Packaging box panel body and packaging box

Abstract

To provide a panel body for a packaging box and a packaging box capable of suppressing deformation when dropped at low cost. [Solution] The panel body 1 for a packaging box includes a bottom panel 3, a first folding piece 4, a second folding piece 5, a third folding piece 6, a fourth folding piece 7, a top panel 8, a first folding piece 9, a second folding piece 10, a third folding piece 11, a fourth folding piece 12, a first inner flap 13, a second inner flap 14, a first locking piece 15, a first pressing piece 16 that can be inserted between the first inner flap 13 and the top panel 8, and a second pressing piece 17 that can be inserted between the second inner flap 14 and the top panel 8, and the fifth folding piece 21 has a first insertion hole 18 into which the first locking piece 15 can be inserted.

Description

[Technical Field]

[0001] The present disclosure relates to a panel body for a packaging box made of, for example, cardboard, and a packaging box. [Background technology]

[0002] Conventional packaging box panel bodies and packaging boxes are described, for example, in Patent Documents 1 and 2. Patent Document 1 describes a packaging box that includes two pairs of opposing side plates, flaps for forming a bottom plate connected to the lower ends of the two pairs of opposing side plates, a plate portion for forming an upper lid connected to the upper end of the opposing side plate on the short side of the two pairs of opposing side plates, and a plate portion for forming an upper lid connected to the upper end of the opposing side plate on the long side and connected to the plate portion at the side end.

[0003] In the above-mentioned packaging box, the plate portion for forming the top cover, which is connected to the upper end of the opposing side plate on the short side, has an eight-shaped fold formed from the end of the connecting line with the upper end of the opposing side plate on the short side, and an insertion piece is formed on one plate portion, and an insertion hole for inserting the insertion piece is formed on the other plate portion.

[0004] Patent document 2 describes a packaging box in which a cover plate extends from the upper edge of the rear wall, a cover support plate extends from the upper edge of the front wall, a slit is made in the tip of the cover plate to form a wide-open push-in piece, an insertion piece is connected to the tip of the push-in piece, and protruding pieces are provided on both sides of a through hole cut out from the base end of the cover support plate.

[0005] In the above-mentioned packaging box, the cover plate is placed on the cover receiving plate, and the inserting piece is inserted between the protruding piece and the front wall, thereby preventing the inserting piece from coming out and locking the cover plate. When the pushing piece is pushed in, the inserting piece bends the protruding piece and comes out of the through-hole, thereby unlocking the cover plate. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-268956 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-104378 Summary of the Invention [Problem to be solved by the invention]

[0007] In the above Patent Documents 1 and 2, if a packaging box containing items is dropped due to a collapse of the load or the like, the packaging box may easily deform due to the impact force of the drop, and may not be able to maintain its shape before the drop. Therefore, there has been a demand for a packaging box panel body and a packaging box that can suppress deformation when dropped at low cost. [Means for solving the problem]

[0008] A packaging box panel body according to the present disclosure is a packaging box panel body for forming a substantially rectangular parallelepiped packaging box, and includes a bottom plate, a first bent piece continuing to a first side edge of the bottom plate in a first direction, a second bent piece continuing to a second side edge of the bottom plate in the first direction, a third bent piece continuing to a third side edge of the bottom plate in a second direction perpendicular to the first direction, a fourth bent piece continuing to a fourth side edge of the bottom plate in the second direction, and a fourth bent piece continuing to a fourth side edge of the bottom plate in the first direction. a top panel connected to the fifth side of the second bent piece in the second direction; a first folded piece connected to the sixth side of the first bent piece in the second direction and the seventh side of the third bent piece in the first direction; a second folded piece connected to the eighth side of the first bent piece in the second direction and the ninth side of the fourth bent piece in the first direction; and a tenth side of the second bent piece in the second direction and the tenth side of the third bent piece in the first direction. a third folded piece connected to the 11th side edge, a fourth folded piece connected to the 12th side edge of the second folded piece in the first direction and the 13th side edge of the fourth folded piece in the first direction, a first inner flap connected to the 14th side edge of the third folded piece in the second direction, a second inner flap connected to the 15th side edge of the fourth folded piece in the second direction, a first locking piece connected to the 16th side edge of the top panel in the first direction, and a second inner flap connected to the 17th side edge of the top panel in the first direction. and a first pressing piece connected to the 17th side edge of the third folding piece in the first direction and insertable between the first inner flap and the top panel, and a second pressing piece connected to the 18th side edge of the fourth folding piece in the first direction and insertable between the second inner flap and the top panel, wherein the first folding piece extends in the second direction along the 19th side edge of the first folding piece in the first direction and has a first insertion hole into which the first locking piece can be inserted.

