JP2009067449A - Packaging box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging box the sealing of which is easy without reducing rigidity. <P>SOLUTION: A folding line 19 for the total height adjustment is installed on end walls 10A and 10B, and side walls 11A and 11B. A folding line 20 for folding in which extends at a tilting angle of approximately 45° is installed from both ends of the folding line 19 for the total height adjustment of respective end walls 10A and 10B. At the same time, a breaking-off section 21 is installed to the distal ends of first flaps 14A and 14B from the intersection between the folding line 20 for folding in and a border line (second folding line 18). Thus, this packaging box is constituted to be switchable between a first sealed state and a second sealed state. In this case, under the first sealed state, respective flaps 14A, 14B, 15A and 15B are folded along the border lines with respective walls 10A, 10B, 11A and 11B. Under the second sealed state, the first flaps 14A and 14B are broken along the breaking-off section 21, and at the same time, the first flaps 14A and 14B, and certain parts of the end walls 10A and 10B are folded along the folding line 19 for the total height adjustment and the folding line 20 for folding in, and the total height is lower than the first sealed state wherein the packaging box is closed by the second flaps 15A and 15B. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a packaging box that can store commodities of different sizes without generating useless space.

  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 is different in size, a plurality of types (volumes) of packaging boxes are required. The preparation of a plurality of types of packaging boxes is problematic in that the cost is high and the 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, there is a demand for a packaging box that can change the volume that can be accommodated, and the following information is available as prior art document information related to such a packaging box.

Japanese Utility Model Publication No. 56-109916 JP 2007-197047 A

  Patent Document 1 describes a packaging box in which side plates are connected to each edge of a rectangular bottom wall and a top plate that forms a lid is connected to each side plate. Each side plate of the packaging box is provided with an attachment piece for adhering to one side plate adjacent thereto. In addition, a plurality of folding lines extending in the horizontal direction are provided at predetermined intervals in the vertical direction, and a cut line is provided from the upper end to the lower folding line at the boundary portion between the side plate and the mounting piece.

  And in the packaging box of this patent document 1, the folding curve which folds the top plate which comprises a cover according to the height of the goods accommodated inside is determined. And a side plate and an attachment piece are cut | disconnected by a cutting line from the upper end of a side plate to the folding line. Thereby, it is possible to bend and cover the side plate at a desired height by changing the so-called flap projecting dimension.

  Further, Patent Document 2 describes a packaging box that includes a pair of end walls and side walls, and that upper and lower end edges are provided with flaps that form a lid. Each end wall and side wall of the packaging box is provided with a linearly continuous folding line. Each end wall is provided with a folding curve for folding extending toward the center at an inclination angle of about 45 degrees from the intersection of the boundary line between the adjacent side wall and the folding curve.

  And in the packaging box of this patent document 2, according to the height of the goods accommodated inside, when sealing in the state where the total height is low, these end walls and the end walls along the folding lines provided on the end walls and the side walls The side wall is bent, and a part of the end wall is folded along the folding folding curve so that both side portions are folded in a triangular shape and overlapped, and then folded inward and sealed.

  However, in the packaging box described in Patent Document 1, since the cut line is provided at the ridge portion of the side plate, which is most important for ensuring the rigidity of the packaging box, the rigidity is lowered when the overall height is sealed. Is inevitable. On the other hand, the packaging box described in Patent Document 2 does not have such a cut line, so that there is no problem of rigidity reduction. However, both sides of the end wall are superimposed in a triangular shape, and the bent portion of the side wall is further superimposed on the upper side, so the repulsive force due to the waist of the corrugated cardboard constituting the packaging box is strong, and the sealed state In order to maintain this, it is necessary to apply strong adhesion.

  An object of the present invention is to provide a packaging box that can be easily sealed without lowering rigidity.

