JP5165467B2 - Packaging box with buffer function - Google Patents

Description

  The present invention relates to a packaging box for individually storing products such as cosmetics filled in bottles and tubes.

Conventionally, a packaging box for individually storing cosmetic bottles used for liquid cosmetics or the like is provided with a buffering function so that the cosmetic bottles do not rattle inside the box body. Many are known in which a buffer piece having a buffer function is provided integrally with a box-forming piece punched from a sheet. For example, a packaging box disclosed in Patent Document 1 is assembled by a box-forming piece integrally punched from one blank sheet, and the box-forming piece is bonded to four side surfaces connected in parallel. And a piece. An upper lid piece formed at one end portion of one side surface, and a flap formed at an end portion on the upper lid piece side surface adjacent to the one side surface, and a folded portion formed to be connected to the end portion of the flap; A gluing portion formed so as to be connected to the end portion of the folded portion is provided. Then, when the flap is folded at 90 degrees with respect to the side surface so as to close the opening formed by the side surfaces, the folded portion is bent toward the inner side of the box and is formed on the upper surface portion of the cosmetic bottle. It abuts and cushions.
JP 10-86933 A

  In the case of the above-described background art, the product is protected by eliminating the rattling in the vertical direction, and the horizontal shakiness cannot be eliminated. In recent years, containers filled with liquid cosmetics and the like have been designed with a beautiful appearance, and have a clean cap. Such caps and containers may rub against the back of the packaging box when scratched in the packaging box, and may scratch or peel off the coating. There has been a need for a packaging box that prevents rattling.

  The present invention has been made in view of the above-mentioned problems of the background art, and a buffer portion having a buffer function in the horizontal direction is formed by a simple operation of folding a flap or the like with a simple structure, so that the contents can be reliably secured. It is an object to provide a packaging box with a buffering function that can be protected.

  The present invention comprises a box-forming piece integrally punched from a single blank sheet. The box-forming piece includes a side surface connected in parallel to each other and an upper lid piece formed at the end of the side surface. And a flap formed to be connected to an edge of the other side of the upper lid piece and a portion having a width narrower than the width of the flap in the extending direction of the flap. In the state in which a glued portion to be glued to the back surface of the flap, a buffer part connected to the glued portion and larger than the glued portion is provided, and the box-forming piece is assembled into a box When the flap is folded at 90 degrees with respect to the side surface so as to close the opening formed by the above, the buffer portion rises from the flap while the front end portion abuts against the back surface of the side surface. Projects inside the box and cushions the box contents A buffer function with packaging box comes into contact with.

  Further, the glued portion is formed continuously with a part of the end portion of the flap and smaller than the flap, and next to the glued portion at the end portion of the flap, is continuous from the tip end portion of the flap. A buffer holding part formed in a strip shape longer than the glued part is provided, the glued part is separated from the buffer part by a crease line, and the box-forming piece is assembled into a box, When the flap is folded at 90 degrees with respect to the side surface so as to close the opening formed by the above, the buffer holding part is formed in a three-dimensional manner by bending toward the inside of the box.

  The buffer holding part and the glued part are separated by a band-like slit extending from the end of the flap into the buffer part, and the tip of the buffer holding part and the edge of the buffer part are folded thinly. It is connected by the music part.

  Further, the buffer portion is provided at an end portion of the gluing portion by being divided by a crease line that intersects a crease line between the flap and the gluing portion, and the box-forming piece is a box body When the flap is folded at 90 degrees with respect to the side surface so as to close the opening formed by the side surface in the assembled state, the glued portion is folded together with the flap, and the tip of the buffer portion is It is in contact with the side surface and is bent along a crease line between the glued portion and the buffer portion, and is formed into a three-dimensional shape by bending in a concave shape toward the inside of the box.

  The packaging box with a buffer function according to the present invention has a simple structure, and a buffer portion having a buffer function in the horizontal direction is formed by a simple operation of bending a flap or the like with respect to the side surface, thereby reliably protecting the contents. It is something that can be done.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a packaging box 10 with a buffer function according to the first embodiment of the present invention. The packaging box 10 with a buffer function according to this embodiment is made of a single blank sheet such as paper. A box-forming piece 12 formed by striking is assembled and provided.