[0009] The packaging box according to the present disclosure is a packaging box that uses the packaging box panel, wherein the first folding piece and the second folding piece face each other, the third folding piece and the fourth folding piece face each other, the bottom panel and the top panel face each other, the first folding piece, the second folding piece, the third folding piece, and the fourth folding piece are positioned close to each other, the first pressing piece is positioned between the first inner flap and the top panel, the second pressing piece is positioned between the second inner flap and the top panel, the second locking piece is positioned between the top panel and the first folding piece, and the first locking piece is positioned in the first insertion hole. [Effects of the Invention]

[0010] According to the packaging box panel body and packaging box of the present disclosure, it is possible to provide a packaging box panel body and packaging box that can suppress deformation when dropped at low cost. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a development view showing a panel body for a packaging box according to an embodiment of the present disclosure. FIG. [Figure 2] 2 is a perspective view showing a packaging box assembled from the packaging box panel body shown in FIG. 1. FIG. [Figure 3] FIG. 2 is a perspective view showing a state in which items are stored in the packaging box. [Figure 4] FIG. 10 is a perspective view showing a part of the second folded side of the packaging box. [Figure 5] FIG. 2 is a perspective view showing a part of a first folded side of the packaging box. [Figure 6A] FIG. 2 is an enlarged development view of a portion of the first folded side of the panel body for a packaging box. [Figure 6B] FIG. 2 is a cross-sectional view of the first folded side of the packaging box. [Figure 7] 10 is an enlarged development view of a portion of the third fold-in piece and the fourth fold-in piece of the panel body for a packaging box. FIG. [Figure 8] 10 is a perspective view illustrating an insertion operation of a first locking piece into a first insertion hole. FIG. [Figure 9]10 is a perspective view illustrating an insertion operation of a second locking piece into a second insertion hole. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of a panel body for a packaging box and a packaging box according to the present disclosure will be described with reference to the drawings. The drawings referred to below are schematic, and the dimensional ratios and the like shown in the drawings are not necessarily accurately depicted. For convenience, a Cartesian coordinate system XYZ is assumed in this specification. The X-axis direction is the left-right direction in FIG. 1 and is also referred to as the first direction X. The Y-axis direction is the up-down direction in FIG. 1 and is also referred to as the second direction Y. The Z-axis direction is the direction perpendicular to the plane of FIG. 1 and is also referred to as the third direction Z. In this embodiment, a case will be described in which a corrugated cardboard with the first direction X as the longitudinal grain and the second direction Y as the transverse grain is used.

[0013] FIG. 1 is a development view showing a packaging box panel body 1 according to an embodiment of the present disclosure. FIG. 2 is a perspective view showing a packaging box 2 assembled from the packaging box panel body 1 shown in FIG. 1 . FIG. 3 is a perspective view showing a state in which an item M is contained in the packaging box 2. The dashed lines in FIG. 1 indicate creases formed by linearly pressing the corrugations to fold the cardboard. The creases include two types of creases: valley folds and mountain folds, depending on the folding direction of the cardboard. They also include scores perpendicular to the corrugations and creases parallel to the corrugations. The scores are processed to form fold creases (also called press creases), and the creases are processed to form lead creases with regular intervals. However, the scores, i.e., the pressing pieces 17-20 described below, are processed to form lead creases to reduce the repulsive force on the top panel 8 and make it easier to close the top panel 8. The packaging box panel body 1 of this embodiment is made of cardboard and is a blank for forming an assembly-type packaging box 2.

