JP2020011758A - Packaging box - Google Patents

Abstract

To provide a packaging box which can be opened easily and quickly, and which can hold a plurality of folded packaging boxes after opening.SOLUTION: A packaging box 1 includes a pair of end faces composed of an inner flap 14 and an outer flap 15, a pair of side walls 12, a top wall 10, and a bottom wall 11. Also, the packaging box 1 includes a first cutting line 20 formed on each outer flap 15, a second cutting line 21 provided at a boundary between each outer flap 15 and each of the walls 10 and 11, and a handgrip part 22 formed on the inner flap 14, each handgrip part 22 being cut to form a handgrip hole. The packaging box 1 is opened by dividing the outer flap 15 into two along the first cutting line 20 and separating from the walls 10 and 11 along the second cutting line 21, in the state where the packaging box 1 is folded, the handgrip part 22 of one packaging box 1 is inserted into the handgrip hole of the other packaging box 1 so that the one packaging box 1 is connected to the other packaging box 1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging box.

  2. Description of the Related Art Packaging boxes for packaging articles are known.

  The packaging box described in Patent Literature 1 includes a pair of side panels, a bottom panel, and an upper panel, and folds a pair of end inner flaps extended from the pair of side panels to form a bottom panel and an upper panel. The end face is closed by bending the outer end flap extended from the above and overlapping and adhering to the inner flap. A cutting auxiliary line is provided between both sides and the center of each outer flap. Only the two sides of the outer flap are bonded to the inner flap, and the central portion of the outer flap is not bonded to the inner flap. Further, a cutting auxiliary line is provided between both sides of each outer flap and upper and lower panels. When opening this packaging box, after cutting the center part of the upper and lower outer flaps along the cutting auxiliary line, open a pair of inner flaps, and use both sides of the upper and lower outer flaps as cutting auxiliary lines. Along the upper and lower panels. Further, the packaging box from which the product has been taken out is folded, and the tab-shaped cutout portion of one inner flap is inserted into the cutout of the other inner flap. Thereby, the packaging box is temporarily fixed in a folded state.

JP-A-2011-16571

  However, in the above-mentioned packaging box, the end face must be opened unless a total of six places (the central part (two places) of the upper and lower outer flaps and two sides (four places) thereof) are cut along the cutting auxiliary line. And the packaging box could not be easily and quickly opened.

  Further, the opened packaging box is folded, a plurality of the packaging boxes are stacked and stored, and when a certain amount is accumulated or collected periodically. Although the above packaging box can be kept alone in a folded state, no consideration has been given to stacking a plurality of folded packaging boxes.

  The present invention, in order to solve the above-mentioned problems, provides a packaging box that can be opened easily and quickly, and that can hold a plurality of folded (expanded) packaging boxes in an overlapped state after opening.

  In order to achieve the above-mentioned object, the present invention relates to a packaging box for packaging an article, wherein a pair of first walls arranged opposite to each other in a first direction and a second direction intersecting the first direction are provided. A pair of second wall portions disposed to face each other, a pair of third wall portions disposed to face each other in a third direction intersecting the first direction and the second direction, and each of the first wall portions; A first cutting line extending in a third direction, a second cutting line provided at a boundary between each of the first wall portions and each of the third wall portions, and each of the first wall portions. And each of the cuffs is defined by a crease folding curve and a cuff cutting line formed on the first wall portion, and along the cuff cutting line. The packaging box is cut and bent by the cuff folding curve to form a cuff hole for a user to handle, and the packaging box uses the cuff hole to form the first wall portion. The package box is opened by being divided into two along the first cutting line and separated from the pair of third walls along the second cutting line, and the package box after being opened is folded or unfolded. When a plurality of packaging boxes are overlapped, the cuffs formed in one packaging box are bent along the cuff folding curve and inserted into the cuff holes formed in the other packaging boxes, One of the packaging boxes is connected to another of the packaging boxes.

  In this case, it is preferable that the hook portion is formed wider on the distal end side than on the hook folding curve side.

  In this case, it is preferable that a plurality of the crease folding curves are formed in the cuff portion in parallel with each other.

  In this case, in the vicinity of both ends of the cuff folding curve of the cuff, the cuff of one packaging box passes through the cuff hole of another packaging box, and the other packaging It is preferable that a pair of pressing protrusions to be pressed against the edge of the hook hole of the box is formed.

  In this case, the pair of second wall portions and the pair of third wall portions are alternately connected to form a cylindrical peripheral wall, and each of the first wall portions is formed of the pair of second wall portions. A pair of inner flaps connected to the first direction ends of the first and second portions, and a pair of inner flaps connected to the first direction ends of the pair of third wall portions and fixed to the pair of inner flaps with their distal ends separated from each other A pair of outer flaps, wherein the first cutting line is formed on the outer flap, the second cutting line is formed on a boundary between the outer flap and the third wall, It is preferable that a hook portion is formed on the inner flap and is exposed between the pair of outer flaps.

  In other cases, the pair of first wall portions and the pair of second wall portions are alternately connected to form a cylindrical peripheral wall, and each of the third wall portions is formed of the pair of first and second wall portions. A pair of inner flaps connected to the third direction end of the wall, and a pair of outer flaps connected to the third direction end of the pair of second walls and fixed to the pair of inner flaps; (34, 36), wherein the first cutting line and the handle portion are formed on the first wall portion, and the second cutting line is formed on the first wall portion and the pair of inner flaps. Is preferably formed at the boundary.