  In order to solve the above problems, a packaging box according to the present invention is provided with a pair of end walls and side walls, and a first flap is connected to the end wall and a second flap is connected to the side wall. In the laterally continuous end wall and the side wall, a laterally extending total height adjustment folding curve is provided, and approximately 45 degrees from both ends of the total height adjusting folding curve of each end wall toward the continuous first flap. A folding line extending at an inclination angle of the folding line, and a break portion extending from the intersection of the folding curve and the boundary between the end wall and the first flap toward the tip of the first flap, A first sealed state folded along the boundary line between each flap and each wall, and the first flap is broken along the broken portion, and is folded along the total height adjustment folding curve and the folding folding curve. The first flap and Folding a portion of the wall, the total height is a configurable and lower second seal condition than the first closure state of closing the second flap.

  In this packaging box, the total height can be made different between the first sealed state folded at the boundary line between each wall and the flap, and the second sealed state folded at the total height adjustment folding curve and the folding curve. . And in a 1st sealing state, since the fracture | rupture part is not provided at the boundary part of an adjacent end wall and a side wall, it can prevent that rigidity falls. On the other hand, in the second sealed state, since a broken portion extending from the intersection of the folding curve for folding and the boundary between the end wall and the first flap toward the tip of the first flap is provided, a part of the end wall is bent. The repulsive force when superposed can be reduced. Therefore, it can seal easily, without giving firm fixation.

  Further, in a normal packaging box, a general sealing state is that a long second flap continuously provided on the side wall is located on the outer side. Even if the formation position is changed, it can be reliably closed. That is, when only adjusting the overall height in the second sealed state, the position of the folding height curve is changed, and accordingly, the formation position of the breaking portion extending from the end of the folding curve is changed. It is not necessary to change the entire outline of the blank. Therefore, the degree of freedom related to dimensional adjustment can be improved.

  In the second sealed state, the packaging box is surrounded by the boundary line between the end wall and the side wall, the folding curve for the folding, and the fracture portion, and is superimposed on the end wall folded along the overall height adjustment folding curve. It is preferable that the tip of the second flap is inserted between the overlapping portion and the side wall bent along the overall height adjustment folding curve. In this way, the second sealed state can be maintained without using the fixing means. Moreover, since the repulsive force in a 2nd sealing state can further be reduced, the sealing state in the state using the adhering means can be maintained reliably.

  In the packaging box of this invention, since the fracture | rupture part is not provided at the boundary part of an adjacent end wall and a side wall, it can prevent that the rigidity in a 1st sealing state with a high total height falls. Moreover, since the fracture | rupture part extended toward the front-end | tip of a 1st flap is provided from the intersection of the folding line for folding, an end wall, and the boundary line of a 1st flap, the 2nd sealing which bends and overlaps a part of end wall The repulsive force in the state can be reduced, and sealing can be easily performed without giving a strong fixation.

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

  1 to 5 show a packaging box according to a first embodiment of the present invention. This packaging box is provided with a pair of end walls 10A, 10B and side walls 11A, 11B, and flaps 14A, 14B-17A, 17B are connected to the upper and lower edges of these, respectively, and these flaps 14A, 14B-17A, 17B. Sealing is made possible in two types: a first sealed state closed by the second sealed state, and a second sealed state whose overall height is lower than the first sealed state.

  This packaging box is formed by punching a well-known corrugated cardboard sheet having a corrugated core between the front and back sheets as a single continuous blank shown in FIG. 6 by a well-known paper container punching device (not shown). The predetermined part is pasted and formed by gluing.

  As shown in FIG. 6, 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 linearly continuous. 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. A first folding line 13 is provided at each of the boundary portions of the end walls 10A and 10B, the side walls 11A and 11B, and the adhesive margin 12 so as to have a ruled line so as to compress the thickness.

  Upper inner flaps 14A and 14B, which are first flaps, are connected to upper end edges of the end walls 10A and 10B, and upper outer flaps 15A which are second flaps are connected to upper end edges of the side walls 11A and 11B. , 15B are continuously provided. Similarly, lower inner flaps 16A and 16B are connected to lower end edges of the end walls 10A and 10B, and lower outer flaps 17A and 17B are connected to lower end edges of the side walls 11A and 11B. Has been. A second folding line 18 similar to the above is provided between the flaps 14A, 14B to 17A, 17B and the continuous walls 10A, 10B, 11A, 11B.