[0014] The packaging box panel body 1 of this embodiment is a packaging box panel body for constructing a packaging box 2 having a substantially rectangular parallelepiped shape, and includes a bottom panel 3, a first folded piece 4 connected via a valley fold line L1 which is a first side edge of the bottom panel 3 in a first direction X, a second folded piece 5 connected via a valley fold line L2 which is a second side edge of the bottom panel 3 in the first direction X, a third folded piece 6 connected via a valley fold line L3 which is a third side edge of the bottom panel 3 in a second direction Y perpendicular to the first direction X, a fourth folded piece 7 connected via a valley fold line L4 which is a fourth side edge of the bottom panel 3 in the second direction Y, and a top panel 8 connected via a valley fold line L5 which is a fifth side edge of the second folded piece 5 in the first direction X.

[0015] The packaging box panel body 1 further includes a first fold piece 9 that is connected to the first fold piece 4 at a valley fold line L6, which is the sixth side edge in the second direction Y, and a second fold piece 10 that is connected to the first fold piece 4 at a valley fold line L7, which is the seventh side edge of the third fold piece 6 in the first direction X, and a second fold piece 10 that is connected to the first fold piece 4 at a valley fold line L8, which is the eighth side edge of the first fold piece 4 in the second direction Y, and a second fold piece 10 that is connected to the fourth fold piece 7 at a valley fold line L9, which is the ninth side edge of the fourth fold piece 7 in the first direction X. a third folded piece 11 connected in the second direction Y via a valley fold line L10 which is the eighth side edge of the second folded piece 5 and connected in the first direction X via a valley fold line L11 which is the eleventh side edge of the third folded piece 6; and a fourth folded piece 12 connected in the first direction X via a valley fold line L12 which is the twelfth side edge of the second folded piece 5 and connected in the first direction X via a valley fold line L13 which is the thirteenth side edge of the fourth folded piece 7.

[0016] The packaging box panel body 1 further includes a first inner flap 13 connected in the second direction Y via a valley fold line L14 that is the fourteenth side edge of the third folded piece 6, a second inner flap 14 connected in the second direction Y via a valley fold line L15 that is the fifteenth side edge of the fourth folded piece 7, a first locking piece 15 connected in the first direction X via a valley fold line L16 that is the sixteenth side edge of the top panel 8, a first pressing piece 16 connected in the first direction X via a valley fold line L17 that is the seventeenth side edge of the third folded piece 11 and insertable between the first inner flap 13 and the top panel 8, and a second pressing piece 17 connected in the first direction X via a valley fold line L18 that is the eighteenth side edge of the fourth folded piece 12 and insertable between the second inner flap 14 and the top panel 8. A finger hole 28 is formed in the first locking piece 15.

[0017] The first folding piece 4 extends in the second direction Y along a valley fold line L19, which is the nineteenth side edge of the first folding piece 4 in the first direction X, and has a first insertion hole 18 into which the first locking piece 15 is inserted. The first folding piece 9, the second folding piece 10, the third folding piece 11, and the fourth folding piece 12 each have mountain fold lines L22, L23, L24, and L25, respectively, which allow the first folding piece 9, the second folding piece 10, the third folding piece 11, and the fourth folding piece 12 to overlap in half and fold into the internal space of the packaging box 2.

[0018] The packaging box panel body 1 further includes a third pressing piece 19 that is connected to the first folding piece 9 via a valley fold line L20, which is the 20th side edge of the first folding piece 9 in the first direction X, and that can be inserted between the first folding piece 9 and the top panel 8, and a fourth pressing piece 20 that is connected to the second folding piece 10 via a valley fold line L21, which is the 21st side edge of the second folding piece 10 in the first direction X, and that can be inserted between the second folding piece 10 and the top panel 8.