  According to the present invention, the packaging box can be easily and quickly opened. Furthermore, it is possible to hold a plurality of folded (unfolded) packaging boxes after opening.

It is a perspective view showing the packaging box concerning a 1st embodiment of the present invention. It is a top view showing the blank of the packaging box concerning a 1st embodiment of the present invention. It is a top view which expands and shows a part of blank of the packaging box which concerns on 1st Embodiment of this invention. It is a perspective view showing the state where the packaging box concerning a 1st embodiment of the present invention was opened. It is a perspective view showing the state where both ends of a packaging box concerning a 1st embodiment of the present invention were opened. It is a perspective view showing the state where the packaging box concerning a 1st embodiment of the present invention was folded. It is sectional drawing explaining the connection effect | action of the packaging box which concerns on 1st Embodiment of this invention. It is a perspective view showing one of the cuffs etc. of the packaging box concerning a 1st embodiment of the present invention. It is a perspective view showing the other of the cuff part etc. of the packaging box concerning a 1st embodiment of the present invention. It is a perspective view showing the packaging box concerning a 2nd embodiment of the present invention. It is a top view showing the blank of the packaging box concerning a 2nd embodiment of the present invention. It is a perspective view showing a packaging box concerning a modification of a 1st embodiment of the present invention. It is a top view showing the blank of the packaging box concerning the modification of a 1st embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Note that “Fr” shown in each figure indicates “before”, “Rr” indicates “after”, “L” indicates “left”, “R” indicates “right”, and “U” indicates "D" indicates "down" and "D" indicates "down". The left-right direction (first direction) is orthogonal to the front-rear direction (second direction), and the up-down direction (third direction) is orthogonal to the left-right direction and the front-rear direction. Further, in the present specification, terms indicating directions and positions are used, but these terms are used for convenience of description and do not limit the technical scope of the present invention.

[First Embodiment]
The packaging box 1 according to the first embodiment will be described with reference to FIGS. FIG. 1 is a perspective view showing the packaging box 1. FIG. 2 is a plan view showing the blank 5 of the packaging box 1. FIG. 3 is a plan view showing a part of the blank 5 in an enlarged manner.

[Overview of packaging box]
As shown in FIG. 1, the packaging box 1 is formed in a substantially rectangular parallelepiped shape. The packaging box 1 is a wrap-around case that wraps and wraps an article (not shown) such as a container containing a beverage. The packaging box 1 is formed by assembling a blank 5 shown in FIG. The blank 5 is formed, for example, by punching a single sheet of corrugated cardboard paper with a die or the like. The corrugated cardboard sheet is, for example, a double-sided corrugated cardboard sheet in which a front liner 9B and a back liner 9C (see FIG. 4) are bonded to the front and back of a corrugated middle 9A. FIG. 2 shows the front liner 9B side (outside the packaging box 1). In the present specification, a direction parallel to the middle 9A of the corrugated cardboard sheet is referred to as a “step direction”, and a direction orthogonal to the step direction is referred to as a “flow direction”. “X” shown in the drawing indicates “stage direction”, and “Y” indicates “flow direction”.

[blank]
As shown in FIG. 2, the blank 5 includes a top wall 10 (third wall portion), a bottom wall 11 (third wall portion), a pair of side walls 12 (second wall portion), and a passage piece 13. , Four inner flaps 14 and four outer flaps 15.

<Top wall, bottom wall, side wall, passage piece>
The top wall 10, the one side wall 12, the bottom wall 11, the other side wall 12, and the passage piece 13 are arranged in a row in this order in the step direction, and are continuously provided via the first folding line L1. The top wall 10, the bottom wall 11, the side wall 12, and the passage piece 13 are formed in a substantially rectangular shape having substantially the same dimensions in the flow direction. The top wall 10 and the bottom wall 11 are formed in a substantially rectangular shape shorter than the side walls 12 in the stepwise direction. The passage piece 13 is formed in a substantially rectangular shape that is shorter in the step direction than the top wall 10.

<Inner flap>
The four inner flaps 14 are connected to both ends of the pair of side walls 12 in the flow direction via a second fold curve L2. The inner flap 14 is formed in a substantially rectangular shape having substantially the same size in the step direction of the side wall 12. The dimension (extension dimension) of the inner flap 14 in the flow direction is set to about half of the dimension of the top wall 10 (bottom wall 11) in the step direction.

<Outer flap>
The four outer flaps 15 are continuously provided at both ends in the flow direction of the top wall 10 and the bottom wall 11 via the second fold curve L2. The outer flap 15 is formed in a substantially rectangular shape having substantially the same size in the step direction of the top wall 10 or the like. The dimension (extended dimension) of the outer flap 15 in the flow direction is set to be the same as the extended dimension of the inner flap 14.

  The first fold curve L1 and the second fold curve L2 are general-purpose ruled lines obtained by linearly crushing the corrugated cardboard sheet in the thickness direction from the back liner 9C side. The first and second fold curves L1 and L2 have a function of bending the cardboard sheet so that the back liner 9C faces inward. The first and second fold curves L1 and L2 are not limited to general ruled lines, but may be any line for bending a corrugated cardboard sheet, such as a lead ruled line in which a plurality of cuts are arranged at predetermined intervals on the general ruled line. Good.

