JP2011230806A - Packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change a cross sectional shape and a longitudinal sectional shape of a storage space without reducing rigidity.SOLUTION: In the packaging box, end walls 10A, 10B and sidewalls 11A, 11B are continuously formed through first folding lines 13a-13d, flaps 14A, 14B, 15A, 15B constituting a closing lid are continuously formed in at least one-side end edges of them through a folding line 18a. In the packaging box, third folding lines 19 extending, at an inclination angle of about 45°, to the sidewalls 11A, 11B or the end walls 10A, 10B from crossing positions between the first folding lines and the second folding line 18a positioned in the opposite angle are formed, fourth folding lines 20 extending parallel to the first folding lines 13a-13d are formed across both end edges in a longitudinal direction such that the fourth folding lines 20 cross the third folding lines 19, and a fifth folding line 22 extending parallel to the second folding line 18a is formed across both side edges in a lateral direction such that the fifth folding line 22 passes the third folding lines 19 and the intersection positions with the third folding lines 19.

Description

  The present invention relates to a packaging box capable of changing the cross-sectional shape and vertical cross-sectional shape of a storage space for storing products.

  In recent years, various products can be ordered and purchased by telephone or the Internet. And a purchaser may purchase goods which are not packed with a packaging box, or two or more goods simultaneously. For this reason, a mail-order company that sells this type needs to prepare a dedicated packaging box for transportation.

  However, since each product has a different size, packaging boxes having a plurality of types of sizes (volumes) and shapes (cross-sectional shapes) are required. However, preparing a plurality of types of packaging boxes is problematic in that the cost is high and storage space is also required. If a large packaging box is prepared, it is of course possible to accommodate small items, but the wasteful space created inside must be filled with cushioning material, which increases the cost. A storage space for cushioning materials is required.

  Therefore, in Patent Documents 1 and 2, in a packaging box provided with a pair of end walls and side walls, and an upper flap and a lower flap that constitute a closing lid on these end edges, A packaging box that can change the surface shape is provided. This packaging box is provided with a plurality of variable width folding curves extending in parallel in the vertical direction and a plurality of variable height folding curves extending in parallel in the horizontal direction. In addition, a break line is provided along the total height variable folding curve from the front end of the flap to the width variable folding curve. Thereby, the cross-sectional shape of the accommodation space can be changed by bending the predetermined folding width curve. In addition, the vertical cross-sectional shape of the accommodation space can be changed by breaking the width-variable folding curve along a predetermined breaking line and bending it with the total height-variable folding curve.

  However, since the packaging box of Patent Documents 1 and 2 has a long dimension for breaking the wall surface along the breaking line, there is a problem that the sealing workability including the breaking work is poor. Moreover, since there are many broken parts which comprise a broken line, there exists a problem that the rigidity of a packaging box falls.

  Further, in Patent Document 3, a folding curve extending at an inclination angle of about 45 degrees is provided from the front end corner of the flap to the folding curve that defines the flap and the end wall or the flap and the side wall, and passes through the intersection. Thus, the packaging box provided with the folding line for variable width extending in the vertical direction over both end edges is provided. Furthermore, in Patent Document 4, a folding line extending at an inclination angle of about 45 degrees is provided from the front end corner of the flap to the continuous end wall or side wall, and in the lateral direction so as to pass through the end. A packaging box provided with a folding curve for changing the overall height is provided.

  Since the packaging box of these patent documents 3 and 4 is not provided with the break line, rigidity does not fall. However, the packaging box of Patent Document 3 can change only the cross-sectional shape of the accommodation space. Moreover, the packaging box of patent document 4 can change only the longitudinal cross-sectional shape of accommodation space. Therefore, there is a problem that versatility is low.

US Pat. No. 3,727,827 Registered Utility Model No. 3120435 JP 2007-204122 A JP 2009-107631 A

  This invention makes it a subject to provide the packaging box which can change the cross-sectional shape and vertical cross-sectional shape of accommodation space, without reducing rigidity.

