JP2015205705A - Packing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing box which can be re-sealed reliably without impairing the external appearance even if an insertion flap is not provided.SOLUTION: A packing box 1 comprises: a cylindrical peripheral wall part 10; a first flap 11 which continues to one end of the peripheral wall part 10 through a first folding line F1, and is disposed so as to close an opening of the one end side; a second flap 12 which continues to the one end of the peripheral wall part 10 through a second folding line F2, and is superposed and fixed on the first flap 11; and a pressed part 8 composed of a portion surrounded by the first folding line F1 and a cut line 40 in the peripheral wall part 10. The packing box 1 is provided with an inner plate part 30 superposed on the inner side of the peripheral wall part 10. The inner plate part 30 is provided with: a third folding line F3 disposed on the other end side from the cut line 40; a fixed face part 32 composed of a portion of the other end side across the third folding line F3, and fixed to the peripheral wall part 10; and an inner cover face part 34 which continues to the fixed face part 32 through the third folding line F3, and is disposed so as to be superposed on the inner side of the pressed part 8 without being fixed to the peripheral wall part 10.

Description

  The present invention relates to a packaging box that is closed by overlapping a plurality of flaps.

  As a typical example of a packaging box that closes both ends of a rectangular tubular peripheral wall with flaps, the opening is closed by overlapping the insertion flap on the outside of a pair of side flaps, and the tip of the insertion flap is inside the peripheral wall. A seal end carton that is sealed by inserting it into the inside, and a seal end that is sealed by adhering the outer flap to the inner flap by closing the opening by overlapping the inner and outer flaps on the outside of the pair of side flaps. A carton is known.

  Tack end cartons require an insertion flap insertion process when closing the opening, whereas sealed end cartons do not require such an insertion process and are therefore easily and quickly sealed by an automatic packaging machine. There is an advantage that can be stopped.

JP 2005-231659 A

  However, since the seal end carton is not provided with an insertion flap like the tack end carton, there is a problem that it cannot be easily resealed once it is opened.

  Further, in order to enable the seal end carton to be resealed, it is conceivable to configure the pair of side flaps so that they can be engaged with each other. Thereby, after opening, a pair of side flaps are piled up on the outer side of the outer flap, and they can be resealed by engaging them.

  However, in this case, since the pair of side flaps are hidden inside the outer flap and the inner flap before opening, the pair of side flaps and their engaging portions are exposed after resealing. The problem that the external appearance of a packaging box is impaired arises. In addition, when the side flaps are disengaged from each other, the packaging box is easily re-sealed. Therefore, there is a problem that the sealed state cannot be reliably maintained as compared with the resealed state by inserting the insertion flap.

  Then, this invention makes it a subject to provide the packaging box which can be resealed reliably, without impairing an external appearance, without providing an insertion flap.

In order to solve the above problems, the packaging box according to the present invention is:
A cylindrical peripheral wall having openings at both ends in the axial direction;
A first flap connected to one end of the peripheral wall portion via a first crease line, and arranged to close the opening on the one end side;
A second flap connected to the one end of the peripheral wall portion via a second crease line, and overlapped and fixed to the first flap;
A tear line extending from one end of the first crease line through the peripheral wall to the other end of the first crease line;
A portion to be surrounded by the first crease line and the cut line in the peripheral wall portion, and a pressed portion cut from the peripheral wall portion along the cut line by being pushed from the outside;
An inner plate overlapped inside the peripheral wall, and
The inner plate portion is
A third crease line disposed on the other end side of the cut line in the axial direction;
A fixed surface portion that is configured by a portion on the other end side across the third crease line, and is fixed to the peripheral wall portion;
An inner cover surface portion that is connected to the fixed surface portion via the third crease line and is disposed on the inner side of the pressed portion without being fixed to the peripheral wall portion.

  In the present specification, when the term “outside” or “inside” is simply used, these terms mean “outer box” or “inside” of the packaging box.

  Further, in the present specification, the “crease line” means a linear portion that has been subjected to a process for facilitating folding. Specific examples of the process for facilitating folding include, for example, a process of forming a groove-like “ruled line” by embossing, and a linear “half-cut” by inserting a cutting blade to a depth of about half the thickness of the blank sheet. A half-cut process for forming a plurality of “cuts” so as to be arranged at intervals on a crease line, or a “lead rule” in which half-cuts or cuts are alternately arranged with groove-like ruled lines The process etc. which form are mentioned.