<Opening structure>
As shown in FIG. 2, an opening structure 16 for easily opening the sealed packaging box 1 is formed on each inner flap 14 and each outer flap 15. The opening structure 16 includes four first cutting lines 20, four second cutting lines 21, and four handholds 22. Four first cutting lines 20 are formed on the four outer flaps 15. The four second cutting lines 21 are formed at the boundary between the top wall 10 and the two outer flaps 15 connected thereto, and at the boundary between the bottom wall 11 and the two outer flaps 15 connected thereto. . The four handle portions 22 are formed on the four inner flaps 14. Since the four first cutting lines 20 have substantially the same (symmetric) shape, only one first cutting line 20 will be described below. In addition, for the same reason, one second cutting line 21 and one handhold 22 will be described below.

(1st cutting line)
The first cutting line 20 extends along the flow direction substantially at the center of the outer flap 15 in the step direction. The first cutting line 20 is a zipper in which a plurality of substantially Y-shaped cuts are arranged at predetermined intervals. The first cutting line 20 has a function of cutting the outer flap 15 from the front end toward the base end (second cutting line 21). In addition. At the tip of the outer flap 15, a triangular cutting start part 15A is cut out toward the end of the first cutting line 20.

(Second cutting line)
The second cutting line 21 is formed on the second fold curve L2 between the top wall 10 (bottom wall 11) and the outer flap 15. The second cutting line 21 is a sewing machine blade line in which a plurality of linear cuts are arranged at predetermined intervals. The interval between the cuts of the second cutting line 21 is set so as to gradually increase from the side of the first cutting line 20 toward both sides in the stepwise direction. The second cutting line 21 has a function of separating the outer flap 15 divided by the first cutting line 20 from the top wall 10 (bottom wall 11) from the center in the step direction toward both sides.

(Handle)
As shown in FIG. 3, the handle 22 is formed near the center of the inner flap 14 in the step direction. The hook portion 22 is defined by a hook folding curve 23 formed on the inner flap 14 and a hook cutting line 24. In the hook portion 22, three hook folding curves 23 are formed parallel to each other and at substantially equal intervals in the flow direction. The crease folding curve 23 on the most proximal side (the second cutting line 21) is formed substantially at the center of the inner flap 14 in the flow direction. Each of the hand-folded curves 23 is a lead ruled line in which a plurality of cuts are arranged at predetermined intervals on a general-purpose ruled line extending in parallel with the second folding curve L2. Note that the crease folding curve 23 is not limited to the lead ruled line, but may be any line for bending a corrugated cardboard sheet, such as a general ruled line.

  The cuff cutting line 24 is formed so as to surround the distal end side of the inner flap 14 from both ends of the cuff folding curve 23 on the most proximal side. The hook cutting line 24 is formed by a plurality of cuts arranged along the contour of the hook portion 22. The cuff portion 22 is cut along a cuff cutting line 24 and bent along (any) crease folding curve 23 to form a cuff hole 22H for a user to take a hand (see FIG. 4). ).

  More specifically, the hook portion 22 includes two wall thickness adjusting portions 25 formed between the hook folding curves 23 and a wall thickness adjusting portion via the hook folding curve 23 located at the most distal end side. 25, and a hand-held main body 26 connected to the main body 25. The two wall thickness adjusting portions 25 are formed in a substantially trapezoidal shape that spreads in a stepwise direction from the base end side (second cutting line 21) toward the tip end. In other words, the handle portion 22 is generally wider on the tip side than on the side of the handle folding curve 23. The width of the wall thickness adjusting section 25 in the flow direction (the interval between the hand-folded curves 23) is set slightly larger than the thickness of the corrugated cardboard sheet. The handle main body 26 is formed in a substantially rectangular shape that is wider in the flow direction than the wall thickness adjuster 25. One side of the distal end side of the handle main body 26 has an arc shape that is concave toward the proximal end side.

  Further, a pair of pressing protrusions 27 are formed near both ends of each hook folding curve 23 of the hook portion 22 so as to protrude toward the base end side. In this hook portion 22, since three hook folding curves 23 are formed, three sets of a pair of pressing protrusions 27 are formed. Each of the pair of pressing projections 27 is formed in a substantially semicircular shape by bending a hook cutting line 24 in the vicinity of both ends of the hook folding curve 23 like a fishhook.

[Packaging box making]
Next, the box making process (sealing process) of the packaging box 1 will be described with reference to FIG.

  The packaging box 1 is assembled by appropriately bending a blank 5 (see FIG. 2) with the back liner 9C facing upward. The packaging box 1 may be manually prepared by a user, or may be fully or semi-automatically prepared by a packaging device (wraparound caser). Here, as an example, a case in which a packaging device (not shown) produces the packaging box 1 in a fully automatic manner will be described.

  The packaging device folds the side wall 12 between the bottom wall 11 and the passage piece 13 at a substantially right angle along the first fold curve L1, and places the plurality of accumulated articles (not shown) on the bottom wall 11. I do. Subsequently, the packaging device folds the passage piece 13 at a substantially right angle along the first fold curve L1, and attaches an adhesive to the surface of the passage piece 13. Next, the packaging device folds the other side wall 12 and the top wall 10 at a substantially right angle along the first fold curve L1, and adheres the top wall 10 to the passage piece 13.

