JP2016078871A - Packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress or prevent breakage of an opening operation part due to piling.SOLUTION: In a packaging box 10, inner flaps 18A, 18B and outer flaps 19A, 19B are provided continuously on an opening end of an outer peripheral wall (end walls 11A, 11B and side walls 12A, 12B), and these flaps 18A, 18B, 19A, 19B are firmly fastened, whereby the opening end is sealed. The outer flaps 19A, 19B are provided with an opening operation part 24 and an outer flap breaking part 29. The opening operation part 24 has a break line 25 which is extended over overlapping regions R1, R3 and non-overlapping regions r1, r2, and a fold line 28 which is continuous with one end 25b of the break line 25. The outer flap breaking part 29 extends from a tip side to a base end side, and breaks a bonding part 32 side and the opening operation part 24 side.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a packaging box with improved opening workability.

  Patent Document 1 describes a packaging box that includes an outer peripheral wall having a pair of end walls and a side wall, and an inner flap and an outer flap are connected to the open end of the outer peripheral wall. The pair of inner flaps is formed with a dimension that allows a predetermined gap to be formed between the tips of each other in a sealed state. The pair of outer flaps are formed with dimensions such that the tips of each other meet in a sealed state. When sealing the opening end of the outer peripheral wall with each flap, the inner flap is bent inward with respect to the end wall, and then the outer flap is bent inward with respect to the side wall. And hot melt resin is apply | coated to the outer side of the breaking line of an outer flap, and an outer flap and an inner flap are stuck (hot melt).

  An opening operation portion for performing an opening operation is formed at the center of the front end of the outer flap. The opening operation portion includes a folding line extending in parallel to the leading edge of the outer flap and a cutting line extending from both ends of the folding curve toward the leading edge. In addition, the outer flap is provided with a pair of break lines (single zippers) extending from the front edge to the both ends of the base end side continuous to the side wall so as to be positioned on both sides of the opening operation portion. When opening the packaging box, a finger is inserted into the opening operation portion at the center of the front end of the outer flap to provide an opening, and the outer flap is operated outward with the inner side of the outer flap. Accordingly, the outer flap is broken along the breaking line without removing the hot melt adhered to the outer flap and the inner flap, and the packaging box is opened.

  However, this type of packaging box is often stacked and arranged in a stacked state at the time of physical distribution for transporting goods or storage of goods. At this time, when the load (load) of the upper packaging box is applied to the opening operation portion of the lower packaging box, there is a problem that the opening operation portion opens or is torn. In this case, since the visibility of the printing performed on the surface of the packaging box is impaired, it is not preferable.

Japanese Patent Laid-Open No. 10-324327

  This invention makes it a subject to provide the packaging box which can suppress thru | or prevent that an opening operation part opens or torn by stacking | stacking.

  In order to solve the above-mentioned problem, the packaging box of the present invention is a packaging box in which an inner flap and an outer flap are connected to an opening end of an outer peripheral wall, and these flaps are fixed to seal the opening end. And a break line extending to the overlap region overlapped with the inner flap and a non-overlap region away from the inner flap, and a folding line provided in the non-overlap region so as to be continuous with one end of the break line. An operation portion, and an outer flap breaking portion that extends from a distal end side toward a proximal end side that is continuous with the outer peripheral wall and breaks the fixing portion side to which the inner flap and the outer flap are fixed, and the opening operation portion side. Provided.

  Specifically, the first and second end walls arranged opposite to each other, the first and second side walls arranged opposite to each other adjacent to each of the end walls, and the open ends of the end walls are connected to each other. 1st and 2nd inner flap, and the 1st and 2nd outer flap connected in a row by the opening end of each said side wall, adhering each said inner flap and each said outer flap, and sealing the said opening end In the packaging box, the break line extending to the first outer flap overlaps with the overlap region overlapped with the first inner flap and the non-overlapping region away from the first inner flap, and continues to one end of the break line. An opening operation portion having a folding line provided in the non-overlapping region, extending from the distal end side toward the proximal end side continuous to the first side wall, and fixing the first inner flap and the first outer flap. Breaking the outer flap that breaks the adhering part side and the opening operation part side And the part is provided. More specifically, the opening operation portion and the outer flap breaking portion are not provided on the second inner flap side of the first outer flap, but are provided only on the first inner flap side of the first outer flap, and the cutting portion is minimized. It is preferable to prevent the visibility of printing applied to the surface of the packaging box from being impaired.

