JP2017095137A - Packing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing box capable of preventing bending of side wall plates and easily performing unpacking work.SOLUTION: A packing box 1 is a so-called wrap-around case, and strip-like breaking parts 14 are each disposed on side wall plates 4 and 5. The strip-like breaking parts can make the side wall plates break in a strip shape in right and left directions from a breaking start part 16 which starts breaking formed on the side wall plates when unpacked. The strip-like breaking parts 14 are formed by a lower breakable line 13 and an upper breakable line 12. A curved breaking part 13a which extends in a curved shape is disposed on at least a part of the lower breakable line 13. An inclined breaking part 12b slantingly extending toward an upper side edge direction of the side wall plates 4 and 5 is disposed on the upper breakable line 12 in such a manner that the strip widths of the strip-like breaking parts are gradually larger toward right and left side edges from the breaking start part 16.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging box in which a breakable line for opening is formed in a body part.

  Conventionally, a packaging box called a wrap-around case is known in which contents are placed on a punched cardboard board, the cardboard board is folded so as to wrap the contents, and packaging of the contents is completed at the same time as the box is assembled. ing.

  In this type of packaging box, a breakable line is formed on the side wall plate so that unpacking can be easily performed. As this type of breakable line, there is a so-called zipper comprising two discontinuous cuts extending in parallel with a predetermined width. The two cuts constituting the zipper can be easily unpacked by providing a break start portion at a part thereof and cutting it into a strip shape using the break start portion as a clue.

  However, the breakable line in this type of packaging box is formed by cuts arranged on the same straight line on both sides of the side wall plate, so that it is easier to bend than the crease line. When the side wall plate is erected, there is an inconvenience that the breakable wire is bent without being able to withstand the load of the top plate.

  As an improved packaging box that eliminates such inconvenience, the breakable line provided on the side wall plate is parallel to the first straight broken portion and the extended line of the first straight broken portion. And a connecting break portion that connects the end portion of the first straight break portion and the end portion of the second straight break portion adjacent to the end portion so as to be breakable (patent) Reference 1).

  According to this improved packaging box, the first straight line break part and the second straight line break part are not arranged in the same straight line, so that the first straight line break part and the second straight line break part are between them. The level | step difference which cross | intersects a bending direction arises and can bend the said breakable line at the time of an assembly.

JP 2003-165533 A

  However, when the improved packaging box is broken in the left-right direction along the first linear breakage portion with the breakage start portion as a clue, the connection breakage portion intersects the left-right direction. Therefore, the zipper is cut at the joint between the first straight broken portion and the connecting portion, and unpacking may be difficult.

  In view of the above points, an object of the present invention is to provide a packaging box that can prevent a breakable line of a side wall plate from being bent and can easily perform an unpacking operation.

  In order to achieve such an object, the packaging box of the present invention is formed of corrugated paperboard, and is connected to the front and rear side edges of the rectangular bottom plate via a fold line, and is folded upward along the fold line. A pair of side wall plates that are erected and a ceiling that is connected to the upper edge of one side wall plate via a crease line and is bent in parallel to the bottom plate along the crease line toward the other side wall plate. And a pair of inner flaps connected to each of the left and right side edges of the one side wall plate and the other side wall plate via a crease line and bent inward along the crease line, and the bottom plate And a pair of boxes connected to the left and right side edges of the top plate via a crease line, respectively, folded inward along the crease line from above and below, and an outer flap fixed to the inner flap. The side wall plate has a A strip-shaped break portion that allows the sidewall plate to be broken in the left-right direction from the break-starting portion formed in the sidewall plate is provided, and the strip-shaped break portion has a discontinuous cut at its lower end. The lower breakable line extends and the upper breakable line has a discontinuous cut extending at the upper end, and at least a part of the lower breakable line is provided with a curved broken portion extending in a curved shape, or a straight line A first linear fracture portion extending in a direction, a second linear fracture portion extending in a linear direction parallel to an extension line of the first linear fracture portion, an end portion of the first linear fracture portion, and the end portion There is provided a connection break portion that connects the end portions of the adjacent second straight break portions so as to be breakable, and the upper breakable line has the band-like break from the break start portion toward the left and right side edges. Direction of the upper edge of the side wall plate so that the band width of the portion gradually increases Wherein the inclined breaking portion extending toward an inclined is provided.