  In the present embodiment, the total height adjustment folding line 19 extending in the horizontal direction is provided on the end walls 10A and 10B and the side walls 11A and 11B that are continuous in the horizontal direction. The total height adjusting folding line 19 is formed by ruled lines so as to compress the wall thickness in the same manner as described above.

  Further, the end walls 10A and 10B have both ends of the total height adjustment folding curve 19, that is, the first folding curve 13 which is a boundary line between the total height adjustment folding curve 19 and the side walls 11A and 11B adjacent in the assembled state. A folding fold line 20 is provided that extends at an inclination angle of 45 degrees toward the center of one of the continuous upper inner flaps 14A and 14B from the intersection with the upper side. The folding line 20 for folding is composed of a folding line formed with a ruled line so as to compress the thickness, and a lead ruled line in which cutting lines are provided at predetermined intervals on the folding line. In addition, this folding line 20 for folding is also provided in the glue margin part 12 stuck on the inner surface of the end wall 10B in an assembled state.

  Further, the upper inner flaps 14A and 14B that are continuous with the end walls 10A and 10B are provided at the tips of the upper inner flaps 14A and 14B from the intersection of the second folding line 18 and the folding curve 20 that are the boundary lines. A breaking portion 21 extending in the orthogonal direction is provided. The broken portion 21 has a perforated shape provided at a predetermined interval so that a plurality of cutting lines are positioned on a straight line.

  In this embodiment, the upper inner flaps 14A and 14B are provided with punched portions 22 on both sides. This punching portion 22 has inclined edges 22a extending at an inclination angle of 45 degrees from the intersections of the first folding curve 13 and the second folding curve 18 to the fracture portion 21 at both side ends of the upper inner flaps 14A and 14B. A side edge 22b is formed so as to extend from the upper end of the inclined edge 22a to the tip edge of the upper inner flaps 14A, 14B so as to be positioned on the extension line of the fracture portion 21.

  Moreover, the blank of the packaging box configured as described above has a substantially rhombus shape by the second folding line 18, the folding line 20 for folding, the breaking part 21, and the punching part 22, and the upper inner side from the end walls 10 </ b> A and 10 </ b> B. An overlapping portion 23 is formed extending over the flaps 14A and 14B.

  When setting the dimensions of the packaging box having the above-described configuration, first, the horizontal dimensions of the end walls 10A, 10B and the side walls 11A, 11B are set based on the required planar shape (area) and height, and Sets the direction dimension. Thereafter, based on the second required height (volume), a position (height) for forming the total height adjustment folding curve 19 is set. The projecting dimensions of the outer flaps 15A, 15B, 17A, and 17B are set to approximately half the lateral dimension of the end walls 10A and 10B, and the inner flaps 14A, 14B, 16A, and 16B are the outer flaps 15A and 15B. , 17A and 17B are configured to protrude with the same dimensions.

  The blank of the packaging box set in this way has the same projecting dimensions of the flaps 14A, 14B to 17A, 17B, and the second folding curve 18 and the total height adjustment folding curve 19 that are continuous in the lateral direction are linear. Since it extends, it can be manufactured by flexogluer which is a general-purpose processing machine. In this case, the folding line 20, the breaking part 21, and the punching part 22 are formed by a removable partial mold.

  Next, the usage method of the said packaging box is demonstrated.

  First, after the side wall 11A is folded and overlapped with respect to the end wall 10A, the blank of the packaging box is bent with respect to the side wall 11B, and the end portion of the end wall 10B and the adhesive margin portion 12 are overlapped. Is delivered in a state of being glued with an adhesive such as a vinyl acetate emulsion.

  When the product is stored in this packaging box and sealed, first, as shown in FIG. 1, the end walls 10A and 10B and the side walls 11A and 11B are spread so as to form a square cylinder, and the lower inner flaps 16A and 16B are spread. After the folding, the lower outer flaps 17A and 17B are folded. And the front-end | tip part of lower outer flap 17A, 17B which faced is fixed by fixing means, such as an adhesive tape (not shown).