  As described above, the pair of side walls 12 are arranged facing each other in the front-rear direction (second direction), and the top wall 10 and the bottom wall 11 are arranged facing each other in the up-down direction (third direction). The pair of side walls 12, the top wall 10, and the bottom wall 11 are alternately connected to form a cylindrical peripheral wall 1W, and a plurality of articles are tightly wrapped in the peripheral wall 1W.

  Next, the packaging device folds the four inner flaps 14 inward along the second fold curve L2, and attaches an adhesive to the surface of each inner flap 14. Thereafter, the packaging device folds the four outer flaps 15 inward along the second fold curve L2, and overlaps and bonds each outer flap 15 to the inner flap 14. Then, the pair of inner flaps 14 and the pair of outer flaps 15 form an end surface (first wall portion) of the packaging box 1, and the pair of end surfaces are arranged to face each other in the left-right direction (first direction).

  As described above, the packaging box 1 is in a state where the packaging box 1 is sealed (sealed) (see FIG. 1). In this state, the front flaps of the pair of front and rear inner flaps abut each other. The pair of upper and lower outer flaps 15 is fixed to the pair of front and rear inner flaps 14 with their tips separated. In this state, the first cutting line 20 extends in the up-down direction (third direction) at each outer flap 15. The first cutting line 20 is disposed substantially in the same straight line as the butted portion of the pair of inner flaps 14. The second cutting line 21 is provided at the boundary between the outer flap 15 and the top wall 10 and at the boundary between the outer flap 15 and the bottom wall 11. The pair of front and rear handle portions 22 are formed with the first cutting line 20 (extension line) interposed between the inner flaps 14 and are exposed between the pair of upper and lower outer flaps 15. The pair of front and rear clasps 22 are formed so that the clasp main body 26 faces the first cutting line 20 and one curved side faces each other.

[Opening the packaging box]
Next, an opening process of the packaging box 1 will be described with reference to FIG. FIG. 4 is a perspective view showing a state where the packaging box 1 is opened.

  The packaging box 1 is opened by opening at least one of a pair of left and right end surfaces. Here, a case where the left end face of the packaging box 1 is opened will be described as an example.

  First, the user pushes the pair of cuffs 22 with both hands, and cuts each cuff 22 along the cuff cutting line 24 and bends the inside with a cuff folding curve 23 to form a cuff hole 22H. The user hangs the fingers of both hands put in the pair of hook holes 22H on the back surfaces of the distal ends of the pair of inner flaps 14, and pulls the pair of inner flaps 14 toward the user. Then, the pair of upper and lower outer flaps 15 adhered to the pair of inner flaps 14 are cut along the first cutting line 20 from the center in the vertical direction toward both the upper and lower sides, and are formed into the pair of upper and lower second cutting lines 21. Along the front and rear sides, it is cut toward the front and rear sides. That is, the pair of outer flaps 15 are divided into two by the first cutting line 20 and are separated from the top wall 10 and the bottom wall 11, and are integrated with the pair of inner flaps 14, with the second folding curve L 2 as a fulcrum It is a double door.

  Thus, the packaging box 1 is in an opened state. Thereby, the user can take out the article from the end face opening of the packaging box 1. In the above-described opening step of the packaging box 1, the case where the user pulls the pair of inner flaps 14 with both hands substantially simultaneously is described, but the present invention is not limited to this. For example, the user cuts one pair of upper and lower outer flaps 15 along the first and second cutting lines 20 and 21 by opening one cuff hole 22H with one hand, pulling one inner flap 14 and then the other cuff. A pair of upper and lower outer flaps 15 may be cut along the second cutting line 21 by opening the hole 22H and pulling the other inner flap 14.

[Disposal of packaging box]
Next, a disposal process of the packaging box 1 will be described with reference to FIGS. FIG. 5 is a perspective view showing a state where both end surfaces of the packaging box 1 are opened. FIG. 6 is a perspective view showing a state where the packaging box 1 is folded.

  The empty packaging box 1 from which the articles are taken out is folded so as not to be bulky. Specifically, as shown in FIG. 5, the user opens the right end face of the packaging box 1 in the same procedure as the above-described opening step. Thereafter, as shown in FIG. 6, the user folds the pair of side walls 12 in the same direction so as to be parallel to the bottom wall 11 to fold the packaging box 1 flat.

  A plurality of folded packaging boxes 1 are stacked and temporarily stored, and are collected (discarded) when a certain amount is accumulated or periodically. By the way, when the folded packaging boxes 1 are stacked one by one, there is a possibility that the stacked state is not stabilized and collapses. In addition, when a plurality of folded packaging boxes 1 are transported (collected) in a stacked state, another packaging box 1 placed on one packaging box 1 may slide down, and workability at the time of collection may be reduced. Sometimes it got worse. Therefore, the packaging box 1 according to the first embodiment is provided with a configuration in which a plurality of packaging boxes 1 folded after use are connected.

<Connecting process of packaging box>
With reference to FIG. 7 to FIG. 9, a connecting process of the plurality of packaging boxes 1 will be described. FIG. 7 is a cross-sectional view for explaining the connection operation of the packaging box 1. FIG. 8 is a perspective view showing one of the handle portions 22 and the like. FIG. 9 is a perspective view showing the other of the handle 22 and the like. Here, as an example, a step of connecting the two folded packaging boxes 1 will be described. In addition, hereinafter, for convenience of description, a code “(A)” is added to one packaging box 1 and this configuration, and a code “(B)” is added to the other packaging box 1 and this configuration. In the description common to both packaging boxes 1, the above (A) and (B) are not added.