  The packaging box according to the present invention is opened by pressing the pressed portion provided on one end side of the cylindrical peripheral wall portion from the outside, so that the pressed portion is separated from the peripheral wall portion. When opened in this way, the pressed part, the first flap connected to the pressed part via the first fold line, and the second flap fixed to the first flap pass through the second fold line. A lid piece connected to the peripheral wall portion is formed. This lid piece has a function like an insertion flap, and can be easily resealed by being inserted into the inner plate portion that is overlapped inside the peripheral wall portion.

  Moreover, when it is resealed in this way, the part which is not inserted inside the inner-plate part in a cover piece, ie, the part which consists of a 1st flap and a 2nd flap, has the same external appearance as before opening. Therefore, the designability of the resealed packaging box can be maintained well.

  Further, according to the present invention, the inner plate portion includes an inner cover surface portion that is superimposed on the inner side of the pressed portion, and a fixed surface portion that is connected to the inner cover surface portion via the third fold line and is fixed to the peripheral wall portion. Thus, the packaging box can be easily opened by pushing from the outside. More specifically, when the pressed portion is separated from the peripheral wall portion and pushed inward at the time of opening, the inner cover surface portion is pushed inward by the pressed portion so as to rotate via the third fold line. . Thereby, it can prevent that the movement to the inner side of a to-be-pressed part is blocked | prevented by the inner-plate part, and can open a packaging box smoothly.

It is a perspective view which shows the packaging box which concerns on 1st Embodiment. It is the perspective view which looked at the packaging box before sealing from the back side. It is the sectional view on the AA line of FIG. 1 which shows the principal part of a packaging box. It is a perspective view which shows the state which opened the packaging box. It is the BB sectional view taken on the line of FIG. 4 which shows the principal part of the packaging box in the state of FIG. It is a perspective view which shows the state which opened the cover of the packaging box. It is a perspective view which shows the state which resealed the packaging box. It is CC sectional view taken on the line of FIG. 7 which shows the principal part of the packaging box in the state of FIG. It is a top view which shows the blank sheet which comprises the packaging box shown in FIG. It is a top view which shows the process of assembling a packaging box using the blank sheet shown in FIG. FIG. 11 is a plan view illustrating a process continued from FIG. 10. It is a top view which shows the blank sheet which comprises the packaging box which concerns on 2nd Embodiment. It is a top view which shows the process of assembling a packaging box using the blank sheet shown in FIG. FIG. 14 is a plan view showing a step subsequent to FIG. 13.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, terms indicating directions such as “up”, “down”, “up / down”, “left / right”, and “front / rear” are assembled and sealed unless otherwise specified. It shall point in the direction when the packaging box in the state is viewed from the front side.

[First Embodiment]
As shown in FIGS. 1 and 2, the packaging box 1 according to the first embodiment includes a rectangular tubular peripheral wall portion 10 having openings at both ends in an axial direction 90 extending in the vertical direction, and an upper end of the peripheral wall portion 10. 4 flaps 11, 12, 13, and 14 and four flaps 21, 22, 23, and 24 connected to the lower end of the peripheral wall portion 10.

  The peripheral wall portion 10 includes a front surface portion 2, a back surface portion 3 that faces the front surface portion 2, and a first side surface portion 4 and a second side surface portion 5 that straddle the front surface portion 2 and the back surface portion 3. The front part 2 and the back part 3 are arranged in parallel to each other and have the same width in the left-right direction. The 1st side surface part 4 and the 2nd side surface part 5 are mutually arrange | positioned in parallel, and have the mutually equal width | variety in the front-back direction. The front-rear direction widths of the first side surface part 4 and the second side surface part 5 are smaller than the left-right direction widths of the front surface part 2 and the back surface part 3. As shown in FIG. 2, the first side surface portion 4 includes an outer side surface plate portion 6 and an inner side surface plate portion 7 that overlap each other. Further, an inner plate portion 30 is provided inside the front portion 2 so as to overlap.

  Specifically, the upper flaps 11, 12, 13, and 14 are the outer flap 11 as the first flap connected to the upper end of the front portion 2, the inner flap 12 as the second flap connected to the upper end of the back surface portion 3, The side flaps 13 are connected to the upper end of the first side surface portion 4, and the side flaps 14 are connected to the upper end of the second side surface portion 5.