  The outer flap of the packaging box is provided with a break line for forming the opening operation portion so as to extend over the overlapping region and the non-overlapping region with the inner flap. Therefore, since a part of the opening operation part is located on the inner flap, when an external force is applied to press the opening operation part inward, the inner flap prevents the inward deformation of the opening operation part. Therefore, even if the packaging boxes are stacked in a stacked state during distribution or storage, it is possible to suppress the breaking line from breaking and opening the opening operation part. As a result, it is possible to prevent the visibility of printing applied to the outer flap from being impaired.

  At the time of the opening operation, the opening operation portion is pushed inward, and the outer flap is broken along the breaking line and bent along the folding line. Thereby, an opening part is formed, changing a part of opening operation part superimposed on the inner flap. Then, by hooking a finger on the inner surface side of the outer flap and operating it outward, the outer flap is broken along the outer flap breaking portion, and the open end of the outer peripheral wall is opened. At this time, the operator's hand does not feel pain because the operator's hand is hit by a bent edge along the folding line, not by the edge of the outer flap or the breaking edge by the breaking line.

  In this packaging box, it is preferable that the opening operation portion is provided on the distal end side of the outer flap and the outer flap breaking portion is provided so as to extend from the opening operation portion toward the proximal end side. In this case, it is more preferable to provide the folding line of the opening operation portion and at least the front end side of the outer flap breaking portion so as to be positioned on a straight line. Thus, if it is set as the structure which an outer flap fracture | rupture part continues in an opening operation part, opening workability | operativity can be improved.

  At least the base end side of the outer flap fracture portion is formed in the overlapping region, and the inner flap and the outer flap are fixed to the distal end side of the outer flap from the outer flap fracture portion. If it does in this way, when a packaging box is laminated and arranged, it can control that a load is applied to an outer flap fracture part, and it is torn.

  In the packaging box of the present invention, since a part of the opening operation part is located on the inner flap, the opening operation part is prevented from being deformed inward by an external force, and the opening operation part is opened during distribution or storage. Can be suppressed. Therefore, it can prevent that the visibility of the printing performed on the surface of an outer flap is impaired. Also, the operator's hand feels pain when opening, because the operator's hand does not hit the edge of the outer flap or the break line due to the break line but the bent edge along the folding line of the opening operation part. There is no.

The perspective view of the packaging box of 1st Embodiment. The top view of the packaging box of 1st Embodiment. The perspective view which shows the 1st process at the time of opening. The perspective view which shows the 2nd process at the time of opening. The perspective view which shows the 3rd process at the time of opening. The top view which shows the blank of the packaging box of 1st Embodiment. The top view of the packaging box of 2nd Embodiment. The top view of the packaging box of 3rd Embodiment. The top view of the packaging box of 4th Embodiment. The top view of the packaging box of 5th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 shows a packaging box 10 according to a first embodiment of the present invention. The packaging box 10 includes an outer peripheral wall having a pair of end walls 11A and 11B and side walls 12A and 12B, and upper inner flaps 18A and 18B and upper outer flaps 19A and 19B connected to an upper opening end of the outer peripheral wall. An upper lid wall and a lower lid wall (see FIG. 6) composed of lower inner flaps 21A and 21B and lower outer flaps 22A and 22B provided in a row at the lower opening end of the outer peripheral wall. In the packaging box 10 of the present invention, in order to improve the opening workability, the opening operation portion 24 and the outer flap breaking portion 29 are located at positions biased to one upper inner flap 18A, 18B of each upper outer flap 19A, 19B. And are provided respectively.

  The packaging box 10 is formed by punching a paper cardboard sheet as a single blank shown in FIG. 6 by a known paper punching device. The corrugated board sheet has a configuration in which wavy shin is disposed between the front liner and the back liner. In the following description, terms indicating a specific direction or position (for example, terms including “up”, “down”, “side”, “end”, “top”, “bottom”) are used as necessary. These terms are used for easy understanding of the invention with reference to the drawings, and the technical scope of the present invention is not limited by the meaning of these terms.