  First, as shown in FIG. 7, the user overlaps the two folded packaging boxes 1 while adjusting the position of each inner flap 14. 7 to 9, the folded two packaging boxes 1 are stacked in the same direction on the front and back, but the present invention is not limited to this, and the two packaging boxes 1 may be stacked on different sides. Zu).

  Next, as shown in FIGS. 8 and 9, the user bends the clasp 22 (A) of one of the packaging boxes 1 (A) along the crooked curve 23 (A) on the most proximal side while the other is folded. Into the hook hole 22H (B) of the packaging box 1 (B). Then, the hook portion 22 (A) penetrates the hook hole 22H (B) while pushing out the hook portion 22 (B).

  As shown in FIG. 9, in a state where the hook portion 22 (A) penetrates the hook hole 22H (B), the hook portion 22 (B) is the most proximal side hook folding curve 23 (B). , And the handle portion 22 (A) is bent at the most proximal hand-side bent curve 23 (A) and overlaps the handle portion 22 (B). In this state, the pair of pressing protrusions 27 (A) is pressed against the edge of the handle hole 22H (B). More specifically, the proximal end wall thickness adjusting portion 25 (A) is disposed inside the handle hole 22H (B), and the distal end side wall thickness adjusting portion 25 (A) and the handle main body portion 26 (A). Protrudes from the hook hole 22H (B). Further, a pair of pressing protrusions 27 formed at both left and right end portions of the wall thickness adjusting portion 25 (A) on the distal end side come into contact with the edge (the inner flap 14) of the handle hole 22H (B) so as to bite. I have.

  As described above, by hooking the handle portion 22 (A) with the handle hole 22H (B), the two folded packaging boxes 1 are connected. Note that the user may hook another hook portion 22 (A) into the other hook hole 22H (B) in the same procedure as described above, but connect the two (plural) packaging boxes 1 together. To do so, at least one of the four hooks 22 (A) may be engaged with one hook hole 22H (B). Further, the wall thickness adjusting portion 25 (A) and the main body portion 26 (A) protruding from the cuff hole 22H (B) may be bent along the cuff folding curve 23 (A) (not shown).

  In the packaging box 1 according to the first embodiment described above, the outer flap 15 is divided into two along the first cutting line 20 using the handle holes 22H, and the top wall 10 is divided along the second cutting line 21. And it is configured to be opened by separating from the bottom wall 11. According to this configuration, the packaging box 1 can be easily and quickly opened by the user holding the pair of handle holes 22H and pulling the pair of inner flaps 14 toward the user. Further, when a plurality of the opened packaging boxes 1 are folded and folded, a cuff 22 (A) formed on one packaging box 1 (A) is bent along a cuff folding curve 23 (A). And one of the packaging boxes 1 (A) is connected to the other packaging box 1 (B) by being inserted into the handle hole 22H (B) formed in the other packaging box 1 (B). did. According to this configuration, a plurality of folded packaging boxes 1 can be held in a stacked state. Further, the user (operator) can carry the plurality of stacked packaging boxes 1 by putting a hand in the handle hole 22H. Thereby, a plurality of used packaging boxes 1 can be collectively and efficiently collected.

  In addition, according to the packaging box 1 according to the first embodiment, the distal end side of the handle portion 22 is formed wider (longer) than the base end side, so that the handle hole 22H (B) of the packaging box 1 (B) is formed. ) Can be made hard to come out of the handle 22 (A) of the packaging box 1 (A) inserted into the package box 1). Thereby, the connected state of the folded packaging boxes 1 can be maintained.

  Further, in the connecting step of the packaging boxes 1, the case where the two folded packaging boxes 1 are connected has been described, but three or more folded packaging boxes 1 are connected in the same step (procedure) as described above. You may. In the packaging box 1 according to the first embodiment, three cuff folding curves 23 (two wall thickness adjusting portions 25) are formed, and therefore, the cuff portions 22 according to the number of the folded packaging boxes 1 to be stacked. Can be adjusted at the bending position. Thus, the hook portion 22 (A) can be bent at a position penetrating the hook hole 22H (B), and the substantially trapezoidal hook portion 22 (A) is formed at the edge of the hook hole 22H (B). It can be hooked securely. As a result, the packaging boxes 1 can be stacked in close contact with each other, and the plurality of packaging boxes 1 can be securely grouped.

  According to the packaging box 1 of the first embodiment, the pair of pressing projections 27 (A) of the handle 22 (A) are pressed against the edge of the handle hole 22H (B). The hook 22 (A) can be securely hooked on the edge of the hook hole 22H (B). This makes it difficult for the hook portion 22 (A) to come out of the hook hole 22H (B), and the connected state of the folded packaging boxes 1 can be appropriately maintained.

  In the packaging box 1 according to the first embodiment described above, the opening structure 16 is formed on the end surface (the inner flap 14 and the outer flap 15) of the packaging box 1, but the present invention is not limited to this. For example, the opening structure 16 may be formed on the pair of side walls 12 (not shown).