  And when it is set as the 1st sealing state with a high total height, as shown in FIG. 2, after bending upper inner flap 14A, 14B along the 2nd folding curve 18, upper outer flap 15A, 15B is similarly 2nd Bend along the fold line 18. Thereafter, the tip portions of the upper outer flaps 15A and 15B that are abutted are fixed by a fixing means such as an adhesive tape. Thereby, it can be set as the 1st sealing state shown in FIG.

  On the other hand, when the second sealed state having a low overall height is used, the upper inner flaps 14A and 14B are partially broken along the broken portion 21 as shown in FIG. Then, the end walls 10A and 10B and the side walls 11A and 11B are bent along the folding height curve 19 for height adjustment, and the upper sides of the end walls 10A and 10B are partially bent along the folding curve 20 for folding. As a result, the upper regions of the end walls 10A and 10B including the upper inner flaps 14A and 14B constituting the overlapping portion 23 are folded inward, and in conjunction with the upper regions of the side walls 11A and 11B including the upper outer flaps 15A and 15B. The area falls inward. Further, the overlapping portion 23 separated from the upper inner flaps 14A and 14B due to the breakage of the breaking portion 21 is bent along the folding curve 20 with respect to the end walls 10A and 10B, and the end walls 10A and 10B The flaps 14A and 14B are overlapped in a state of being sandwiched between the side walls 11A and 11B and the upper outer flaps 15A and 15B.

  When this folding operation is advanced, the pair of upper outer flaps 15A and 15B interfere with each other. Therefore, in this embodiment, as shown in FIG. 5, after one of the upper outer flaps 15A and 15B (15B in the figure) is superimposed on the upper inner flaps 14A and 14B, the other (15A in the figure) is placed on the upper side. Bend to overlap. Thereafter, the tips of the upper outer flaps 15A and 15B superposed on the upper side and the upper outer flaps 15B and 15A positioned on the lower side are fixed by a fixing means such as an adhesive tape. Thereby, it can be set as the 2nd sealing state which obstruct | occluded the surface with upper outer flap 15A, 15B.

  Thus, in the packaging box of this embodiment, the first sealed state folded at the second folding line 18 that is the boundary line between the walls 10A, 10B, 11A, 11B and the flaps 14A, 14B, 15A, 15B; The total height (volume) can be made different between the second sealed state bent by the total height adjustment folding curve 19 and the folding curve 20. Therefore, the type of packaging box to be prepared and the amount of cushioning material can be reduced, and the cost can be reduced.

  And in the 1st sealing state, since the fracture | rupture part 21 is not provided at all in the boundary part of adjacent end wall 10A, 10B and side wall 11A, 11B, it can prevent that rigidity falls. On the other hand, in the second sealed state, from the intersection of the folding line 20 for folding and the second folding line 18 that is the boundary line between the end walls 10A, 10B and the upper inner flaps 14A, 14B, toward the tips of the upper inner flaps 14A, 14B. Therefore, the repulsive force when a part of the end walls 10A and 10B is bent and overlapped can be reduced. Therefore, it can seal easily, without giving firm fixation, and the sealed state can be maintained reliably.

  In each sealed state, the upper outer flaps 15A and 15B are located outside, so that even if the formation position of the total height adjustment folding curve 19 is changed, it can be reliably closed. That is, when adjusting only the overall height in the second sealed state, the position of the folding height curve 19 for changing the overall height is changed, and the formation position of the breaking portion 21 extending from the end of the folding curve 20 is changed accordingly. It is not necessary to change the entire outline of the blank. Therefore, the degree of freedom related to dimensional adjustment can be improved. In addition, when changing the design of a dimension, it can respond easily only by changing only the partial type of flexogluer.

  Further, in the present embodiment, since the punched portions 22 are provided on both sides of the upper inner flaps 14A and 14B, in the second sealed state, as shown in FIG. 5, the overlapping portion broken from the upper inner flaps 14A and 14B. The edge of 23 is completely covered under the upper outer flaps 15A and 15B. Therefore, the appearance in the sealed state can be improved, and workability when the side edges of the upper outer flaps 15A and 15B are fixed with the adhesive tape can be improved.