  As shown in FIG. 6, the blank of the packaging box 10 is provided such that end walls 11A and 11B and side walls 12A and 12B constituting the outer peripheral wall are continuous in the lateral direction. These are formed in a rectangular shape, and are arranged in the order of a side wall (first side wall) 12A, an end wall (second end wall) 11A, a side wall (second side wall) 12B, and an end wall (first end wall) 11B from the left side. Has been. In the sealed state, the end walls 11A and 11B are arranged to face each other, and the side walls 12A and 12B are arranged to face each other adjacent to the end walls 11A and 11B. The side wall 12A located at the left end is connected with a margin wall 13 for adhering to the edge of the end wall 11B located at the right end. At the boundary portions of these walls 11A, 11B, 12A, 12B, and 13, there are provided first folding lines 14 made of general-purpose ruled lines formed by ruled so as to compress the thickness from the back liner side. Yes.

  On the back liner side of the blank, a cut tape 15 made of resin (polypropylene) is disposed between both ends in the lateral direction from the adhesive margin wall 13 to the end wall 11B. The cut tape 15 is attached to a corrugated cardboard sheet before punching a blank so as to extend in a direction orthogonal to the step direction. In the center in the lateral direction of the side walls 12A, 12B, a breaking operation portion 16 is provided so as to be positioned on the cut tape 15. The breaking operation unit 16 includes a pair of first cutting lines 16a and 16a extending along the cut tape 15, and a second cutting line 16b positioned between the first cutting lines 16a and 16a. These cutting lines 16a and 16b are formed by inserting blades from the back liner to the front liner. Each wall 11A, 11B, 12A, 12B, 13 can be broken so as to tear by gripping the knob portion located between the cutting lines 16a, 16b and operating it sideways.

  Moreover, the carrying part 17 for carrying is provided in the center of the horizontal direction of end wall 11A, 11B. The grip portion 17 includes a first cutting line 17a provided in a substantially U shape, folding lines 17b and 17b including general ruled lines extending inwardly upward from both ends of the first cutting line 17a, and the folding lines 17b, A second cutting line 17c provided between the end portions of 17b and a third cutting line 17d extending in the vertical direction over the cutting lines 17a and 17c are provided. The first cutting line 17a is formed with a non-cutting portion in which a blade is not put at a predetermined position. By pushing the inside surrounded by the cutting lines 17a, 17c, 17d and the folding line 17b inward, a gripping hole for conveyance is formed.

  Upper inner flaps 18A and 18B are connected to upper edges of the end walls 11A and 11B, and upper outer flaps 19A and 19B are connected to upper edges of the side walls 12A and 12B. A second folding line (opening end) 20 made of a general ruled line is provided at the boundary between the upper flaps 18A, 18B, 19A, 19B and the walls 11A, 11B, 12A, 12B. Further, lower inner flaps 21A and 21B are connected to the lower edges of the end walls 11A and 11B, and lower outer flaps 22A and 22B are connected to the lower edges of the side walls 12A and 12B. A third folding line 23 made of a general ruled line is provided at the boundary between these lower flaps 21A, 21B, 22A, 22B and the walls 11A, 11B, 12A, 12B.

  Each of the inner flaps 18A, 18B, 21A, 21B is formed with a dimension that allows a predetermined gap to be formed between the tips of the inner flaps 18A, 18B, 21A, 21B. Each of the outer flaps 19A, 19B, 22A, and 22B is formed with a size that abuts against the tips of the outer flaps 19B, 19A, 22B, and 22A that face each other in a sealed state. In this embodiment, the inner flaps 18A, 18B, 21A, and 21B and the outer flaps 19A, 19B, 22A, and 22B are all formed in a rectangular shape that protrudes in the vertical direction with the same dimensions.

  As shown in FIG. 2, at the time of sealing, the inner flaps 18A, 18B, 21A, 21B are bent inward with respect to the end walls 11A, 11B, and then the outer flaps 19A, 19B, 22A, Bend 22B. Then, as shown in FIG. 2 with a thin ink, adhesion of heat-melting resin or the like to the overlapping regions R1 to R4 where the inner flaps 18A, 18B, 21A, 21B and the outer flaps 19A, 19B, 22A, 22B overlap. The opening end of the packaging box 10 is sealed by applying and sticking (fixing) the agent.