  Further, in the above description of the connecting step of the packaging box 1, the handle 22 (A) of one packaging box 1 (A) is pushed into the handling hole 22H (B) of the other packaging box 1 (B). However, the present invention is not limited to this. For example, the hook 22 (B) of the other packaging box 1 (B) may be pushed into the hook hole 22H (A) of the one packaging box 1 (A). Further, the four hook portions 22 may be bent in the same direction, or may be bent in different directions.

[Second embodiment]
Next, a packaging box 2 according to a second embodiment will be described with reference to FIGS. FIG. 10 is a perspective view showing the packaging box 2. FIG. 11 is a plan view showing the blank 6 of the packaging box 2. In the following description, the same or corresponding components as those of the packaging box 1 according to the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

  As shown in FIG. 10, the packaging box 2 is an A-type box that is sealed by closing an upper end surface and a lower end surface of a substantially rectangular cylindrical peripheral wall 2W. The packaging box 2 is formed by assembling a blank 6 (a cardboard sheet made of paper) shown in FIG.

[blank]
As shown in FIG. 11, the blank 6 includes a pair of end walls 30 (first wall), a pair of side walls 31 (second wall), a passage piece 32, a pair of upper inner flaps 33, It includes a pair of upper and outer flaps 34, a pair of lower inner flaps 35, and a pair of lower and outer flaps 36.

<End wall, side wall>
The pair of end walls 30 and the pair of side walls 31 are alternately connected via a first fold curve L11. The side wall 31 is formed in a substantially rectangular shape wider in the flow direction than the end wall 30. The passage piece 32 is connected to the end in the flow direction of the side wall 31 located on one side in the flow direction via a first fold curve L11.

<Upper inner flap, upper outer flap>
The pair of upper inner flaps 33 are connected to one end of the pair of end walls 30 in the step direction (upper end of the peripheral wall 2W) via a second fold curve L12. The upper inner flap 33 is formed in a substantially rectangular shape having substantially the same width as the dimension of the end wall 30 in the flow direction. The dimension (extended dimension) of the upper inner flap 33 in the step direction is set to approximately half the dimension of the end wall 30 in the flow direction. The pair of upper and outer flaps 34 are connected to one end of the pair of side walls 31 in the stepwise direction via a second fold curve L12. The upper outer flap 34 is formed in a substantially rectangular shape having substantially the same width as the dimension of the side wall 31 in the flow direction. The step size (extended dimension) of the upper and outer flaps 34 is substantially the same as the extended dimension of the upper inner flap 33.

<Lower inner flap, lower outer flap>
The pair of lower inner flaps 35 are connected to the other end of the pair of end walls 30 in the stepwise direction (the lower end of the peripheral wall 2W) via a third fold curve L13. The pair of lower outer flaps 36 are connected to the other end of the pair of side walls 31 in the stepwise direction via a third fold curve L13. The lower inner flap 35 is formed in substantially the same shape as the upper inner flap 33, and the lower outer flap 36 is formed in substantially the same shape as the upper outer flap 34.

  The first to third fold curves L11 to L13 are general ruled lines, but are not limited thereto, and may be any line for bending a cardboard sheet such as a lead rule.

<Opening structure>
The opening structure 37 includes two first cutting lines 20, four second cutting lines 21, and four handholds 22. The two first cutting lines 20 are formed on the pair of end walls 30. The four second cutting lines 21 are formed at the boundary between the pair of end walls 30 and the pair of upper inner flaps 33 and at the boundary between the pair of end walls 30 and the pair of lower inner flaps 35. The four handle portions 22 are formed on a pair of end walls 30. Since the two first cutting lines 20 have substantially the same (symmetric) shape, only one first cutting line 20 formed on one end wall 30 will be described below. In addition, for the same reason, a pair of second cutting lines 21 and a pair of handle portions 22 formed on one end wall 30 will be described below.

(1st cutting line)
The first cutting line 20 extends along the step direction substantially at the center of the end wall 30 in the flow direction. The center of the first cutting line 20 in the step direction is formed by three linear cuts, and both sides (upper and lower sides) of the first cutting line 20 in the step direction are formed by a plurality of substantially Y-shaped cuts. The substantially Y-shaped notch of the first cutting line 20 is formed vertically symmetrically. The first cutting line 20 has a function of cutting the end wall 30 from the center in the step direction toward both sides.

(Second cutting line)
The pair of second cutting lines 21 are formed on the second and third fold curves L12 and L13 between the end wall 30 and the upper and lower inner flaps 33 and 35. The second cutting line 21 is a zipper in which a plurality of substantially L-shaped cuts are arranged at predetermined intervals. The substantially L-shaped cut of the second cutting line 21 is formed symmetrically about the first cutting line 20. The pair of second cutting lines 21 have a function of separating the end walls 30 divided by the first cutting lines 20 from the inner flaps 33 and 35 from the center in the flow direction toward both sides.

(Handle)
The pair of handle portions 22 are formed symmetrically about the first cutting line 20 at the end wall 30.

[Packaging box making]
Next, the box-making process (sealing process) of the packaging box 2 will be described with reference to FIG. It is assumed that the packaging box 2 is in a folded state with the passage piece 32 adhered to the inner surface of the end wall 30. The packaging box 2 may be assembled manually by an operator or automatically or semi-automatically by a box making machine. Here, as an example, a case where the worker assembles the packaging box 2 will be described.

