JP2012035883A - Folding structure of corrugated board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent body swelling in a package state, and one side folding when forming a box, while improving appearance and finger touch feeling in conveying, and to prevent hooking when commodity is taken out.SOLUTION: In a ridge boundary section of a vertical plate 1 and a horizontal plate 2, a press line 7 which is a folding center, and two parallel press lines 8 shifted from the line 7 are alternately put from a back side of a corrugated board, and a break 9 of half cut is put in between them. Two parallel press lines 10 are continuously put in along two parallel press lines 8 of a back side, from a front side of a corrugated board, and the vertical board 1 and the horizontal board 2 are folded along the press lines 7, 8 and 10. One side folding at the press lines 8 and 10 is prevented by the press line 7, and body swelling is prevented by changing a folding angle at the press lines 8 and 10. A cut edge of the break 9 is not exposed on a front side of the box, appearance is improved, and finger touch feeling becomes soft in conveying. In addition, a step part inside the box becomes small, and the commodity is easily taken out.

Description

  The present invention relates to a folding structure applied to a ridge portion or the like of a cardboard box.

  For example, the following Patent Document 1 describes a wrap-round cardboard box for packaging beverage cans such as beer as shown in FIG. In this cardboard box, each pair of upright plate 51 and flat plate 52 is bent so as to enclose can C, and a peripheral wall is formed by pasting passage 53, and flaps 54 and 55 are closed to close end surfaces. In addition, the rising plate 51 and the flap 54 are provided with a tear band 56 for unsealing by half cutting.

  In this cardboard box blank, as shown in FIG. 12, a bent structure is formed in the boundary portion between one flat plate 52 and the elevation plates 51 on both sides thereof, and is located in the center from the back side of the cardboard. One ruled line 57 and two ruled lines 58 that are shifted in parallel with each other are alternately placed across a notch 59 that penetrates in the thickness direction of the cardboard.

  When assembling the above blank with a caser and packaging the can C, when the upright plate 51 is bent from the flat plate 52, first, a single ruled line 57 starts to be broken, and along with this, the two ruled lines 58 are partially broken. Begin to fold evenly.

  When the upright plate 51 rises, the portion between the two ruled lines 58 is bent obliquely, the peripheral portion of the one ruled line 57 is also tightened, and the can C is tightly packaged.

  When packaged in this way, even if the upper and lower flanges of the can C bite into the corrugated cardboard of the flat plate 52 when a loading load is applied, the bending angle of the ruled line 58 changes and the deformation in the height direction is absorbed. As a result, the body swelling phenomenon in which the upright plate 51 swells in a barrel shape is suppressed.

Japanese Patent No. 4126201

  However, in the corrugated cardboard box having the bent structure as described above, a large unevenness is generated in the ridge portion in the assembled state, so when carrying the cardboard box from the bottom, there may be a strange feeling in handling. There was a problem that the impression of appearance was also somewhat damaged.

  In addition, when a can is wrapped in a cardboard box in a state of being wrapped in a paperboard multipack for each sales unit, when the multipack is taken out from the end face of the box, the multipack is placed on the step formed by the cut edge. Sometimes it was caught and felt difficult to remove.

  Therefore, an object of the present invention is to improve the appearance and the touch feeling during transportation while preventing the body from being swollen in a packaged state and being broken at the time of making a box, and to prevent catching at the time of taking out the product.

  In order to solve the above-described problems, the present invention provides a folded structure in which a corrugated cardboard is bent so that two plate-shaped portions form an angle via a ridge portion. From the back side, alternately insert one ruled line that is the center of the fold and two parallel ruled lines that are offset from this, and make a half-cut between them, from the front side of the cardboard Two parallel ruled lines were continuously inserted along two parallel ruled lines on the back side, and the two plate-like portions were bent along these ruled lines.

  Further, the two parallel ruled lines on the front side are positioned outside the two parallel ruled lines on the back side.

  Further, the one ruled line and the two parallel ruled lines on the back side are deeply cut, and the two parallel ruled lines on the front side are cut shallowly.

  When such a folded structure is applied to the ridge of a corrugated cardboard box, when making a box, the single ruled line on the back side prevents the two ruled lines from being folded apart. Due to the change of the bending angle along the ruled line, the swollen body is prevented.

  And since the cut was made into a half cut from the back side, the cut edge of the cut is not exposed on the surface side of the box, the appearance becomes good, and the feel during transportation can be softened.

  Further, even when an angular product such as a multipack is packaged, a large step portion is not formed on the inner ridge portion of the box, so that it is difficult to be caught when the product is taken out of the box and can be easily taken out.

