JP2012210960A - Corrugated fiberboard box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corrugated fiberboard box in which corrugated fiberboard plates can be efficiently cut, the strength thereof against the external force is increased, and any deformation of the corrugated fiberboard box having a breakage guide line can be avoided in a conveying process.SOLUTION: The corrugated fiberboard box 10 includes a side surface part 19 of an octagonal cross-section consisting of a pair of short part side plates 15, a pair of long part side plates 17, and four diagonal part side plates 18, and a top part 20 and a bottom part 21 formed of an inner flap 14 and an outer flap 16, and has a breakage guide line 11 from a top part outer flap 16a to the long part side plates 17. Both edge parts 22 of a top part inner flap 14a and a bottom part inner flap to be continuous to upper and lower ends of the short part side plates 15 are arranged along an inner surface of each of the long part side plates 17 on each side. The four diagonal part side plates 18 are provided in a folded state at a folding angle θ of 20-40° with respect to the long side plates 17.

Description

  The present invention relates to a corrugated cardboard box, and in particular, a corrugated cardboard plate cut into a predetermined shape is bent along a folding line so as to have a side surface portion having an octagonal cross section, a top surface portion, and a bottom surface portion. Related to cardboard boxes.

  For example, a cardboard box is frequently used as a box for packing and transporting and storing a plurality of articles such as various daily goods. The cardboard box is subjected to bending processing, cutting processing or the like on the corrugated cardboard board cut into a predetermined shape, and by using a bonding means such as an adhesive as necessary, a side surface portion, a top surface portion, and a bottom surface portion Are preferably formed in a rectangular parallelepiped shape.

  In addition, cardboard boxes may be devised to increase the strength when packing articles by placing a cardboard board for reinforcement inside, but if a cardboard board for reinforcement is used separately, This is time consuming and wastes material. For this reason, a cardboard box having increased strength after being assembled has been developed by devising the shape of a single cardboard board to be cut without separately using a reinforcing cardboard board (for example, Patent Document 1). In the corrugated cardboard box of Patent Document 1, four side plates and a slanted wall plate between adjacent side plates form a side surface portion with a chamfered corner portion of the quadrangular shape, thereby preventing the compressive force in the vertical direction. The strength is increased and the pair of inner flaps that form the top and bottom surfaces are assembled with the tips of each other butted against each other, improving the strength against external forces facing the pair of inner flaps. It can be done.

  On the other hand, by providing a break guide wire that can be easily broken by hand in a cardboard box, it is easy to take out packed items, not only for transportation and storage, but in the state where the items are shown at the store, for example A cardboard box that can be used as a box to be displayed has also been developed (see, for example, Patent Document 2).

JP 2010-215266 A Utility Model Registration No. 3019071

  However, the corrugated cardboard box of Patent Document 1 is formed in a substantially rectangular parallelepiped shape, and the short side portion is considerably larger than the long side portion of a substantially rectangular cross-sectional shape with chamfered corners. Since it is shortened, in order to make the end portions of the pair of inner flaps abut each other, the inner flap connected to the side plate of the short side portion rather than the outer flap connected to the side plate of the long side portion. However, it is necessary to cut the corrugated board so that it protrudes considerably long. For this reason, it becomes impossible to cut the corrugated cardboard plate by aligning the leading edge of the outer flap connected to the long side plate and the leading edge of the inner flap connected to the short side plate, Cutting efficiency is reduced.

  Also, if a cardboard box is provided with a break guide wire that can be easily broken by hand, stress concentrates on the break guide line, and the cardboard box is likely to be deformed, for example, during the transportation process after packing the goods. The appearance may be damaged.

  The present invention can efficiently cut the corrugated cardboard plate by aligning the front edge of the outer flap connected to the side plate of the long side and the front edge of the inner flap connected to the side plate of the short side, as well as external force. An object of the present invention is to provide a cardboard box that can effectively prevent the cardboard box from being deformed during the conveyance process even when a breaking guide wire is provided.

