Buffer function with packaging box

Abstract

To provide a packaging box with a cushioning function that has a high cushioning function and can surely protect contents. [Solution] The container has an adhesive piece (23) that is glued to the backside of the side surface (14) assembled to the cylindrical body to maintain the shape of the cylindrical body, and a bottom (118) that closes the lower opening of the cylindrical body. A pair of opposing buffer sections (70, 130) are provided inside the bottom (118), and the buffer sections (70, 130) are respectively connected to the side surfaces (16, 20) that are positioned approximately parallel to each other. The buffer section (70) has a bottom surface piece (74) that forms the bottom (118), a rising piece (76) that is continuous with the end of the bottom surface piece (74) opposite the side surface (16) and rises upward, and a top surface piece (78) that is continuous with the end of the rising piece (76) and partway up the height of the side surface (16). The top surface piece (78) holds the bottom surface of the contents, and has a lateral protrusion (128) that protrudes laterally beyond the rising piece (76).

Description

[Technical field]

[0001] The present invention relates to a packaging box with a cushioning function, which has a cushioning partition part formed integrally with the box body and is used to cushion a plurality of easily breakable items such as glass containers. [Background technology]

[0002] Conventionally, there is a packaging box formed by folding and gluing box-forming pieces that are punched out integrally from a sheet of paper or the like, and assembling them. Some of these packaging boxes have shock-absorbing partitions that are integral with the box-forming pieces to hold a plurality of contents that are sensitive to shock, such as glass bottles.

[0003] For example, a packaging box with a buffer partition disclosed in Patent Document 1 has four side panels that are connected to each other and assembled into a cylindrical shape, and a buffer support portion is provided on the bottom side of each pair of side panels that face each other, extending from the bottom flap. Each buffer support portion is provided with a buffer piece, a buffer bottom portion, and a buffer glued piece that are provided in succession in that order, and a buffer partition piece extends to the side of the buffer piece. In an assembled state, the buffer support portion is provided integrally with the space within the box body at a predetermined distance from the bottom flap, and the buffer partition piece divides the space within the box body. This positions the buffer partition piece between two stored items, preventing them from colliding with each other.

[0004] In addition, the case with bottle breakage prevention function disclosed in Patent Document 2 has a protrusion cut into at least one of the pair of rising plates rising from the center of the bottom and the top plate, with the tip reaching the top plate side without any creases from the rising plates, and when the top plate is in a horizontal position, the protrusion protrudes upward near the rising plates. This positions the protrusion between the two contents, preventing them from colliding with each other. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2015-13672 A [Patent Document 2] JP 2010-36952 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the case of the above-mentioned background art, the vertically rising buffer pieces and rising plates rise directly from the bottom of the box body, and are therefore susceptible to impact from the bottom of the box body. Also, the buffer partition pieces and protrusions separating a pair of contents are provided vertically between the pair of contents to prevent them from colliding with each other, but the width of the protrusions is narrow, and the pair of contents is only separated by the thickness of the sheet itself, so the buffer performance is low and they are susceptible to impact.

[0007] The present invention has been made in consideration of the problems in the background art described above, and has an object to provide a packaging box with cushioning function that has high cushioning function and can reliably protect the contents. [Means for solving the problem]

[0008] The present invention is a packaging box with a cushioning function, which is made of one box-forming piece, has a side surface assembled to a cylinder, a glued piece glued to the side surface to maintain the shape of the cylinder, a bottom portion closing the lower opening of the cylinder, and a pair of cushioning sections disposed inside the bottom portion and facing each other, the cushioning sections being connected to the side surfaces positioned approximately parallel to each other. The cushioning sections are provided with a bottom piece forming the bottom portion, a rising piece that is continuous with the end of the bottom piece opposite the side surface and rises upward, and a top piece that is continuous with the end of the rising piece and a part of the height of the side surface. The top piece is, The cylinder is inserted The pair of buffer parts are provided with the rising pieces facing each other. The upper piece is provided with a lateral protrusion that protrudes laterally beyond the rising piece, and the lateral protrusion serves as a spacer that maintains the distance between the pair of contained objects. The pair of buffer parts may be such that the rising pieces face each other with a distance therebetween.

[0009] moreover,The pair of buffer portions have upper surface pieces of different heights, and the lateral protrusion is provided on the upper surface piece that is higher. , The lateral protrusion Tip faces the side of the contents held on the lower top piece.

[0010] The box-forming pieces are provided with side surfaces connected in parallel to each other, and a glued piece provided on one end of the side surfaces in the connecting direction and glued to the side surface at the other end of the side surfaces, and the buffer section is provided via a fold line at the end of the side surfaces that are approximately parallel to each other and intersect in the connecting direction of the side surfaces and are close to the bottom. The buffer section is provided in the order of the bottom piece, the rising piece, and the top piece, each separated by a fold line, and a top piece glued section that is glued to the back surface of the side surface on which the buffer section is provided is provided via a fold line at the end of the top piece. The lateral protrusions are provided surrounded by a U-shaped cutting line formed on the rising piece, and the cutting line surrounding the lateral protrusions is such that both ends are Separating the rising piece from the upper surface piece The fold line is continuous with the cut line, and the cut line is spaced apart from the cut line. Separating the rising piece from the upper surface piece The fold lines are broken.

