JP2015085942A

JP2015085942A - Container

Info

Publication number: JP2015085942A
Application number: JP2013223825A
Authority: JP
Inventors: 宣之熊澤; Noriyuki Kumazawa
Original assignee: LT RYUTSU CENTER CO Ltd
Current assignee: LT RYUTSU CENTER CO Ltd
Priority date: 2013-10-29
Filing date: 2013-10-29
Publication date: 2015-05-07

Abstract

【課題】接着等することなく閉止でき、また手で開梱できる梱包箱を実現する。【解決手段】梱包箱を形成するブランクは、底板部10前板部20前天板部30後板部40後天板部35左右側板部55,50を、前天板部は先端部に閉止爪32,34を、後天板部は閉止スリット36,38と左右端部辺に形成された左右側部閉止爪39,38を、右側板部50は右天板内フラップ53と右側部スリット51を、左側板部は左天板内フラップ58と左右側部スリット56を有し、左右側板部を同方向に折曲げた後、後板部を折曲げ、後天板部の左右側部閉止爪を左右側部スリットに係止して、後板部と相対する側が開口した箱体を形成し、更に前板部を折曲げて前天板部で後天板部を覆い、前天板部の閉止爪を後天板部の閉止スリットに係止して該梱包箱を閉止でき、閉止された梱包箱を開封する引裂き線を前板部に形成した。【選択図】図１A packaging box that can be closed without bonding or unpacked by hand is realized. SOLUTION: A blank forming a packaging box includes a bottom plate portion 10, a front plate portion 20, a front top plate portion 30, a rear plate portion 40, a rear top plate portion 35, left and right side plate portions 55, 50, and the front top plate portion has a closing claw 32, 34, the rear top plate has the closing slits 36, 38 and the left and right side closing claws 39, 38 formed on the left and right end sides, the right side plate 50 has the right top plate flap 53 and the right side slit 51, the left side The plate part has a left top plate flap 58 and left and right side slits 56. After bending the left and right side plate parts in the same direction, the rear plate part is bent and the left and right side closing claws of the rear top plate part are placed on the left and right sides. Engage with the slits to form a box that opens on the side facing the rear plate, and then fold the front plate to cover the rear top plate with the front top plate, and use the front top plate with the closing claw The packaging box can be closed by engaging with the closing slit of the part, and a tear line for opening the closed packaging box is formed in the front plate part. [Selection] Figure 1

Description

本発明は、ブランクを糊などで接着またはテープなどで貼着することなく、梱包箱の形成および蓋部の閉止が可能であり、また閉止後の梱包箱を、道具を用いることなく手で開梱可能な梱包箱に関するものである。 The present invention can form a packaging box and close the lid without adhering the blank with glue or sticking with tape, etc., and can open the packaging box after closing without using a tool. It relates to a packing box that can be packed.

種々の物品を輸送する場合、梱包箱などに物品を収容して輸送することが一般的である。しかし比較的安価で輸送コストを低減したい物品で、且つ平面的形状を有し且つ柔らかい物品、たとえばカレンダーなどは、筒状に丸めたうえで円筒形状に形成された樹脂フィルムや紙に挿通するなどして、郵送または宅配便などで送られることが多い。 When transporting various articles, it is common to store the articles in a packing box or the like for transport. However, articles that are relatively inexpensive and want to reduce transportation costs, and that have a flat shape and are soft, such as a calendar, are rolled into a cylindrical shape and inserted into a cylindrically formed resin film or paper. Often sent by mail or courier.

しかしこうした輸送では、輸送中に変形したり傷ついたりすることがある。加えてカレンダーなどを筒状にして樹脂フィルムなどに挿通するのは、手間がかかる。こうした輸送中における物品の毀損などは梱包箱で輸送することで防ぐことができる。たとえばカレンダーを折り目がつかないように折りたたむなどして偏平な梱包箱に収容して郵送すれば、毀損防止はもとより、梱包箱の容積を少なくして輸送コストを低減できる。 However, such transport can be deformed or damaged during transport. In addition, it takes time and effort to insert a calender or the like into a cylindrical shape through a resin film. Such damage of goods during transportation can be prevented by transporting in a packing box. For example, if the calendar is folded so that there is no crease, it can be stored in a flat packing box and mailed to reduce damage as well as to reduce the volume of the packing box and reduce transportation costs.