  In order to solve the above-described problem, the packaging box of the present invention includes a pair of end walls and side walls alternately arranged in a lateral direction via a first folding curve, and at least one end of these end walls and side walls. In a packaging box in which a flap constituting an obstruction lid on the edge is provided continuously in a vertical direction via a second folding curve, the side wall or the end wall from the intersecting position of the first and second folding curves located diagonally A third fold curve extending at an inclination angle of approximately 45 degrees toward the first fold line is provided, and the fourth fold curve extending parallel to the first fold curve so as to intersect the third fold curve is provided at both longitudinal ends. A fifth fold curve extending in parallel to the second fold curve is provided over both side edges in the lateral direction so as to pass over the edge and to pass through the intersection position of the third fold curve and the third fold curve. It is configured.

  This packaging box is of a both-ends closed type in which flaps constituting a closed wall are connected to both ends of each end wall and side wall, and a flap constituting a closed wall is provided on one end edge of each end wall and side wall. Includes one-end opening (tray) type. Further, the both-end closed packaging box includes a structure in which a variable structure composed of a third folding curve to a fifth folding curve is applied to one opening end and that applied to both opening ends.

  The packaging box of this invention can be made into the 1st sealing state which obstruct | occluded the opening end which provided the flap continuously by bending by the 1st and 2nd folding curve. In addition, the flaps are continuously connected by folding along a pair of fourth folding curves, folding along a pair of first folding curves located diagonally, folding along a third folding curve, and folding along a fifth folding curve. It can be set as the 2nd sealing state which obstruct | occluded the opened end. And this 2nd sealing state differs in both the cross-sectional shape and vertical cross-sectional shape of accommodation space compared with a 1st sealing state. And since this packaging box does not need to provide a broken line at all, rigidity does not fall. In addition, since the breaking work of the breaking line is unnecessary, the sealing workability can be improved.

  In this packaging box, it is preferable to provide a break line extending from each crossing position of the first fold curve and the second fold curve to the fifth fold curve along the first fold curve. This packaging box can improve the sealing workability | operativity at the time of a 2nd sealing state by fracture | rupturing a part along a 1st folding line along a fracture line. Moreover, the opening end which provided the flap continuously is obstruct | occluded by breaking a part of 1st fold line along a rupture line, and bend | folding along a 5th fold curve while bending along all the 1st fold lines. The third sealed state can be obtained. And in this 3rd sealing state, the cross-sectional shape of accommodation space is the same and a longitudinal cross-sectional shape differs compared with a 1st sealing state. In addition, since the break line is a short dimension that extends from the second fold curve to the fifth fold curve, the rigidity does not decrease and the workability at the time of the break is also good.

  In this case, the non-use state is preferably a folded state in which the pair of first folding curves located diagonally are folded and the adjacent end walls and side walls are overlapped. In this way, when the break line is broken, since the portion is folded in advance, the workability at the break can be improved.

  In the packaging box of the present invention, by selectively folding the first and fourth folding lines extending in the vertical direction and the second and fifth folding lines extending in the horizontal direction, the cross-sectional shape and vertical cross-sectional shape of the storage space can be obtained. Can be changed. Moreover, a sealing pattern can be further added by providing a break line from the second fold curve to the fifth fold curve along the first fold curve. And since a break line is the short dimension only applied to the 5th fold curve from the 2nd fold curve, it can prevent that rigidity falls and its rupture workability | operativity is also favorable.

