【０００１】
【発明の属する技術分野】
本発明は洗剤、食品等が充填された樹脂製等のボトル、スタンディングパウチ等を梱包するに好適な包装箱に関する。
【０００２】
【従来の技術】
箱を多段積みにしたときに、段積み強度を向上し、かつ横ずれしにくくした包装箱がある（特許文献１）。この包装箱は、箱の４隅部で、側板をアングル状にして堅牢化することによりその段積み強度を強化し、かつ平面視Ｌ形をなして上段の箱を嵌め込み可能とする嵌め込み部を突出するように設け、上段の箱が前後左右に横ずれしないようにした。
【０００３】
【特許文献１】
実開平5-95833号公報（2頁、図３）
【０００４】
【発明が解決しようとする課題】
▲１▼包装箱が蓋板を備えず、塵埃の侵入を防げない。
▲２▼上段の箱は前後左右の４方に横ずれできず、箱の積降し時に上段の箱を下段の箱の上で滑らせることが全くできず、箱の取扱性が悪い。
【０００５】
▲３▼蓋板を側板の上縁に連設したとしても、箱の４隅部にＬ形嵌め込み部が突出しており、蓋板を閉蓋状態から90度より大きく開蓋できず、蓋板の開蓋性が悪い。
【０００６】
本発明の課題は、蓋付包装箱において、段積み強度を向上するとともに、箱の取扱性と開蓋性を損なわずに段積み状態での横ずれを防止することにある。
【０００７】
【課題を解決するための手段】
請求項１の発明は、側板と、側板の下縁に交差する底板と、側板の上縁に交差する蓋板とを、１枚の基材シートによって連設するように設け、底板と側板と蓋板を折り曲げて箱状に組立てられる包装箱であって、蓋板と底板の一方に、基材シートを折重ねた凸部を設けるとともに、蓋板と底板の他方に上記凸部に嵌合する凹部を設けたものである。
【０００８】
【発明の実施の形態】
（第１実施形態）（図１、図２）
包装箱１０は、段ボールシート等の基材シート等によって構成され、図２に示す展開状態で、前後の側板１１、１２と左右の側板１３、１４と、各側板１１〜１４の下縁に交差する底板２１〜２４と、各側板１１〜１４の上縁に交差する蓋板３１〜３４を、１枚の基材シートによって連設するように設け、側板１１〜１４と底板２１〜２４と蓋板３１〜３４を折曲げて箱状に組立てられる。１５は糊付片である。
【０００９】
包装箱１０は、蓋板３１、３２の片側の端辺に突片４１を張出し状に延在し、この突片４１を蓋板３１、３２の上面に折重ねて（突片４１を２つ折り以上に折って折重ねても可）接着剤で接着、又はそれら突片４１を蓋板３１、３２の上面に設けた切り込み線４２に差し込む等のロック手段で固定化することにより、蓋板３１、３２の上面に凸部４０を形成する。尚、蓋板３３、３４は、蓋板３１、３２の突片４１に対応する部分が切欠かれる。
【００１０】
包装箱１０は、底板２１、２２の片側の端辺内に上記凸部４０に嵌合する凹部５０を形成する。凹部５０は、底板２１、２２の一部に打ち抜き加工を施し、又は上段の箱１０の段積み時にその凸部４０に押圧されて破れるミシン目加工を施す等により形成される。
【００１１】
包装箱１０を図１に示す如くに段積みしたとき、下段の箱１０の蓋板３１、３２の凸部４０に上段の箱１０の底板２１、２２の凹部５０が嵌合するように、各箱１０において、凸部４０と凹部５０を対応配置させる。
【００１２】
包装箱１０に設ける凸部４０を形成するための突片４１は、蓋板３１、３２の両側の端辺、及び先端辺の全３辺のいずれに設けても良いし、外形、サイズも自由である。包装箱１０に設ける凹部５０も、下段の箱１０の凸部４０に嵌合し得るように配置される限り、底板２１、２２の両側の端辺、及び先端辺の全３辺のいずれに設けても良いし、外形、サイズも自由である。
【００１３】
包装箱１０は、側板１１〜１４による胴部を形成した後、側板１１〜１４の下縁に連設している底板２１〜２４を互いに組込んで底部を形成する。そして、ボトル、スタンディングパウチ等の内容物を収容した後、側板１１〜１４の上縁に連設している蓋板３１〜３４を互いに組込んで閉蓋する。
【００１４】