梱包箱は、４つの側面、天面および底面となる各板部を有する１枚のブランクを、折り目線に従って折ることで、梱包箱とするものが一般的である。梱包箱では、隣接する板部同士を糊などで接着して、またはテープで貼着して、梱包箱が形成される（特許文献１〜４）。 In general, the packaging box is formed as a packaging box by folding a blank having four side surfaces, a top surface, and a plate portion serving as a bottom surface according to a crease line. In a packaging box, adjacent board parts are adhere | attached with glue etc., or it sticks with a tape, and a packaging box is formed (patent documents 1-4).

これら梱包箱の閉止は糊などによる接着またはテープによる貼着で行われ、開梱は梱包箱の面に形成されたミシン目を引裂くことで（特許文献１、２）、または接着部やテープ貼着部を剥がすことで行われる（特許文献３）。特許文献４が開示する梱包箱（ダンボール箱）は、接着またはテープの貼着などで箱体を形成したのち、２つの天板からなる天井壁部を係止舌片と係止スリットで係止して閉塞する。この梱包箱は、開梱に際し係止舌片を係止スリットから強制的に引き抜かなければならない。 Closing of these packing boxes is done by bonding with glue or sticking with tape, and unpacking is done by tearing the perforations formed on the surface of the packing box (Patent Documents 1 and 2), or bonding parts and tape This is done by removing the sticking part (Patent Document 3). The packaging box (corrugated cardboard box) disclosed in Patent Document 4 forms a box body by bonding or attaching a tape, and then locks the ceiling wall portion composed of two top plates with a locking tongue and a locking slit. Then block. When the packaging box is unpacked, the locking tongue must be forcibly pulled out of the locking slit.

しかし、上述した各梱包箱は、物品の収容に際し、糊づけ、またはテープの貼着をしなければ梱包箱を形成できない。そのため、通信販売業界などでは、糊づけテープの貼着作業、および糊などの材料費でコストが増大するという問題がある。特に偏平な形状の梱包箱では、糊づけが必要な辺部が短くなるなどして、糊づけの作業性が著しく低下する。 However, each packaging box mentioned above cannot form a packaging box, unless it paste | pastes or sticks a tape in the case of accommodation of articles | goods. Therefore, in the mail order industry, there is a problem that the cost increases due to the pasting work of the glue tape and the material cost such as glue. In particular, in a flat packaging box, the side portions that need to be glued are shortened, and the workability of glueing is significantly reduced.

さらに糊づけ等された梱包箱は、開梱時に糊などを剥がさねばならず、カッターナイフなどの道具を必要とし開梱作業が容易でない。さらに、リサイクルするときには、解体した梱包箱からテープを剥がさなければならないこともあり、開梱作業が煩雑であるという問題がある。開梱が容易なミシン目を引裂くタイプの梱包箱においても、リサイクルにおけるテープの処理は同様の問題を生じさせる。上記の各問題は、梱包箱を物品保管などに用いる場合でも同様である。 Furthermore, the glued packaging box must be peeled off when unpacking, and requires a tool such as a cutter knife, so that unpacking is not easy. Furthermore, when recycling, there is a problem that the tape must be peeled off from the dismantled packaging box, and there is a problem that the unpacking operation is complicated. Even in a packaging box that tears a perforation that is easy to unpack, the processing of tape in recycling causes the same problem. Each of the above problems is the same even when the packaging box is used for article storage or the like.

特開２０１０−０９５２６２号公報JP 2010-095262 A 特開２００８−０７４４５８号公報JP 2008-074458 A 特開２００４−１６８３５４号公報JP 2004-168354 A 実用新案登録３１２７８０４号公報Utility Model Registration No. 3127804

そこで本発明は、糊づけ、またはテープの貼着をすることなく確実に閉止でき、迅速かつローコストの梱包作業を可能とする梱包箱を実現し、さらに開梱に際し、カッターナイフなどの道具を必要とせず、手で開梱することができ、リサイクルする際に、梱包箱の解体が容易であり、かつテープなどの分別が不要でありさらに好ましくはブランクを折り曲げた際にできる隙間を少なくするとともに、偏平な梱包箱においても、組み立てが容易であり、確実な梱包が可能な梱包箱の実現を課題とした。 Therefore, the present invention realizes a packaging box that can be securely closed without gluing or adhering tape, enabling a quick and low-cost packaging operation, and further requires a tool such as a cutter knife for unpacking. It can be unpacked by hand, and when it is recycled, the packaging box can be easily disassembled, and it is not necessary to separate the tape, etc. More preferably, the gap formed when the blank is folded is reduced. Even in a flat packaging box, it was an object to realize a packaging box that is easy to assemble and can be reliably packed.