[0019] The packaging box panel body 1 further includes a fifth folding piece 21 that is connected to the first folding piece 4 via a valley fold line L19 that is a 19th side edge of the first folding piece 4 in the first direction X and that can be inserted between the bottom panel 3 and the top panel 8, and a second locking piece 22 that is formed on the first folding piece 4 and the fifth folding piece 21. A finger hole 29 is formed in the second locking piece 22.

[0020] The first locking piece 15 extends in the second direction Y along a valley fold line L16 that is the sixteenth side of the first locking piece 15 in the first direction X, and has a second insertion hole 23 into which the second locking piece 22 can be inserted.

[0021] The first folding piece 9 has a first cutout piece 24 extending perpendicular to the mountain fold line L22 at a corner where a valley fold line L20, which is the 20th side edge to which the third pressing piece 19 in the first direction X is connected, intersects with a side edge opposite to the valley fold line L6, which is the sixth side edge to which the first folding piece 4 in the second direction Y is connected. The second folding piece 10 has a second cutout piece 25 extending perpendicular to the mountain fold line L23 at a corner where a valley fold line L21, which is the 21st side edge to which the fourth pressing piece 20 in the first direction X is connected, intersects with a side edge opposite to the valley fold line L8, which is the eighth side edge to which the first folding piece 4 is connected in the second direction Y.

[0022] The third fold piece 11 has a substantially V-shaped third cutout piece 26 extending from the intersection of the two valley fold lines L10, L11 in the direction of an extension of the mountain fold line L24 on the bisector. The fourth fold piece 12 has a substantially V-shaped fourth cutout piece 27 extending from the intersection of the two valley fold lines L12, L13 in the direction of an extension of the mountain fold line L25 on the bisector.

[0023] Fig. 4 is a perspective view showing a part of the second folding piece 5 side of the packaging box 2. For ease of illustration, Fig. 4 shows the top panel 8 in an open state. In the packaging box 2 obtained by assembling the packaging box panel body 1 using a box making machine or the like, as shown in Fig. 4, the third folding piece 11 is positioned along the inner surface of the second folding piece 5 when folded in half, and the fourth folding piece 12 is positioned along the inner surface of the second folding piece 5 when folded in half.

[0024] As described above, when the packaging box panel body 1 is assembled into the packaging box 2, the first pressing piece 16 is folded at the valley fold line L17 and folded onto the third folding piece 11 via the first inner flap 13, and the second pressing piece 17 is folded at the valley fold line L18 onto the fourth folding piece 12 via the second inner flap 14. Therefore, by folding the top panel 8 at the valley fold line L5 and inserting the first locking piece 15 into the first insertion hole 18, the first pressing piece 16 and the second pressing piece 17 are held down by the top panel 8, and further, by holding down the first inner flap 13 and the second inner flap 14, deformation of the third folding piece 6 and the fourth folding piece 7 is suppressed, and the packaging box 2 can be provided with a deformation prevention function. Furthermore, by using a structure in which the packing box 2 is pressed onto the third folding piece 11 and the fourth folding piece 12 via the first inner flap 13 and the second inner flap 14, even if an impact force due to a fall acts on the packing box 2, the resistance of the third folding piece 12 and the fourth folding piece 12 that are folded in half reduces the effect of the impact force on the third folding piece 6 and the fourth folding piece 7, thereby suppressing deformation of the third folding piece 6 and the fourth folding piece 7 and therefore suppressing deformation of the packing box 2.