  The upper four flaps 11-14 are folded from the inside so as to overlap in the order of the pair of side flaps 13, 14, the inner flap 12, and the outer flap 11 (see FIG. 3). The pair of side flaps 13 and 14 do not interfere with each other in the folded state, and a gap is generated between the front end portions of the side flaps 13 and 14. The inner flap 12 is folded without being fixed to the outside of the side flaps 13 and 14. The inner flap 12 has a trapezoidal shape that becomes slightly thinner toward the tip, and has a size that closes most of the upper opening of the peripheral wall 10. The outer flap 11 is folded so as to close the upper end opening of the peripheral wall portion 10 from the side opposite to the inner flap 12, is overlapped on the outer side of the inner flap 12, and is fixed by, for example, adhesion. The outer flap 11 has a trapezoidal shape that becomes slightly thinner toward the tip, and has a size that closes most of the upper opening of the peripheral wall 10. The upper end opening of the peripheral wall 10 is completely closed by folding the four flaps 11 to 14, and sealed by bonding the outer flap 11 and the inner flap 12.

  Specifically, the lower flaps 21, 22, 23, and 24 are an outer flap 21 that continues to the lower end of the front portion 2, an inner flap 22 that continues to the lower end of the back surface portion 3, and a side that continues to the lower end of the first side surface portion 4. The side flaps 24 are connected to the lower end of the flap 23 and the second side surface portion 5.

  The configurations of the lower outer flap 21, the inner flap 22, and the pair of side flaps 23, 24 are the same as the upper outer flap 11, the inner flap 12, and the pair of side flaps 13, 14, respectively. The lower flaps 21 to 24 are folded from the inside so as to overlap the pair of side flaps 23 and 24, the inner flap 22 and the outer flap 21 in this order, and the inner flap 22 and the outer flap 21 are fixed to each other by adhesion, for example. Is done. By these four flaps 21 to 24, the lower end opening of the peripheral wall 10 is sealed in a completely closed state. The packaging box 1 whose upper and bottom surfaces are sealed has a substantially rectangular parallelepiped overall shape.

  As described above, the packaging box 1 is a sealed end carton in which the upper surface and the bottom surface are each sealed with four flaps. Therefore, when the packaging box 1 is closed, there is no need for the insertion flap insertion process that is performed when the tack end carton is closed. Therefore, the top and bottom surfaces of the packaging box 1 can be easily and quickly closed by the automatic packaging machine. it can.

  The packaging box 1 is opened by breaking the front part 2 along a tear line 40 provided in the front part 2.

  The cut line 40 is provided so as to extend from one end portion of the crease line F1 provided at the boundary between the front portion 2 and the upper outer flap 11 to the other end portion of the crease line F1 through the front portion 2. A portion surrounded by the crease line F <b> 1 and the cut line 40 in the front part 2 is a pressed part 8 that is pushed in from the outside by a finger of a person opening the packaging box 1. As shown in FIGS. 4 and 5, when the pressed portion 8 is pushed in from the outside, the pressed portion 8 can be cut off from the front portion 2 along the cut line 40, thereby opening the packaging box 1.

  Since the front part 2 continues to the upper outer flap 11 only in the pressed part 8, when the pressed part 8 is cut off from the front part 2, the outer flap 11 is separated from the front part 2 together with the pressed part 8. It is. Further, since the outer flap 11 is bonded to the inner flap 12, the outer flap 11 and the pressed portion 8 connected thereto are connected to the back surface portion 3 via the inner flap 12. Therefore, as shown in FIG. 6, by opening the packaging box 1, a lid 16 in which the pressed portion 8, the outer flap 11, and the inner flap 12 are integrated is formed.

  The lid body 16 has a shape like an insertion flap, and the packaging box 1 can be resealed by inserting the lid body 16 as described later. The lid body 16 includes an outer flap 11 and an inner flap 12, and includes an upper surface portion 18 disposed on the upper surface of the packaging box 1 in a resealed state, and an insertion portion 19 composed of the pressed portion 8.

  As shown in FIG. 2, the inner plate portion 30 superimposed on the inner side of the front surface portion 2 is continuous with the side surface plate portion 7 on the inner side of the first side surface portion 4 via a crease line F <b> 15.