上記課題を解決するために、本発明に係る梱包箱は、略四辺形の底板部と、底板部の前方に連接した前板部および前天板部と、底板部の後方に連接した後板部および後天板部と、底板部の右方に連接した右側板部と、底板部の左方に連接した左側板部とを有するブランクを折り曲げて形成される梱包箱であって、前天板部は、先端部に形成された複数の閉止爪を有し、後天板部は、複数の閉止スリット、右端部辺に形成された右側部閉止爪および左端部辺に形成された左側部閉止爪を有し、右側板部は、底板部と相対する側に連接した右天板内フラップを有し、右側板部と右天板内フラップとの境界近傍には右側部スリットが形成されており、左側板部は、底板部と相対する側に連接した左天板内フラップを有し、左側板部と左天板内フラップとの境界近傍には左右側部スリットが形成されており、右側板部および左側板部を底板部に対し同じ方向で且つ略垂直に折り曲げるとともに、右天板内フラップおよび左天板内フラップを折り曲げ、さらに後板部を底板部に対し、右側板部および左側板部と同方向で且つ略垂直に折り曲げるとともに後天板部を折り曲げ、底板部側に向けて折り曲げた状態の右側部閉止爪および左側部閉止爪を、右側部スリットに係止するとともに左側部スリットにそれぞれ係止することで、後板部と相対する側が開口した箱体を形成することができ、さらに前板部および前天板部を右側板部および左側板部と同方向に折り曲げて、後天板部を覆い、前天板部に形成された複数の閉止爪を後天板部が有する複複数の閉止スリットに係止することで該梱包箱を閉止することができ、上記閉止された該梱包箱を開封するための引裂き線が少なくとも前板部に形成されている。 In order to solve the above problems, a packaging box according to the present invention includes a substantially quadrangular bottom plate portion, a front plate portion and a front top plate portion connected to the front of the bottom plate portion, and a rear plate portion connected to the rear of the bottom plate portion. And a packaging box formed by folding a blank having a back plate, a right plate connected to the right of the bottom plate, and a left plate connected to the left of the bottom plate, the front plate being The rear top plate portion has a plurality of closing slits, a right side closing claw formed on the right end side, and a left side closing claw formed on the left end side. The right side plate portion has a right top plate flap connected to the side opposite to the bottom plate portion, and a right side slit is formed in the vicinity of the boundary between the right side plate portion and the right top plate flap. The plate portion has a left top plate flap connected to the side opposite to the bottom plate portion, and the left plate and left top plate flap. Left and right side slits are formed in the vicinity of the boundary, and the right side plate and the left side plate are bent in the same direction and substantially perpendicular to the bottom plate, and the right top plate flap and the left top plate flap are A right side closing claw in a state where the rear plate is bent in the same direction and substantially perpendicular to the right and left plates with respect to the bottom plate, and the rear top plate is bent and bent toward the bottom plate. By locking the left side closing claw with the right side slit and the left side slit, respectively, it is possible to form a box with an opening on the side facing the rear plate part, and further, the front plate part and the front top plate By folding the part in the same direction as the right side plate and left side plate, covering the rear top plate, and locking the plurality of closing claws formed on the front top plate to the plurality of closing slits of the rear top plate The packing box Can be stopped, tear line for opening the packaging box which is the closer is formed at least on the front plate portion.

上記構成を有する本発明にかかる梱包箱によれば、梱包箱の組み立て時における糊づけ作業、テープの貼着作業、および閉止のための糊などが不要となるため、梱包箱の組み立てなどのコストを低減することができ、ブランクを折り曲げた際にできる隙間を少なくすることができ、またカッターナイフなどの道具を必要とせず、手で開梱することができ作業が容易で開梱作業のコストを低減することができ、開梱後においても解体した梱包箱からテープなどを取り除く必要がないから、リサイクル作業のコストを低減できる。さらに偏平な梱包箱においても、容易な組み立て、および確実な梱包が可能となる。 According to the packaging box according to the present invention having the above-described configuration, the pasting work at the time of assembling the packaging box, the tape sticking work, the glue for closing, and the like are not required, so the cost of assembling the packaging box etc. Can be reduced, the gaps that can be created when the blank is folded can be reduced, and tools such as cutter knives are not required. Since it is not necessary to remove the tape from the dismantled packaging box even after unpacking, the cost of recycling work can be reduced. Furthermore, even a flat packaging box can be easily assembled and reliably packed.