[0025] FIG. 5 is a perspective view showing a portion of the packaging box 2 on the side of the first folding piece 4. For ease of illustration, FIG. 5 shows the top panel 8 and folding piece 21 in an open state. When the packaging box panel body 1 is assembled into the packaging box 2, the first folding piece 9 is folded in half along the mountain fold line L22 and is positioned along the first folding piece 4, and the second folding piece 10 is folded in half along the mountain fold line L23 and is positioned along the first folding piece 4. At this time, the third pressing piece 19 is folded directly onto the first folding piece 9 without contacting the first inner flap 13. Furthermore, the fourth pressing piece 20 is folded directly onto the second folding piece 10 without contacting the second inner flap 14. The first folding piece 8 and the second folding piece 10 do not come into contact with the first inner flap 13 and the second inner flap 14 because the shapes of the first inner flap 13 and the second inner flap 14 are inclined toward the first folding piece 4 and the second folding piece 5, respectively. The first cutout piece 24 and the second cutout piece 25 can improve the ease of folding the first folding piece 9 and the second folding piece 10. The first folding piece 9 and the second folding piece 10 may be folded via the first inner flap 13 and the second inner flap 14, respectively. After the top panel 8 is folded at the valley fold line L5 and the first locking piece 15 is inserted into the first insertion hole 18, the second locking piece 22 is inserted into the second insertion hole 23. Therefore, the third pressing piece 19 presses the first fold-in piece 9 at approximately the same height as the first inner flap 13 in the third direction Z, and the fourth pressing piece 20 presses the second fold-in piece 10 at approximately the same height as the first inner flap 13 in the third direction Z.

[0026] This reduces the pushing-up force exerted by the third pressing piece 19 and the fourth pressing piece 20 of the top panel 8, and when the top panel 8 is folded inward at the valley fold line L5, the first locking piece 15 is prevented from being pushed upward in the third direction Z from the first insertion hole 18, allowing the first locking piece 15 to be smoothly inserted into the first insertion hole 18 and the second locking piece 22 to be smoothly inserted into the second insertion hole 23. Furthermore, even if an impact force acts on any of the six corners of the packaging box 2 due to the drop of the packaging box 2, the impact force is dispersed to the first folding piece 9 by the third pressing piece 19 and is also dispersed to the second folding piece 10 by the fourth pressing piece 20, so deformation of the first folding piece 4 to the fourth folding piece 7 is suppressed, and deformation of the packaging box 2 is suppressed.

[0027] In other embodiments, the first pressing piece 16, the second pressing piece 17, the third pressing piece 19, and the fourth pressing piece 20 may be configured to press the third folding piece 11, the fourth folding piece 12, the first folding piece 9, and the second folding piece 10, respectively.

[0028] 6A is an enlarged development view of a portion of the first folding piece 4 side of the panel body 1 for a packaging box, and FIG. 6B is a cross-sectional view of the first folding piece 4 side of the packaging box 2. FIG. 7 is an enlarged development view of a portion of the panel body 1 for a packaging box on the third folding piece 11 and fourth folding piece 12 side. Since a first cutout piece 24 is formed in the first folding piece 9 and a second cutout piece 25 is formed in the second folding piece 10, when the panel body 1 for a packaging box is automatically assembled into the packaging box 2 using a box making machine or the like, the first folding piece 9 can be mountain-folded along the mountain fold line L22 and the second folding piece 10 can be mountain-folded along the mountain fold line L23, improving the positioning accuracy of the folding positions in the folding operation of the first folding piece 9 and the second folding piece 10, and the first folding piece 9 and the second folding piece 10 can be easily and accurately folded in half.

[0029] 8 is a perspective view illustrating the insertion operation of first locking piece 15 into first insertion hole 18, and FIG. 9 is a perspective view illustrating the insertion operation of second locking piece 22 into second insertion hole 23. Since third fold piece 11 has third cutout piece 24 and fourth fold piece 12 has fourth cutout piece 25, when packaging box panel body 1 is automatically assembling into packaging box 2 using a box making machine or the like, third fold piece 11 can be mountain-folded along mountain fold line L24 and fourth fold piece 12 can be mountain-folded along mountain fold line L25, improving the positioning accuracy of the folding positions in the folding operation of third fold piece 11 and fourth fold piece 12, and third fold piece 11 and fourth fold piece 12 can be easily and accurately folded in half.