包装箱１０の物流段階、店頭陳列段階では、包装箱１０を段積みする。包装箱１０の店頭陳列段階では、蓋板３１〜３４を切除し、及び／又は側板１１〜１４を一部切欠いて陳列用開口を形成できる。
【００１５】
本実施形態によれば以下の作用がある。
▲１▼包装箱１０が蓋板３１〜３４を備えたから、塵埃の侵入を防止できる。
▲２▼包装箱１０を上下に段積みしたとき、下段の箱１０の蓋板３１、３２の凸部４０に上段の箱１０の底板２１、２２の凹部５０が嵌合し、箱同士の横ずれが防止される。
【００１６】
▲３▼箱同士の横ずれが防止されるから、上段の箱１０のコーナーと下段の箱１０のコーナーを安定的に合致させて箱１０の段積強度の劣化を防止できる。また、箱１０の荷崩れを防止できる。
【００１７】
▲４▼箱同士の横ずれを防止する凸部４０は、基材シートの折重ねによって形成されていてその高さが低いから、箱１０の積み降ろし時に、上段の箱１０を下段の箱１０の上から少し持ち上げるだけで前後左右方向に滑らすことができ、箱１０の取扱性を向上できる。
【００１８】
▲５▼蓋板３１〜３４の開蓋を阻止する部材を備えないから、蓋板３１〜３４は大きく（270度）開蓋でき、開蓋性が良い。
【００１９】
▲６▼蓋板３１、３２の凸部４０は基材シートの折重ねによって簡易に形成できる。
【００２０】
１個の包装箱１０内に設ける凸部４０の個数は１個以上であれば良く、２個以上であれば横ずれ防止作用を向上できる。１個の包装箱１０内に設ける凹部５０の個数は、凸部４０と同数又はより多数とする。凸部４０が奇数個のときには凹部５０を偶数個とし、凸部４０が偶数個のときには凹部５０を同数個とすることにより、上段の箱１０の積み上げ時に、上段の箱１０を下段の箱１０の面上で360度回転させず、180度回転させるだけで凸部４０と凹部５０を嵌合させることができる。
【００２１】
（第２実施形態）（図３、図４）
第２実施形態の包装箱１０が第１実施形態の包装箱１０と異なる点は、凸部４０を形成する突片４１を蓋板３１、３２の先端辺に張り出し状に設け、凹部５０を底板２１、２２の先端辺に設けたことにある。この場合、箱１０の基材シートは突片４１の部分が外方に張り出るが、蓋板３３、３４に突片４１のための切欠きを生じない。
【００２２】
（第３実施形態）（図５）
第３実施形態の包装箱１０が第１実施形態の包装箱１０と異なる点は、凸部４０を形成する突片４１を蓋板３１、３２の片側の端辺内に切込み形成して設け、凹部５０を底板２１、２２の片側の端辺内に設けたことにある。この場合、包装箱１０の基材シートは突片４１の部分が外方に張り出ないし、蓋板３３、３４に突片４１のための切欠きを生じない。
【００２３】
（第４実施形態）（図６、図７）
第４実施形態の包装箱１０が第２実施形態の包装箱１０と異なる点は、１個の箱１０内において、１個の凸部４０と２個の凹部５０を設けたことにある。即ち、凸部４０を構成する突片４１を蓋板３１の先端辺に設け、凹部５０を底板２１、２２の先端辺に設けた。包装箱１０を図６に示す如くに段積みしたとき、上段の箱１０は、下段の箱１０の蓋板３１の凸部４０に、その底板２１の凹部５０又は底板２２の凹部５０のいずれをも嵌合できる。換言すれば、上段の箱１０の積み上げ時に、前述した如く、上段の箱１０を下段の箱１０の面上で360度回転させず、180度回転させるだけで凸部４０と凹部５０を嵌合させることができる。
【００２４】
（第５実施形態）（図８、図９）
第５実施形態の包装箱１０が第１実施形態の包装箱１０と異なる点は、図９に示す如く、側板１１と側板１３の間、側板１３と側板１２の間、側板１２と側板１４の間のそれぞれに、それら側板１１〜１４の上縁に交差する側縁に連接する補強片６１〜６３を介装するとともに、側板１１の上縁に交差する側縁に連設する補強片６４を備える。補強片６４には糊付片６５が連設する。補強片６１〜６４は、それらが連設する側板１１〜１４の側縁の全長に渡って設けられる（補強片６１〜６４の全高は側板１１〜１４の全高と同じ）。