  FIG. 3 is a developed view of the box-forming piece 12 as viewed from the surface. The box-forming piece 12 has side surfaces 14, 16, 18, and 20 connected in parallel to each other. The side surfaces 14, 16, 18, and 20 are rectangles having substantially the same size, and the connecting width direction is formed longer than the length in the connecting direction. Further, a glued piece 22 that is glued to the back surface of the side surface 20 in the assembled state of the packaging box 10 with a buffer function is provided on the side edge portion of the side surface 14. The glued piece 22 and the side surfaces 14, 16, 18, and 20 are divided by crease lines 24, 26, 28, and 30, respectively.

  On the side surface 14, a bottom cover piece 32 is provided at one end portion in a direction perpendicular to the connecting direction of the side surfaces and separated by a crease line 34. An insertion piece 36 is further provided on the end of the bottom lid piece 32 opposite to the crease line 34 and separated by a crease line 38. Short cut lines are provided at both ends of the crease line 38 so that the insertion piece 36 can be easily locked with flaps 40 and 74 described later.

  A trapezoidal flap 40 is provided at the end of the side surface 16 adjacent to the crease line 34 of the side surface 14 and separated by a crease line 42. A trapezoidal flap 44 is provided at the end of the side surface 16 opposite to the crease line 42 and separated by a crease line 46. At the end of the flap 44 opposite to the crease line 46, a rectangular glued portion 48 is provided at a position close to the crease line 26 on the side surface 14, separated by the crease line 50. The glued portion 48 is formed so that the width in the direction of the crease line 46 is narrower than the crease line 46, and the interval from the crease line 50 of the glue part 48 to the crease line 54 on the opposite side is folded from the crease line 46 of the flap 44. It is narrower than the width up to the ruled line 50. A substantially rectangular buffer portion 52 is provided on the crease line 54 of the pasting portion 48. The buffer portion 52 is longer than the combined length of the glued portion 48 and the flap 44 in the connecting direction, and the connecting width direction is substantially equal to the end portion of the flap 44 opposite to the crease line 46.

  The buffer holding portion 56 extends from the crease line 50 at a position near the crease line 28 on the side surface 16 of the end of the flap 44 opposite to the crease line 46, that is, at a position where the glue portion 48 is not provided. The lines are separated by a crease line 58. The buffer holding part 56 is formed in a belt shape extending substantially perpendicular to the crease line 58, passes through the side of the glued part 48, passes through the crease line 54, and is connected to the buffer part 52. . The front end of the buffer holding unit 56 on the buffer unit 52 side reaches the middle of the side edge 52a close to the side surface 18 of the buffer unit 52, and is provided at a substantially right angle from the side edge 52a of the buffer unit 52 toward the center. It is delimited by the first slit 60. A side edge portion of the buffer holding portion 56 on the glued portion 48 side is divided by a second slit 62. The second slit 62 extends from the crease line 58 at a substantially right angle with a constant width, bends beside the crease line 54, and is bent to the side opposite to the side edge portion 52a. Thereby, the side edge part of the buffer holding | maintenance part 56 bends, and becomes a concave shape by which the outer peripheral surface of the cap 108 of the accommodation thing mentioned later is fitted. The leading ends of the first slit 60 and the second slit 62 are located close to each other, and a bent portion 63 is provided by leaving a gap between them at a slight width. At the center of the buffer holding portion 56, a crease line 64 is provided for increasing the rigidity along the longitudinal direction.

  An upper lid piece 66 is provided at an end portion of the side surface 18 adjacent to the crease line 46 of the side surface 16 and separated by a crease line 68. An insertion piece 70 is further provided on the opposite end of the upper lid piece 66 by being separated by a crease line 72.

  A trapezoidal flap 74 is provided via a crease line 76 at an end of the side face 20 away from the crease line 68 of the side face 18. A trapezoidal flap 78 is provided at the end of the side surface 20 opposite to the crease line 76 and separated by the crease line 80. The end of the flap 78 opposite to the crease line 80 is symmetrical with respect to the glued portion 48, the buffer portion 52, and the buffer holding portion 56 with the longitudinal center line of the side surface 18 as the virtual axis of symmetry. The pasting part 82 of the shape of this, the buffer part 86, and the buffer holding part 90 are provided.