[0030] When the above-described packaging box panel body 1 is assembled into the packaging box 2 by a box-making machine or the like, the first folded piece 4 and the second folded piece 5 face each other, the third folded piece 6 and the fourth folded piece 7 face each other, and the bottom panel 3 and the top panel 8 face each other. The first folded piece 9, the second folded piece 10, the third folded piece 11, and the fourth folded piece 12 are positioned close to each other, the first pressing piece 16 is positioned between the first inner flap 13 and the top panel 8, the second pressing piece 17 is positioned between the second inner flap 14 and the top panel 8, the second locking piece 22 is positioned between the top panel 8 and the first folded piece 4, and the first locking piece 15 is positioned in the first insertion hole 18.

[0031] Such a packaging box 2 contains and packs items M, such as a plurality of ceramic parts 30 arranged in multiple rows on a resin tray 31. The packaging boxes 2 containing the items M are stored stacked in multiple layers in a storage area such as a factory. Even if such a packaging box 2 is accidentally dropped, deformation of the packaging box 2 is suppressed as described above, thereby preventing damage to the items M contained in the packaging box 2. The parts 30 are not limited to ceramic parts, but may also be various other electrical and mechanical parts. Furthermore, the parts 30 are not limited to those housed in trays 31, but may be packaged in a resin film package or directly packaged.

[0032] The forming base paper used as the base paper for the aforementioned corrugated board may optionally have a resin layer on at least one side to impart decorative properties such as gloss, water resistance, and oil resistance. Methods for providing the resin layer include impregnation, coating, and film lamination. Examples of resins for the resin layer of the forming base paper include polyolefin resins such as polyethylene, polypropylene, and polymethylpentene; saturated polyester resins such as polyethylene terephthalate and polybutylene terephthalate; polyamide resins; ethylene-vinyl alcohol copolymers; polystyrene resins; and polyacrylonitrile resins. Furthermore, water-resistant or oil-resistant resins may also be used as the resin. Examples of water-resistant resins include polyvinyl alcohol resins, polyacrylamides, natural rubber latexes, synthetic rubber latexes such as SBR, NBR, and polychloroprene, polyvinyl acetate, acrylic resins, polyvinyl chloride, polyvinylidene chloride, and resin latexes of copolymers thereof.

[0033] Examples of the oil-resistant resin include medium-density or high-density polyethylene resin, cellulose resin, fluorine-based resin, nylon, polycarbonate, polypropylene, polyester resin, polyvinyl chloride, polyvinylidene chloride, polystyrene, ionomer, polyimide, and polyurethane resin.

[0034] As the material for the packaging box panel body according to the present disclosure, any of single-faced corrugated cardboard, double-faced corrugated cardboard, double-sided corrugated cardboard, and triple-sided corrugated cardboard with a layer structure may be used, or any of single-faced corrugated cardboard, double-sided corrugated cardboard, double-sided corrugated cardboard, and triple-sided corrugated cardboard with a layer structure other than single-faced corrugated cardboard, double-sided corrugated cardboard, and triple-sided corrugated cardboard. Furthermore, any of A-flute, B-flute, and AB-flute corrugation types may be used, or any of A-flute, B-flute, and AB-flute configurations may be used.

[0035] In another embodiment, the first pressing piece 16 may be located on the side edge of the third folding piece 11 in the second direction Y, the second pressing piece 17 may be located on the side edge of the fourth folding piece 12 in the second direction Y, the third pushing piece 19 may be located on the side edge of the first folding piece 9 in the second direction Y, and the fourth pushing piece 20 may be located on the side edge of the second folding piece 10 in the second direction Y.