本発明の一実施例にかかる梱包箱を形成するためのブランクの概略平面構成を示す図である。It is a figure which shows the schematic plane structure of the blank for forming the packaging box concerning one Example of this invention. 図１に示すブランクが有する閉止爪、閉止スリットの概略構成を説明するための図である。It is a figure for demonstrating schematic structure of the closing nail and the closing slit which the blank shown in FIG. 1 has. 図１に示すブランクが有する後天板部の右側部閉止爪の、右側部スリットへの挿入を説明するための図である。It is a figure for demonstrating insertion to the right side slit of the right side part closing claw of the rear top plate part which the blank shown in FIG. 1 has. 図１に示すブランクの各構成部分を折り曲げて、後板部と相対する側に開口部を有する箱体としたときの概略斜視構成を示す図である。It is a figure which shows a schematic perspective structure when each component part of the blank shown in FIG. 1 is bent and it is set as the box which has an opening part in the side facing a backplate part. 図４に示す箱体の開口部を前板部で閉塞して、梱包箱を閉止したときにおける梱包箱の概略斜視構成を示す図である。It is a figure which shows the schematic perspective structure of a packaging box when the opening part of the box shown in FIG. 4 is obstruct | occluded with a front board part, and a packaging box is closed. 図５に示す梱包箱を開封したときの概略斜視構成を示す図である。It is a figure which shows a schematic perspective structure when the packaging box shown in FIG. 5 is opened.

以下、図面を参照して本発明にかかる梱包箱について説明する。 Hereinafter, a packaging box according to the present invention will be described with reference to the drawings.

＜梱包箱を形成するためのブランクの概略構成＞
本発明の一実施例にかかる梱包箱１を、それを形成するブランク２とともに説明する。図１にその平面概略構成を示すブランク２は、底板部１０、前板部２０、前天板部３０、後天板部３５、後板部４０、右側板部５０および左側板部５５を有している。ブランク２の底板部１０の右辺部１０ａは底板部１０と右側板部５０との境界（折り目部）となっており、右辺部１０ａと相対する左辺部１０ｂは底板部１０と左側板部５５との境界（折り目部）となっている。また底板部１０の前辺部１０ｃは底板部１０と前板部２０との境界（折り目部）となっており、底板部１０の後辺部１０ｄは底板部１０と後板部４０との境界（折り目部）となっている。 <Schematic configuration of blank for forming a packing box>
The packaging box 1 concerning one Example of this invention is demonstrated with the blank 2 which forms it. 1 has a bottom plate portion 10, a front plate portion 20, a front top plate portion 30, a rear top plate portion 35, a rear plate portion 40, a right side plate portion 50, and a left side plate portion 55. Yes. The right side portion 10a of the bottom plate portion 10 of the blank 2 is a boundary (folded portion) between the bottom plate portion 10 and the right side plate portion 50, and the left side portion 10b opposite to the right side portion 10a is the bottom plate portion 10 and the left side plate portion 55. It becomes the boundary (fold part). The front side portion 10 c of the bottom plate portion 10 is a boundary (folded portion) between the bottom plate portion 10 and the front plate portion 20, and the rear side portion 10 d of the bottom plate portion 10 is a boundary between the bottom plate portion 10 and the rear plate portion 40. (Folded part).

前板部２０は、底板部１０と前天板部３０との間に介在し、後板部４０は、底板部１０と後板部４０との間に介在している。前天板部３０と前板部２０との境界２０ａは両者間の折り目部となっている。また後天板部３５と後板部４０との境界４０ａは両者間の折り目部となっている。後天板部３５の右端部辺３５ｂには、右側部閉止爪３９ａが形成されており、そして後天板部３５の左端部辺３５ｃには、左側部閉止爪３９ｂが形成されている。 The front plate portion 20 is interposed between the bottom plate portion 10 and the front top plate portion 30, and the rear plate portion 40 is interposed between the bottom plate portion 10 and the rear plate portion 40. A boundary 20a between the front top plate 30 and the front plate 20 is a crease between the two. Further, a boundary 40a between the rear top plate portion 35 and the rear plate portion 40 is a fold portion between the two. A right side closing claw 39 a is formed on the right end side 35 b of the rear top plate 35, and a left side closing claw 39 b is formed on the left end side 35 c of the rear top plate 35.