  In the packaging box of the present invention, the lower breakable line provided on the side wall plate is parallel to the curved portion, or the first straight broken portion and the extended line of the first straight broken portion. It is configured with a straight break portion. Thereby, since the lower fracture | ruptureable line is not arrange | positioned in the same straight line form, when assembling, the bending of the said fracture | ruptureable line can be prevented.

  Similarly, the upper breakable line provided on the side wall plate is also configured to have inclined broken portions from the break starting portion toward the left and right side edges, and is not arranged in the same straight line. In this case, it is possible to prevent the breakable line from being bent.

  And since the upper part breakable line provided in the said side wall board has this inclined fracture | rupture part, since the strip | belt width of a strip | belt-shaped fracture | rupture part becomes large gradually, when fracture | ruptures, a strip | belt-shaped fracture | rupture part cuts in the middle Can be prevented, and the side wall plate can be smoothly broken in the left-right direction.

  Moreover, the packaging box of this invention WHEREIN: It is preferable that the inner flap breakable line which can break this inner flap continuously from the said lower breakable line is formed in each said inner flap.

  According to this, the inner flap can also be broken through the side wall plate simply by pulling the belt-like fracture portion in the left-right direction from the fracture start portion. Therefore, when the both side wall plates are broken, the upper half and the lower half can be smoothly separated, and the lower half becomes a tray shape by taking the upper half. The packaged contents can be displayed for sale with the contents in the lower half.

  In the packaging box of the present invention, the lower breakable line includes at least a pair of curved broken parts formed on each side wall plate, and the pair of curved broken parts includes the lower breakable line and the break starting part. It is preferable that it is formed point-symmetrically around the intersection with.

  According to this, since the curved fracture portion is provided point-symmetrically on the lower fracture line of the side wall plate, the side wall of the lower half portion can be wave-shaped, so that a good appearance can be obtained.

The perspective view which shows one Embodiment of the packaging box of this invention. The top view of the expansion | deployment state of the packaging box of FIG. FIG. 3A is an explanatory side view showing an unpacking process (starting stage) of the packaging box of FIG. 1. FIG. 3B is an explanatory side view showing an unpacking process (end stage). FIG. 4A is a perspective view showing a lower half portion after the packaging box is unpacked. FIG. 4B is a plan view showing an upper half portion after the packaging box is unpacked.

  An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the packaging box 1 of the present embodiment is formed in a rectangular parallelepiped shape, and contents (not shown) are accommodated therein.

  The packaging box 1 is a so-called wrap-around case, and is assembled by corrugated paperboard 2 formed by punching in a generally rectangular shape as shown in FIG.

  The corrugated paperboard 2 includes a bottom plate 3, a front side wall plate 4 connected to the front side edge of the bottom plate 3 via a fold line a, and a rear side wall connected to the rear side edge of the bottom plate 3 via a fold line b. A plate 5 and a top plate 6 connected to the upper edge of the rear side wall plate 5 via a crease line c are provided. Further, an adhesive piece 7 is connected to the upper edge of the front side wall plate 4 via a crease line d.

  A pair of inner flaps 8 and 9 are connected to the left and right side edges of the front side wall plate 4 and the rear side wall plate 5 through fold lines e and f, respectively, and the bottom plate 3 and the top plate 6 are respectively connected. A pair of outer flaps 10 and 11 are connected to the left and right side edges of the left and right edges via crease lines g and h.

  Further, an upper breakable line 12 that can be broken continuously and a lower breakable line 13 that can be broken continuously are formed on each of the front side wall plate 4 and the rear side wall plate 5. The upper breakable line 12 and the lower breakable line 13 are each formed as a band-shaped broken portion 14 that extends substantially in the left-right direction so that a region sandwiched between both is broken into a band shape. A so-called zipper constituted by a plurality of cuts whose one ends bend inward is adopted for the band-shaped fracture portion 14.