  The inner plate portion 30 includes a crease line F3 extending from one end to the other end of the inner plate portion 30 in the left-right direction, a fixed surface portion 32 composed of a lower portion sandwiching the crease line F3, and a fixed surface portion via the crease line F3. 32, and an inner cover surface portion 34 continuous to 32. The crease line F3 is arranged to extend in the horizontal direction below the cut line 40 (see FIGS. 3 to 5). The fixed surface portion 32 is fixed to the back surface of the front portion 2 by, for example, adhesion, and the inner cover surface portion 34 is arranged so as not to be fixed inside the pressed portion 8. Thereby, when the inner plate part 30 bends along the crease line F3 in a state in which the fixing surface part 32 is fixed to the front part 2, the inner cover surface part 34 can rotate around the crease line F3.

  The fixed surface portion 32 is continuous with the inner side surface plate portion 7 via a crease line F15, and the inner cover surface portion 34 is continuous with the inner side surface plate portion 7 via a cut line 50 continuous above the crease line F15. When an external force in the direction of rotating the inner cover surface portion 34 about the crease line F3 is applied to the inner cover surface portion 34, the inner cover surface portion 34 can be easily separated from the side plate portion 7 along the cut line 50. However, the inner cover surface portion 34 may be provided away from the side plate portion 7 from the beginning.

  As shown in FIGS. 4 and 5, the pressed portion 8 is gradually cut off from the lower end side by being pushed from the outside. As the separation of the pressed portion 8 from the front portion 2 proceeds, the tip of the pressed portion 8 moves inward, and the inner cover surface portion 34 moves inward by the tip of the pressed portion 8. Pushed in. When this pushing force is applied, first, the inner cover surface portion 34 is separated from the side plate portion 7 along the cutoff line 50. When the inner cover surface portion 34 is separated from the side plate portion 7, the inner cover surface portion 34 rotates around the crease line F <b> 3 so as to be pushed inward by the tip of the pressed portion 8. As the inner cover surface portion 34 rotates in this manner, the inner plate portion 30 is prevented from being prevented from moving inwardly of the pressed portion 8. Therefore, the cut-out of the pressed portion 8 by pressing from the outside can be completed smoothly, and thereby the packaging box 1 can be opened reliably.

  As shown in FIG. 2, the upper end 36 of the inner cover surface portion 34 has a pair of horizontal portions 37 a and 37 b arranged on the same straight line extending in the horizontal direction and spaced apart, and a pair of horizontal portions 37 a and 37 b. And a notch 38 connected while being recessed. In a state before the pressed portion 8 is cut off, that is, in a state where the inner cover surface portion 34 is superimposed on the inner side of the pressed portion 8, the upper end 36 of the inner cover surface portion 34 is the boundary between the front portion 2 and the outer flap 11. It is disposed along the crease line F1 in the vicinity of the lower side of the crease line F1.

  Therefore, as shown in FIG. 6, when the lid 16 is opened after opening, most of the blank portion of the front portion 2 generated by the separation of the pressed portion 8 is blocked by the inner cover surface portion 34. Accordingly, it is possible to suppress the deterioration of the design property due to the part of the front portion 2 being cut off and to maintain the accommodation function performed by the packaging box 1 in a favorable manner.

  Further, in the state where the pressed part 8 is cut off, the inner cover surface part 34 is arranged so as to constitute the upper edge part of the front part 2 instead of the pressed part 8. Lowering of the upper end height is suppressed. Therefore, as shown in FIGS. 7 and 8, the insertion portion 19 of the lid body 16 formed at the time of opening can be inserted into the inner cover surface portion 34. Thus, the packaging body 1 can be resealed easily because the cover body 16 functions like an insertion flap.

  In the resealed state shown in FIG. 7, the upper surface of the packaging box 1 has exactly the same appearance as the state before opening shown in FIG. 1, and the appearance of the front part 2 is also different from the pressed part 8 in that the inner cover surface part 34 is Except for the point exposed, it is the same as the appearance before opening shown in FIG. In the resealed state, the inner cover surface portion 34 is disposed along the front surface portion 2, and the heel appears to be continuous above the front surface portion 2. Moreover, the exposed part of the inner cover surface part 34 is a flat surface without any irregularities, and there is no particular part that impairs the appearance of the front part 2. Therefore, according to this embodiment, even if it reseals, the external appearance of the packaging box 1 can be maintained favorable.