[0011] The rising piece is provided with an upper protruding piece having an upper protruding portion that protrudes above the upper surface piece, and an opening is formed in the upper protruding portion at the same height as the upper surface piece. The lateral protruding portion passes through the opening and protrudes to the side of the rising piece.

[0012] The fold lines may be formed by break lines, and the shock-absorbing portion may be reinforced by being provided with a pressed crease. Effect of the Invention

[0013] The packaging box with cushioning function of the present invention has a cushioning piece or a raised bottom plate that is separate from the bottom plate of the box body, and an extension piece that is separate from the bottom plate, so that external impacts are less likely to be transmitted from the bottom of the box body, and even if the top piece is damaged, the extension piece can absorb the external impact, providing high cushioning properties. As a result, even when multiple easily damaged items are stored, the box has a high cushioning function and can reliably protect the items. Moreover, the structure is simple and easy to assemble. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a vertical cross-sectional view of one embodiment of a packaging box with a cushioning function. [Diagram 2] FIG. 2 is a development view of the cushioning packaging box of this embodiment. [Diagram 3] 1 is a development view seen from the back, illustrating an assembly process for the cushioning packaging box of this embodiment. FIG. [Figure 4] 1 is a development view seen from the back, illustrating an assembly process for the cushioning packaging box of this embodiment. FIG. [Diagram 5] 1 is a vertical cross-sectional view of a cushioning-equipped packaging box according to a first embodiment of the present invention. [Figure 6] 1 is a development view of a cushioning-equipped packaging box according to a first embodiment of the present invention; [Figure 7] FIG. 4 is a vertical cross-sectional view of a cushioning-equipped packaging box according to a second embodiment of the present invention. [Figure 8] FIG. 11 is a development view of a cushioning-equipped packaging box according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The packaging box 10 with a cushioning function of the embodiment shown in FIG. 1 is provided by assembling a box-forming piece 12 formed by punching a paper sheet. FIG. 2 is a development view of the box-forming piece 12 seen from the front, and the box-forming piece 12 is formed by connecting side surfaces 14, 16, 18, and 20 in parallel to each other. The side surfaces 14, 16, 18, and 20 have the same length in the width direction in which they are connected, and the lengths in the connecting direction are such that the side surfaces 14 and 18 are long and almost equal to each other, and the side surfaces 16 and 20 are slightly shorter and almost equal to each other. Furthermore, a glued piece 22 is provided at the side edge of the side surface 14, which is glued to the back surface of the side surface 20. The glued piece 22 is almost the same size as the side surface 20. The glued piece 22 and the side surfaces 14, 16, 18, and 20 are respectively separated by fold lines 24, 26, 28, and 30.

[0016] At one end of the glued piece 22 in a direction perpendicular to the connecting direction with the side surface 14, a buffer section 32 is provided, separated by a fold line 34. The buffer section 32 extends long along an extension line of the side edge 22a of the glued piece 22 opposite the fold line 24, and the portion located on the extension line of the side edge 22a is a straight side edge section 32a that is parallel to the side edge 22a and is slightly closer to the fold line 24 than the side edge section 22a. The buffer section 32 is provided with an extension piece 36, a rising piece 38, an upper surface piece 40, and an upper surface piece glued section 42, which are provided in this order, connected to the fold line 34, and are separated by fold lines 44, 46 parallel to the fold line 34 and a break line 48.

[0017] The extension piece 36 is formed into a deformed trapezoid, with the end portion having the opposite fold line 44 shorter than the end portion on the fold line 34 side, and the side edge portion 36a closer to the fold line 24 opposite to the side edge portion 32a inclined toward the side edge portion 32a as it moves away from the fold line 34. The length in the direction of connection with the glued piece 22 is about half the length of the side surface 14 in the direction of connection with the glued piece 22.

[0018] The end of the rising piece 38 having the opposite fold line 46 is shorter than the end on the fold line 44 side, and the side edge 38a closer to the fold line 24 opposite to the side edge 32a is inclined toward the side edge 32a as it moves away from the fold line 44, forming a deformed trapezoid. The angle of the side edge 38a with respect to the fold line 44 is slightly smaller than the angle of the side edge 36a of the extension piece 36 with respect to the fold line 34. The length of the extension piece 36 in the connecting direction is short, about half that of the extension piece 36.

[0019] The top piece 40 is also formed into a deformed trapezoid, with the end having the opposite break line 48 being slightly shorter than the end on the fold line 46 side, and the side edge 40a close to the fold line 24 opposite the side edge 32a being inclined so as to approach the side edge 32a as it moves away from the fold line 46. The angle of the side edge 40a with respect to the fold line 46 is approximately the same as the angle of the side edge 36a of the extension piece 36 with respect to the fold line 34. The length in the direction of connection with the rising piece 38 is approximately the same as that of the extension piece 36, and is approximately half the length of the side surface 14 in the direction of connection with the glued piece 22.