  In the band-shaped break portion 14, a break start portion 16 is formed in the vicinity of the center in the left-right direction so that the upper breakable line 12 and the lower breakable line 13 are connected to each other by a cut line 15 up and down so as to be freely separated into a tongue shape. Has been. The cut line 15 is not limited to the vicinity of the center in the left-right direction, but is preferably formed at a position where the upper breakable line 12 and the lower breakable line 13 are relatively close to each other.

  Next, the upper breakable line 12 and the lower breakable line 13 will be described using the front side wall plate 4. Although the upper breakable line 12 and the lower breakable line 13 are also formed on the rear side wall plate 5, the description thereof is omitted because they are formed symmetrically with respect to the bottom plate 3. It should be noted that the upper breakable line 12 and the lower breakable line 13 formed on the front side wall plate 4 and the rear side wall plate 5 may appear point-symmetrically around the center of the bottom plate 3 and may not be symmetrical. Also good.

  The upper breakable line 12 is in contact with the cut line 15 and is separated from each other toward the upper edge of the front side wall plate 4 from the respective end portions of the central straight portion 12a toward the upper edge of the front side wall plate 4 The inclined portion 12b extending in an inclined manner and the upper straight portion 12c extending from the front end portion of the inclined portion 12b to the adjacent left and right side edges of the front side wall plate 4 are formed.

  The lower breakable line 13 includes a curved portion 13a extending in a convex shape toward the upper edge from the contact point with the cut line 15 to the right edge of the front side wall plate 4, and the front side wall plate from the contact point with the cut line 15. 4 to the left edge of 4 and is formed by a curved portion 13a extending in a convex shape toward the lower edge. The left and right curved portions 13 a are formed point-symmetrically around the contact point with the cut line 15, and the entire lower breakable line 13 forms a wave shape.

  Inner flap breakable lines 17 that can be continuously broken are formed on the inner flaps 8 on both sides of the front side wall plate 4 and the inner flaps 9 on both sides of the rear side wall plate 5, respectively. The inner flap breakable line 17 extends from each end of the lower breakable line 13 to each tip of the adjacent inner flaps 8 and 9, and is formed in a shape that is continuously broken with the lower breakable line 13. ing.

  Further, as shown in FIG. 1, the inner flap breakable line 17 is formed so as to extend along the respective front end portions of the outer flaps 10 on both sides of the bottom plate 3 in the state formed as the packaging box 1. . The position of the inner flap breakable line 17 is not limited to this, but is preferably provided in a region sandwiched between the distal end portion of the outer flap 11 of the top plate 6 and the distal end portion of the outer flap 10 of the bottom plate 3. .

  As shown in FIG. 2, outer flap breakable lines 18 that can be continuously broken from the front and rear ends toward the inside along the fold line h are formed on the left and right side edges of the top plate 6. As shown in FIG. 1, the outer flap breakable line 18 is formed in a shape that is continuously broken with the upper breakable line 12 in the state formed as the packaging box 1.

  As shown in FIG. 2, both ends of the outer flap breakable line 18 facing each other on each crease line h are provided at a predetermined interval. That is, the vicinity of the central portion of each of the left and right side edges of the top plate 6 is an unprocessed portion 18a in which no breakable line is formed.

  In the present embodiment, since the outer flap breakable line 18 is formed to have a length that substantially matches the inner flap breakable line 17, the unprocessed portion 18a is formed in the packaging box 1 as shown in FIG. In the state formed as above, it is disposed above a region sandwiched between both tip portions of the opposed inner flaps 8 and 9.

  When the packaging box 1 shown in FIG. 1 is formed from the corrugated board 2 shown in FIG. 2 having the above configuration, a plurality of contents (not shown) are arranged on the bottom plate 3 in the state of the cardboard board 2 shown in FIG. First, the front side wall plate 4 and the rear side wall plate 5 are erected through the fold lines a and b. At this time, since the upper breakable line 12 is not arranged in a straight line, the front sidewall plate 4 and the rear sidewall plate 5 can be erected in a state in which bending from the upper breakable line 12 is prevented. Similarly, since the lower breakable line 13 and the inner flap breakable line 17 connected to both ends thereof are not arranged in a straight line, the front side wall plate 4 is prevented from being bent from the lower breakable line 13. And the rear side wall board 5 can be stood up.