  Further, in the resealed state, since the insertion portion 19 of the lid body 16 is inserted deeply into the inner cover surface portion 34, the lid body 16 can be prevented from being accidentally opened and re-sealed. Furthermore, according to this embodiment, since it can reseal only by inserting the insertion part 19 of the cover body 16 into the inner side cover surface part 34, it is not necessary to form any hole for engagement for reseal. Therefore, when the packaging box 1 is manufactured, a step of dropping a piece of paper in order to form a hole is not necessary, thereby preventing mixing of the piece of paper.

  Furthermore, according to this embodiment, since the notch 38 is provided in the upper end 36 of the inner cover surface part 34, when opening the lid 16 of the resealed packaging box 1, the insertion part 19 of the lid 16 is provided. It is easy to put a finger on a portion exposed by the notch 38 in FIG. Therefore, the lid body 16 can be easily opened.

  As shown in FIG. 2, the back surface portion 3 is provided with a cut line 48 for opening the bottom surface of the packaging box 1, and a portion surrounded by the cut line 48 and the crease line F <b> 8 in the back surface portion 3 is The pressed portion 9 is pushed from the outside by a human finger. When the pressed portion 9 is pushed in from the outside, the pressed portion 9 can be cut off from the back surface portion 3 along the cut line 48, whereby the inner flap 22 is separated from the back surface portion 3 together with the pressed portion 9, and the peripheral wall The lower end opening of the part 10 can be opened.

  The packaging box 1 is assembled by bending the blank sheet 20 shown in FIG. 9 shows the blank sheet 20 viewed from the inner surface side of each part 2, 3, 5, 6, 7, 11, 12, 13, 14, 21, 22, 23, 24, 30 constituting the packaging box 1. It is a top view.

  In the blank sheet 20 shown in FIG. 9, the side plate part 6, the front part 2, the second side part 5, the back part 3, and the first side part 4 on the outer side of the first side part 4 in order from the left side in FIG. 9. The side plate portion 7 and the inner plate portion 30 are connected to each other via crease lines F11, F12, F13, F14, and F15 extending in the vertical direction.

  An upper side flap 13 is connected to the upper side of the outer side surface plate portion 6 via a fold line F5 extending in the horizontal direction, and a lower side of the outer side surface plate portion 6 is connected to a fold line F9 extending in the horizontal direction. The lower side flaps 23 are connected.

  The upper outer flap 11 is connected to the upper side of the front portion 2 via a fold line F1 extending in the horizontal direction, and the lower outer flap is connected to the lower side of the front portion 2 via a fold line F7 extending in the horizontal direction. 21 are connected. As described above, the pressed portion 8 is provided at the upper edge portion of the front portion 2, and the cutoff line 40 is provided along the edge portion of the pressed portion 8. The cut line 40 is composed of a plurality of cuts arranged in a perforation. A bulging portion 42 that bulges downward is provided at the center of the cutoff line 40, and a lower end portion of the bulging portion 42 is constituted by a horizontal portion 42a that extends in the horizontal direction. Thereby, the pressed portion 8 is formed with a protruding portion 8a protruding downward, and the lower end portion of the protruding portion 8a is a horizontal portion 8b extending in the horizontal direction.

  The horizontal portion 8b is arranged in parallel to the crease line F1 and the crease line F3 in the sealed state of the packaging box 1. When the pressed portion 8 rotates about the crease line F1 during opening, the horizontal portion 8b moves to the inside of the packaging box 1 while maintaining the state of being horizontally arranged. Further, the inner cover surface portion 34 rotates around a crease line F3 parallel to the crease line F1. Therefore, the inner cover surface portion 34 can be reliably pushed down inward while pressing substantially the entire horizontal portion 8 b against the inner cover surface portion 34 of the inner plate portion 30. Thereby, it is possible to reliably prevent the inner plate portion 30 from blocking the opening by pressing from the outside.

  The upper side flap 14 is connected to the upper side of the second side surface portion 5 via a fold line F6 extending in the horizontal direction, and the lower side of the second side surface portion 5 is connected to the lower side via a fold line F10 extending in the horizontal direction. The side flaps 24 on the side are continuous.

  The upper inner flap 12 is connected to the upper side of the back surface portion 3 via a fold line F2 extending in the horizontal direction, and the lower inner flap is connected to the lower side of the back surface portion 3 via a fold line F8 extending in the horizontal direction. 22 are connected. As described above, the pressed portion 9 is provided at the lower edge portion of the back surface portion 3, and the cut line 48 is provided along the edge portion of the pressed portion 9. The cut line 48 is composed of a plurality of cuts arranged in a perforation. The cut line 48 extends from one end portion of the crease line F8 through the back surface portion 3 to the other end portion of the crease line F8. The shape of the cut line 48 is, for example, an arc shape that bulges upward.