[0020] The upper surface piece glued portion 42 is rectangular, and the side edge 32a and the side edge 40a opposite to the side edge 32a are approximately parallel to each other. The length in the connecting direction with the upper surface piece 40 is approximately the same as those of the extension piece 36 and the upper surface piece 40.

[0021] A U-shaped cut line 45 is provided at the center of the fold line 44, which is convex toward the extension piece 36. The inside part of the cut line 45 becomes a downward protruding part 47 that protrudes flush with the standing piece 38 when the fold line 44 is folded. Both ends of the cut line 45 are continuous with the fold line 44, and the fold line 44 is interrupted between both ends of the cut line 45.

[0022] The upper surface piece 40 is provided with an upward protrusion 50. The upward protrusion 50 is shaped to extend long in a direction perpendicular to the fold line 46, with its base end continuing to the center of the fold line 46 and its tip located in the center of the upper surface piece 40, and the tip formed in a U-shape. The upward protrusion 50 is surrounded by a U-shaped cutting line 52 and separated from the other parts of the upper surface piece 40. Both ends of the cutting line 52 continue to the fold line 46, and the fold line 46 is interrupted between both ends of the cutting line 52. A U-shaped through hole 54 is formed around the periphery of the upper surface piece 40 that is continuous with the tip of the upward protrusion 50.

[0023] The extension piece 36, the rising piece 38, and the top surface piece 40 are reinforced with a pressed crease 56 positioned at a right angle to the fold line 34. The pressed crease 56 is continuous with the fold line 34 and the break line 48, is discontinued around the fold line 44 and near the tip of the upward protrusion 50, and is not continuous with the cut line 45, the cut line 52, or the through hole 54. The pressed crease 56 is provided at a position passing through the center of each of the extension piece 36, the rising piece 38, and the top surface piece 40.

[0024] A rectangular inner upper lid piece 58 is provided at a portion of the side surface 14 adjacent to the end opposite the fold line 34 of the glued piece 22, separated by a fold line 60. An insertion piece 61 is provided at the end opposite the fold line 60 of the inner upper lid piece 58, separated by a fold line 63, to be inserted into the back surface of the side surface 18 to reseal the cushioning-equipped packaging box 10 after it has been opened. A trapezoidal inner lower lid piece 62 that is slightly smaller than the inner upper lid piece 58 is provided at the end opposite the fold line 60, separated by a fold line 64.

[0025] A small rectangular top flap 66 is provided on the portion of side surface 16 adjacent to fold line 60 of side surface 14, separated by fold line 68. A buffer section 70 is provided on the end of side surface 16 opposite fold line 68, separated by fold line 72. Buffer section 70 is provided with a bottom piece 74, a rising piece 76, a top piece 78, and a top piece glued section 80, which are connected to fold line 72, in that order, and are separated by break lines 82, 84 and a fold line 86 that are parallel to fold line 72.

[0026] The end of bottom piece 74 having break line 82 on the opposite side is shorter than the end on the fold line 72 side, and a step is provided at a pair of side edges intersecting fold line 72 to reduce the width. The length of bottom piece 74 in the direction of connection with side surface 16 is slightly shorter than half the length of side surface 14 in the direction of connection with glued piece 22 or side surface 16. It is also shorter than the length of side surface 14 in the direction of connection with glued piece 22 or side surface 16 minus the length of extension piece 36 of buffer section 32 in the direction of connection, and slightly shorter than extension piece 36.

[0027] The rising piece 76, the top piece 78, and the top piece glued portion 80 are rectangular with the same width intersecting the connecting direction, slightly shorter than the end of the bottom piece 74 having the break line 82, and are provided slightly closer to the fold line 28 than the fold line 26. The lengths in the connecting direction are different from each other, and the rising piece 76 is slightly shorter than the bottom piece 74. The top piece 78 is almost the same as the bottom piece 74, and shorter than the top piece 40 of the buffer section 32. And, it is slightly shorter than the length of the side surface 14 in the connecting direction with the glued piece 22 or the side surface 16 minus the length of the top piece 40 of the buffer section 32 in the connecting direction. The top piece glued portion 80 is slightly longer than the top piece 78, and is almost the same as the top piece glued portion 42 of the buffer section 32. The entire length of the buffer section 70 is shorter than the entire length of the buffer section 32.

[0028] Bottom piece 74, rising piece 76, and top piece 78 are reinforced with pressed creases 81 positioned at right angles to fold lines 72. Pressed creases 81 are continuous with fold lines 72 and fold lines 86. Pressed creases 81 are provided at positions passing through the centers of bottom piece 74, rising piece 76, and top piece 78.