More specifically, a rectangular glued portion 82 is provided via a crease line 84 at a position away from the crease line 30 on the side surface 18 at the end of the flap 78 opposite to the crease line 80. The glue part 82 is formed so that the width in the direction of the crease line 80 is narrower than the crease line 80, and the interval from the crease line 84 of the glue part 82 to the crease line 88 on the opposite side is folded from the crease line 80 of the flap 78. The width to the ruled line 84 is narrower. A substantially rectangular buffer part 86 is provided on the crease line 88 of the glued part 82.
The buffer portion 86 is longer than the combined length of the glued portion 82 and the flap 78 in the connecting direction, the connecting width direction is slightly shorter than the flap 78, and the side edge portion away from the upper cover piece 66 of the buffer portion 86. 86 a is located on the inner side of the side edge portion of the glued portion 82. At the end of the flap 78 opposite to the crease line 80, at a position close to the crease line 30 on the side face 18, a buffer holding portion 90 is provided by being separated by a crease line 92 extending from the crease line 84. The buffer holding part 90 is formed in a band extending substantially perpendicular to the crease line 92, passes through the side of the glued part 82, passes through the crease line 88, and reaches the buffer part 86. . The tip of the buffer holding part 90 on the buffer part 86 side reaches the middle of the side edge part 86b of the buffer part 86 close to the side face 18, and is provided from the side edge part 86b of the buffer part 86 toward the center at a substantially right angle. The first slits 94 are separated. The side edge portion of the buffer holding portion 90 on the glued portion 82 side is divided by a second slit 96. The second slit 96 is provided in a shape extending from the crease line 92 at a substantially right angle and with a constant width, bent along the crease line 88, and bent away from the side edge 86b. Thereby, the side edge part of the buffer holding | maintenance part 90 bends, and becomes a concave shape by which the outer peripheral surface of the cap 108 of the accommodation thing mentioned later is fitted. The leading ends of the first slit 94 and the second slit 96 are located close to each other, and a bent portion 97 is provided by leaving a gap between them at a slight width. At the center of the buffer holding portion 90, a crease line 98 is provided for increasing the rigidity along the longitudinal direction.

  Next, an example of an assembly method of the packaging box 10 with a buffer function according to this embodiment will be described. Here, FIG. 3 is a view of the surface of the box-forming piece 12 of the packaging box 10 with a buffer function, and the folding method in which the surface of the box-forming piece 12 is convex is normally folded and the back surface is convex. This folding method is called reverse folding.

  First, the glue 100 is applied to the back surface of the glued portion 48, the crease line 50 is normally folded, and the back surface of the flap 44 is glued to the back surface of the glued portion 48 by the glue 100. Thereby, the buffer part 52 and the buffer holding part 56 are folded along the back surface of the side surface 16. Next, the glue 102 is applied to the back surface of the glued portion 82, the crease line 84 is normally folded, and the back surface of the flap 78 is glued to the back surface of the glued portion 82 by the glue 102. Thereby, the buffer part 86 and the buffer holding part 90 are folded along the back surface of the side surface 20. Next, the crease line 26 is normally folded and glue 104 is applied to the surface of the glued piece 22, and the crease line 30 is further folded, and the back surface of the side surface 20 is glued with glue 104 as shown in FIG. The surface of the piece 22 is glued. At this time, since the side edge portion 86a of the buffer portion 86 is separated from the side edge portion of the side surface 20, there is no problem when the glued piece 22 is glued to the side edge portion of the side surface 20.

  Next, in a factory or the like for storing and packaging a cosmetic bottle 106 containing liquid cosmetics or the like as a product, the crease lines 24, 26, 28, and 30 are each normally folded at 90 degrees and pasted into boxes. The forming piece 12 is formed into a rectangular box.

  Then, the flap 44 is forwardly folded at 90 degrees along the crease line 46 on the side surface 16. As a result, the glued portion 48 is tilted in the horizontal direction together with the flap 44, but the buffer portion 52 moves in the direction of the bottom cover piece 32 along the back surface of the side surface 16, and the glue portion 48 and the buffer portion 52 are folded. The ruled line 54 is folded back approximately 90 degrees. At this time, since the glued portion 48 is narrower than the flap 44, the buffer portion 52 slightly curves downward from the crease line 54 and comes into contact with the back surface of the side surface 16. Further, the end of the buffer holding part 56 on the crease line 58 side approaches the end of the bent part 63 side due to the normal folding of the flap 44, and the distance becomes shorter, so that the buffer holding part 56 swells inside the box. So that it is curved. Thereby, the crease line 58 between the buffer holding part 56 and the flap 44 and the bent part 63 between the buffer holding part 56 and the buffer part 52 are normally folded at about 90 degrees, and the buffer holding part 56 is box-shaped. It is curved inward and is formed three-dimensionally.