  The operator bends the pair of end walls 30 and the pair of side walls 31 at a substantially right angle at the first folding curve L11. The pair of end walls 30 and the pair of side walls 31 are alternately and continuously provided to form a substantially rectangular cylindrical peripheral wall 2W. Next, after bending the pair of lower inner flaps 35 inside the peripheral wall 2W at the third fold curve L13, the operator bends the pair of lower outer flaps 36 inside the peripheral wall 2W at the third fold curve L13. The lower outer flap 36 is bonded (fixed) to the pair of lower inner flaps 35. As described above, the bottom surface (the third wall portion) of the packaging box 2 is formed by the pair of lower outer flaps 36 and the pair of lower inner flaps 35.

  Next, the operator puts a plurality of articles inside (on the bottom surface) from the upper end surface of the peripheral wall 2W. Subsequently, the operator bends the pair of upper and inner flaps 33 inside the peripheral wall 2W at the second fold curve L12, and then folds the pair of upper and outer flaps 34 inside the peripheral wall 2W at the second fold curve L12. The upper outer flap 34 is bonded to the pair of upper inner flaps 33. As described above, the top surface (the third wall portion) of the packaging box 2 is formed by the pair of upper and outer flaps 34 and the pair of upper and inner flaps 33.

  Thus, the packaging box 2 is in a sealed state (see FIG. 10). The packaging box 2 can be opened using the opening structure 37 (the first cutting line 20, the second cutting line 21, and the handle 22), similarly to the packaging box 1 according to the first embodiment. . Further, the packaging box 2 can be folded after use and connected to another packaging box 2 by using the handle 22 of the opening structure 37, similarly to the packaging box 1 according to the first embodiment. The packaging box 2 may be opened by opening the upper flaps 33, 34 or the lower flaps 35, 36.

  In the packaging box 2 according to the second embodiment described above, the opening structure 37 is formed on the pair of end walls 30 of the packaging box 2, but is not limited thereto. For example, the opening structure 37 is formed on the pair of side walls 31. (Not shown).

[Modification]
Although the packaging boxes 1 and 2 according to the first and second embodiments described above have a substantially rectangular parallelepiped appearance, the present invention is not limited to this. For example, as shown in FIG. 12, the packaging box 3 according to the modification may be a wrap-around case formed in a substantially octagonal column shape. When the packaging box 3 (peripheral wall 3W) is viewed from a plane (or bottom), the top wall 10 and the bottom wall 11 are formed in a substantially octagonal shape with four corners chamfered. As shown in FIG. 13, in the blank 7 of the packaging box 3, a square wall 38 is continuously provided between each side wall 12 and each inner flap 14 via a second fold curve L <b> 2. By arranging these four square walls 38 in the square portions of the packaging box 3, the packaging box 3 having a substantially octagonal column shape is formed (see FIG. 12). The other configuration of the packaging box 3 (blank 7) is the same as that of the packaging box 1 (blank 5) according to the first embodiment, and a description thereof will be omitted. Even when the opening structure 16 is applied to the substantially octagonal column-shaped packaging box 3 described above, the same operation and effect as those of the packaging box 1 according to the first embodiment can be obtained.

  Further, similarly to the above-described packaging box 3, inclined surfaces may be provided at four corners of the A-type packaging box, and the A-type packaging box may be formed in a substantially octagonal column shape (not shown). Alternatively, an inclined surface may be provided between the upper part of the peripheral wall and the top surface and between the lower part of the peripheral wall and the bottom surface, and the packaging box may be formed in a substantially octagonal column shape (not shown). . Further, an inclined surface may be provided between the top surface or the bottom surface and the peripheral wall to form the packaging box into a substantially hexagonal column shape (not shown).

  In addition, the packaging boxes 1 to 3 according to the first and second embodiments described above (including modified examples; the same applies to the following) are used in a folded state by using the handle 22 in the other packaging boxes 1. 3, but the present invention is not limited to this. For example, the handle portions 22 are used in a state in which the packaging pieces 1 to 3 are peeled off or the packaging boxes 1 to 3 that have been developed by cutting the peripheral walls 1W, 2W, and 3W, that is, the blanks 5 to 7 are returned. Then, it may be connected to other packaging boxes 1 to 3 (blanks 5 to 7).

  Further, in the packaging boxes 1 to 3 according to the first and second embodiments described above, the three cuff folding curves 23 are formed in each of the cuffs 22, but the present invention is not limited to this. . It is sufficient that one or more hand folding curves 23 are formed in accordance with the thickness of the corrugated cardboard sheet and the number of stacked packaging boxes 1 at the time of disposal. In the case where the number of the crease folding curve 23 is one, the wall thickness adjusting unit 25 does not exist, and the cuff unit 22 is constituted by the cuff main body 26. In addition, it is preferable to set the interval between the hand folding curves 23 (the width of the wall thickness adjusting unit 25) according to, for example, the thickness of the corrugated cardboard sheet.