It is a top view which shows the blank of the packaging box of 1st Embodiment of this invention. It is a perspective view which shows a 1st sealing state. It is a perspective view which shows one process at the time of setting it as a 1st sealing state. It is a perspective view which shows another 1 process at the time of setting it as a 1st sealing state. It is a perspective view which shows a 2nd sealing state. It is a perspective view which shows one process at the time of setting it as a 2nd sealing state. It is a perspective view which shows another 1 process at the time of setting it as a 2nd sealing state. It is a perspective view which shows another 1 process at the time of setting it as a 2nd sealing state. It is a perspective view which shows 1 process of the modification at the time of setting it as a 2nd sealing state. It is a perspective view which shows a 3rd sealing state. It is a perspective view which shows one process at the time of setting it as a 3rd sealing state. It is a top view which shows the blank of the packaging box of 2nd Embodiment. It is a perspective view which shows a 1st sealing state. It is a perspective view which shows one process at the time of setting it as a 1st sealing state. It is a perspective view which shows a 2nd sealing state. It is a perspective view which shows one process at the time of setting it as a 2nd sealing state. It is a perspective view which shows a 3rd sealing state. It is a perspective view which shows one process at the time of setting it as a 3rd sealing state. It is a perspective view which shows a 4th sealing state. It is a perspective view which shows one process at the time of setting it as a 4th sealing state. It is a perspective view which shows a 5th sealing state. It is a perspective view which shows one process at the time of setting it as a 5th sealing state. It is a perspective view which shows a 6th sealing state. It is a perspective view which shows one process at the time of setting it as the 6th sealing state. It is a perspective view which shows a 7th sealing state. It is a perspective view which shows one process at the time of setting it as the 7th sealing state. It is a perspective view which shows an 8th sealing state. It is a perspective view which shows one process at the time of setting it as an 8th sealing state. It is a perspective view which shows a 9th sealing state. It is a perspective view which shows one process at the time of setting it as the 9th sealing state. It is a perspective view which shows a 10th sealing state. It is a perspective view which shows 1 process at the time of setting it as the 10th sealing state.

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

  1 to 4 show a packaging box according to a first embodiment of the present invention. This packaging box includes a pair of end walls 10A, 10B and side walls 11A, 11B, and has both ends closed type in which flaps 14A, 14B to 17A, 17B constituting the closing lids are connected to the upper and lower ends of the walls, respectively. It is. And the packaging box of this embodiment is shown in FIG. 2A, FIG. 3A, and FIG. 4A by providing the 1st to 6th folding lines 13, 18, 19, 20, 22, 25, and the fracture line 24. In addition, sealing can be performed in three sealing states with different cross-sectional shapes and vertical cross-sectional shapes of the accommodation space.

  In this packaging box, a well-known corrugated paper having corrugated cores disposed between a front liner and a back liner is used as a continuous blank shown in FIG. 1 by a well-known paper punching device (not shown). It is molded by stamping and pasting a predetermined part by gluing.

  As shown in FIG. 1, the packaging box blank is provided so that the end walls 10 </ b> A and 10 </ b> B and the side walls 11 </ b> A and 11 </ b> B are alternately and continuously linearly in the lateral direction. Among these, the margin part 12 for adhering to the end wall 10B located in the right end part is connected to the side edge of the side wall 11A located in the left end part. Further, the boundary part between the side wall 11A and the end wall 10A, the boundary part between the end wall 10A and the side wall 11B, the boundary part between the side wall 11B and the end wall 10B, and the boundary part between the side wall 11A and the adhesive margin 12 are respectively thick. First folding lines 13a to 13d are provided which are formed with a ruled line so as to compress them.

  Upper inner flaps 14A and 14B are provided in the vertical direction at the upper end edges of the end walls 10A and 10B, and upper outer flaps 15A and 15B are provided in the vertical direction at the upper end edges of the side walls 11A and 11B. . Similarly, the lower inner flaps 16A and 16B are connected to the lower end edges of the end walls 10A and 10B in the vertical direction, and the lower outer flaps 17A and 17B are connected to the lower end edges of the side walls 11A and 11B in the vertical direction. It is connected continuously. And the boundary part of each upper flap 14A, 14B, 15A, 15B and end wall 10A, 10B and side wall 11A, 11B, and each lower flap 16A, 16B, 17A, 17B and end wall 10A, 10B and side wall 11A, Similarly to the above, second folding lines 18a and 18b are provided at the boundary portion of 11B.

  The blank of the packaging box is punched so that the center of the corrugated cardboard extends in the vertical direction from the upper flaps 14A, 14B, 15A, 15B to the lower flaps 16A, 16B, 17A, 17B.