  Similarly, when the flap 78 is normally folded at 90 degrees along the crease line 80 on the side surface 20, the glued portion 82 is tilted in the horizontal direction together with the flap 78, but the buffer portion 86 extends along the back surface of the side surface 20. It moves in the direction of the piece 32, and the crease line 88 between the glued portion 82 and the buffer portion 86 is reversely folded at approximately 90 degrees. At this time, since the glued portion 82 is narrower than the flap 78, the buffer portion 86 slightly curves downward from the crease line 88 and contacts the back surface of the side surface 20. Further, the end of the buffer holding portion 90 on the crease line 92 side approaches the end on the bent portion 97 side due to the normal folding of the flap 78, and the distance becomes shorter, so that the buffer holding portion 90 swells inside the box. So that it is curved. Thereby, the crease line 92 between the buffer holding unit 90 and the flap 78 and the bent part 97 between the buffer holding unit 90 and the buffer unit 86 are normally folded at about 90 degrees, and the buffer holding unit 90 is It is curved inward and is formed three-dimensionally.

  Next, the upper lid piece 66 is normally folded at 90 degrees by the crease line 68, the insertion piece 70 is normally folded by the crease line 72, and the insertion piece 70 is inserted into the back surface of the side surface 14 and locked. Thus, the upper surface portion is formed.

  Thereafter, the cosmetic bottle 106 as a product is inserted from below the box from the upper end of the cosmetic bottle 106. A cap 108 is attached to the upper end portion of the cosmetic bottle 106 to seal the contents. As shown in FIG. 2, the side edge portion of the buffer holding portion 56 abuts on the side surface 16 side of the outer peripheral surface of the cap 108 of the cosmetic bottle 106. Similarly, the side edge portion of the buffer holding portion 90 abuts on the side surface 20 side of the outer peripheral surface of the cap 108 of the cosmetic bottle 106.

  Next, the flaps 40 and 74 are normally folded at 90 degrees by the crease lines 42 and 76, and then the bottom cover piece 32 is normally folded by 90 degrees by the crease line 34, and the insertion piece 36 is normally folded by the crease line 38. The insertion piece 36 is inserted and locked on the back side of the side surface 18, and the bottom cover piece 32 forms a bottom surface portion.

  In the packaging box 10 with a buffer function according to this embodiment, when the flaps 44 and 78 and the buffer holding portions 56 and 90 are provided on the flaps 44 and 78 that close the opening of the box body, and the flaps 44 and 78 are closed, The buffer parts 52 and 86 and the buffer holding parts 56 and 90 rise from the flaps 44 and 78 to the inside of the box, and can hold the cap 108 of the cosmetic bottle 106 in a horizontal and vertical direction. Then, rattling of the cosmetic bottle 106 in the packaging box 10 with a buffering function is eliminated, and the cosmetic bottle 106 and the cap 108 are rubbed against the back surfaces of the side surfaces 14, 16, 18, and 20 of the packaging box 10 with a buffering function. Prevents scratches and peeling of paint, and protects them reliably. Thereby, even if the cosmetic bottle 106 and the cap 108 are decorated with fine irregularities and printing with a clean design, they can be safely transported and stored. Further, the buffer holding portions 56 and 90 are provided with crease lines 64 and 98 in the longitudinal direction, and are elastically bent along the crease lines 64 and 98 in accordance with the position and shaking of the cap 108 that comes into contact with the buffer holders 56 and 90. Function can be obtained.

  Next, a second embodiment of the present invention will be described with reference to FIGS. Here, the same members as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted. The packaging box 110 with a buffer function of this embodiment is provided by assembling a box forming piece 112 formed by punching out a single blank sheet such as paper.

  FIG. 7 is a developed view of the box-forming piece 112 as viewed from the surface, and the side surfaces 14, 16, 18, and 20 are formed in parallel with each other. A glued piece 22 is provided on the side edge of the side surface 14. The glued piece 22 and the side surfaces 14, 16, 18, and 20 are divided by crease lines 24, 26, 28, and 30, respectively.

  A trapezoidal flap 116 is provided at the end of the side surface 16 opposite to the crease line 42 by being separated by a crease line 118, and a side edge 116 a continuous with the crease line 28 of the flap 116 is formed by a crease line 118. The corner part with the edge part on the opposite side is notched diagonally. A trapezoidal quadrangular glued portion 120 is provided at the end of the flap 116 opposite to the crease line 118 and separated by a break line 122. The glued portion 120 is provided with an inclined end portion 120a on an extension line of the side edge portion 116a that is obliquely cut out of the flap 116. A buffer portion 124 is provided at the end portion 120 a of the glued portion 120 by being separated by a break line 126. The buffer portion 124 has a deformed hexagonal shape, is formed long in a direction substantially perpendicular to the crease line 118, and a plurality of crease lines are formed along the longitudinal direction.