右側部閉止爪３９ａは、略矩形、略菱形または略台形などを成しており、その略中心部を通る線（中心線）３９ｘは、後天板部３５の右側延長方向において、底板部１０の後辺部１０ｄの延長線と交差するように形成されていることが望ましい。左側部閉止爪３９ｂも同様であり、その略中心部を通る線（中心線）３９ｙは、後天板部３５の左側延長方向において、後辺部１０ｄの延長線と交差するように形成されていることが望ましい。 The right side closing claw 39a has a substantially rectangular shape, a substantially rhombus shape or a substantially trapezoidal shape, and a line (center line) 39x passing through the substantially central portion of the bottom plate portion 10 extends in the right-side extension direction of the rear top plate portion 35. It is desirable that it be formed so as to intersect with the extended line of the rear side portion 10d. The same applies to the left side closing claw 39b, and a line (center line) 39y passing through the substantially central part thereof is formed so as to intersect with an extension line of the rear side part 10d in the left extension direction of the rear top plate part 35. It is desirable.

右側部閉止爪３９ａおよび左側部閉止爪３９ｂが上記のように形成されていれば、右側部閉止爪３９ａおよび左側部閉止爪３９ｂを、後述するように右側部スリット５１および左側部スリット５６に円滑に挿入でき、また円滑に離脱できる。 If the right side closing claw 39a and the left side closing claw 39b are formed as described above, the right side closing claw 39a and the left side closing claw 39b are smoothly moved to the right side slit 51 and the left side slit 56 as will be described later. Can be inserted and removed smoothly.

ここで、前板部２０の高さは、境界２０ａと底板部１０の前辺部１０ｃとの間隔に等しい。後板部４０の高さは、境界４０ａと底板部１０の後辺部１０ｄとの間隔に等しい。なお前板部２０の高さは、後板部４０の高さより僅かに高い。 Here, the height of the front plate portion 20 is equal to the interval between the boundary 20 a and the front side portion 10 c of the bottom plate portion 10. The height of the rear plate portion 40 is equal to the distance between the boundary 40a and the rear side portion 10d of the bottom plate portion 10. Note that the height of the front plate portion 20 is slightly higher than the height of the rear plate portion 40.

右側板部５０は、底板部１０と右天板内フラップ５３との間に介在し、左側板部５５は、底板部１０と左天板内フラップ５８との間に介在している。右天板内フラップ５３と右側板部５０との境界５０ａは両者間の折り目部となっており、左天板内フラップ５８と左側板部５５との境界５５ａは両者間の折り目部となっている。境界５０ａ上には右側部スリット５１が形成されており、また境界５５ａ上には左側部スリット５６が形成されている。右側板部５０の高さは、境界５０ａと底板部１０の右辺部１０ａとの間隔に等しく、左側板部５５の高さは、右側板部５０の高さと等しい。右側板部５０および左側板部５５の高さは、後板部４０の高さより僅かに低い。 The right side plate portion 50 is interposed between the bottom plate portion 10 and the right top plate flap 53, and the left side plate portion 55 is interposed between the bottom plate portion 10 and the left top plate flap 58. The boundary 50a between the right top plate flap 53 and the right side plate portion 50 is a fold portion between them, and the boundary 55a between the left top plate flap 58 and the left side plate portion 55 is a fold portion therebetween. Yes. A right side slit 51 is formed on the boundary 50a, and a left side slit 56 is formed on the boundary 55a. The height of the right side plate portion 50 is equal to the distance between the boundary 50 a and the right side portion 10 a of the bottom plate portion 10, and the height of the left side plate portion 55 is equal to the height of the right side plate portion 50. The height of the right side plate portion 50 and the left side plate portion 55 is slightly lower than the height of the rear plate portion 40.

ブランク２は、典型的には段ボールで形成されるが、厚紙、合成樹脂などで形成されたものであってもよい。 The blank 2 is typically formed of corrugated cardboard, but may be formed of cardboard, synthetic resin, or the like.