  And the packaging box of this embodiment is inclined 45 degrees toward the side walls 11A, 11B from the intersection of the first folding lines 13a, 13c and the upper second folding line 18a located diagonally in the assembled state. Third folding curves 19, 19 are provided that extend downward at an angle. The dimension of the third folding curve 19 is set according to the variable dimension of the lateral width and the total height.

  In addition, on the side walls 11A, 11B that form the third folding line 19 and the continuous outer flaps 15A, 15B, 17A, 17B, there are fourth folding lines 20, 20 extending in parallel to the first folding lines 13a, 13c. Is provided. The fourth folding line 20 is provided at a position passing through the tip so as to intersect the third folding line 19. Further, the fourth folding line 20 is provided so as to extend in the vertical direction over both end edges of the upper and lower outer flaps 15A, 15B, 17A, 17B. Further, the fourth folding line 20 is configured by a lead ruler having a cut portion at a predetermined interval in the portions located in the outer flaps 15A, 15B, 17A, and 17B, thereby improving the bendability. The side walls 11A and 11B are side walls 11A and 11B when the thin ink region between the first folding lines 13a and 13c and the fourth folding lines 20 and 20 is bent along the first folding lines 13a and 13c. Thus, the first variable portion 21 becomes the end walls 10A and 10B when bent along the fourth folding lines 20 and 20.

  The end walls 10A and 10B, the side walls 11A and 11B, and the adhesive margin 12 that are continuous in the lateral direction are provided with a fifth folding line 22 that extends in parallel to the second folding line 18a. The fifth folding curve 22 is provided at a position passing through the tip of the third folding curve 19, which is the intersection position of the third and fourth folding curves 19 and 20. In addition, the fifth folding line 22 is provided so as to extend in the lateral direction over the both sides of the adhesive margin 12 and the end wall 10B. Note that the end walls 10A and 10B and the side walls 11A and 11B have the end walls 10A and 10B when the thin ink region between the second fold line 18a and the fifth fold line 22 is bent along the second fold line 18a. 10B and side walls 11A and 11B, and the second variable portion 23 which becomes the upper flaps 14A, 14B, 15A and 15B when bent along the fifth folding line 22.

  Each of the first folding lines 13a to 13d is provided with a breaking line 24 extending from the position intersecting the second folding line 18a to the fifth folding line 22. The break line 24 of this embodiment consists of a perforated cut line in which a plurality of cut portions are formed at a predetermined interval. However, the break line 24 may be constituted by, for example, a half cut line that cuts the back liner while not cutting the front liner.

  In addition, the lower outer flaps 17A and 17B that are continuous with the side walls 11A and 11B that form the third folding line 19 are connected to the first folding line 13a and the fourth folding line 20 from the intersection of the second folding line 18b and the fourth folding line 20, respectively. A sixth folding line 25 extending outward at an inclination angle of 45 degrees is provided over the side edges of the lower outer flaps 17A and 17B where the extension line 13c is located.

  The outer flaps 15A, 15B, 17A, and 17B are provided with a notch 26 having a substantially V shape at the edge where the end of the fourth folding line 20 is located.

  The packaging box is bent along the first folding line 13a so that the side wall 11A overlaps the end wall 10A, and is folded along the first folding line 13c so that the end wall 10B overlaps the side wall 11B. That is, it is bent along a pair of first fold curves 13a and 13c located diagonally so as not to include the first fold curve 13d that defines the adhesive margin 12. And the margin part 12 located in the lower side and the end wall 10B located in the upper side are glued with adhesives, such as a vinyl acetate emulsion type | system | group. And it is delivered to a predetermined dealer in this folded state.