【００２５】
包装箱１０の組立ては、各補強片６１〜６４のそれぞれを２つ折りし（３つ折り以上でも可）、２つ折りした補強片６１、６４（例えば６１Ａと６１Ｂ、６２Ａと６２Ｂ）を接着剤を介して側板１３の外側面に貼着し、２つ折りした補強片６３、６４を接着剤を介して側板１４の外側面に貼着し、包装箱１０の側板１１〜１４を四角枠状につないだ胴部を構成する。
【００２６】
本実施形態によれば、包装箱１０の側板１１〜１４における側縁の全長に渡って設けられる補強片６１〜６４を側板１３、１４の外側面に貼着したことにより、箱強度（高さ方向圧縮強度、横方向曲げ強度）を向上できる。このとき、補強片６１〜６４は折重ね状に平面化され、三角柱状のものでないから、箱１０の内容物収容空間を狭小化させず、包装箱１０の収容効率を低下させない。
【００２７】
（第６実施形態）（図１０、図１１）
包装箱１００は、ラップランド型段ボールケースであり、段ボールシート等の基材シート等によって構成され、図１１に示す展開状態で、蓋板１０１、正面板１０２、底板１０３、背面板１０４を連設し、蓋板１０１の両端辺に外フラップ１１１Ａ、１１１Ｂ、正面板１０２の両端辺に内フラップ１１２Ａ、１１２Ｂ、底板１０３の両端辺に外フラップ１１３Ａ、１１３Ｂ、背面板１０４の両端辺に内フラップ１１４Ａ、１１４Ｂを連設し、蓋板１０１の先端辺に糊付片１１５を連設するように設け、それらを折り曲げて箱状に組立てられる。
【００２８】
包装箱１００は、蓋板１０１の先端辺に、糊付片１１５を切込み形成した突片１２１を連設し、この突片１２１を蓋板１０１の上面に折り重ねて接着剤で接着、又はそれら突片１２１を蓋板１０１の上面に設けた切り込み線１２２に差し込む等のロック手段で固定化することにより、蓋板１０１の上面に凸部１２０を形成する。
【００２９】
包装箱１００は、底板１０３の正面板１０２、背面板１０４のそれぞれに接する両側部に上記凸部１２０に嵌合する２個の凹部１３０、１３０を形成する。凹部１３０は、底板１０３の一部に打ち抜き加工を施し、又は上段の箱１００の段積み時にその凸部１２０に押圧されて破れるミシン目加工を施す等により形成される。
【００３０】
図１０に示す如くの包装箱１００を段積みしたとき、上段の箱１００は、下段の箱１００の蓋板１０１の凸部１２０に、その底板１０３の２個の凹部１３０、１３０のいずれをも嵌合できる。
尚、本発明において、底板に凸部を設け、蓋板に凹部を設けても良い。
【００３１】
【発明の効果】
本発明によれば、蓋付包装箱において、段積み強度を向上するとともに、箱の取扱性と開蓋性を損なわずに段積み状態での横ずれを防止することができる。
【図面の簡単な説明】
【図１】図１は第１実施形態の包装箱の段積み状態を示す模式図である。
【図２】図２は包装箱の展開図である。
【図３】図３は第２実施形態の包装箱の段積み状態を示す模式図である。
【図４】図４は包装箱の展開図である。
【図５】図５は第３実施形態の包装箱の展開図である。
【図６】図６は第４実施形態の包装箱の段積み状態を示す模式図である。
【図７】図７は包装箱の展開図である。
【図８】図８は第５実施形態の包装箱の段積み状態を示す模式図である。
【図９】図９は包装箱の展開図である。
【図１０】図１０は第６実施形態の包装箱を示す模式図である。
【図１１】図１１は包装箱の展開図である。
【符号の説明】
１０ 包装箱
１１〜１４ 側板
２１〜２４ 底板
３１〜３４ 蓋板
４０ 凸部
５０ 凹部
１００ 包装箱
１０１ 蓋板
１０３ 底板
１２０ 凸部
１３０ 凹部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a packaging box suitable for packing a resin-made bottle or a standing pouch filled with a detergent, food or the like.