  The present invention is a pair of short side plates on which inner flaps are continuously provided and a pair of long sides on which outer flaps are provided in a continuous manner by bending cardboard plates cut into a predetermined shape along a folding line. Side plate, octagonal cross-section side plate comprising four oblique side plate disposed between each adjacent short side plate and long side plate, and a pair of top surface flaps And a top surface part formed by a pair of top surface part outer flaps, and a bottom surface part formed by a pair of bottom surface part inner flaps and a pair of bottom surface part outer flaps, and at least one of the top surface part outside A cardboard box in which a pair of breakage guide lines are provided from a flap to the long side portion side plate, the top surface portion inner flap connected to the upper end portion of the short side portion side plate, and the short At the lower end of the side plate The bottom side flaps that are provided have a shape in which both side edge portions are arranged along the inner side surfaces of the long side part side plates on both sides, and the four oblique side part side plates are The above object is achieved by providing cardboard boxes that are arranged in a state of being bent at a bending angle of 20 ° to 40 ° with respect to each of the side plates of the long side portion.

  According to the corrugated cardboard box of the present invention, the corrugated cardboard plate can be efficiently obtained by aligning the front end edge of the outer flap connected to the side plate of the long side and the front end edge of the inner flap connected to the side plate of the short side. In addition to being able to cut, the strength against external force can be improved, and even when a break guide wire is provided, it is possible to effectively avoid deformation of the cardboard box during the conveyance process.

1 is a perspective view of a cardboard box according to a preferred embodiment of the present invention. It is an expanded view of the cut corrugated cardboard board for forming the corrugated cardboard box concerning one desirable embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The structure of the cardboard box which concerns on preferable one Embodiment of this invention is demonstrated, (a) is a schematic top view, (b) is a schematic bottom view.

  A cardboard box 10 according to a preferred embodiment of the present invention shown in FIG. 1 is packed and transported as a container, for example, a plurality of bag-shaped flexible packaging bodies such as pouches and gusset bags containing liquid detergent for refilling. Used as a box for storing and storing. Further, the cardboard box 10 of the present embodiment is provided with a break guide wire 11 that can be easily broken by manual work, and the cardboard box 10 is opened and accommodated by breaking along the break guide line 11. For example, it has a function of making it easy to take out an item and displaying it in a state where an article is shown at a store, for example. Furthermore, the cardboard box 10 according to the present embodiment has a function of efficiently supporting an external force applied during transportation or the like so that the portion of the breakage guide wire 11 is not particularly deformed.

  The cardboard box 10 according to the present embodiment is formed by bending the cardboard plate 12 cut into a predetermined shape as shown in FIG. 2 along the folding lines 13a and 13b. As shown also in (b), a pair of short side part side plate 15 with which inner flaps 14a and 14b are connected, a pair of long side part side plate 17 with which outer flaps 16a and 16b are connected, and each adjacent A side part 19 having an octagonal cross section consisting of four oblique side part side plates 18 interposed between the short side part side plate 15 and the long side part side plate 17, a pair of top side flaps 14 a and a pair of top parts. The top surface portion 20 formed by the outer surface portion flap 16a, and the bottom surface portion 21 formed by the pair of bottom surface portion inner flaps 14b and the pair of bottom surface portion outer flaps 16b, and at least one of the top surface portions. From the flap 16a over the long side portion side plate 17 is a box of cardboard in which a pair of break induction lines 11 are provided. The top surface inner flap 14a provided continuously with the upper end of the short side plate 15 and the bottom inner flap 14b provided continuously with the lower end of the short side plate 15 have both side edges 22 on both sides. The long side portion side plate 17 has a shape that is arranged along the inner side surface (see FIGS. 3A and 3B), and the four oblique side portion side plates 18 each have a long side portion side. It is provided in a state of being bent at a bending angle θ of 20 ° to 40 ° with respect to the face plate 17.

  In the present embodiment, the pair of break guide lines 11 formed from the top surface outer flap 16a to the long side surface plate 17 is extended from the edge portion of the butt end edge 23 of the top surface outer flap 16a. It is provided so as to extend obliquely outwardly toward the side portion side plate 17.

  The cardboard box 10 of this embodiment is formed by using a single cardboard board 12 as shown in FIG. The cardboard board 12 can be easily obtained by punching and cutting, for example, so as to have a predetermined shape in which the cardboard box 10 is developed. Further, the corrugated cardboard 12 is provided with a vertical fold line 13a, a horizontal fold line 13b, or a cut or cut out at an appropriate location by performing a crease process or a cut process. The cardboard box 10 can be easily assembled so as to have a desired three-dimensional shape to be described later.