  According to the size and quantity of the goods to be accommodated, the seller who uses the folded packaging box has the first sealed state shown in FIG. 2A, the second sealed state shown in FIG. 3A, and the first sealed state shown in FIG. 4A. Assemble and seal the packaging box so that it is in a three-sealed state. In the following description, the sealing operation is described on the upper flaps 14A, 14B, 15A, 15B side, but the same applies to the lower flaps 16A, 16B, 17A, 17B. However, in the drawing, the lower flaps 16A, 16B, 17A, and 17B are illustrated in a state of being already bent.

  When sealing the packaging box in the first sealing state, as shown in FIG. 2B, the end walls 10A, 10B, the side walls 11A, 11B, and the margin part 12 are bent along the first folding lines 13a to 13d. Widen to form a rectangular shape. Next, as shown in FIG. 2C, after the upper inner flaps 14A and 14B are bent inward along the second folding line 18a, the upper outer flap 15A along the second folding line 18a as shown in FIG. 2A. , 15B is folded inward. Thereafter, the tips of the upper outer flaps 15A and 15B that are in contact with each other are attached with an adhesive tape or the like.

  When sealing the packaging box in the second sealed state, as shown in FIG. 3B, the end wall 10 </ b> A, the side wall 11 </ b> B, and the adhesive margin are formed along the first folding lines 13 b and 13 d that do not form the breaking line 24. 12, the end wall 10 </ b> B and the side wall 11 </ b> A adjacent to each other are bent. In addition, the end wall 10A and the side wall 11A and the end wall 10B and the side wall 11B are bent along the fourth fold lines 20 and 20, and the first fold lines 13a and 13c are flatly extended without being bent.

  Next, as shown in FIG. 3C, the end walls 10A and 10B are partially broken along the breaking line 24, and the upper inner flaps 14A and 14B are cut along the fifth folding line 22 with respect to the end walls 10A and 10B. Then, as shown in FIG. 3D, the upper outer flaps 15A and 15B are bent inward along the fifth folding line 22 with respect to the side walls 11A and 11B. At this time, in these upper outer flaps 15 </ b> A and 15 </ b> B, side portions that are continuous with the end walls 10 </ b> A and 10 </ b> B are folded at the third folding curve 19 and at the same time the second folding curve 20. The upper outer flaps 15A and 15B are superimposed on the inner surface side. Moreover, since the upper outer flaps 15A and 15B facing each other include a part of the side walls 11A and 11B, the vertical dimension thereof increases, and the tips of each other do not abut each other. Therefore, as shown in FIG. 3A, the other upper outer flap 15A is superimposed on the upper side of the one upper outer flap 15B, and the tip thereof is adhered with an adhesive tape or the like.

  In addition, when sealing a packaging box in this 2nd sealing state, it is not necessary to fracture | rupture part of end wall 10A, 10B along the fracture | rupture line 24. FIG. In this case, as shown in FIG. 3E, the upper outer flaps 15A and 15B are bent along the fifth folding curve 22 while the upper inner flaps 14A and 14B are bent inward, and one of the upper outer flaps 15A and 15B is folded. The part is bent inward along the third folding line 19. Thereby, it can be set as the 2nd sealing state shown to FIG. 3A similarly to FIG. 3D. Further, the lower outer flaps 17A and 17B are folded and overlapped by the sixth folding line 25 so that a part thereof is located on the inner side, similarly to the upper outer flaps 15A and 15B.

  When the packaging box is sealed in the third sealed state, a part of each of the first folding lines 13a to 13d is broken along the breaking line 24 as shown in FIG. 4B. Then, after bending the upper inner flaps 14A and 14B inwardly with respect to the end walls 10A and 10B along the fifth folding curve 22, as shown in FIG. 4A, the upper outer flap 15A with respect to the side walls 11A and 11B. , 15B is folded inward. Then, the other upper outer flap 15A is superposed on the upper side of the one upper outer flap 15B, and the tip thereof is adhered with an adhesive tape or the like.