  The end portion of the side surface 20 opposite to the crease line 76 has a symmetrical shape with respect to the flap 116, the glued portion 120, and the buffer portion 124 with the longitudinal center line of the side surface 18 as an imaginary symmetry axis. The flap 128, the pasting part 132, and the buffer part 136 are provided.

  More specifically, a trapezoidal flap 128 is provided at the end of the side surface 20 opposite to the crease line 76, and is separated by a crease line 130. A side edge portion 128a continuous with the crease line 30 of the flap 128 is folded. A corner between the ruled line 130 and the opposite end is cut off obliquely. A trapezoidal quadrangular glued portion 132 is provided at the end of the flap 128 opposite to the crease line 130 and separated by a break line 134. The glued portion 132 is provided with an inclined end portion 132 a on an extension line of the side edge portion 128 a that is notched obliquely of the flap 128. A buffer portion 136 is provided at the end portion 132 a of the pasting portion 132 by being separated by a break line 138. The buffer portion 136 is a deformed hexagon, and is formed long in a direction substantially perpendicular to the crease line 130, and a plurality of crease lines are formed along the longitudinal direction.

  Next, an example of an assembly method of the packaging box 110 with a buffer function according to this embodiment will be described. Here, FIG. 7 is a view of the surface of the box-forming piece 112 of the packaging box 110 with a buffer function, and the folding method in which the surface of the box-forming piece 112 is convex is forwardly folded, and the back surface is convex. This folding method is called reverse folding.

  First, the glue 140 is applied to the back surface of the glued portion 120, the breaking line 122 is normally folded, and the back surface of the flap 116 is glued to the back surface of the glued portion 120 by the glue 140. Thereby, the buffer portion 124 is folded along the back surface of the side surface 16. Next, glue 142 is applied to the back surface of the glued portion 132, the breaking line 134 is folded forward, and the back surface of the flap 128 is glued to the back surface of the glued portion 132 by the glue 142. Thereby, the buffer portion 136 is folded along the back surface of the side surface 20. Next, the crease line 26 is forward-folded, the paste 144 is applied to the surface of the glued piece 22, and the crease line 30 is further folded, and the back surface of the side surface 20 is glued with glue 144 as shown in FIG. 22 is glued to the surface.

  Next, in a factory or the like where the cosmetic bottle 106 is accommodated and packaged, the crease lines 24, 26, 28, and 30 are each folded 90 degrees to form a rectangular box.

  Then, the flap 116 is normally folded at 90 degrees along the crease line 118 on the side surface 16. The glued portion 120 is tilted horizontally along with the flap 116, but the buffer portion 124 is pushed down along the back surface of the side surface 16, so that the breaking line 126 between the glued portion 120 and the buffer portion 124 is reversely folded, The part 124 rises from the glued part 120 at the breaking line 126 and is formed in a three-dimensional shape by being curved concavely toward the inside of the box.

  Similarly, when the flap 128 is normally folded at 90 degrees by the crease 130 on the side surface 20, the glued portion 132 is tilted in the horizontal direction together with the flap 128, but the buffer portion 136 is pushed down along the back surface of the side surface 20. Therefore, the breaking line 138 between the glued portion 132 and the buffer portion 136 is reversely folded, and the buffer portion 136 rises from the glued portion 132 along the fracture line 138 and is curved concavely toward the inside of the box. Formed.

  Thereafter, the upper lid piece 66 is normally folded at 90 degrees with the crease line 68, the insertion piece 70 is normally folded with the crease line 72, the insertion piece 70 is inserted into the back surface of the side surface 14 and locked, and the upper opening is Closed.

  Thereafter, the cosmetic bottle 106 as a product is inserted from below the box from the upper end of the cosmetic bottle 106. A cap 108 is attached to the upper end portion of the cosmetic bottle 106 to seal the contents. The surface of the buffer portion 124 abuts on the side surface 16 side of the outer peripheral surface of the cap 108 of the cosmetic bottle 106. Further, the surface of the buffer portion 136 also abuts on the side surface 20 side of the outer peripheral surface of the cap 108 of the cosmetic bottle 106.

  Next, the flaps 40 and 74 are normally folded at 90 degrees by the crease lines 42 and 76, and then the bottom cover piece 32 is normally folded by 90 degrees by the crease line 34, and the insertion piece 36 is normally folded by the crease line 38. The insertion piece 36 is inserted and locked on the back side of the side surface 18, and the bottom cover piece 32 forms a bottom surface portion.