[0036] The present disclosure can be implemented with the following configurations (1) to (5).

[0037] (1) A packing box panel body for forming a substantially rectangular parallelepiped packing box, A bottom plate; a first bent piece connected to a first side edge of the bottom panel in a first direction; a second bent piece connected to a second side edge of the bottom plate in the first direction; a third bent piece extending in a second direction perpendicular to the first direction and continuing to a third side edge of the bottom panel; a fourth bent piece connected to a fourth side edge of the bottom panel in the second direction; a top panel connected to a fifth side edge of the second bent piece in the first direction; a first folded piece connected to a sixth side edge of the first bent piece in the second direction and a seventh side edge of the third bent piece in the first direction; a second folded piece connected to an eighth side edge of the first folded piece in the second direction and a ninth side edge of the fourth folded piece in the first direction; a third folded piece connected to a tenth side edge of the second folded piece in the second direction and an eleventh side edge of the third folded piece in the first direction; a fourth folded piece connected to a twelfth side edge of the second folded piece in the first direction and a thirteenth side edge of the fourth folded piece in the first direction; a first inner flap connected to a fourteenth side edge of the third folded piece in the second direction; a second inner flap connected to a fifteenth side edge of the fourth folded piece in the second direction; a first locking piece connected to a sixteenth side edge of the top panel in the first direction; a first pressing piece that is connected to a seventeenth side edge of the third fold-in piece in the first direction and that can be inserted between the first inner flap and the top panel; a second pressing piece connected to an eighteenth side edge of the fourth fold-in piece in the first direction and insertable between the second inner flap and the top panel; The fifth bending piece extends in the second direction along the nineteenth side edge of the first bending piece in the first direction, and has a first insertion hole positioned so that the first lock piece can be inserted. A panel body for a packaging box.

[0038] (2) a third pressing piece connected to the twentieth side edge of the first folding piece in the first direction and insertable between the first folding piece and the top panel; The panel body for a packaging box described in (1) above further includes a fourth pressing piece that is connected to the 21st side edge of the second fold piece in the first direction and can be inserted between the second fold piece and the top panel.

[0039] (3) A second locking piece formed on the first bent piece and the fifth bent piece, The first locking piece has a second insertion hole extending in the second direction along the sixteenth side edge of the first locking piece in the first direction, into which the second locking piece can be inserted. The panel body for a packaging box described in (1) or (2) above.

[0040] (4) The first folding piece has a first cutout piece extending in a direction intersecting the 20th side edge to which the third pressing piece in the first direction is connected and the side edge opposite the 6th side edge to which the first folding piece in the second direction is connected, in the panel body for a packaging box described in (2) above.

[0041] (5) The second folding piece has a second cutout piece extending in a direction intersecting the 21st side edge to which the fourth pressing piece in the first direction is connected and the side edge opposite the 8th side edge to which the first folding piece in the second direction is connected, in the panel body for a packaging box described in (2) above. (6) A packaging box using the packaging box panel according to any one of (1) to (4) above, the first bent piece and the second bent piece face each other, the third bent piece and the fourth bent piece face each other, and the bottom panel and the top panel face each other; the first fold piece, the second fold piece, the third fold piece, and the fourth fold piece are positioned close to each other; The first pressing piece is located between the first inner flap and the top panel, and the second pressing piece is located between the second inner flap and the top panel, The second locking piece is positioned between the top panel and the first bent piece, and the first locking piece is positioned in the first insertion hole.