＜前板部と引裂き線＞
前板部２０には、第一の引裂き線２１、第二の引裂き線２２、第三の引裂き線２３および第四の引裂き線２４が形成されている。第一の引裂き線２１は、その一端２１ａが前板部２０と前天板部３０との境界２０ａの右側端部に位置し、その他端２１ｂが底板部１０の前辺部１０ｃの右側端部より若干内側に位置している。第二の引裂き線２２は、その一端２２ａが境界２０ａの左側端部に位置し、その他端２２ｂが前辺部１０ｃの左側端部より若内側に位置している。 <Front plate and tear line>
A first tear line 21, a second tear line 22, a third tear line 23, and a fourth tear line 24 are formed on the front plate portion 20. One end 21 a of the first tear line 21 is located at the right end of the boundary 20 a between the front plate portion 20 and the front top plate portion 30, and the other end 21 b is from the right end portion of the front side portion 10 c of the bottom plate portion 10. It is located slightly inside. One end 22a of the second tear line 22 is located at the left end of the boundary 20a, and the other end 22b is located on the inner side of the left end of the front side 10c.

第三の引裂き線２３は、底板部１０の前辺部１０ｃに略沿うようにして、第一の引裂き線２１の他端２１ｂから前辺部１０ｃの中央部に向けて形成されている。第四の引裂き線２４は、底板部１０の前辺部１０ｃに略沿うようにして、第二の引裂き線２２の他端２２ｂから前辺部１０ｃの中央部に向けて形成されている。さらに第三の引裂き線２３と第四の引裂き線２４との間に介在する引裂き始点部２５は、前辺部１０ｃの略中央部に位置づけられている。 The third tear line 23 is formed from the other end 21b of the first tear line 21 toward the center of the front side part 10c so as to be substantially along the front side part 10c of the bottom plate part 10. The fourth tear line 24 is formed from the other end 22b of the second tear line 22 toward the center of the front side part 10c so as to be substantially along the front side part 10c of the bottom plate part 10. Furthermore, the tear start point 25 interposed between the third tear line 23 and the fourth tear line 24 is positioned at a substantially central portion of the front side portion 10c.

ところで、梱包箱１は偏平であるほど、前板部２０の高さに対する、底板部１０の前辺部１０ｃの比率が大きくなる。したがって第一の引裂き線２１および第二の引裂き線２２を長くするほど（第一の引裂き線２１の他端２１ｂおよび第二の引裂き線２２の他端２２ｂを前辺部１０ｃの略中央部に近づけるほど）、前板部２０は、これら引き裂き線を折り目部とする折り曲がりが生じやすくなる。 By the way, the ratio of the front side part 10c of the bottom plate part 10 with respect to the height of the front plate part 20 becomes large, so that the packaging box 1 is flat. Accordingly, the longer the first tear line 21 and the second tear line 22 are, the longer the other end 21b of the first tear line 21 and the other end 22b of the second tear line 22 are at the substantially central portion of the front side portion 10c. The closer to the front plate portion 20, the easier it is to cause the front plate portion 20 to bend with these tear lines as creases.

こうした折り曲がりを防ぐため、梱包箱１では、第一の引裂き線２１の他端２１ｂを底板部１０の右辺部１０ａに近づけるとともに、第二の引裂き線２２の他端２２ｂを底板部１０の左辺部１０ｂに近づけることが好ましい（第一および第二の引裂き線２１および２２を短くすることが好ましい。）。そうすれば、底板部１０の前辺部１０ｃに略沿うようにして形成される第三の引裂き線２３および第四の引裂き線２４を長くでき、前板部２０の折り曲がりを防ぐことができる。なお各引裂き線および引裂き始点部２５は、上記構成に限定されず、たとえば後板部４０において同様に形成されたものでもよい。 In order to prevent such bending, in the packaging box 1, the other end 21 b of the first tear line 21 is brought closer to the right side part 10 a of the bottom plate part 10, and the other end 22 b of the second tear line 22 is placed on the left side of the bottom plate part 10. It is preferable to approach the part 10b (it is preferable to shorten the first and second tear lines 21 and 22). If it does so, the 3rd tear line 23 and the 4th tear line 24 which are formed so that it may extend along the front side part 10c of the baseplate part 10 can be lengthened, and the bending of the front board part 20 can be prevented. . Each tear line and tear start point 25 is not limited to the above-described configuration, and may be formed in the rear plate portion 40 in the same manner, for example.