  As shown in FIGS. 2 and 6, the upper outer flaps 19A and 19B include an opening operation portion 24 for forming an opening 33 for opening operation and an outer flap for breaking the upper outer flaps 19A and 19B. A breaking portion 29 is provided. The opening operation part 24 and the outer flap breaking part 29 are provided on the upper inner flap (first inner flap) 18B side adjacent to the upper outer flap (first outer flap) 19A in a sealed state, and the upper outer flap (first outer flap) (2 outer flap) 19B is provided on the side of the upper inner flap (second inner flap) 18A adjacent in a sealed state. That is, the four overlapping regions R1 to R4 formed by sealing the upper flaps 18A, 18B, 19A, and 19B are provided on the two overlapping regions R1 and R3, and the remaining two overlapping regions R2 and R4. It is not provided on the side.

  The unsealing operation part 24 has a non-overlapping region r1 between the overlapping regions R1, R3 of the upper flaps 18A, 18B, 19A, 19B and the leading ends of the upper inner flaps 18A, 18B on the tip side of the upper outer flaps 19A, 19B. , R2. The opening operation unit 24 includes a breaking line 25 extending over the overlapping regions R1, R3 and the non-overlapping regions r1, r2, and a folding line 28 extending from the end (one end) 25b of the breaking line 25 into the non-overlapping regions r1, r2. Is provided. An opening operation portion 24 for forming the opening portion 33 is defined by the leading edge of the upper outer flaps 19A and 19B, the breaking line 25, and the folding line 28.

  The breaking line 25 is formed in a substantially C shape extending from the non-overlapping regions r1 and r2 to the overlapping regions R1 and R3, turning inside the overlapping regions R1 and R3, and extending again to the non-overlapping regions r1 and r2. The break line 25 includes a cutting portion 26 formed by inserting a blade from the back liner to the front liner, and a non-cutting portion 27 without a blade. The end portions 25a located on the front end sides of the upper outer flaps 19A and 19B are formed in a curved shape that curves toward the front end edges of the upper outer flaps 19A and 19B. An end portion 25b located on the base end side of the upper outer flaps 19A and 19B continuous with the side walls 12A and 12B is formed in a straight line extending toward the lateral center of the upper outer flaps 19A and 19B.

  The folding line 28 is a linear general ruled line extending from the outer side of the base end side of the upper outer flaps 19A, 19B toward the inner side of the distal end side in the non-overlapping regions r1, r2. The folding line 28 is provided so as to be located on the opposite side to the upper inner flaps 18A and 18B with respect to the breaking line 25 in a sealed state. Specifically, the folding line 28 is continuous with the end portion 25b of the breaking line 25 located on the base end side of the upper outer flaps 19A and 19B, and toward the center of the distal end edge of the upper outer flaps 19A and 19B. Extends at a tilt angle of degrees.

  The outer flap breaking portion 29 is located on the non-overlapping region r1, r2 side from the sticking portion (adhering portion) 32 to which the upper flaps 18A, 18B, 19A, 19B are stuck, from the distal end side of the upper outer flaps 19A, 19B to the proximal end. The upper outer flaps 19A and 19B are divided into the sticking part 32 side and the non-overlapping regions r1 and r2 side. In the present embodiment, it is formed so as to extend outward from the end portion 25b of the breaking line 25 toward the base end side so as to be positioned on a straight line with the folding line 28 of the opening operation portion 24. The outer flap breaking portion 29 includes a plurality of cutting lines 30 extending in a perforation along the extending direction of the folding line 28, and a guide cutting line 31 extending inward in the lateral direction from the tip edge side end of each cutting line 30. And a single zipper. The outer flap breaking portion 29 including the width of the guide cutting line 31 is positioned on a straight line with respect to the folding line 28. The opening operation part 24 side (front end side) end is located in the non-overlapping regions r1 and r2, and the proximal end side is located in the overlapping regions R1 and R3.