  In the packaging boxes 1 to 3 according to the first and second embodiments described above, the pair of front and rear handle portions 22 are formed so that one curved side on the distal end side is opposed to the other. It is not limited to this. For example, a pair of front and rear hook portions 22 may be formed so that the hook folding curve 23 faces the first cutting line 20 side. Further, for example, the cuff portion 22 may be formed such that the crease folding curve 23 extends in the front-rear direction (lateral direction). Further, it is preferable that the handle portion 22 is formed so as to enter a gap between the articles housed in the packaging boxes 1 to 3 when pushed. That is, it is preferable that the shape, size, formation position, bending direction, and the like of the handle portion 22 be changed and adjusted according to the shape, size, number, and the like of the articles housed in the packaging boxes 1 to 3.

  Further, in the packaging boxes 1 to 3 according to the first and second embodiments described above, the pair of handle portions 22 are provided on both the front and rear sides with the first cutting line 20 interposed therebetween. Not limited. For example, on each end surface (end wall 30) of each of the packaging boxes 1 to 3, one handle portion 22 may be provided forward or rearward of the first cutting line 20 (not shown). In this case, after the end face (end wall 30) is cut along the first cutting line 20 using the hook part 22 (hand hole 22H) and one of the front and rear ends of the end face (end wall 30) is opened, The user can grasp the edge of the first cutting line 20 and open the other one of the front and rear of the end face (end wall 30).

  Further, the packaging boxes 1 to 3 according to the first and second embodiments are formed of a double-faced cardboard sheet made of paper, but the present invention is not limited to this. For example, the corrugated cardboard sheet may be a single-sided corrugated cardboard sheet in which a liner is adhered to one side of the middle shin 9A, or a double-sided corrugated cardboard sheet in which a single-sided corrugated cardboard sheet is laminated to a double-sided corrugated cardboard sheet. Further, for example, the packaging box 1 may be formed of a cardboard, a resin plate, or the like, instead of the paper cardboard sheet.

  Note that the description of the above embodiment shows one aspect of the packaging box according to the present invention, and the technical scope of the present invention is not limited to the above embodiment.

1,2,3 Packaging box 1W, 2W, 3W Perimeter wall 10 Top wall (third wall)
11 Bottom wall (third wall)
12 Side wall (second wall)
14 Inner flap (first wall)
15 outer flap (first wall)
DESCRIPTION OF SYMBOLS 20 1st cutting line 21 2nd cutting line 22 Hook part 22H Hook hole 23 Hook folding curve 24 Hook cutting line 27 Pressing projection part 30 End wall (1st wall part)
31 Side wall (second wall)
33 Upper inner flap (third wall)
34 Upper outer flap (third wall)
35 Lower inner flap (third wall)
36 Lower outer flap (third wall)

Claims (6)

Packaging boxes (1 to 3) for packaging articles,
A pair of first wall portions (14, 15, 30) arranged to face each other in the first direction;
A pair of second wall portions (12, 31) arranged to face each other in a second direction intersecting with the first direction;
A pair of third wall portions (10, 11, 33 to 36) arranged to face each other in a third direction intersecting the first direction and the second direction;
A first cutting line (20) extending in a third direction at each of the first wall portions;
A second cutting line (21) provided at a boundary between each of the first wall portions and each of the third wall portions,
A handle portion (22) formed on each of the first wall portions;
Each of the cuffs is defined by a crease folding curve (23) and a cuff cutting line (24) formed on the first wall portion, and is cut along the cuff cutting line to cut the hand. Forming a hook hole (22H) for the user to hook by being bent at the hook curve,
The packaging box divides the first wall portion into two along the first cutting line using the hook holes, and separates the first wall portion from the pair of third wall portions along the second cutting line. Opened by
When a plurality of the opened packaging boxes are stacked in a folded state or an unfolded state, the cuffs formed in one packaging box are bent along the cuff folding curve to be applied to the other packaging boxes. A packaging box, wherein one packaging box is connected to another packaging box by being inserted into the formed hook hole.   2. The packaging box according to claim 1, wherein the cuff portion is formed wider on the tip side than on the crease folding curve side. 3.   The packaging box according to claim 1, wherein a plurality of the crease folding curves are formed in the cuff portion in parallel with each other.   In the vicinity of both ends of the cuff folding curve of the cuff, in a state where the cuff of one packaging box passes through the cuff hole of another packaging box, 4. The packaging box according to claim 3, wherein a pair of pressing projections (27) are formed to be pressed against an edge of the hook hole. The pair of second wall portions and the pair of third wall portions are alternately connected to form a cylindrical peripheral wall (1W, 3W),
Each of the first walls is
A pair of inner flaps (14) connected to the first direction end portions of the pair of second wall portions,
A pair of outer flaps (15) that are connected to the first direction ends of the pair of third wall portions and are fixed to the pair of inner flaps with their distal ends separated from each other;
The first cutting line is formed on the outer flap;
The second cutting line is formed at a boundary between the outer flap and the third wall,
5. The packaging box according to claim 1, wherein the handle portion is formed on the inner flap and is exposed between the pair of outer flaps. 6. The pair of first wall portions and the pair of second wall portions are alternately connected to form a cylindrical peripheral wall (2W),
Each of the third walls is
A pair of inner flaps (33, 35) connected to end portions in the third direction of the pair of first wall portions,
A pair of outer flaps (34, 36), which are connected to the third direction ends of the pair of second wall portions and are fixed to the pair of inner flaps,
The first cutting line and the handle are formed on the first wall,
The packaging box according to any one of claims 1 to 4, wherein the second cutting line is formed at a boundary between the first wall portion and the pair of inner flaps.

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