  Thus, the packaging box of 1st Embodiment obstruct | occluded the opening end which provided flap 14A, 14B-17A, 17B continuously by bend | folding with the 1st folding curves 13a-13d and the 2nd folding curves 18a, 18b. It can be set as the 1st sealing state. In addition, it is bent along a pair of fourth fold curves 20, 20, bent along a pair of first fold curves 13 b, 13 d located diagonally, and further bent along a third fold curve 19 and along a fifth fold curve 22. By bending, it can be set as the 2nd sealing state which obstruct | occluded the opening end which provided flap 14A, 14B-17A, 17B continuously. Furthermore, by breaking a part along the first folding lines 13a to 13d along the breaking line 24, and bending along the first folding lines 13a to 13d and folding along the fifth folding line 22, It can be set as the 3rd sealing state which obstruct | occluded the opening end which provided flap 14A, 14B-17A, 17B continuously.

  Compared with the first sealed state, the second sealed state is different in both the cross-sectional shape and the vertical cross-sectional shape of the storage space, and the third sealed state has the same cross-sectional shape of the storage space and the vertical cross-sectional shape. Different. That is, three sealed states can be realized with one cardboard box. Moreover, in the present embodiment, by breaking a part of the first folding lines 13a to 13d along the breaking line 24, the sealing workability in the second sealing state can be improved, and the third sealing state is added. it can. And since the fracture | rupture line 24 is a short dimension only applied to the 5th fold line 22 from the 2nd fold line 18a, rigidity does not fall. Further, the first folding lines 13a and 13c provided with the breaking line 24 are in a state of being folded in advance when not in use, and the other first folding lines 13b and 13d are always bent, The breaking workability of the line 24 is good.

  Moreover, in this 1st Embodiment, even if it is a structure which does not provide the fracture | rupture line 24, two types, a 1st sealing state and a 2nd sealing state, are realizable. And when comprised in this way, since the fracture | rupture line 24 is not provided at all, the fall of rigidity can be prevented reliably. In addition, the sealing workability can be improved because the breaking work of the breaking line 24 is not required during the sealing work.

  FIG. 5 thru | or FIG. 15 shows the packaging box of 2nd Embodiment. In the second embodiment, symmetrical third fold curves 19a to 19d, fourth fold curves 20a to 20d, and sixth fold curves 25a to 25d are provided on both sides of the first fold curves 13a to 13d. It differs from 1st Embodiment by the point which further provided the 7th folding lines 27a-27d symmetrical with the 6th folding lines 25a-25d in the upper part of 18a.

  Specifically, on the right side of the side walls 11A, 11B including the outer flaps 15A, 15B, 17A, 17B, the third folding line 19a, the fourth folding line 20a, and the sixth folding line 25a are provided as in the first embodiment. Is provided, and a seventh fold line 27a is provided symmetrically with the sixth fold line 25a. A third folding line 19b, a fourth folding line 20b, a sixth folding line 25b, and a seventh folding line 27b are provided on the left side of the side walls 11A, 11B including the outer flaps 15A, 15B, 17A, 17B. . Further, on the left side of the end walls 10A, 10B including the inner flaps 14A, 14B, 16A, 16B, there are provided a third folding curve 19c, a fourth folding curve 20c, a sixth folding curve 25c, and a seventh folding curve 27c. Yes. Furthermore, a third fold curve 19d, a fourth fold curve 20d, a sixth fold curve 25d, and a seventh fold curve 27d are provided on the right side of the end walls 10A, 10B including the inner flaps 14A, 14B, 16A, 16B. ing. And in this 2nd Embodiment, the 10 types of sealing states shown to FIG. 6A-FIG. 15A are realizable. In addition, each flap 14A, 14B-17A, 17B is formed in the dimension which the front-end | tip of outer flap 15A, 15B, 17A, 17B abuts in the state which the width of end wall 10A, 10B became the largest.

  In the first sealed state shown in FIG. 6A, the end walls 10A and 10B and the side walls 11A and 11B are bent along the first folding lines 13a to 13d as shown in FIG. 6B. Further, it is performed by folding the flaps 14A, 14B to 17A, 17B along the second folding curves 18a, 18b.