  The upper end 71 of the side surface plate portion 7 inside the first side surface portion 4 extends in a direction inclined downward toward the right side in FIG. 9, and the lower end 72 of the side surface plate portion 7 is directed toward the right side in FIG. It extends in a direction inclined upward. Thereby, the shape of the side plate part 7 has a trapezoidal shape that becomes thinner toward the right side in FIG. 9. On the outer surface (the back surface in FIG. 9) of the inner side plate portion 7, a linear glue portion 64 to which glue is applied is provided along the crease line F14.

  The shape of the inner plate part 30 is substantially rectangular. With respect to the vertical direction 90, the size of the inner plate portion 30 is about half of the size of the side plate portion 7, and the inner plate portion 30 is continuous with the upper half portion of the side plate portion 7. At the boundary portion between the inner plate portion 30 and the side plate portion 7, the inner plate portion 30 protrudes above the side plate portion 7.

  The above-described notch 38 is provided at the upper end 36 of the inner plate portion 30. The crease line F3 of the inner plate portion 30 is constituted by, for example, a lead ruler in which groove-like ruled lines and notches formed by embossing are alternately arranged. Since the plurality of cuts are provided on the crease line F3, the inner plate portion 30 is easily broken along the crease line F3. However, the crease line F3 may be a crease line other than the lead crease. For example, the crease line is formed only by a plurality of notches arranged on a straight line at intervals or only by a groove-like rule line formed by embossing. F3 may be configured.

  On the outer surface (back surface in FIG. 9) of the fixed surface portion 32 of the inner plate portion 30, a linear glue portion 62 to which glue is applied is formed at the end opposite to the inner side plate portion 7. It is provided along.

  The crease line F15 is provided at the boundary between the fixed surface portion 32 of the inner plate portion 30 and the inner side surface plate portion 7. The crease line F15 is constituted by, for example, a lead ruler in which groove-like ruled lines formed by embossing and cuts are alternately arranged. By providing a plurality of cuts on the crease line F15, the inner plate part 30 can be easily rotated relative to the side plate part 7 with the crease line F15 as an axis, thereby the side plate part 7 and the inner plate. It becomes easy to make the part 30 track | track while suppressing a clearance gap with respect to the side plate part 6 and the front part 2 of the outer side which are piled up outside these.

  At the boundary between the inner plate portion 30 and the side plate portion 7, the above-described cut line 50 for separating the inner cover surface portion 34 from the side plate portion 7 is provided continuously above the crease line F15. Thereby, when a force is applied to the inner plate part 30 from the outside of the sealed packaging box 1, a break along the cutoff line 50 occurs first, thereby breaking other parts of the inner plate part 30, for example, The tearing along the crease line F3 or the crease line F15 can be prevented. Even if the tearing along the tear line 50 occurs before opening, the function of the inner plate part 30 described above is not impaired.

  The cut line 50 is composed of, for example, a plurality of zipper-shaped cuts. In this case, the direction of the zipper-shaped cut forming the cut line 50 is not limited. For example, a part of the upper end side of the cut line 50 may be a zipper-shaped cut that promotes cutting in the direction from top to bottom. A part of the lower end side of the cutoff line 50 may be configured by a zipper-shaped cut that promotes separation in the direction from the bottom to the top.

  The procedure for assembling the packaging box 1 using the blank sheet 20 will be described with reference to FIG. 9 and FIG.

  First, as shown in FIGS. 9 and 10, the inner plate portion 30 is folded inside the side plate portion 7 by bending along the crease line F15.

  Next, as shown in FIGS. 10 and 11, the inner plate portion 30, the side plate portion 7, and the back portion 3 are folded inside the front portion 2 and the second side portion 5 by bending along the crease line F <b> 13. The fixing surface portion 32 of the inner plate portion 30 is bonded to the inner surface of the front portion 2 by the glue portion 62. At this time, the fixed surface portion 32 is bonded to the front portion 2 at the end opposite to the crease line F15.

  Subsequently, the outer side plate portion 6 is folded outside the inner side plate portion 7 by bending along the crease line F <b> 11, and the inner side plate portion 7 is placed on the inner surface of the outer side plate portion 6 by the glue portion 64. Glue. Thereby, the folded packaging box 1 is completed.