  In the present embodiment, the corrugated cardboard plate 12 is disposed on the left side in FIG. 2 on the left side of one of the long rectangular side plates 17 on the left side in the shape of a vertically long strip through a vertical folding line 13a. Are connected to each other on the right side via a vertical fold line 13a, and a vertically long band interposed between the short side wall 15 and the short side wall 15 '. A plate-shaped oblique side plate 18 is provided continuously. In addition, a top surface outer flap 16a is continuously provided above one of the long side surface plates 17 via a lateral folding line 13b. Further, a bottom-side outer flap 16b is provided below the one long side portion side plate 17 via a lateral folding line 13b.

  On the right side of one short side plate 15 is a slanted side of a vertically long strip that is interposed between the other long side plate 17 of a horizontally long rectangle via a vertical folding line 13a. A face plate 18 is provided continuously. In addition, a top surface inner flap 14a is continuously provided above one short side plate 15 via a lateral folding line 13b. Further, an inner bottom surface flap 14b is continuously provided below the one short side plate 15 via a lateral folding line 13b.

  On the right side of the other long side portion side plate 17 is the oblique side portion of the vertically long strip plate interposed between the other short side portion side plate 15 of the vertically long rectangle via the vertical folding line 13a. A face plate 18 is provided continuously. In addition, a top surface outer flap 16a is continuously provided above the other long side surface plate 17 via a lateral fold line 13b. Furthermore, a bottom surface portion outer side flap 16b is provided below the other long side surface plate 17 via a lateral fold line 13b.

  The right side of the other short side plate 15 is overlapped with the superimposed oblique side plate 18 'via the vertical folding line 13a and the oblique side plate 18' together with the superimposed oblique side plate 18 '. A vertically long strip-shaped overlapping oblique side joining plate 18 ″ is formed. The upper side of the other short side portion side plate 15 is connected to the ceiling via a lateral folding line 13 b. An in-plane flap 14a is provided continuously, and a bottom-side flap 14b is provided below the other short side plate 15 via a lateral fold line 13b.

  In the present embodiment, the top surface portion outer flap 16a continuously provided above the pair of long side surface plates 17 has the top surface portion 20 in a state in which the front edge portion 23 is abutted when the cardboard box 10 is assembled. Is extended from the lateral fold line 13b in such a length that can be formed (see FIG. 1). The base end portion of the top surface outer flap 16a adjacent to the lateral fold line 13b is extended from both sides to both sides so that when the cardboard box 10 is assembled, A hypotenuse portion 24 is formed.

  Further, in the top surface portion outer flap 16a continuously provided above the other long side portion side plate 17 of the pair of long side portion side plates 17, a pair of breaking guide wires 11, for example, Y-shaped cuts are formed. The diagonally extending portion 11a formed by a perforated line extends obliquely outwardly from the edge portion of the tip edge portion 23 toward the lateral fold line 13b between the side plate 17 and the long side portion. Provided. In the present embodiment, the obliquely extending portion 11a is formed up to the joint angle portion between the lateral fold line 13b and the longitudinal fold line 13a in the other long side portion side plate 17, For example, an L-shaped notch of the pair of break guide lines 11 formed along the longitudinal fold line 13a between the other long side plate 17 and the oblique side plate 18 at the joint angle portion. Are respectively connected to the longitudinally extending portions 11b made of perforations.

  The bottom surface portion outer flap 16b provided below the pair of long side surface plates 17 is long enough to form the bottom surface portion 21 in a state where the front edge portion 23 is abutted when the cardboard box 10 is assembled. It extends from the lateral fold line 13b (see FIG. 3B). The base end portion of the bottom outer flap 16b that is close to the lateral fold line 13b extends from both sides to both sides so that when the cardboard box 10 is assembled, A hypotenuse portion 24 is formed. Further, when the corrugated cardboard box 10 is assembled at the ends of the bottom outer flap 16b away from the lateral fold line 13b, the alignment step by the top inner flap 14a, which will be described later, is assembled at the ends on both sides thereof. A notch recess 27 is provided for providing the bottom surface portion 21 with an alignment step recess 26 (see FIG. 3B) to which the projection 25 (see FIG. 1) is locked.