＜天井壁部＞
天井壁部は前天板部３０および後天板部３５で構成される。前天板部３０において、境界２０ａと相対する先端部辺３０ａには、複数の閉止爪、すなわち第一の閉止爪３２および第二の閉止爪３４が形成されている（第一の閉止爪３２は前天板部３０の先端部辺３０ａの第一の先端部領域３１に形成され、第二の閉止爪３４は同様に第二の先端部領域３３に形成されている。）。梱包箱１は、天井壁部が長方形になるほど、天井壁部の長手方向における閉止を確実なものにしなければならからである。なおさらに第三の閉止爪を形成してもよい。 <Ceiling wall>
The ceiling wall portion includes a front top plate portion 30 and a rear top plate portion 35. In the front top plate 30, a plurality of closing claws, that is, a first closing claw 32 and a second closing claw 34 are formed on the tip end side 30 a facing the boundary 20 a (the first closing claw 32 is a It is formed in the first tip end region 31 of the tip end side 30a of the front top plate portion 30, and the second closing claw 34 is similarly formed in the second tip end portion region 33). This is because the packing box 1 has to be surely closed in the longitudinal direction of the ceiling wall portion as the ceiling wall portion becomes rectangular. Still further, a third closing claw may be formed.

後天板部３５は、複数の閉止爪に対応して複数の閉止スリット、すなわち第一の閉止スリット３６および第二の閉止スリット３８を備えている。第一の閉止スリット３６に第一の閉止爪３２を、そして第二の閉止スリット３８に第二の閉止爪３４を挿入することで、梱包箱１を天井壁部で閉止できる。 The back plate portion 35 includes a plurality of closing slits corresponding to the plurality of closing claws, that is, a first closing slit 36 and a second closing slit 38. By inserting the first closing claw 32 into the first closing slit 36 and the second closing claw 34 into the second closing slit 38, the packaging box 1 can be closed at the ceiling wall.

後天板部３５の縦幅（後板部４０との境界４０ａと、この境界４０ａと相対する先端部辺３５ａとの間隔）は、底板部１０の縦幅（底板部１０の前辺部１０ｃと後辺部１０ｄとの間隔）と略同じである。一方、前天板部３０の縦幅は、底板部１０の縦幅よりも狭い。 The vertical width of the rear top plate portion 35 (the interval between the boundary 40a with the rear plate portion 40 and the tip portion side 35a facing the boundary 40a) is the vertical width of the bottom plate portion 10 (the front side portion 10c of the bottom plate portion 10). This is substantially the same as the distance from the rear side portion 10d). On the other hand, the vertical width of the front top plate portion 30 is narrower than the vertical width of the bottom plate portion 10.

なお前天板部３０および後天板部３５は、それらの縦幅の合計が底板部１０の縦幅よりも広ければ、梱包箱１を天井壁部で閉止できるのであり、上記構成に限定されない。したがって後天板部３５の縦幅は底板部１０の縦幅より若干短くてもよい。 Note that the front top plate portion 30 and the rear top plate portion 35 can close the packaging box 1 at the ceiling wall portion as long as the sum of their vertical widths is larger than the vertical width of the bottom plate portion 10, and is not limited to the above configuration. Therefore, the vertical width of the rear top plate portion 35 may be slightly shorter than the vertical width of the bottom plate portion 10.

＜閉止爪および閉止スリットについて＞
第一の閉止爪３２と第二の閉止爪３４との間隔は、前天板部３０の右端部辺３０ｂと第二の閉止爪３４との間隔に等しく、そして第一の閉止爪３２と第二の閉止爪３４との間隔の約二分の一である。 <About the claw and the closing slit>
The distance between the first closing claw 32 and the second closing claw 34 is equal to the distance between the right end side 30b of the front top plate 30 and the second closing claw 34, and the first closing claw 32 and the second closing claw 34 are the same. This is about one-half of the distance from the closing claw 34.

図２（ａ）に示すように、第一の閉止爪３２は、接続部３２ｊ、爪本体部３２ｔ、最大幅部３２ａ、爪先部３２ｂ、および切抜き部３２ｓを有している。これら第一の閉止爪３２の構成要素は、何れも左右対称に形成されている。接続部３２ｊは爪本体部３２ｔと前天板部３０との間に介在し、爪本体部３２ｔは、接続部３２ｊ近傍が最も幅広の最大幅部３２ａとなっており、爪先部３２ｂに向け幅が狭くなっている。切抜き部３２ｓは、接続部３２ｊの中央部分において、第一の閉止爪３２および前天板部３０またがる細長いスリット形状をなしている。第二の閉止爪３４も同様に形成された、接続部３４ｊ、爪本体部３４ｔ、最大幅部３４ａ、爪先部３４ｂ、および切抜き部３４ｓを有している。 As shown in FIG. 2A, the first closing claw 32 has a connection part 32j, a claw body part 32t, a maximum width part 32a, a claw tip part 32b, and a cutout part 32s. All of the constituent elements of the first closing claw 32 are formed symmetrically. The connection portion 32j is interposed between the claw body portion 32t and the front top plate portion 30, and the claw body portion 32t has a widest maximum width portion 32a in the vicinity of the connection portion 32j and has a width toward the toe portion 32b. It is narrower. The cutout portion 32 s has an elongated slit shape that spans the first closing claw 32 and the front top plate portion 30 in the central portion of the connection portion 32 j. The second closing claw 34 also has a connection portion 34j, a claw body portion 34t, a maximum width portion 34a, a toe portion 34b, and a cutout portion 34s, which are similarly formed.