  Next, as shown in FIG. 1, the inner flaps 8, 9 on both sides of the side wall plates 4, 5 are bent along both side edges of the bottom plate 3 through the fold lines e, f, and are connected to both sides of the bottom plate 3. The provided outer flap 10 is erected through the crease line g, and is bonded to the outer surface of each of the inner flaps 8 and 9 via an adhesive.

  Subsequently, the adhesive piece 7 is bent horizontally via the crease line d, the top plate 6 is bent parallel to the bottom plate 3 via the crease line c, and the top plate 6 is bonded to the adhesive piece 7 via an adhesive. Is done.

  Thereafter, the outer flaps 11 continuously provided on both sides of the top plate 6 are bent downward via the crease line h, and are adhered to the outer surfaces of the inner flaps 8 and 9 via an adhesive so that the contents can be packaged. Upon completion, the packaging box 1 shown in FIG. 1 is formed.

  Next, the unpacking operation | work of the packaging box 1 of this embodiment is demonstrated.

  When unpacking the packaging box 1, as shown in FIG. 3A, first, a finger is inserted into the breaking start portion 16 of the front side wall plate 4, and the portions released in the form of tongues are gripped and pulled left and right respectively. The band-shaped fracture part 14 is fractured.

  At this time, the band-shaped fracture portion 14 is formed so that the band width gradually increases because the upper breakable line 12 includes the inclined portion 12b. Can be prevented.

  When the portion released in the form of a tongue piece is pulled left and right after the rupture of the strip-shaped fracture portion 14 is completed, as shown in FIG. 3B, the lower breakable line 13 that forms the lower end of the strip-shaped fracture portion 14 is Since each inner flap breakable line 17 continuously extends from each end, the breakage proceeds along each inner flap breakable line 17 and the inner flap 8 is divided into an upper part and a lower part.

  On the other hand, the upper breakable line 12 that forms the upper end of the band-shaped fracture portion 14 is not directly connected to the outer flap breakable line 18, but the band-shaped fracture portion 14 is located above the inner flap 8 via the fold line e. And the upper part of the inner flap 8 and the outer flaps 11 on both sides of the top plate 6 are bonded together. Therefore, when the portion released in the form of a tongue piece is pulled left and right even after the rupture of the belt-like rupture portion 14 is completed, as shown in FIG. The breakage progresses along each.

  The length of the inner flap breakable line 17 and the length of the outer flap breakable line 18 substantially coincide with each other, and the front end portion of the inner flap breakable line 17 and the front end portion of the outer flap breakable line 18 are in the height direction. Therefore, the inner flap breakable line 17 is broken to the tip of the inner flap 8 and the inner flap breakable line 17 is completely broken. At the same time, the outer flap breakable line 18 is the end of the unprocessed portion 18a. The outer flap breakable line 18 is also broken.

  In the same manner, the strip-like fracture portion 14, the inner flap breakable line 17 and the outer flap breakable line 18 are broken from the fracture start portion 16 of the rear side wall plate 5 (see FIG. 2).

  Thereby, the upper part of the packaging box 1 can be easily separated from the lower part by lifting the upper part.

  As shown in FIG. 4A, the lower portion of the packaging box 1 has a bottom plate 3 and has a tray shape surrounded by two outer flaps 10 and lower portions of the front and rear side wall plates 4 and 5 on four sides.

  Therefore, the packaging box 1 can be easily transported together with the lower part in the form of a tray, with the contents visible from the outside and removable. Particularly, in the packaging box 1 in the present embodiment, since the lower breakable line 13 has a wave shape, the lower portions of the front and rear side wall plates 4 and 5 broken along the lower breakable line 13 are also formed in a wave shape. Excellent cosmetics.

  4B, the upper portion of the packaging box 1 is bonded to the upper portion of the rear side wall plate 5 connected to the rear side edge of the top plate 6 via the crease line c and the front side edge of the top plate 6. An upper portion of the front side wall plate 4 bonded through the piece 7, a pair of outer flaps 11 connected to the left and right side edges of the top plate 6 via a fold line h, and an upper portion and a lower portion of each outer flap 11 The inner flaps 8 and 9 are bonded to each other, and the band-shaped fracture portions 14 of the front and rear side wall plates 4 and 5 are connected to the inner flaps 8 and 9 through fold lines e and f.