  Thereafter, the four corners of the peripheral wall portion 10 along the crease lines F11, F12, F13, and F14, and the corner along the crease line F15 that is superimposed on the inside of the corner along the crease line F11 among these, are substantially perpendicular. When this happens, the packaging box 1 is formed with the top and bottom surfaces open as shown in FIG. As described above, since the fixed surface portion 32 of the inner plate portion 30 is bonded to the front surface portion 2 at the end opposite to the crease line F15, the fixed surface portion 32 is detached from the front surface portion 2 when the corner is raised. Can be prevented.

  Subsequently, the upper flaps 11 to 14 and the lower flaps 21 to 24 are folded as described above, and the outer flaps 11 and 21 are bonded to the inner flaps 12 and 22, respectively. And the bottom is sealed, and the packaging box 1 in the sealed state shown in FIG. 1 is completed.

[Second Embodiment]
The procedure for assembling the packaging box according to the second embodiment will be described with reference to FIGS.

  Note that in the second embodiment, description of configurations and effects similar to those of the first embodiment will be omitted. 12 to 14, members having the same functions as those in the first embodiment are denoted by the same reference numerals.

  The packaging box according to the second embodiment has the same structure as the packaging box 1 according to the first embodiment except for the dimensions of each part, but the assembly procedure is different from that of the first embodiment. The packaging box according to the second embodiment is assembled using the blank sheet 120 shown in FIG.

  The configuration of the blank sheet 120 is substantially the same as that of the blank sheet 20 in the first embodiment except for the size of each part and the position of the glue part 62. The glue part 62 is provided at a substantially central part in the left-right direction of the fixed surface part 32, and this is different from the first embodiment in which the glue part 62 is provided at the end of the fixed surface part 32.

  When assembling, first, as shown in FIGS. 12 and 13, the side plate portion 7 inside the inner plate portion 30 and the first side portion 4 is made to be the rear portion 3 and the second side portion by bending along the crease line F <b> 14. Fold it inside 5

  Next, as shown in FIGS. 13 and 14, the remaining portion is folded inside the side plate 6 outside the front portion 2 and the first side portion 4 by bending along the crease line F12. The fixed surface portion 32 of the inner plate portion 30 is bonded to the inner surface of the front portion 2 by the glue portion 62, and the inner side plate portion 7 is bonded to the inner surface of the outer side plate portion 6 by the glue portion 64. Thereby, the folded packaging box 1 is completed.

  Thereafter, the four corners of the peripheral wall portion 10 along the crease lines F11, F12, F13, and F14, and the corner along the crease line F15 that is superimposed on the inside of the corner along the crease line F11 among these, are substantially perpendicular. When this happens, a packaging box (see FIG. 2) with the top and bottom surfaces open is formed. In the folded state, the inner plate portion 30 and the side plate portion 7 are arranged on the same plane with the crease line F15 interposed therebetween, and are bent along the crease line F15 for the first time when the corner is raised. At this time, the inner plate portion 30 can easily follow the inner surface of the front portion 2 as compared to the case where the plate is raised at a right angle from the state bent about 180 ° along the crease line F15 as in the first embodiment. Therefore, even if the glue part 62 is provided in the center part of the fixed surface part 32, the adhesion state of the fixed surface part 32 with respect to the front part 2 can be maintained favorably.

  Finally, the upper flaps 11 to 14 and the lower flaps 21 to 24 are folded as described above, and the outer flaps 11 and 21 are bonded to the inner flaps 12 and 22, respectively. The bottom surface is sealed to complete a sealed packaging box (see FIG. 1).

  While the present invention has been described with reference to the above-described embodiments, the present invention is not limited to the above-described embodiments.

  For example, in the above-described embodiment, the case where the outer flap 11 and the inner flap 12 are fixed by bonding has been described, but these flaps may be fixed by a method other than bonding.

  Moreover, although the case where the 1st flap continued to the to-be-pressed part 8 was piled up on the outer side of the 2nd flap was demonstrated, in this invention, a 1st flap may be piled up on the inner side of the 2nd flap.

  Furthermore, you may apply the reseal structure of this invention not only to one opening part of a surrounding wall part but to the both-ends opening part of a surrounding wall part.