  In the present embodiment, the top surface inner flap 14a provided continuously above the pair of short side surface plates 15 is a state in which the front edge of the corrugated cardboard 12 is aligned with the front edge 23 of the top outer flap 16a. Cut by. When the corrugated cardboard box 10 is assembled, the top surface inner flap 14a is formed into a shape that fits inside the oblique side portion side plate 18 on both sides and the long side portion side plate 17 on both sides, and on both sides of the tip side portion. The edge portion 22 is formed in a shape that can be arranged in a state of being in contact with the inner side surface along the inner side surface of the long side surface plate 17 on both sides. In addition, a substantially U-shaped cut 28 is formed in the top surface inner flap 14a from the lateral fold line 13b between the short side plate 15 and the distal side plate 15 toward the distal end. The portion is a tongue-shaped piece 29 for providing the alignment step convex portion 25.

  When the cardboard box 10 is assembled, the tongue-shaped piece 29 is raised with respect to the top surface inner flap 14a, and the top surface outer flap 16a is overlapped on the outer side of the top surface inner flap 14a to form the top surface portion 20, By positioning the tongue-shaped piece 29 so as to overlap the upper surface of the top surface outer flap 16a, the alignment step convex portion 25 can be provided in a portion continuous with the short side surface plate 15 of the top surface portion 20. When stacking the cardboard boxes 10 up and down, the alignment step concave portion 26 formed on the bottom surface portion 21 of the upper cardboard box 10 is replaced with the alignment step convex portion 25 formed on the top surface portion 20 of the lower cardboard box 10. By locking, the cardboard boxes 10 can be easily positioned up and down, and the cardboard boxes 10 can be stacked in a stable state.

  The bottom surface inner flap 14b that is provided below the pair of short side surface plates 15 is cut in the cardboard plate 12 with its front edge aligned with the front edge 23 of the bottom outer flap 16b. The bottom flap 14b is formed into a shape that fits inside the oblique side plate 18 and the long side plate 17 on both sides when the cardboard box 10 is assembled, and both side edges of the tip side portion thereof. The part 22 is formed in a shape that can be disposed in a state of being in contact with the inner side surface along the inner side surface of the long side part side plate 17 on both sides.

  In this embodiment, on the corrugated cardboard 12, the cut tape 30 continuously connects the short side plate 15, the long side plate 17, and the oblique side plate 18 over the entire length in the lateral direction. And is provided to cross.

  In order to assemble the cardboard box 10 using the above-mentioned cardboard board 12, the cardboard board 12 is bent via the longitudinal fold line 13a, and the overlapping oblique side joining plate 18 "is attached to the overlapping oblique side part 18 '. The cardboard plate 12 is formed into a cylindrical shape with an octagonal cross section by overlapping and bonding with an adhesive etc. Thereafter, the pair of bottom flaps 14b are bent inward via the lateral folding line 13b. The pair of bottom surface outer flaps 16b are folded inward so as to overlap the folded bottom surface inner flap 14b, and joined to the bottom surface inner flap 14b in a state in which these leading edge portions 23 are in contact with each other. The bottom surface portion 21 is formed.

  After the bottom surface portion 21 is formed, the top surface portion 20 is formed after accommodating the contents inside. The top surface portion 20 is configured such that the pair of top surface portion inner flaps 14a are folded inward with the tongue-shaped piece 29 raised via the lateral fold line 13b and overlapped with the folded top surface portion inner flap 14a. In addition, the pair of top surface outer flaps 16a can be bent inward, and the tip edge portions 23 can be joined to the top surface inner flap 14a in a state of abutting each other. After the top surface portion 20 is formed, the alignment step convex portion 25 is formed by placing the raised tongue-like piece 29 on the top surface of the top surface outer flap 16a.

  Thus, as shown in FIG. 1, both side edges 22 of the top surface inner flap 14a and the bottom surface inner flap 14b are arranged along the inner surfaces of the long side plate 17 on both sides, and four oblique sides. The side surface plate 18 is provided in a state of being bent at a bending angle θ of 20 ° to 40 ° with respect to the long side surface plate 17, respectively, a side surface portion 19 having an octagonal cross section, a top surface portion 20, and The corrugated cardboard box 10 of the present embodiment including the bottom surface portion 21 is formed.

  Here, the bend angle θ of each oblique side portion side plate 18 with respect to the long side portion side plate 17 needs to be 20 ° to 40 °, and is particularly preferably 30 °. If the bending angle θ of each oblique side plate 18 with respect to the long side plate 17 is too large, the vertical compressive load applied to the cardboard box 10 by the vertical folding line 13a on the short side plate 15 side. If it is too small, the shape of the corrugated cardboard box approaches the hexahedron shape, and the sheet area of the cardboard plate for forming the corrugated cardboard box 10 increases. As a result, there is a problem that the cost increases.