  In addition, the packaging box 10 is printed on a front liner on the front side (not shown) relating to a product to be accommodated. Similar to the cut tape 15, this printing is performed in the state of a cardboard sheet before punching out the blank. Therefore, in printing, a line formed by the cutting unit 26 and the cutting lines 30 and 31 constituting the opening operation unit 24 and the outer flap breaking unit 29 appears. However, in this embodiment, the opening operation part 24 and the outer flap fracture | rupture part 29 are provided only in the one end side of upper side outer flap 19A, 19B. Therefore, the cutting line formed on the top surface can be suppressed to a minimum, and the loss of printing visibility can be suppressed.

  The packaging box 10 bends the side wall 12A with respect to the end wall 11A, bends the end wall 11B with respect to the side wall 12B, and overlaps the glue margin wall 13 and the end wall 11B with, for example, a vinyl acetate emulsion adhesive. Adhere. In this folded state, the product is shipped to a manufacturer that manufactures a predetermined product.

  The manufacturer opens the folded end walls 11A and 11B and the side walls 12A and 12B in a rectangular shape in plan view. Then, after the lower inner flaps 21A and 21B are bent inward, the lower outer flaps 22A and 22B are bent inward, and these overlapping regions are adhered by a hot-melt resin. Next, the product is accommodated in the packaging box 10 from the upper opening end. Thereafter, the upper inner flaps 18A and 18B are bent inward, the upper outer flaps 19A and 19B are bent inward, and these overlapping regions R1 to R4 are adhered with a hot-melt resin. At this time, for the overlapping regions R1 and R3, a hot-melt resin is applied to the front end side from the outer flap breaking portion 29 of the upper outer flaps 19A and 19B, and the upper inner flaps 18A and 18B and the upper outer flaps 19A and 19B are connected. Adhere.

  As shown in FIGS. 1 and 2, the sealed packaging box 10 has a breaking line 25 of the opening operation portion 24 formed on the upper outer flaps 19A and 19B so that the overlapping regions R1 and R1 overlap with the upper inner flaps 18A and 18B. R3 and non-overlapping regions r1 and r2 are provided so as to extend. Therefore, since a part of the opening operation part 24 is located on the upper inner flaps 18A and 18B, when an external force is applied to press the opening operation part 24 inward, the upper inner flaps 18A and 18B are opened. Prevents inward deformation of. Therefore, even if the packaging boxes 10 are stacked and arranged at the time of distribution for transporting goods or storage at a store, the breaking line 25 is broken and the opening operation part 24 is prevented from opening (breaking). Or can be prevented. Further, since the outer flap fracture portion 29 is also substantially provided in the overlapping regions R1 and R3, the outer flap fracture portion 29 is not torn even if it is laminated. As a result, it is possible to prevent the visibility of printing performed on the upper outer flaps 19A and 19B from being impaired. And since the opening operation part 24 and the outer flap fracture | rupture part 29 are provided only in the one end side of upper side outer flap 19A, 19B, the fall of rigidity (pressure | voltage resistant strength) can be suppressed.

  When the packaging box 10 is opened and the product is taken out, as shown in FIG. 3, the opening operation portion 24 is pushed inward, and the upper outer flap 19 </ b> A is broken along the breaking line 25. Bend inward along. Accordingly, the opening 33 for opening operation is formed while deforming a part of the opening operation portion 24 superimposed on the upper inner flap 18B. Thereafter, as shown in FIG. 4, a finger is inserted through the opening 33 and hooked on the inner surface side of the upper outer flap 19A, and the upper outer flap 19A is operated outward.

  At this time, the operator places his / her hand on the folding edge along the folding line 28, not the leading edge of the upper outer flap 19 </ b> A or the breaking line 25, and sets the second folding line 20 at the boundary with the side wall 12 </ b> A. Open outward as a fulcrum. Thereby, the front end side end part of the outer flap fracture | rupture part 29 located in the non-overlapping area | region r1 side from the sticking part 32 becomes a fracture | rupture start point, and a fracture | rupture progresses sequentially toward a base end side. Further, in the upper outer flap 19A, the upper inner flap 18B side where the opening operation portion 24 and the outer flap breaking portion 29 are not provided is peeled off (peeled) by the sticking portion 32. As a result, the upper outer flap 19A is opened leaving a remaining portion 19a that remains adhered to the upper inner flap 18B.