  At this time, the crease line h on the left and right side edges of the top plate 6 is broken along the outer flap breakable line 18, but the top plate 6 and the outer flap 11 are connected by the presence of the unprocessed portion 18a. Therefore, only one waste product can be used.

  Note that the lower breakable line 13 of the present invention is not limited to this embodiment, and is, for example, parallel to a first straight broken portion that extends linearly in the left-right direction and an extension line of the first straight broken portion. A second linear break portion extending linearly, and an end portion of the first straight break portion and an end portion of the second straight break portion adjacent to the end portion so as to be breakable. May be configured to include a portion.

  That is, the lower breakable line 13 and the upper breakable line 12 need not be in a straight line from the left end to the right edge. For example, the upper breakable line 12 may be provided with a curved portion. Further, the lower breakable line 13 and the upper breakable line 12 need only be gradually increased in width in the left-right direction as the band-shaped breakable part 14, so that the lower breakable line 13 is separated from the upper breakable line 12. You may provide the inclination part extended in a direction.

  Further, in the present embodiment, a zipper having a plurality of cuts whose one ends are bent is adopted for the band-shaped fracture portion 14, but the present invention is not limited to this. For example, although not shown, each breakable line 12, 13, 17, 18 is used. May be constituted by so-called perforations by a plurality of straight cuts.

DESCRIPTION OF SYMBOLS 1 ... Packaging box, 3 ... Bottom plate, 4 ... Front side wall plate, 5 ... Rear side wall plate, 6 ... Top plate, 8, 9 ... Inner flap, 10, 11 ... Outer flap, 12 ... Upper breakable line, 12b ... Inclination Rupture part, 13 ... lower breakable line, 13a ... curved part (curved rupture part), 14 ... strip-like rupture part, 16 ... break start part, 17 ... inner flap breakable line, a, b, c, e, f, g, h ... crease line.

Claims (3)

Formed by corrugated paperboard,
A pair of side wall plates that are connected to the front and rear side edges of the rectangular bottom plate via crease lines, and are bent upward along the crease lines;
A top plate connected to the upper edge of one side wall plate via a crease line, and folded in parallel to the bottom plate along the crease line so as to go to the other side wall plate;
A pair of inner side flaps connected to each of the left and right side edges of the one side wall plate and the other side wall plate via a crease line and folded inward along the crease line;
A pair of outer side flaps that are connected to each of the left and right side edges of the bottom plate and the top plate via a crease line, bent inward along the crease line, and fixed to the inner flap. In the packaging box,
Each of the side wall plates is provided with a band-shaped break portion that allows the side wall plate to be broken into a band shape in the left-right direction from a break start portion that starts breakage formed in the side wall plate at the time of unpacking.
The band-shaped break portion is formed by a lower breakable line extending a discontinuous cut at a lower end thereof and an upper breakable line extending a discontinuous cut at an upper end thereof,
At least a part of the lower breakable line is provided with a curved broken portion extending in a curved shape, or in parallel with a first straight broken portion extending in a linear direction and an extension line of the first straight broken portion A second straight break portion extending in a straight direction, an end portion of the first straight break portion, and a connecting break portion that connects the end portion of the second straight break portion adjacent to the end portion so as to be breakable. Provided,
The upper breakable line has an inclination extending incline toward the upper edge direction of the side wall plate so that the band width of the band-like breakage portion gradually increases from the break start portion toward the left and right side edges. A packaging box having a breaking portion. The packaging box according to claim 1,
Each of the inner flaps is formed with an inner flap breakable line that allows the inner flap to be broken continuously from the lower breakable line. The packaging box according to claim 1 or 2,
The lower breakable line includes at least a pair of curved broken portions formed on each side wall plate, and the pair of curved broken portions are point-symmetric about the intersection of the lower breakable line and the break starting portion. A packaging box characterized by being formed.