The perspective view which shows the packaging state of the cardboard box which applied the bending structure which concerns on this invention The perspective view which shows the state upside down same as the above Back view showing the same blank Expanded rear view of the ridge Same as above VI-VI sectional view of FIG. VII-VII sectional view of FIG. The expanded perspective view which shows the bent bottom side ridge part same as the above. IX-IX sectional view of FIG. XX sectional view of FIG. The perspective view which shows the packaging state of the cardboard box which applied the conventional bending structure Back view showing the same blank

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, this cardboard box has a pair of elevation plates so that a plurality of multipacks P can be wound in a state where cans C are wrapped with paperboard multipacks P for each sales unit. 1 and the flat plate 2 are bent, the passage 3 is adhered to form a peripheral wall, the flaps 4 and 5 are closed, and the end noodles are closed, and the elevation plate 1 and the flap 4 are A tear strip 6 for opening is provided.

  In this cardboard box blank, as shown in FIG. 3, the folding structure according to the present invention is applied to the boundary portion between one flat plate 2 and the elevation plates 1 on both sides thereof.

  That is, as shown in FIGS. 4 and 5, from the back side of the corrugated cardboard, one ruled line 7 that is the center of bending and two parallel ruled lines 8 that are shifted with respect to this are alternately inserted. At the same time, half-cuts 9 perpendicularly sandwiched between these are inserted, and two parallel ruled lines 10 are continuously entered from the front side of the cardboard along the two parallel ruled lines 8 on the back side. Yes.

  Here, the two parallel ruled lines 10 on the front side are located outside the two parallel ruled lines 8 on the back side. This is because it is necessary to absorb the difference between the inner and outer bent positions due to the thickness of the corrugated cardboard during bending.

  Moreover, as shown in FIG.6 and FIG.7, the ruled lines 7 and 8 put from the back side of the corrugated cardboard are deeply engraved and put from the front side of the cardboard like the normal ruled line put in other bent portions. The ruled line 10 is carved shallower than a normal ruled line. This is because the ruled line 8 on the back side is mainly for the purpose of guiding the bending at the time of making the box, and the ruled line 10 on the front side is intended for the purpose of guiding the buckling at the time of stacking.

  When assembling the blank and wrapping the multipack P, as shown in FIGS. 8 to 10, when the upright plate 1 is bent from the flat plate 2, one ruled line 7 in the center on the back side starts to be broken, Along with this, two parallel ruled lines 8 and 10 on the back side and the front side start to bend evenly.

  When the upright plate 1 rises, the portion between the two ruled lines 8 bends obliquely, the peripheral part of the one ruled line 7 is tightened, and the packaging state as shown in FIGS. Become.

  When packaged in this way, when a large load is applied, the bending angle of the ruled lines 8 and 10 changes and the deformation in the height direction is absorbed, so that the elevation plate 1 is bent irregularly and is seated. It won't bend or bulge into a barrel.

  Further, since one side of the ruled lines 8 and 10 is not broken at the time of box making, even if it is packed with a high-speed caser, the trouble of box making does not occur.

  Then, since the cut 9 is a half cut from the back side, the cut edge of the cut 9 is not exposed on the surface side of the box, and only the ruled line 10 continuously shallowly exposed is exposed, so the appearance is improved. , The feeling of handling during transportation is also softened.

  In addition, since a large step portion is not formed on the inner ridge portion of the box, when the flaps 4 and 5 are opened and the multipack P is taken out of the box, it is difficult to be caught and can be easily taken out.

  In the above embodiment, the case where the folding structure according to the present invention is applied to a lapland type cardboard box has been exemplified. However, this folding structure may be another type of cardboard box or buffer such as a grooving type. It can also be applied to materials.

DESCRIPTION OF SYMBOLS 1 Elevation board 2 Plane board 3 Passage 4,5 Flap 6 Rupture band 7,8 Ruled line 9 Cut 10 Ruled line P Multipack C Can

Claims (3)

  In the folding structure in which the corrugated cardboard is folded so that the two plate-shaped portions form an angle through the ridge, a single ruled line (the center of the folding) is formed from the back side of the corrugated cardboard at the boundary between the two plate-shaped portions. 7) and two parallel ruled lines (8) that are shifted from each other, and a half cut (9) sandwiched between them, and from the front side of the cardboard to the parallel side of the back side Two parallel ruled lines (10) are continuously placed along the two ruled lines (8), and the two plate-like parts are bent along these ruled lines (7, 8, 10). Corrugated cardboard folding structure.   2. The corrugated cardboard folding structure according to claim 1, wherein the two parallel ruled lines (10) on the front side are positioned outside the two parallel ruled lines (8) on the back side. .   The one or more ruled lines (7) and the two parallel ruled lines (8) on the back side are deeply engraved, and the two parallel ruled lines (10) on the front side are engraved shallowly. 2. A corrugated bent structure according to 2.

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