  Next, as shown in FIG. 5, the upper inner flap 18B on the opposite side is similarly broken along the outer flap breaking portion 29, and the remaining half of the open end is opened. Finally, the upper inner flaps 18 </ b> A and 18 </ b> B are lifted outward, and the remaining portions 19 a and the side walls 12 </ b> A and 12 </ b> B continuous with each other are opened along the second folding line 20. The order of opening the upper outer flaps 19A and 19B may be reversed. Moreover, after opening each opening operation part 24 and 24, you may fracture | rupture along the outer flap fracture | rupture part 29, and may open | release each upper outer flap 19A, 19B.

  As described above, the packaging box 10 of the present invention does not cause the operator to feel pain because the hand hits the bent edge along the folding line 28 of the opening operation unit 24 during the opening operation. Further, since the outer flap breaking portion 29 is continuous with the opening operation portion 24, the force of the opening operation can be immediately transmitted to the outer flap breaking portion 29 to be broken. Moreover, the upper outer flaps 19 </ b> A and 19 </ b> B are broken at one end side by the outer flap breaking portion 29 and peeled at the other end side. Therefore, the opening workability can be improved as much as possible while suppressing the deterioration of the pressure strength in the sealed state.

(Second Embodiment)
FIG. 7 shows a packaging box 10 of the second embodiment. This packaging box 10 is different from the first embodiment in that the base end side end portion of the outer flap fracture portion 29 extends toward the side edges of the upper outer flaps 19A and 19B. Specifically, the outer flap breaking portion 29 of the second embodiment is a first breaking portion 29a extending toward the proximal end side of the upper outer flaps 19A and 19B along the extending direction of the folding line 28 of the opening operation portion 24. And a second breakage portion 29b extending in the lateral direction from the base end side end portion of the first breakage portion 29a toward the side edges of the upper outer flaps 19A and 19B.

  In the second embodiment, it is possible to obtain the same operation and effect as the first embodiment. In addition, in the second embodiment, since the outer flap breaking portion 29 extends toward the side edges of the upper outer flaps 19A and 19B, when the upper outer flaps 19A and 19B are opened, the remaining portion 19a remaining on the upper inner flaps 18A and 18B The space between the side walls 12A and 12B is reliably broken. Therefore, the opening workability of the upper inner flaps 18A and 18B can be improved.

(Third embodiment)
FIG. 8 shows a packaging box 10 of the third embodiment. The packaging box 10 has an upper outer flap 19A, on the side of the overlapping regions R1, R3 (between the opening operation portion 24 and the sticking portion 32) without causing the outer flap breaking portion 29 to be continuous with the opening operation portion 24. It differs from 1st Embodiment by the point provided so that it might extend from the front end edge of 19B to a base end edge. In the third embodiment configured as described above, the same operations and effects as those of the first embodiment can be obtained. Moreover, in the third embodiment, since the entire outer flap fracture portion 29 can be provided in the overlapping regions R1 and R3, it is possible to more reliably prevent tearing when the layers are arranged in layers.

(Fourth embodiment)
FIG. 9 shows a packaging box 10 of the fourth embodiment. This packaging box 10 is orthogonal to the front end edges of the upper outer flaps 19A and 19B (parallel to the front end edges of the upper inner flaps 18A and 18B) without inclining the folding line 28 of the opening operation portion 24. It differs from the first embodiment in that it is provided to extend. In the fourth embodiment configured as described above, the same operations and effects as those of the first embodiment can be obtained.

(Fifth embodiment)
FIG. 10 shows a packaging box 10 of the fifth embodiment. This packaging box 10 is different from the fourth embodiment in that not only the folding line 28 but also the outer flap breaking portion 29 is provided so as to extend in a direction orthogonal to the leading edges of the upper outer flaps 19A and 19B. In the fifth embodiment thus configured, the outer flap fracture portion 29 is positioned in the non-overlapping regions r1 and r2 in the sealed state, and therefore there is a possibility of tearing at the outer flap fracture portion 29 when arranged in layers. Then, the same operation and effect as the first embodiment can be obtained.