  And according to the corrugated cardboard box 10 of this embodiment provided with the above-mentioned structure, it connects with the front-end edge part 23 of the outer flaps 16a and 16b connected with the long side part side plate 17, and the short side part side plate 15. The cardboard board 12 can be efficiently cut by aligning the front end edges of the inner flaps 14a and 14b, and the strength against external force is improved, so that the cardboard box 10 is deformed in the conveying process even when the breaking guide wire 11 is provided. Can be effectively avoided.

  That is, according to the present embodiment, as described above, the long side portion side without protruding the inner flap continuous with the short side surface plate longer than the outer flap continuous with the long side surface plate. The front edge 23 of the outer flaps 16a, 16b provided continuously with the face plate 17 and the front edge of the inner flaps 14a, 14b provided continuously with the short side plate 15 are aligned to efficiently cut the corrugated cardboard 12. Both side edges 22 of the top surface inner flap 14a and the bottom surface inner flap 14b are arranged along the inner surfaces of the long side surface plates 17 on both sides, and the oblique side surface plates 18 are long. Since it is provided in a state where it is bent at a bending angle θ of 20 ° to 40 ° with respect to the side portion side plate 17, the external force is reduced by the action of reducing the stress by increasing the area of the short side portion side plate 15. Improved strength against Te, cardboard box 10 it becomes possible to effectively avoid the deformation conveying process even in the case where the break induction line 11.

  Further, in the present embodiment, the pair of break guide lines 11 formed from the top surface outer flap 16a to the long side surface plate 17 extends from the edge portion of the butt end edge 23 of the top surface outer flap 16a to the long side. Since it is provided so as to extend obliquely outwardly toward the side plate 17, the external force received by the fracture guide wire 11 is received by receiving the external force diagonally with respect to the external force received from the short side plate 15. Due to the action of being reduced, it is possible to more effectively avoid deformation of the cardboard box 10 during the conveyance process.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, a pair of break guide lines formed from the top surface outer flap to the long side plate are obliquely opened outward from the edge portion of the butt end edge of the top surface outer flap toward the long side plate. It is not always necessary to extend and be provided, and it may be provided to extend in a direction perpendicular to the lateral folding line.

DESCRIPTION OF SYMBOLS 10 Corrugated cardboard box 11 Breaking induction line 11a Diagonal extension part 11b Longitudinal extension part 12 Corrugated cardboard board 13a Longitudinal folding line 13b Lateral folding line 14a Top surface inner flap 14b Bottom surface inner flap 15 Short side surface board 16a Surface outside flap 16b Bottom surface outside flap 17 Long side portion side plate 18 Slanted side portion side plate 19 Side surface portion 20 Top surface portion 21 Bottom surface portion 22 Side edge portion 23 of the bottom surface portion inner flap Flank tip edge portion θ of the top surface portion outer flap Bending angle with respect to side plate of long side of face plate

Claims (2)

A pair of short side plates with a continuous inner flap, a pair of long side plates with a continuous outer flap by folding a cardboard board cut into a predetermined shape along a fold line, And a side portion having an octagonal cross section consisting of four oblique side portion side plates interposed between the adjacent short side portion side plate and the long side portion side plate, a pair of top surface inner flaps, and a pair of ceiling members. The top surface portion formed by the outer surface portion flap, the bottom surface portion formed by the pair of bottom surface portion inner flaps and the pair of bottom surface portion outer flaps, and the length from at least one of the upper outer surface portion flaps A cardboard box provided with a pair of break guide wires across the side face plate,
The top surface inner flap that is continuous to the upper end of the short side plate and the bottom inner flap that is connected to the lower end of the short side plate have both side edges on both sides. The long side portion side plate has a shape arranged along the inner side surface, and the four oblique side portion side plates are each bent at an angle of 20 ° to 40 ° with respect to the long side portion side plate. A cardboard box placed in a bent state.   The pair of break guide lines formed from the top surface outer flap to the long side surface plate is directed from the edge portion of the butt end edge of the top surface outer flap toward the long side surface plate. The cardboard box according to claim 1, wherein the cardboard box is provided so as to extend obliquely to the outside opening.

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