[0029] A rectangular outer upper lid piece 88 is provided at a portion of the side surface 18 adjacent to the fold line 68 of the side surface 16, separated by a fold line 90, and the outer upper lid piece 88 is approximately the same size as the inner upper lid piece 58. A U-shaped tear line 92 is provided at a portion of the side surface 18 adjacent to the fold line 90. Both ends of the tear line 92 reach the fold line 90 and extend away from each other along the fold line 90. The rectangular portion surrounded by the fold line 90 and the tear line 92 becomes a pressing portion 94 when opening the cushioning-equipped packaging box 10. A rectangular outer lower lid piece 96 is provided at the end of the side surface 18 opposite the fold line 90, separated by a fold line 98, and the outer upper lid piece 96 is slightly larger than the inner lower lid piece 62 and is large enough to cover the inner lower lid piece 62.

[0030] An upper flap 100 having a shape symmetrical to the upper flap 66 is provided at a portion of the side surface 20 adjacent to the fold line 90 of the side surface 18, separated by a fold line 102. A small rectangular lower flap 104 is provided at the end of the side surface 20 opposite the fold line 102, separated by a fold line 106.

[0031] Next, an example of a method for assembling the cushioning packaging box 10 of this embodiment will be described. Note that Fig. 2 shows the front side of the box-body forming piece 12 of the cushioning packaging box 10, and a folding method in which the front surface of the box-body forming piece 12 is convex is called a forward folding, and a folding method in which the back surface is convex is called a reverse folding.

[0032] First, glue 108 is applied to the backside of the top piece glued portions 42, 80, and as shown in Figure 3, the fold line 44 of the cushioning portion 32 and the break line 82 of the cushioning portion 70 are folded forward, and then the glued portion 22 and the backside of the side surface 16 are folded over. As a result, the top piece glued portion 42 is glued to the backside of the glued portion 22 with glue 108, and the top piece glued portion 80 is glued to the backside of the side surface 16 with glue 108. Note that Figure 3 shows the backside of the box-forming piece 12. Next, the fold line 26 is folded forward, glue 110 is applied along the fold line 24 and side edge portion 22a on the front side of the glued portion 22, and the fold line 30 is folded forward. As a result, the back surface of the side surface 20 is glued to the surface of the glued piece 22 with glue 110, resulting in a folded state, and in this state, the cushioning-equipped packaging box 10 folded by the box-body forming piece 12 is shipped to a factory that packages the contents 112, which are merchandise. The contents 112 are glass bottles or the like that contain liquid medicine or the like. The order of gluing and folding may be other than that described above.

[0033] Next, in a factory where the contents 112 are stored and packaged, the fold lines 24, 26, 28, and 30 are folded at 90° each to form a rectangular tube. Next, glue 114 is applied to the back surface of the outer top cover piece 88 along the end opposite to the fold line 90, the top flaps 66 and 100 are folded at 90° along the fold lines 68 and 102, the inner top cover piece 58 is folded at the fold line 60, and the insertion piece 61 is folded at the fold line 63 and inserted into the back surface of the side surface 18. Next, the outer top cover piece 88 is folded at 90° along the fold line 90. As a result, the back surface of the outer top cover piece 88 is glued to the surface of the inner top cover piece 58 with glue 114, and an end surface is formed at one opening.

[0034] Then, two contents 112 are inserted from the other end face. The contents 112 are inserted side by side between the side face 14 and the side face 18, with the upper end of the contents 112 facing the inner upper cover piece 58. Then, the extension piece 36 of the buffer section 32 is folded 90° forward along the fold line 34. Then, the extension piece 36, the rising piece 38, and the upper surface piece 40 are raised from the glued piece 22, rise at approximately right angles to each other, and are assembled into a U-shape. At this time, the upper protrusion 50 is raised from the upper surface piece 40, becomes flush with the rising piece 38, and protrudes above the upper surface piece 40. The upper surface piece 40 is inserted between the pair of contents 112, and becomes a central partition that prevents the contents 112 from colliding with each other. The downward protrusion 47 is raised from the extension piece 36, becomes flush with the rising piece 38, and protrudes below the extension piece 36. The top piece 40 faces the bottom surface of the contained item 112 near the adhesive piece 22.

[0035] Then, at the same time that fold line 34 is folded forward, bottom piece 74 of cushioning section 70 is folded forward at 90° along fold line 72. Then, bottom piece 74, rising piece 76, and top piece 78 are raised from side surface 16, rise at approximately right angles to each other, and are assembled into a U-shape. As a result, top piece 78 faces the bottom surface of stored item 112 located near side surface 16.

[0036] Next, the bottom flap 104 is folded 90° along the fold line 106, glue 116 is applied to the back surface of the outer bottom lid piece 96 along the edge opposite to the fold line 98, the inner bottom lid piece 62 is folded 90° along the fold line 64, and then the outer bottom lid piece 96 is folded 90° along the fold line 98. As a result, the back surface of the outer bottom lid piece 96 is glued to the front surface of the inner bottom lid piece 62 with the glue 116, the other opening of the cylinder is closed, and the bottom 118 of the box body is formed. As shown in FIG. 1, the buffer section 32 and the buffer section 70 are assembled facing each other, and packaging is completed.