  Furthermore, in the above-described embodiment, the case where the present invention is applied to the packaging box 1 having the peripheral wall portion 10 having a rectangular cross section has been described. However, the cross sectional shape of the peripheral wall portion is not limited to a rectangular shape. The present invention can also be applied to a peripheral wall portion having a polygonal section.

  As described above, according to the present invention, it is possible to provide a packaging box that can be reliably resealed without damaging the appearance without providing an insertion flap. There is a possibility of being suitably used for a sealed end carton.

DESCRIPTION OF SYMBOLS 1 Packaging box 2 Front part 3 Back part 4 1st side surface part 5 2nd side surface part 6 Outer side surface board part 7 Inner side surface board part 10 Peripheral wall part 11 Outer flap (1st flap)
12 Inner flap (second flap)
13, 14 Side flap 20 Blank sheet 30 Inner plate portion 32 Fixed surface portion 34 Inner cover surface portion 36 Upper end of inner cover surface portion 38 Notch 40 Cut line 50 Cut line F1 Crease line (first crease line)
F2 crease line (2nd crease line)
F3 crease line (3rd crease line)
F15 crease line (4th crease line)

In order to solve the above problems, the packaging box according to the present invention is:
Formed in a cylindrical shape having openings at both ends in the axial direction , a front wall , a side wall adjacent to the front wall, and a peripheral wall having a back wall facing the front wall;
A first flap arranged at one end of the peripheral wall portion through the first fold line to the front portion, and arranged to close the opening on the one end side;
A second flap which is connected to the back surface portion via a second crease line at the one end of the peripheral wall portion and is overlapped and fixed to the first flap;
A first tear line extending to the other end of the first fold line through said front portion from one end portion of the first fold line,
A pressed portion that is configured by a portion surrounded by the first crease line and the first cut line in the front portion, and is cut from the front portion along the cut line by being pushed from the outside.
An inner plate portion stacked on the inner side of the front portion ,
The side portion is
The outer side plate portion connected to the front portion, and the inner side plate portion stacked on the inner side of the outer side plate portion,
The inner plate portion is
A third crease line disposed on the other end side of the first cut line in the axial direction;
A fixed surface portion configured by the portion on the other end side across the third crease line, and fixed to the front portion ;
An inner cover surface portion arranged on the inner side of the pressed portion without being fixed to the front portion, and connected to the fixed surface portion via the third crease line,
In a state where the inner cover surface portion is superimposed on the inner side of the pressed portion, the tip end portion on the one end side in the axial direction of the inner cover surface portion is disposed along the first fold line,
The fixed surface portion is connected to the inner side surface plate portion via a fourth crease line extending in the axial direction,
The inner cover surface portion is connected to the inner side surface plate portion via a second cut line provided to be continuous with the one end side in the axial direction of the fourth fold line .

Claims (5)

A cylindrical peripheral wall having openings at both ends in the axial direction;
A first flap connected to one end of the peripheral wall portion via a first crease line, and arranged to close the opening on the one end side;
A second flap connected to the one end of the peripheral wall portion via a second crease line, and overlapped and fixed to the first flap;
A tear line extending from one end of the first crease line through the peripheral wall to the other end of the first crease line;
A portion to be surrounded by the first crease line and the cut line in the peripheral wall portion, and a pressed portion cut from the peripheral wall portion along the cut line by being pushed from the outside;
An inner plate overlapped inside the peripheral wall, and
The inner plate portion is
A third crease line disposed on the other end side of the cut line in the axial direction;
A fixed surface portion that is configured by a portion on the other end side across the third crease line, and is fixed to the peripheral wall portion;
A packaging box, comprising: an inner cover surface portion that is connected to the fixed surface portion via the third crease line, and is disposed on the inner side of the pressed portion without being fixed to the peripheral wall portion.   The packaging box according to claim 1, wherein a cut is provided on the third fold line.   In the state where the inner cover surface portion is overlapped on the inner side of the pressed portion, a tip portion on the one end side in the axial direction of the inner cover surface portion is disposed along the first fold line. The packaging box according to claim 1 or 2.   The packaging box according to claim 3, wherein a notch recessed at the other end side in the axial direction is provided at the distal end portion of the inner cover surface portion. The peripheral wall portion includes a side surface portion constituted by an outer side surface plate portion and an inner side surface plate portion overlapping each other,
The packaging box according to any one of claims 1 to 4, wherein the fixed surface portion is connected to the inner side surface plate portion via a fourth crease line.

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