[0002]
[Prior art]
There is a packaging box in which, when boxes are stacked, the stacking strength is improved and lateral displacement is hardly caused (Patent Document 1). In this packaging box, at the four corners of the box, a side plate is angled to make it rigid, thereby strengthening the stacking strength, and forming an L-shape in plan view so as to be able to fit the upper box. It is provided so as to protrude, so that the upper box does not shift laterally forward, backward, left and right.
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 5-95833 (2 pages, Fig. 3)
[0004]
[Problems to be solved by the invention]
{Circle around (1)} The packaging box does not have a cover plate and cannot prevent dust from entering.
{Circle around (2)} The upper box cannot be shifted to the front, rear, left and right in four directions, and the upper box cannot be slid on the lower box at the time of loading / unloading the boxes, resulting in poor handling of the boxes.
[0005]
(3) Even if the lid plate is connected to the upper edge of the side plate, the L-shaped fitting portions protrude from the four corners of the box, and the lid plate cannot be opened more than 90 degrees from the closed state, and the lid plate cannot be opened. Is not easy to open.
[0006]
It is an object of the present invention to improve the stacking strength of a packaging box with a lid and to prevent lateral displacement in a stacked state without impairing handleability and openability of the box.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 provides a side plate, a bottom plate intersecting the lower edge of the side plate, and a lid plate intersecting the upper edge of the side plate so as to be continuously provided by one base sheet. A packaging box assembled by folding a lid plate into a box shape, wherein one of the lid plate and the bottom plate is provided with a convex portion obtained by folding a base material sheet, and the other of the lid plate and the bottom plate is fitted with the convex portion. In this case, a concave portion is provided.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment) (FIG. 1, FIG. 2)
The packaging box 10 is formed of a base sheet such as a corrugated cardboard sheet, and intersects with the front and rear side plates 11, 12 and the left and right side plates 13, 14 and the lower edge of each side plate 11 to 14 in the unfolded state shown in FIG. Bottom plates 21 to 24, and lid plates 31 to 34 intersecting the upper edges of the side plates 11 to 14 are provided so as to be continuously connected by one base sheet, and the side plates 11 to 14, the bottom plates 21 to 24, and the lid The plates 31 to 34 are bent and assembled into a box shape. Reference numeral 15 denotes a glued piece.
[0009]
The packaging box 10 has a projecting piece 41 extending in a protruding manner on one side edge of the cover plates 31 and 32, and the projecting piece 41 is folded on the upper surfaces of the cover plates 31 and 32 (the projecting piece 41 is folded in two). The cover plate 31 may be bonded by an adhesive or fixed by locking means such as inserting the protruding pieces 41 into cut lines 42 provided on the upper surfaces of the cover plates 31 and 32. , 32 are formed on the upper surface. Note that portions of the cover plates 33 and 34 corresponding to the projecting pieces 41 of the cover plates 31 and 32 are cut out.
[0010]
The packaging box 10 has a concave portion 50 that fits into the convex portion 40 in one end of the bottom plates 21 and 22. The concave portion 50 is formed by punching a part of the bottom plates 21 and 22 or performing perforation that is broken by being pressed by the convex portion 40 when the upper boxes 10 are stacked.
[0011]
When the packaging boxes 10 are stacked as shown in FIG. 1, each of the recesses 50 of the bottom plates 21 and 22 of the upper box 10 fits into the projections 40 of the lid plates 31 and 32 of the lower box 10. In the box 10, the convex portions 40 and the concave portions 50 are arranged correspondingly.
[0012]
The protruding pieces 41 for forming the convex portions 40 provided on the packaging box 10 may be provided on any of the three sides of the end sides on both sides of the cover plates 31 and 32, and may have any shape and size. It is. The recess 50 provided in the packaging box 10 is also provided on any of the three sides of the both sides and the tip side of the bottom plates 21 and 22 as long as the recess 50 is arranged so as to be fitted to the projection 40 of the lower box 10. May be used, and the outer shape and size are free.
[0013]
After forming the trunk | drum by the side plates 11-14, the packaging box 10 incorporates the bottom plates 21-24 connected continuously with the lower edge of the side plates 11-14, and forms a bottom part. After the contents such as bottles and standing pouches are stored, the lid plates 31 to 34 connected to the upper edges of the side plates 11 to 14 are assembled together and closed.
[0014]
In the physical distribution stage and the storefront display stage of the packaging boxes 10, the packaging boxes 10 are stacked. At the storefront display stage of the packaging box 10, the cover plates 31 to 34 may be cut off and / or the side plates 11 to 14 may be partially cut out to form a display opening.