[0037] As shown in FIG. 1, the buffer parts 32, 70 are pressed by the bottom part 118 to maintain a three-dimensional shape. The bottom surfaces of the pair of contents 112 are supported by the top piece 40 or the top piece 78 and are spaced apart from the bottom part 118. The length of the top piece 40 of the buffer part 32 in the direction of connection with the rising piece 38 is about half the length of the side surface 14 in the direction of connection with the glued piece 22, and the rising piece 38 continuing with the top piece 40 is located almost at the center of the bottom part 118, and the upper protrusion 50 and the lower protrusion 47 are also located almost at the center of the bottom part 118. The top piece 40 has a size sufficient to cover the bottom surface of one of the contents 112. The top piece 78 of the buffer part 70 is shorter than the top piece 40, and the rising piece 76 continuing with the top piece 78 is spaced apart from the rising piece 38 and is located below the bottom surface of the contents 112 near the side surface 16. The tip 47 a of the downward protrusion 47 abuts against the bottom 118 and holds the extension piece 36 .

[0038] When opening the cushioning packaging box 10, the pushing part 94 is pushed to cut the opening breaking line 92 and open the box. When resealing the box, the insertion piece 61 is inserted into the back surface of the side surface 18 to lock the inner upper lid piece 58 in the closed state.

[0039] According to the cushioning packaging box 10 of this embodiment, it is formed with a small-area box-forming piece 12, has high cushioning function, and can reliably protect and accommodate two contents 112. The assembly method is also simple, and the packaging process is efficient. A small upward protrusion 50 is installed as a central partition between the two contents 112, so they do not collide with each other. The extension piece 36 is spaced from the bottom 118, so that impacts from the bottom 118 are not easily transmitted. The cushioning parts 32, 70 are spaced from each other, and one of the rising pieces 76 supports the bottom surface of the contents 112, so a sufficient cushioning effect can be obtained.

[0040] Next, a first embodiment of the present invention will be described with reference to Fig. 5 and Fig. 6. Here, the same members as those in the above embodiment are given the same reference numerals and the description will be omitted. The cushioning packaging box 120 of this embodiment is provided by assembling box body forming pieces 122 formed by punching a paper sheet.

[0041] The box-forming piece 122 is formed by connecting the side surfaces 14, 16, 18, and 20 in parallel with each other. Furthermore, a glued piece 23 is provided on the side edge of the side surface 20 to be glued to the back surface of the side surface 14. The side surfaces 14, 16, 18, and 20 and the glued piece 23 are separated by fold lines 26, 28, 30, and 31, respectively.

[0042] At one end of side 14 in a direction perpendicular to the connecting direction with side 16, a trapezoidal inner upper cover piece 65 is provided, separated by a fold line 67. At the end of side 14 opposite to fold line 67, an inner lower cover piece 62 having the same shape as inner upper cover piece 65 is provided, separated by a fold line 64.

[0043] At the end of the side surface 16 opposite to the fold line 68, a buffer section 70 is provided, separated by a fold line 72 and connected to the side surface 16. The buffer section 70 is provided with a bottom piece 74, a rising piece 76, a top piece 78, and a top piece gluing section 80, which are connected to the fold line 72 in this order, and are separated by a break line 82 parallel to the fold line 72 and fold lines 124 and 86. At the center of the fold line 124, a U-shaped cutting line 126 is provided, which is convex toward the rising piece 76. The inner part of the cutting line 126 becomes a lateral protrusion 128 that protrudes flush with the top piece 78 when the fold line 124 is folded. The U-shaped corner of the cutting line 126 is formed to protrude slightly toward the rising piece 76.

[0044] Bottom piece 74, rising piece 76, and top piece 78 are reinforced with pressed creases 81 positioned at right angles to fold crease 72. Pressed crease 81 continues to break line 82 and fold crease 86, is discontinued around fold crease 124, and does not continue to cut line 126 and its inner lateral protrusion 128.

[0045] At the end of the side surface 20 opposite the fold line 102, a buffer section 130 is provided, separated by a fold line 132 and connected to the side surface 20. The buffer section 130 is provided with a bottom piece 134, a rising piece 136, a top piece 138, and a top piece glued section 140, which are connected to the fold line 132 in this order, and are separated by break lines 142, 144 and a fold line 146 parallel to the fold line 132. The bottom piece 134 has a shorter end having the opposite break line 142 than the end on the fold line 132 side, and a pair of side edges intersecting the fold line 132 are provided with a step portion with a smaller width. The rising piece 136, the top piece 138, and the top piece glued section 140 are rectangular with the same width intersecting the connecting direction, and are slightly shorter than the end of the bottom piece 134 having the break line 142. The lengths in the connecting direction are different, with bottom piece 134 being slightly shorter than bottom piece 74. Upright piece 136 is short, about half the length of bottom piece 134, and top piece 138 is approximately the same as bottom piece 134 and shorter than top piece 78 of buffer section 70. Top piece glued portion 140 is slightly longer than top piece 138 and approximately the same as top piece glued portion 80 of buffer section 70. The overall length of buffer section 130 is shorter than the overall length of buffer section 70.