  7 to 12 show the packaging box of the second embodiment. In the second embodiment, as compared with the first embodiment, the formation position of the folding curve 19 for height adjustment is further separated from the second folding curve 18, and a fixing means such as an adhesive tape is used in the second sealed state. The sealing state can be easily maintained without any problem, and the repulsive force can be further reduced.

  Specifically, as shown in FIGS. 7 and 12, the blank of the packaging box of the second embodiment includes a pair of end walls 10A and 10B and side walls 11A and 11B, and the side wall 11A located at the left end. The side margin is continuously provided with an adhesive margin 12 for adhering to the end wall 10B located at the right end. Flaps 14A, 14B to 17A, 17B are connected to upper and lower edges of the end walls 10A, 10B and the side walls 11A, 11B, respectively.

  Further, the end wall 10A, 10B and the side walls 11A, 11B which are continuous in the lateral direction are provided with a total height adjustment folding line 19 extending in the lateral direction. This total height adjustment fold curve 19 is formed with a ruled line so as to compress the wall thickness. With respect to the second fold curve 18 which is a boundary line with the continuous upper flaps 14A, 14B, 15A, 15B. And provided at a position having a predetermined interval S1. This interval S1 is a dimension in which the tips of the upper outer flaps 15A and 15B enter between the overlapping portion 23 and the bent side walls 11A and 11B in the second sealed state bent along the total height adjustment folding curve 19. Is formed.

  In the present embodiment, as in the first embodiment, the projecting dimensions of the outer flaps 15A, 15B, 17A, and 17B are set to approximately half the lateral dimensions of the end walls 10A and 10B, and the inner flaps 14A and 14B are set. , 16A, 16B are configured to protrude with the same dimensions as the outer flaps 15A, 15B, 17A, 17B. Therefore, the dimension S1 up to the position where the folding curve 19 for height adjustment is formed is configured to be larger than 1/4 of the lateral dimension S2 of the end walls 10A and 10B and smaller than 1/2 of S2 (1 / 2S2> S1> 1 / 4S2). Thus, when the end walls 10A, 10B and the side walls 11A, 11B are bent along the total height adjustment folding curve 19, the tips of the upper outer flaps 15A, 15B are opposed to the upper outer flaps 15B, 15A and the side walls 11B, It is configured to extend to a position beyond the second folding line 18 that is a boundary line with 11A.

  The end walls 10A and 10B are provided with folding folding curves 20 extending at an inclination angle of 45 degrees toward the center of the upper inner flaps 14A and 14B continuous from both ends of the total height adjustment folding curve 19. Similarly, a folding line 20 for folding is also provided in the adhesive margin 12 that is adhered to the inner surface of the end wall 10B in the assembled state. In this embodiment, the folding curve 20 for folding is constituted by a normal folding curve formed by ruled lines so as to compress the wall thickness, and by providing no cutting line constituting the lead ruled line, the end wall 10A , 10B, and the rigidity in the first sealed state can be further secured.

  Further, the upper inner flaps 14A and 14B are orthogonal to the front ends of the upper inner flaps 14A and 14B from the intersection of the second folding line 18 and the folding line 20 for folding, which are boundaries between the end walls 10A and 10B. A breaking portion 21 extending in the direction is provided. Similar to the first embodiment, the fracture portion 21 has a perforated shape provided at a predetermined interval so that a plurality of cutting lines are positioned on a straight line.

  The upper inner flaps 14A and 14B are provided with punched portions 22 on both sides. The punched portion 22 has inclined edges extending at an inclination angle of 45 degrees from the intersection between the first folding curve 13 and the second folding curve 18 toward the fracture portion 21 from both side ends of the upper inner flaps 14A and 14B. 22a, and the side edge 22b extended so that it may be located on the extended part over the front-end edge of upper inner flap 14A, 14B. And in this embodiment, when setting it as the 2nd sealing state, the overlap part 23 formed by the 2nd folding line 18, the folding line 20, the fracture | rupture part 21, and the punching part 22, and the total height adjustment folding line The top ends of the upper outer flaps 15A and 15B are inserted between the side walls 11B and 11A bent along the side 19. Therefore, the punching portion 22 is configured such that an end edge 22c extending in the orthogonal direction toward the side edge 22b is formed at the tip of the inclined edge 22a in order to improve the workability at the time of insertion. Yes. Furthermore, the notch part 24 for making the width | variety of a horizontal direction small is provided in the both sides of upper outer flap 15A, 15B, and the interference at the time of insertion is reduced.