  In the second sealed state shown in FIG. 7A, as shown in FIG. 7B, a part of the first folding lines 13a to 13d is broken along the breaking line 24, and the end walls 10A, 10A, 10B and the side walls 11A and 11B are bent. Further, the folding is performed by folding the flaps 14A, 14B to 17A, 17B along the fifth folding line 22 and the second folding line 18b.

  In the third sealed state shown in FIG. 8A, as shown in FIG. 8B, the end walls 10A, 10B and the side walls 11A along the fourth folding lines 20a and the first folding lines 13b, 13d located on the right side of the side walls 11A, 11B. , 11B is bent. Further, the folding is performed by folding the flaps 14A, 14B to 17A, 17B along the second folding curves 18a, 18b, the seventh folding curve 27a, and the sixth folding curve 25a. The third sealed state can be sealed in the same manner even when folded along the fourth folding line 20c and the first folding lines 13a, 13c located on the left side of the end walls 10A, 10B.

  In the fourth sealed state shown in FIG. 9A, as shown in FIG. 9B, a part of the first folding lines 13a to 13d is broken by the breaking line 24, and the fourth folding line 20a located on the right side of the side walls 11A and 11B and The end walls 10A and 10B and the side walls 11A and 11B are bent along the first folding lines 13b and 13d. Further, the folding is performed by folding the flaps 14A, 14B to 17A, 17B along the fifth folding curve 22, the third folding curve 19a, the second folding curve 18b, and the sixth folding curve 25a. Note that this fourth sealed state can be similarly sealed even when folded along the fourth folding line 20c and the first folding lines 13a, 13c located on the left side of the end walls 10A, 10B.

  In the fifth sealed state shown in FIG. 10A, as shown in FIG. 10B, the end walls 10A, 10B and the side walls 11A, 11B are bent along the fourth folding lines 20a, 20b located on both sides of the side walls 11A, 11B. Further, the folding is performed by folding the flaps 14A, 14B to 17A, 17B along the second folding curves 18a, 18b, the seventh folding curves 27a, 27b and the sixth folding curves 25a, 25b.

  In the sixth sealed state shown in FIG. 11A, as shown in FIG. 11B, a part of the first folding lines 13a to 13d is broken by the breaking line 24, and the fourth folding lines 20a, The end walls 10A and 10B and the side walls 11A and 11B are bent along 20b. Further, the folding is performed by folding the flaps 14A, 14B to 17A, 17B along the fifth folding curve 22, the third folding curves 19a, 19b, the second folding curve 18b, and the sixth folding curves 25a, 25b.

  In the seventh sealed state shown in FIG. 12A, as shown in FIG. 12B, the end walls 10A, 10B and the side walls along the fourth folding line 20c and the first folding lines 13b, 13d located on the left side of the end walls 10A, 10B. Bend 11A and 11B. Further, the folding is performed by folding the flaps 14A, 14B to 17A, 17B along the second folding curves 18a, 18b, the seventh folding curve 27c, and the sixth folding curve 25c. The seventh sealed state can be similarly sealed even when folded along the fourth folding line 20d and the first folding lines 13a, 13c located on the right side of the end walls 10A, 10B.

  In the eighth sealed state shown in FIG. 13A, as shown in FIG. 13B, a part of the first folding lines 13a to 13d is broken by the breaking line 24, and the fourth folding line 20c located on the left side of the end walls 10A and 10B. The end walls 10A and 10B and the side walls 11A and 11B are bent along the first folding lines 13b and 13d. Further, the folding is performed by folding the flaps 14A, 14B to 17A, 17B along the fifth folding curve 22, the third folding curve 19c, the second folding curve 18b, and the sixth folding curve 25c. The seventh sealed state can be similarly sealed even when folded along the fourth folding line 20d and the first folding lines 13a, 13c located on the right side of the end walls 10A, 10B.

  In the ninth sealed state shown in FIG. 14A, as shown in FIG. 14B, the end walls 10A, 10B and the side walls 11A, 11B are bent along the fourth folding lines 20c, 20d located on both sides of the end walls 10A, 10B. Further, the folding is performed by folding the flaps 14A, 14B to 17A, 17B along the second folding curves 18a, 18b, the seventh folding curves 27c, 27d and the sixth folding curves 25c, 25d.