[0015]
According to the present embodiment, the following operations are provided.
{Circle around (1)} Since the packaging box 10 includes the cover plates 31 to 34, it is possible to prevent dust from entering.
{Circle around (2)} When the packaging boxes 10 are vertically stacked, the recesses 50 of the bottom plates 21 and 22 of the upper box 10 fit into the projections 40 of the lid plates 31 and 32 of the lower box 10, and the boxes are displaced laterally. Is prevented.
[0016]
{Circle around (3)} Since the lateral displacement of the boxes is prevented, the corners of the upper box 10 and the corners of the lower box 10 can be stably matched to prevent the stepped strength of the box 10 from deteriorating. Moreover, the collapse of the load of the box 10 can be prevented.
[0017]
{Circle around (4)} Since the convex portion 40 for preventing lateral displacement between the boxes is formed by folding the base sheet and has a low height, when the boxes 10 are unloaded, the upper boxes 10 The box 10 can be slid in the front, rear, left and right directions only by slightly lifting it from above, so that the handling of the box 10 can be improved.
[0018]
(5) Since there is no member for preventing the lid plates 31 to 34 from being opened, the lid plates 31 to 34 can be opened large (270 degrees), and the openability is good.
[0019]
{Circle around (6)} The convex portions 40 of the cover plates 31 and 32 can be easily formed by folding the base material sheet.
[0020]
The number of the protrusions 40 provided in one packaging box 10 may be one or more, and if it is two or more, the action of preventing lateral displacement can be improved. The number of the concave portions 50 provided in one packaging box 10 is the same as or larger than the number of the convex portions 40. When the number of the convex portions 40 is odd, the number of the concave portions 50 is an even number, and when the number of the convex portions 40 is an even number, the number of the concave portions 50 is the same. When the upper boxes 10 are stacked, the upper box 10 is replaced with the lower box 10. The protrusions 40 and the recesses 50 can be fitted only by rotating 180 degrees without rotating 360 degrees on the surface.
[0021]
(2nd Embodiment) (FIG. 3, FIG. 4)
The difference between the packaging box 10 of the second embodiment and the packaging box 10 of the first embodiment is that the projections 41 forming the projections 40 are provided on the tip sides of the cover plates 31 and 32 in a projecting manner, and the recess 50 is formed on the bottom plate. 21 and 22. In this case, the base sheet of the box 10 has the protrusions 41 projecting outward, but the cover plates 33 and 34 do not have cutouts for the protrusions 41.
[0022]
(Third embodiment) (FIG. 5)
The difference between the packaging box 10 of the third embodiment and the packaging box 10 of the first embodiment is that a projecting piece 41 that forms the projection 40 is formed by cutting and forming one side of the cover plates 31 and 32. The recess 50 is provided in one end of the bottom plates 21 and 22. In this case, in the base material sheet of the packaging box 10, the protruding pieces 41 do not protrude outward, and the cover plates 33 and 34 do not have cutouts for the protruding pieces 41.
[0023]
(4th Embodiment) (FIG. 6, FIG. 7)
The difference between the packaging box 10 of the fourth embodiment and the packaging box 10 of the second embodiment is that one convex portion 40 and two concave portions 50 are provided in one box 10. That is, the protruding piece 41 constituting the convex portion 40 is provided on the distal side of the cover plate 31, and the concave portion 50 is provided on the distal side of the bottom plates 21 and 22. When the packaging boxes 10 are stacked as shown in FIG. 6, the upper box 10 is provided with either the concave portion 50 of the bottom plate 21 or the concave portion 50 of the bottom plate 22 on the convex portion 40 of the lid plate 31 of the lower box 10. Can also be fitted. In other words, when the upper boxes 10 are stacked, as described above, the convex sections 40 and the concave sections 50 are fitted only by rotating the upper box 10 by 180 degrees without rotating it 360 degrees on the surface of the lower box 10. Can be done.
[0024]
(Fifth Embodiment) (FIGS. 8 and 9)
The difference between the packaging box 10 of the fifth embodiment and the packaging box 10 of the first embodiment is, as shown in FIG. 9, between the side plates 11 and 13, between the side plates 13 and 12, and between the side plates 12 and 14. In between, reinforcing pieces 61 to 63 connected to the side edges intersecting the upper edges of the side plates 11 to 14 are interposed, and reinforcing pieces 64 connected to the side edges intersecting the upper edge of the side plates 11 are provided. Prepare. A glued piece 65 is connected to the reinforcing piece 64. The reinforcing pieces 61 to 64 are provided over the entire length of the side edges of the side plates 11 to 14 to which they are connected (the total height of the reinforcing pieces 61 to 64 is the same as the total height of the side plates 11 to 14).
