation plate 1 and the ruled line 7 on the side of the flat plate 2 asymmetrically, it is possible to adjust the inclination angle of the portion sandwiched between the two ruled lines 7 in the bent state. .
[0030]
Further, as shown in FIG. 15, an interval may be provided at the approaching end of the two inclined ruled lines 7, and adjacent approaching ends may be connected by two horizontal ruled lines 9, as shown in FIG. Alternatively, the adjacent approach ends may be directly connected.
[0031]
Also, as shown in FIG. 17, two X-shaped ruled lines 7 intersecting at the approaching end may be repeatedly arranged and their separated ends may be directly connected. As shown in FIG. One horizontal ruled line 9 may be extended.
[0032]
Further, as shown in FIG. 19, the inclined ruled lines 7 and the horizontal ruled lines 9 are arranged in a zigzag manner so as to be connected together, and the horizontal ruled lines 9 are alternately opposed to the horizontal ruled lines 9 on this line. 9 may be provided.
[0033]
By the way, in each of the embodiments described above, the wrap round case in which the upright plate 1 and the flat plate 2 are bent at the ridge at 90 ° is illustrated. However, as shown in FIGS. Can be applied to a tray having a double end wall in which the end plate 13 is bent by 180 ° to form an end wall 13.
[0034]
In this tray, a side wall 11 is erected from a bottom wall 10, and bent pieces 12 extending from both ends of the side wall 11 are sandwiched and held between two standing plates 1.
[0035]
If the above-mentioned bent structure is applied to such a tray, the two ruled lines 7 and 9 are evenly folded by the two inclined ruled lines 7 in the box making, so that the box forming defect due to one of the ruled lines 7 and 9 is broken. Is prevented.
[0036]
【The invention's effect】
As described above, in the cardboard folding structure according to the present invention, when a stacking load is applied, the bending angle of the two ruled lines changes, and deformation in the height direction is absorbed. Swelling of the trunk is suppressed, and at the time of box making, the two inclined ruled lines prevent the occurrence of defective box making due to one side break at one of the ruled lines.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a packaging state of a wrap round case according to a first classification of the present invention; FIG. 2 is a perspective view showing an upside-down state of the wrap round case; FIG. FIG. 4 is a cross-sectional view showing the same packaging state. FIG. 5 is a view showing another example of arrangement of ruled lines. FIG. 6 is a view showing another example of arrangement of ruled lines. FIG. FIG. 8 is a diagram showing another example of arrangement of ruled lines. FIG. 9 is a diagram showing another example of arrangement of ruled lines. FIG. 10 is a diagram showing another example of arrangement of ruled lines. FIG. 11 is a second classification of the present invention. FIG. 12 is a perspective view showing the packaging state of the wrap round case according to FIG. 12; FIG. 13 is a perspective view showing the upside down state of the wrap round case; FIG. FIG. 15 is a view showing another example of arrangement of ruled lines. FIG. 16 is another example of arrangement of ruled lines. FIG. 17 is a diagram showing another example of arrangement of ruled lines. FIG. 18 is a diagram showing another example of arrangement of ruled lines. FIG. 19 is a diagram showing another example of arrangement of ruled lines. FIG. 21 is a perspective view showing a tray to which a curved structure is applied. FIG. 21 is a cross-sectional view of an end wall of the tray. FIG. 22 is a perspective view showing a packaging state of a conventional wrap round case.
DESCRIPTION OF SYMBOLS 1 Elevated board 2 Plane board 3 Passage 4,5 Flap 6 Cutting band 7 Ruled line (inclined)
8 cut 9 ruled line (horizontal)

Claims (8)

A bent structure made of cardboard, in which inclined ruled lines are repeatedly arranged at the boundary between two consecutively provided sheet materials, and the two sheet materials are bent along the ruled lines. 2. The cardboard folding structure according to claim 1, wherein two of the inclined ruled lines are opposed to each other. 3. The cardboard folding structure according to claim 2, wherein the two inclined ruled lines intersect at a near end. 3. The cardboard folding structure according to claim 2, wherein an interval is provided at an approaching end of the two inclined ruled lines. 5. The folded structure of a cardboard according to claim 2, wherein a vertical cut is provided between the ends of the two inclined ruled lines. The cardboard folding structure according to any one of claims 1 to 5, wherein a horizontal ruled line is combined with the inclined ruled line. A paper box having a peripheral wall formed by bending each pair of an upright plate and a flat plate, wherein the bent structure according to any one of claims 1 to 6 is applied to a ridge of at least one of the flat plate and the upright plate. The paper box according to claim 7, wherein a cut band formed by half cutting is provided on the elevation plate.

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