[0046] The rising piece 136 and the upper surface piece 138 are reinforced by a pressed crease 148 positioned at a right angle to the fold line 132. The pressed crease 148 is continuous with the break line 142 and the fold line 146. The pressed crease 148 is provided at a position passing through the center of each of the rising piece 136 and the upper surface piece 138.

[0047] Next, an example of a method for assembling the cushioning packaging box 120 of this embodiment will be described. First, glue 108 is applied to the backsides of the upper piece glued portions 80, 140, and the break line 82 of the cushioning portion 70 and the break line 142 of the cushioning portion 130 are folded forward, and then folded over onto the backsides of the side surfaces 16, 20. As a result, the upper piece glued portion 80 is glued to the backside of the side surface 16 with the glue 108, and the upper piece glued portion 140 is glued to the backside of the side surface 20 with the glue 108. Next, the fold line 30 is folded forward, glue 110 is applied to the front side of the glued piece 23, and the fold line 26 is folded forward. As a result, the backside of the side surface 14 is glued to the front side of the glued piece 23 with the glue 110, resulting in a folded state.

[0048] Next, in a factory where the contents 112 are stored and packaged, the fold lines 26, 28, 30, 31 are each folded at 90° to form a rectangular tube. Next, glue 114 is applied to the back surface of the outer top cover piece 88 along the end opposite to the fold line 90, the top flaps 66, 100 are folded at 90° along the fold lines 68, 102, the inner top cover piece 65 is folded at the fold line 67, and then the outer top cover piece 88 is folded at 90° along the fold line 90. As a result, the back surface of the outer top cover piece 88 is glued to the surface of the inner top cover piece 65 with the glue 114, and an end face is formed at one opening.

[0049] Then, two items 112 are placed into the other end, and bottom piece 134 of buffer section 130 is folded 90° along fold line 132. Then, bottom piece 134, rising piece 136, and top piece 138 are raised from side surface 20, rise at approximately right angles to each other, and assembled into a U-shape. As a result, top piece 138 faces the bottom surface of item 112 located near side surface 20.

[0050] Next, the fold line 132 is folded forward, and at the same time, the bottom piece 74 of the buffer section 70 is folded forward at 90° along the fold line 72. Then, the bottom piece 74, the rising piece 76, and the top piece 78 are raised from the side surface 16, rise at approximately right angles to each other, and are assembled into a U-shape. As a result, the top piece 78 faces the bottom surface of the contents 112 located near the side surface 16. At this time, the lateral protrusion 128 is raised from the rising piece 76, becomes flush with the top piece 78, and protrudes to the side of the rising piece 76. The tip 128a of the lateral protrusion 128 faces the side surface of the contents 112 located near the side surface 20, and is separated from the contents 112 located near the side surface 16, serving as a spacer to prevent the contents 112 from colliding with each other. Since the rising piece 136 of the buffer section 130 is shorter than the rising piece 76 of the buffer section 70, the upper surface piece 138 is located lower than the upper surface piece 78, and the lateral protrusion 128 faces the side of the lower stored item 112.

[0051] Next, glue 116 is applied to the back surface of the outer bottom lid piece 96 along the edge opposite to the fold line 98, the inner bottom lid piece 62 is folded 90° along the fold line 64, and then the outer bottom lid piece 96 is folded 90° along the fold line 98. As a result, the back surface of the outer bottom lid piece 96 is glued to the front surface of the inner bottom lid piece 62 with glue 116, the other opening of the cylinder is closed, and a bottom 118 of the box is formed. As shown in FIG. 5, the buffer section 70 and the buffer section 130 are assembled facing each other, and packaging is completed.

[0052] 5, the buffer parts 130, 70 are pressed down by the bottom part 118 to maintain a three-dimensional shape. The pair of contents 112 have their bottom surfaces supported by the upper surface piece 78 or the upper surface piece 138 and are spaced apart from the bottom part 118. The upper surface piece 138 is shorter than the upper surface piece 78, and the rising piece 136 continuous with the upper surface piece 138 is spaced apart from the rising piece 76 continuous with the upper surface piece 78 and is located below the contents 112 near the side surface 20.

[0053] The cushioning packaging box 120 of this embodiment has the same effects as the above embodiment. In particular, the tip 128a of the lateral protrusion 128 faces the side of the contents 112 and serves as a spacer, preventing collisions between the contents 112. When a strong impact is applied to the cushioning packaging box 120, the upper part of the contents 112 near the side surface 20 tilts and hits the other contents 112 as shown by the two-dot chain line in Fig. 5, but since the upper part is fitted with a cap made of resin or soft metal and hits the cap part, the glass bottle body is not damaged.

[0054] Next, a second embodiment of the present invention will be described with reference to Figs. 7 and 8. Here, the same members as those in the above embodiment are given the same reference numerals and the description will be omitted. The cushioning packaging box 150 of this embodiment is provided by assembling box body forming pieces 152 formed by punching a paper sheet.