[0042] Although the embodiments of the present disclosure have been described in detail above, the present disclosure is not limited to the above-described embodiments, and various modifications and improvements are possible within the scope of the gist of the present disclosure. It goes without saying that all or part of the components constituting each of the above-described embodiments can be combined as appropriate within the scope of not contradicting each other. [Explanation of symbols]

[0043] 1. Packaging box panel 2 packing boxes 3 Bottom plate 4 First bent piece 5 Second bent piece 6 Third bent piece 7 Fourth bent piece 8 Top plate 9 First fold-out piece 10 Second fold-out piece 11 Third fold-out piece 12 Fourth fold-out piece 13 First inner flap 14 Second inner flap 15 First lock piece 16 First presser foot 17 Second presser foot 18 First insertion hole 19 Third presser foot 20 Fourth presser foot 21 Fifth bending piece 22 Second lock piece 23 Second insertion hole 24 1st notch piece 25 2nd notch piece 26 Third notch piece 27 4th notch piece L1~L21 Valley fold lines L22~L25 Mountain fold line 30 Ceramic parts 31 Tray M Storage

Claims

1. A packing box panel body for constituting a substantially rectangular parallelepiped packing box, A bottom plate; a first bent piece connected to a first side edge of the bottom panel in a first direction; a second bent piece connected to a second side edge of the bottom plate in the first direction; a third bent piece extending in a second direction perpendicular to the first direction and connected to a third side edge of the bottom plate; a fourth bent piece connected to a fourth side edge of the bottom panel in the second direction; a top panel connected to a fifth side edge of the second bent piece in the first direction; a first folded piece connected to a sixth side edge of the first bent piece in the second direction and a seventh side edge of the third bent piece in the first direction; a second folded piece connected to an eighth side edge of the first folded piece in the second direction and a ninth side edge of the fourth folded piece in the first direction; a third folded piece connected to a tenth side edge of the second folded piece in the second direction and an eleventh side edge of the third folded piece in the first direction; a fourth folded piece connected to a twelfth side edge of the second folded piece in the first direction and a thirteenth side edge of the fourth folded piece in the first direction; a first inner flap connected to a fourteenth side edge of the third folded piece in the second direction; a second inner flap connected to a fifteenth side edge of the fourth folded piece in the second direction; a first locking piece connected to a sixteenth side edge of the top panel in the first direction; a first pressing piece connected to a seventeenth side edge of the third fold-in piece in the first direction and insertable between the first inner flap and the top panel; a second pressing piece connected to an eighteenth side edge of the fourth fold-in piece in the first direction and insertable between the second inner flap and the top panel, The fifth bent piece extends in the second direction along a nineteenth side edge of the first bent piece in the first direction, and has a first insertion hole into which the first lock piece can be inserted.

2. a third pressing piece connected to a twentieth side edge of the first fold-out piece in the first direction and insertable between the first fold-out piece and the top panel; 2. The panel body for a packaging box according to claim 1, further comprising: a fourth pressing piece connected to a twenty-first side edge of the second fold piece in the first direction and insertable between the second fold piece and the top panel.

3. a second locking piece formed on the first bent piece and the fifth bent piece, 3. The panel body for a packaging box according to claim 1, wherein the first locking piece extends in the second direction along the sixteenth side edge of the first locking piece in the first direction and has a second insertion hole into which the second locking piece can be inserted.

4. 3. The panel body for a packaging box according to claim 2, wherein the first folding piece has a first cutout piece extending in a direction intersecting the 20th side edge to which the third pressing piece in the first direction is connected and the side edge opposite the sixth side edge to which the first folding piece in the second direction is connected.

5. 3. The panel body for a packaging box according to claim 2, wherein the second fold piece has a second cutout piece extending in a direction intersecting the 21st side edge to which the fourth pressing piece in the first direction is connected and the side edge opposite the 8th side edge to which the first folded piece in the second direction is connected.

6. A packaging box using the packaging box panel according to claim 1, the first bent piece and the second bent piece face each other, the third bent piece and the fourth bent piece face each other, and the bottom panel and the top panel face each other, the first fold piece, the second fold piece, the third fold piece, and the fourth fold piece are positioned close to each other; The first pressing piece is located between the first inner flap and the top panel, and the second pressing piece is located between the second inner flap and the top panel, The second locking piece is located between the top panel and the first bent piece, and the first locking piece is located in the first insertion hole.

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