  According to the packaging box 110 with a buffer function of this embodiment, it has the same effect as that of the above embodiment, and the flaps 116 and 128 are normally folded at approximately 90 degrees with respect to the side surfaces 14, 16, 18 and 20. The buffer portions 124 and 136 are inclined to the inside of the box body with a simple operation that is performed, and the cap 108 of the cosmetic bottle 106 can be reliably protected. Since the buffer portions 124 and 136 are in contact with the cap 108 obliquely from above, they can be held in a buffering manner in both the horizontal direction and the vertical direction. Since a plurality of crease lines are formed in the buffer parts 124 and 136, the buffer parts 124 and 136 are elastically bent in accordance with the position and shaking of the cap 108 that abuts, and a high buffer function can be obtained.

  In addition, the packaging box with a buffer function according to the present invention is not limited to the above-described embodiments, and the shape, size, number, and the like of the glued portion and the buffer portion can be appropriately changed. The goods to be stored can be used for various things other than the cosmetic bottle. In addition to paper, the material of the packaging box with a buffer function can be selected freely such as synthetic resin or a laminate of synthetic resin and paper.

It is a perspective view of the packaging box with a buffer function of a first embodiment of this invention. It is a longitudinal cross-sectional view of the packaging box with a buffer function of this embodiment. It is an expanded view of the packaging box with a buffer function of this embodiment. It is an expanded view which shows the assembly process of the packaging box with a buffer function of this embodiment. It is a perspective view of the packaging box with a buffer function of a second embodiment of this invention. It is a longitudinal cross-sectional view of the packaging box with a buffer function of this embodiment. It is an expanded view of the packaging box with a buffer function of this embodiment. It is an expanded view which shows the assembly process of the packaging box with a buffer function of this embodiment.

Explanation of symbols

10 Packaging Box with Buffer Function 12 Box Forming Pieces 14, 16, 18, 20 Side 22 Glued Pieces 44, 78 Flap 48, 82 Glued Portions 52, 86 Buffer Portions 56, 90 Buffer Holding Portions 60, 94 First Slit 62, 96 Second slit 63 Bent part 66 Upper lid piece

Claims (4)

  It consists of a box-shaped piece integrally punched from one blank sheet, and this box-shaped piece includes a side surface connected in parallel to each other, an upper lid piece formed at the side edge, and another piece A flap formed on the side of the side of the upper lid piece, and a back surface of the flap that is continuous with the flap in the extending direction of the flap and has a portion that is narrower than the width of the flap. A gluing portion that is glued to the gluing portion, a buffer portion that is connected to the gluing portion and is larger than the gluing portion, and is formed by the side surface in a state where the box-forming piece is assembled into a box. When the flap is folded at 90 degrees with respect to the side surface so as to close the opening, the buffer portion comes into contact with the back surface of the side surface and rises from the flap to rise inside the box. Projecting into the box and abutting against the box contents Buffering function with packaging box, characterized in that.   The gluing portion is continuous with a part of the end portion of the flap and formed smaller than the flap, and the gluing portion of the end portion of the flap is continuous from the front end portion of the flap. A buffer holding part formed in a strip shape longer than the attaching part is provided, the glued part is separated from the buffer part by a crease line, and is formed by the side surface in a state where the box forming piece is assembled into a box. When the flap is folded at 90 degrees with respect to the side surface so as to close the opened opening, the buffer holding portion is curved and formed in a three-dimensional manner toward the inside of the box. Item 1. A packaging box with a buffer function according to Item 1.   The buffer holding part and the glued part are separated by a band-like slit extending from the end of the flap into the buffer part, and the tip of the buffer holding part and the edge of the buffer part are folded thinly. The packaging box with a buffer function according to claim 2, wherein the packaging boxes are connected by a curved portion. The buffer portion is provided at an end portion of the glued portion divided by a crease line that intersects with a crease line between the flap and the glued portion, and the box-forming piece is assembled into a box In this state, when the flap is folded at 90 degrees with respect to the side surface so as to close the opening formed by the side surface, the glued portion is folded together with the flap, and the tip of the buffer portion is the side surface. The shock absorber according to claim 1, wherein the shock absorber is formed in a three-dimensional shape by being bent at a crease line between the glued portion and the buffer portion and curved in a concave shape toward the inner side of the box body. Function packaging box.

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