[0055] At the end of side surface 16 opposite fold line 68, buffer section 70 is provided adjacent to and separated by fold line 72. Buffer section 70 is provided with a bottom piece 74, a rising piece 76, a top piece 78, and a top piece glued section 80, which are connected to fold line 72 in that order, and are separated from each other by fold lines 154, 124, and 86 that are parallel to fold line 72.

[0056] A U-shaped cutting line 126 that protrudes toward the rising piece 76 is provided at the center of the fold line 124. The inner part of the cutting line 126 becomes a lateral protrusion 128 that protrudes flush with the upper surface piece 78 when the fold line 124 is folded. The U-shaped corner of the cutting line 126 is formed to protrude slightly toward the rising piece 76.

[0057] Bottom piece 74, rising piece 76, and top piece 78 are reinforced with two pressed creases 81 positioned at right angles to fold line 72. Pressed crease 81 is continuous with fold line 72 and fold line 86, and intersects with fold lines 154 and 124. Pressed crease 81 is provided passing through both sides of the center of bottom piece 74, rising piece 76, and top piece 78.

[0058] An upward protruding piece 156 is provided at a side edge of the rising piece 76 located on the extension of the fold line 26, separated by a break line 158. The upward protruding piece 156 is a deformed rectangle, and has a straight side edge 156a on the opposite side to the break line 158 that is substantially parallel to the break line 158, and one end of the side edge 156a is connected to a straight end 156b that is connected to the intersection of the fold line 154 and the break line 158, and the end 156b is inclined so as to move away from the extension of the fold line 154 as it moves away from the break line 158. An end 156c on the opposite side to the end 156b is formed in a trapezoidal shape that protrudes beyond the extension of the fold line 124, and the portion that protrudes beyond the extension of the fold line 124 becomes an upward protruding portion 159. A rectangular opening 160 is provided at approximately the center of the upward protruding piece 156 , at a position on an extension of the fold line 124 .

[0059] At the end of side surface 20 opposite fold line 102, buffer section 130 is provided adjacent to fold line 132. Buffer section 130 is provided with bottom piece 134, rising piece 136, top piece 138, and top piece glued section 140, which are connected to fold line 132 in that order, and are each separated by fold lines 143, 145, and 146 that are parallel to fold line 132.

[0060] Bottom piece 134, rising piece 136, and top piece 138 are reinforced with two pressed creases 149 positioned at right angles to fold line 132. Pressed crease 149 is continuous with fold line 132 and fold line 146, and intersects with fold lines 143 and 145. Pressed crease 149 is provided passing through both sides of the center of bottom piece 134, rising piece 136, and top piece 138.

[0061] Next, an example of a method for assembling the cushioning packaging box 150 of this embodiment will be described. First, glue 108 is applied to the backsides of the upper piece glued parts 80 and 140, and the fold line 154 of the cushioning part 70 and the fold line 143 of the cushioning part 130 are folded forward and then folded over the backsides of the side surfaces 16 and 20. As a result, the upper piece glued part 80 is glued to the backside of the side surface 16 with the glue 108, and the upper piece glued part 140 is glued to the backside of the side surface 20 with the glue 108. Furthermore, glue 162 is applied to the surface of the upward protruding piece 156, and the break line 158 is folded back and folded over the surface of the rising piece 76. As a result, the upward protruding piece 156 is glued to the surface of the rising piece 76 with the glue 162. Next, the fold line 30 is folded forward, glue 110 is applied to the surface of the glued piece 23, and the fold line 26 is folded forward. As a result, the back surface of the side surface 14 is glued to the surface of the glue piece 23 by the glue 110, resulting in a folded state.

[0062] Next, in a factory where the contents 112 are stored and packaged, the fold lines 26, 28, 30, 31 are each folded at 90° to form a rectangular tube. Next, glue 114 is applied to the back surface of the outer top cover piece 88 along the end opposite to the fold line 90, the top flaps 66, 100 are folded at 90° along the fold lines 68, 102, the inner top cover piece 65 is folded at the fold line 67, and then the outer top cover piece 88 is folded at 90° along the fold line 90. As a result, the back surface of the outer top cover piece 88 is glued to the surface of the inner top cover piece 65 with the glue 114, and an end face is formed at one opening.

[0063] Then, two items 112 are placed into the other end. Then, the bottom piece 134 of the buffer section 130 is folded 90° along the fold line 132. Then, the bottom piece 134, the rising piece 136, and the top piece 138 are raised from the side surface 20, rise at approximately right angles to each other, and are assembled into a U-shape. As a result, the top piece 138 faces the bottom surface of the item 112 close to the side surface 20.