  In the tenth sealed state shown in FIG. 15A, as shown in FIG. 15B, a part of the first folding lines 13a to 13d is broken by the breaking line 24, and the fourth folding line 20c located on both sides of the end walls 10A and 10B. , 20d and the end walls 10A, 10B and the side walls 11A, 11B are bent. Further, the folding is performed by folding the flaps 14A, 14B to 17A, 17B along the fifth folding curve 22, the third folding curves 19c, 19d, the second folding curve 18b, and the sixth folding curves 25c, 25d.

  Thus, by providing the third fold curves 19a to 19d, the fourth fold curves 20a to 20d, and the sixth fold curves 25a to 25d for the first fold curves 13a to 13d, the sealing pattern can be greatly increased. . In addition, the sealing pattern can be further increased by providing the seventh folding curves 27a to 27d symmetrical to the sixth folding curves 25a to 25d. And each sealed state can change according to the magnitude | size and quantity of the goods accommodated, since the cross-sectional shape and vertical cross-sectional shape of accommodation space differ, respectively.

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

  For example, the third folding curve 19 and the fifth folding curve 22 are provided only for the second folding curve 18a positioned on the upper side, but for the second folding curve 18b positioned on the lower side so as to be positioned symmetrically. However, it may be configured to be provided. Moreover, the 3rd folding line 19 and the 5th folding line 22 may be provided in multiple stages up and down.

  Furthermore, in the said embodiment, it breaks with the 1st-6th folding lines 13, 18, 19, 20, 22, 25 in the packaging box of the both ends obstruction type which connected flaps 14A, 14B-17A, and 17B up and down. Although the line 24 is provided, the present invention is not limited to this. For example, the upper flaps 14A, 14B, 15A, and 15B at the upper end can be similarly applied to a tray-type packaging box having one end opening that is not provided continuously. In this case, the first to fifth folding lines 13, 18, 19, 20, 22 and the breaking line 24 are provided on the lower flaps 16A, 16B, 17A, 17B side. Further, the sixth folding line 25 provided on the opposite side is not formed. Then, the upper end opening is closed with a separate upper lid or a shrink film. Further, when the upper lid is closed, the upper lid may be provided with the same variable structure as described above.

10A, 10B ... end walls 11A, 11B ... side walls 12 ... glue margins 13a to 13d ... first folding lines 14A, 14B ... upper inner flaps 15A, 15B ... upper outer flaps 16A, 16B ... lower inner flaps 17A, 17B ... Lower outer flaps 18a, 18b ... second folding curve 19, 19a-19d ... third folding curve 20, 20a-20d ... fourth folding curve 21 ... first variable section 22 ... fifth folding curve 23 ... second variable section 24 ... Break line 25, 25a-25d ... 6th fold curve 26 ... Notch 27a-27d ... 7th fold curve

Claims (3)

The pair of end walls and side walls are alternately arranged in a lateral direction via a first folding line, and a flap constituting a closing lid on at least one edge of the end wall and the side wall forms a second folding line. In the packaging box arranged in the vertical direction through
Providing a third folding curve extending at an inclination angle of approximately 45 degrees from the intersection of the first and second folding curves located diagonally toward the side wall or end wall;
A fourth fold line extending in parallel to the first fold line is provided over both longitudinal edges so as to intersect the third fold line,
A fifth fold curve extending parallel to the second fold curve is provided on both lateral edges so as to pass through the intersection position of the third fold curve and the third fold curve. Packaging box.   2. The packaging box according to claim 1, wherein a break line extending from each crossing position of the first fold curve and the second fold curve to the fifth fold curve along the first fold curve is provided.   3. The packaging box according to claim 2, wherein in a non-use state, the pair of first folding curves located diagonally are folded and the adjacent end walls and side walls are overlapped with each other. .