[0025]
The assembling of the packaging box 10 is performed by folding each of the reinforcing pieces 61 to 64 into two pieces (three or more pieces may be used), and bonding the two folded reinforcing pieces 61 and 64 (for example, 61A and 61B, 62A and 62B) with an adhesive. To the outer surface of the side plate 13, the two folded reinforcing pieces 63 and 64 are bonded to the outer surface of the side plate 14 via an adhesive, and the side plates 11 to 14 of the packaging box 10 are connected in a square frame shape. Construct the trunk.
[0026]
According to the present embodiment, the reinforcing pieces 61 to 64 provided over the entire length of the side edges of the side plates 11 to 14 of the packaging box 10 are attached to the outer side surfaces of the side plates 13 and 14, thereby improving the box strength (height). Direction compressive strength, lateral bending strength) can be improved. At this time, since the reinforcing pieces 61 to 64 are flattened in a folded shape and are not of a triangular prism shape, the content accommodating space of the box 10 is not reduced, and the accommodation efficiency of the packaging box 10 is not reduced.
[0027]
(Sixth embodiment) (FIGS. 10 and 11)
The packaging box 100 is a lapland-type corrugated cardboard case, and is made of a base sheet such as a corrugated cardboard sheet. In the unfolded state shown in FIG. 11, a lid plate 101, a front plate 102, a bottom plate 103, and a back plate 104 are connected in series. Outer flaps 111A and 111B on both sides of the cover plate 101, inner flaps 112A and 112B on both sides of the front plate 102, outer flaps 113A and 113B on both sides of the bottom plate 103, and inner flaps 114A on both ends of the back plate 104. , 114B, and glue pieces 115 are provided so as to be connected to the tip side of the lid plate 101, and they are folded and assembled into a box shape.
[0028]
In the packaging box 100, a protruding piece 121 formed by cutting a glued piece 115 is continuously provided on the tip side of the lid plate 101, and the protruding piece 121 is folded on the upper surface of the lid plate 101 and adhered with an adhesive, or The protrusion 121 is formed on the upper surface of the lid plate 101 by fixing the protruding piece 121 by a locking means such as inserting it into a cut line 122 provided on the upper surface of the lid plate 101.
[0029]
The packaging box 100 has two concave portions 130, 130 fitted on the convex portions 120 on both sides of the bottom plate 103 in contact with the front plate 102 and the rear plate 104, respectively. The concave portion 130 is formed by punching a part of the bottom plate 103 or performing a perforation process that is broken by being pressed by the convex portion 120 when the upper boxes 100 are stacked.
[0030]
When the packaging boxes 100 as shown in FIG. 10 are stacked, the upper box 100 has both the two concave portions 130 and 130 of the bottom plate 103 on the convex portion 120 of the lid plate 101 of the lower box 100. Can fit.
In the present invention, a convex portion may be provided on the bottom plate and a concave portion may be provided on the lid plate.
[0031]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, in a packaging box with a lid, while improving the stacking strength, it is possible to prevent lateral displacement in a stacked state without impairing the handleability and openability of the box.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a stacked state of packaging boxes according to a first embodiment.
FIG. 2 is a development view of a packaging box.
FIG. 3 is a schematic diagram showing a stacked state of packaging boxes according to a second embodiment.
FIG. 4 is a development view of a packaging box.
FIG. 5 is an expanded view of a packaging box according to a third embodiment.
FIG. 6 is a schematic diagram showing a stacked state of packaging boxes according to a fourth embodiment.
FIG. 7 is a development view of a packaging box.
FIG. 8 is a schematic diagram showing a stacked state of packaging boxes according to a fifth embodiment.
FIG. 9 is a development view of a packaging box.
FIG. 10 is a schematic diagram showing a packaging box according to a sixth embodiment.
FIG. 11 is an expanded view of a packaging box.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Packaging box 11-14 Side plate 21-24 Bottom plate 31-34 Cover plate 40 Convex part 50 Concave 100 Packaging box 101 Cover plate 103 Bottom plate 120 Convex part 130 Concave part