[0064] Then, at the same time that the fold line 132 is folded forward, the bottom piece 74 of the buffer section 70 is folded forward at 90° along the fold line 72. Then, the bottom piece 74, the rising piece 76, and the top piece 78 are raised from the side surface 16, rise at approximately right angles to each other, and are assembled into a U-shape. As a result, the top piece 78 faces the bottom surface of the contents 112 located near the side surface 16. At this time, the lateral protrusion 128 is raised from the rising piece 76, becomes flush with the top piece 78, and protrudes to the side of the rising piece 76. The tip 128a of the lateral protrusion 128 faces the side surface of the contents 112 located near the side surface 20, and is separated from the contents 112 located near the side surface 16, serving as a spacer to prevent the contents 112 from colliding with each other. Since the rising piece 136 of the buffer section 130 is shorter than the rising piece 76 of the buffer section 70, the upper surface piece 138 is located lower than the upper surface piece 78, and the side protrusion 128 faces the side of the contents 112. In addition, the upward protrusion piece 156 is glued to the rising piece 76, and the upward protrusion 159 of the upward protrusion piece 156 is flush with the rising piece 76 and protrudes above the upper surface piece 78. The upward protrusion 159 is inserted between a pair of contents 112 and serves as a central partition to prevent the contents 112 from colliding with each other. The upward protrusion 156 has an opening 160 at a position on an extension line of the fold line 124, so that the side protrusion 128 passes inside the opening 160 and protrudes to the side of the rising piece 76.

[0065] Next, glue 116 is applied to the back surface of outer bottom flap piece 96, inner bottom flap piece 62 is folded 90° along fold line 64, and then outer bottom flap piece 96 is folded 90° along fold line 98. The other opening of the cylinder is closed to form bottom portion 118. As shown in Figure 7, buffer section 70 and buffer section 130 are assembled facing each other, completing the packaging.

[0066] The cushioning packaging box 150 of this embodiment has the same effects as the above-mentioned embodiment. In particular, the side protrusions 128 and the upper protrusions 159 are provided, so that a higher cushioning effect can be obtained.

[0067] The present invention is not limited to the above embodiment, and the shape, size, number, etc. of the top cover piece, bottom cover piece, and each flap can be changed as appropriate. The contents to be placed in the packaging box with a cushioning function can be used for various items other than liquid medicine bottles. The material of the box body forming piece can be freely selected from synthetic resin, synthetic resin and paper laminate, etc., other than paper. The number and length of the fold lines and pressed lines can also be changed as appropriate, and pressed lines may be provided other than in the cushioning section. Either the fold line for folding or the break line can be selected. The width and length of the connecting direction of the extension piece, bottom piece, rising piece, top piece, etc. of the cushioning section may be other than the above embodiment. [Explanation of symbols]

[0068] 10,120,150 Packaging box with buffer function 12,122,152 Box forming piece 14,16,18,20 Side 22,23 Glued piece 32,70,130 Buffer 36 Extension piece 38,76,136 Standing piece 40,78,138 Top piece 34,44,46,72,124,132 Fold lines 42,80,140 Top surface glued part 45,52,126 cutting line 47 Downward protrusion 50,159 Upper protrusion 74,134 Bottom piece 112 Contents 118 Bottom 128 Lateral projection 156 Upper protruding piece

Claims

1. The box is made of a single box-forming piece, and includes a side surface assembled to the cylinder, a glued piece glued to the side surface to maintain the shape of the cylinder, a bottom portion closing the lower opening of the cylinder, and a pair of buffer portions provided on the inside of the bottom portion and facing each other, the buffer portions being provided adjacent to the side surfaces that are approximately parallel to each other, The buffer portion includes a bottom piece forming the bottom portion, a rising piece that is continuous with an end of the bottom piece opposite the side surface and rises upward, and a top piece that is continuous with the end of the rising piece and a midway point of the height of the side surface, and the top piece holds the bottom surface of the contents placed in the cylinder, The pair of buffer parts have upper surface pieces each having a different height, A packaging box with cushioning function, characterized in that the upper piece has a lateral protrusion that protrudes laterally further than the rising piece, the lateral protrusion is provided on the higher upper piece, and the tip of the lateral protrusion faces above the lower upper piece.

2. The box-forming pieces are provided with side surfaces connected in parallel to each other, and a glued piece is provided on a side surface at one end in the connecting direction of the side surfaces and glued to a side surface at the other end of the side surfaces. The buffer portions are provided via fold lines at the ends of the side surfaces that are approximately parallel to each other and intersect in the connecting direction of the side surfaces and are close to the bottom. The cushioning portion is provided in the order of the bottom piece, the rising piece, and the top piece, each separated by a fold line, and a top piece gluing portion that is glued to the back surface of the side on which the cushioning portion is provided is provided at the end of the top piece via the fold line, The cushioning-equipped packaging box of claim 1, wherein the lateral protrusion is surrounded by a U-shaped cutting line formed on the rising piece, and the cutting line surrounding the lateral protrusion has both ends continuous with the fold line separating the rising piece and the top piece, and the fold line separating the rising piece and the top piece is interrupted between both ends of the cutting line.

3. 3. A packaging box with cushioning function as described in claim 1 or 2, wherein an upward protruding piece having an upward protruding portion protruding above the upper surface piece is superimposed on the rising piece, an opening is formed in the upward protruding portion at the same height as the upper surface piece, and the lateral protruding portion passes through the opening and protrudes to the side of the rising piece.

Images