  In addition, the packaging box 10 of this invention is not limited to the structure of the said embodiment, A various change is possible.

  For example, the breaking line 25 of the opening operation unit 24 is constituted by a perforated cutting line 30, but it may be constituted by a single zipper, and the back liner of the corrugated cardboard sheet is cut and the opposite front liner is cut. A half-cut line may be used, and can be changed as desired. Similarly, the outer flap breaking portion 29 is configured by a single zipper, but may be configured by a perforated cutting line or a half-cut line, and can be changed as desired. .

  Moreover, although the folding line 28 of the opening operation part 24 is provided so as to be continuous with the one end part 25b of the breaking line 25, it may be provided so as to be continuous with the both end parts 25a, 25b. In this case, the opening operation part 24 may be provided not in the tip of the upper outer flaps 19A and 19B but in the intermediate part.

  Moreover, although the opening operation part 24 and the outer flap fracture | rupture part 29 were each provided in both upper upper flaps 19A and 19B, you may provide only in one upper outer flap 19A and 19B. Moreover, although it provided only in the one end side of upper outer flap 19A, 19B, you may provide in both ends. Moreover, it may also be provided on the lower outer flaps 22A and 22B to eliminate the direction of the top and bottom.

  Further, in each embodiment, the upper flaps 18A, 18B, 19A, 19B and the lower flaps 21A, 21B, 22A, 22B are attached by an adhesive, but may be fixed by a known method that can be fixed. In the above embodiment, the lower flaps 21A, 21B, 22A, and 22B are integrally provided, but may be closed by a separate tray.

  In each embodiment, the packaging box 10 is formed so as to have a square shape in plan view. However, the packaging box 10 may have an octagonal shape in plan view in which a chamfer wall is provided between the end walls 11A and 11B and the side walls 12A and 12B. The shape of the packaging box 10 such as a plan view shape or a side view shape can be changed as desired. That is, in the packaging box in which the inner flap and the outer flap are connected to the opening end of the outer peripheral wall, and the opening end is sealed by fixing these flaps, the opening operation portion 24 and the outer flap breaking portion 29 are respectively attached to the outer flap. What is necessary is just to provide like embodiment.

  In the above-described embodiment, the packaging box 10 is formed by punching a paper cardboard sheet, but may be formed by punching a resin cardboard sheet. Moreover, it is not restricted to a corrugated board sheet, You may form with a single cardboard or a resin sheet.

10 ... Packing box 11A, 11B ... End wall (outer wall)
12A, 12B ... side wall (outer peripheral wall)
13 ... Paste wall 18A, 18B ... Upper inner flap 19A, 19B ... Upper outer flap 20 ... Second folding line (open end)
24 ... Opening operation part 25 ... Breaking line 25b ... End part (one end)
28 ... Bending curve 29 ... Outside flap fracture part 32 ... Attaching part R1-R4 ... Overlapping area r1, r2 ... Non-overlapping area

Claims (4)

In the packaging box in which the inner flap and the outer flap are connected to the open end of the outer peripheral wall, and the open end is sealed by fixing these flaps.
To the outer flap,
An opening operation portion having a rupture line extending to a superimposing region overlapping with the inner flap and a non-superimposing region separated from the inner flap, and a folding line provided in the non-superimposing region to be continuous with one end of the rupture line When,
Extending from the distal end side toward the proximal end side continuous with the outer peripheral wall, and provided with an outer flap breaking portion for breaking the inner flap and the outer flap and the opening operation portion side. Characteristic packaging box.   The packaging box according to claim 1, wherein the opening operation portion is provided on a distal end side of the outer flap, and the outer flap breaking portion is provided so as to extend from the opening operation portion toward a proximal end side.   The packaging box according to claim 2, wherein the folding line of the opening operation part and at least the tip side of the outer flap breaking part are provided so as to be positioned on a straight line.   The outer flap rupture portion is formed at least on the base end side in the overlapping region, and the inner flap and the outer flap are fixed to the distal end side of the outer flap from the outer flap rupture portion. The packaging box of any one of Claim 1 thru | or 3.

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