  When the packaging box of the second embodiment is in the first sealed state with a high overall height, as shown in FIG. 8, after folding the upper inner flaps 14A and 14B along the second folding line 18, the upper outer flap 15A and 15B are bent along the second folding curve 18, and the front end portions of the upper outer flaps 15A and 15B which are abutted are fixed by a fixing means such as an adhesive tape. Thereby, it can be set as the 1st sealing state shown in FIG.

  On the other hand, when the second sealed state having a low overall height is used, the upper inner flaps 14A and 14B are partially broken along the broken portion 21 as shown in FIG. Then, the end walls 10A and 10B and the side walls 11A and 11B are bent along the folding height curve 19 for height adjustment, and the upper sides of the end walls 10A and 10B are partially bent along the folding curve 20 for folding. As a result, the upper regions of the end walls 10A and 10B including the upper inner flaps 14A and 14B constituting the overlapping portion 23 are folded inward, and in conjunction with the upper regions of the side walls 11A and 11B including the upper outer flaps 15A and 15B. The area falls inward. Further, the overlapping portion 23 separated from the upper inner flaps 14A and 14B due to the breakage of the breaking portion 21 is bent along the folding curve 20 with respect to the end walls 10A and 10B, and the end walls 10A and 10B The flaps 14A and 14B are overlapped in a state of being sandwiched between the side walls 11A and 11B and the upper outer flaps 15A and 15B.

  Thereafter, as in the first embodiment, one of the upper outer flaps 15A and 15B (15B in FIG. 11) is superimposed on the upper inner flap 14A and 14B, and the other (15A in FIG. 11) is superimposed on the upper side. Bend it to let it go. At that time, as shown in FIG. 11, the tip end of the one upper outer flap 15 </ b> B that has been bent first is inserted between the upper outer flap 15 </ b> A and the overlapping portion 23. Thereafter, the tips of the upper outer flaps 15A and 15B and the upper outer flaps 15B and 15A located on the lower side are fixed by a fixing means such as an adhesive tape. Thereby, it can be set as the 2nd sealing state which obstruct | occluded the surface with upper outer flap 15A, 15B.

  Thus, in the packaging box of the second embodiment, as in the first embodiment, the first sealed state where the overall height is high, and the overall height folded at the overall height adjustment folding curve 19 and the folding folding curve 20 is low. The volume can be varied depending on the sealed state. Therefore, it is possible to obtain the same operations and effects as in the first embodiment, such as the type of packaging box to be prepared and the amount of cushioning material can be reduced, and the cost can be reduced.

  Moreover, in the second sealed state, the packaging box of the second embodiment has the upper outer flaps 15B and 15A facing each other between the overlapping portion 23 and the side walls 11A and 11B bent along the total height adjustment folding curve 19. Since it is set as the structure which inserts a front-end | tip, a 2nd sealing state can be maintained even in the state which is not fixed by the fixing means. That is, by inserting the upper outer flaps 15B and 15A between the overlapping portion 23 and the side walls 11A and 11B, they are locked. Therefore, the repulsive force in the second sealed state can be further reduced. As a result, in a state where the fixing means is used, the sealed state can be reliably maintained.

  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, in each of the above embodiments, the total height adjustment folding curve 19 and the folding curve 20 are provided only on the upper side of the end walls 10A, 10B and the side walls 11A, 11B. By providing it also on the lower flaps 16A, 16B, 17A, 17B side, it is possible to adjust the total height in three stages. Further, as shown in FIG. 13, a plurality of folding height curves 19A, 19B for height adjustment are provided at predetermined intervals from the second folding curve 18 (two in the figure), and the folding curves 19A, 19B for height adjustment are provided at both ends. While providing the folding line 20, you may provide the fracture | rupture part 21 so that it may extend over the folding line 20 for folding below the 2nd folding line 18. FIG.

  Further, in each of the above embodiments, the breaking portion 21 is configured by providing a plurality of cutting lines at a predetermined interval so as to form a perforation, but a half cutting line (liner) obtained by cutting substantially half of the thickness of the cardboard paper. (Cut). In this case, it is preferable that the back paper side constituting the corrugated paper is cut and the front cover side is not cut.

  Furthermore, the folding line 20 for folding is constituted by a lead rule in the first embodiment, and is constituted by a normal folding line formed by putting a rule in the second embodiment, but is constituted by a half cut line similar to the above. May be.

  And in each said embodiment, since it was set as the general sealing state of the normal packaging box, especially the 1st sealing state WHEREIN: Upper inner flap 14A, 14B which is a 1st flap is located inside, and the upper side which is a 2nd flap The outer flaps 15A and 15B are positioned on the outer side. In this first sealed state, the second flaps 15A and 15B are positioned on the inner side, and the first flaps 14A and 14B are positioned on the outer side. May be. In this case, the first flaps 14A and 14B have a shape punched out so that a locking piece is formed at the leading edge, and the second flaps 15A and 15B have locking holes into which the locking pieces can be inserted and locked. It is preferable to adopt a configuration in which

It is a perspective view which shows the state before sealing of the packaging box of 1st Embodiment of this invention. It is a perspective view which shows one process at the time of making a packaging box into a 1st sealing state. It is a perspective view which shows the 1st sealing state of a packaging box. It is a perspective view which shows one process at the time of making a packaging box into a 2nd sealing state. It is a perspective view which shows the 2nd sealing state of a packaging box. It is a top view which shows the blank of the packaging box of 1st Embodiment. It is a perspective view which shows the state before sealing of the packaging box of 2nd Embodiment. It is a perspective view which shows one process at the time of making a packaging box into a 1st sealing state. It is a perspective view which shows the 1st sealing state of a packaging box. It is a perspective view which shows one process at the time of making a packaging box into a 2nd sealing state. It is a perspective view which shows the 2nd sealing state of a packaging box. It is a top view which shows the blank of the packaging box of 2nd Embodiment. It is a top view which shows the blank of the packaging box of a modification.

Explanation of symbols

10A, 10B ... end wall 11A, 11B ... side wall 12 ... glue margin 13 ... first folding line (boundary line)
14A, 14B ... Upper inner flap (first flap)
15A, 15B ... Upper outer flap (second flap)
16A, 16B ... Lower inner flap 17A, 17B ... Lower outer flap 18 ... Second folding line (boundary line)
19, 19A, 19B ... Folding curve for height adjustment 20 ... Folding curve for folding 21 ... Fracture part 22 ... Punching part 22a ... Inclined edge 22b ... Side edge 22c ... End edge 23 ... Overlapping part 24 ... Notch part

Claims (2)

In each packaging box provided with a pair of end walls and side walls, a first flap connected to the end walls, and a second flap connected to the side walls,
A folding line for overall height adjustment extending in the lateral direction is provided on the end wall and the side wall that are continuous in the lateral direction,
While providing a folding fold curve extending from the both ends of the total height adjustment folding curve of each end wall at an inclination angle of approximately 45 degrees toward the continuous first flap,
From the intersection of the folding line for folding and the boundary between the end wall and the first flap, a rupture portion extending toward the tip of the first flap is provided,
A first sealed state folded along a boundary line between each flap and each wall;
The first flap is broken along the broken portion, and the first flap and a part of the end wall are folded by folding along the folding height curve for folding and the folding curve for folding, and the first flap is closed with a second flap. A packaging box characterized by enabling a second sealed state having an overall height lower than that of the first sealed state.   In the second sealed state, the overlapping portion that is surrounded by the boundary line between the end wall and the side wall, the folding curve for the folding, and the fracture portion and that is superimposed on the end wall that is bent along the total height adjusting folding curve; The packaging box according to claim 1, wherein the tip of the second flap is inserted between the side wall bent along the total height adjustment folding curve.

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