図２（ｂ）に示すように、第一の閉止スリット３６は、後天板部３５において、主切込線部３６ａ、副切込線部３６ｂ、切抜き部３６ｓ、間隙３６ｓ’および舌部３６ｔを有しており、境界４０ａと平行に形成された主切込線部３６ａの両端には、境界４０ａから離れる方向に副切込線部３６ｂが連続して形成されている。これら第一の閉止スリット３６の構成要素は、何れも左右対称に形成されている。第二の閉止スリット３８も同様に形成された、主切込線部３８ａ、副切込線部３８ｂ、切抜き部３８ｓ、間隙３８ｓ’および舌部３８ｔを有している。 As shown in FIG. 2B, the first closing slit 36 includes a main cut line portion 36a, a sub cut line portion 36b, a cutout portion 36s, a gap 36s ′, and a tongue portion 36t in the rear top plate portion 35. The auxiliary cut line portions 36b are continuously formed at both ends of the main cut line portion 36a formed in parallel with the boundary 40a in a direction away from the boundary 40a. All the components of the first closing slit 36 are formed symmetrically. The second closing slit 38 has a main cut line portion 38a, a sub cut line portion 38b, a cutout portion 38s, a gap 38s', and a tongue portion 38t, which are similarly formed.

図１に示すように、後天板部３５の左端部辺３５ｃと第一の閉止スリット３６との間隔は、前天板部３０の左端部辺３０ｃと第一の閉止爪３２との間隔と等しく設定されている。後天板部３５の右端部辺３５ｂと第二の閉止スリット３８との間隔は、前天板部３０の右端部辺３０ｂと第二の閉止爪３４との間隔と等しく設定されている。 As shown in FIG. 1, the distance between the left end side 35 c of the rear top plate portion 35 and the first closing slit 36 is set equal to the distance between the left end side 30 c of the front top plate portion 30 and the first closing claw 32. Has been. The interval between the right end portion side 35 b of the rear top plate portion 35 and the second closing slit 38 is set equal to the interval between the right end portion side 30 b of the front top plate portion 30 and the second closing claw 34.

第一の閉止スリット３６の主切込線部３６ａと境界４０ａとの間隔は、底板部１０の縦幅から前天板部３０の縦幅を減じた長さとなっており（第二の閉止スリット３８も同様）、前天板部３０と後天板部３５とを重ねて梱包箱１を閉止するときに、第一の閉止爪３２を主切込線部３６ａに挿入し、また第二の閉止爪３４を主切込線部３８ａに挿入できる。 The distance between the main cut line portion 36a of the first closing slit 36 and the boundary 40a is a length obtained by subtracting the vertical width of the front top plate portion 30 from the vertical width of the bottom plate portion 10 (second closing slit 38). In the same manner, when the packaging box 1 is closed by overlapping the front top plate 30 and the rear top plate 35, the first closing claw 32 is inserted into the main cut line portion 36a, and the second closing claw 34 is also inserted. Can be inserted into the main score line 38a.

主切込線部３６ａの長さは、第一の閉止爪３２の最大幅部３２ａの幅よりも若干短い。したがって第一の閉止爪３２を第一の閉止スリット３６に容易に挿入できる一方、主切込線部３６ａが第一の閉止爪３２の最大幅部３２ａに係止して抜け止めとなる。第二の閉止爪３４についても同様である。かくして天井壁部を確実に閉止できる。 The length of the main cut line portion 36 a is slightly shorter than the width of the maximum width portion 32 a of the first closing claw 32. Accordingly, the first closing claw 32 can be easily inserted into the first closing slit 36, while the main cut line portion 36a is locked to the maximum width portion 32a of the first closing claw 32 to prevent the first closing claw 32 from coming off. The same applies to the second closing claw 34. Thus, the ceiling wall can be securely closed.

第一のスリット３６における切抜き部３６ｓは、主切込線部３６ａから、後天板部３５の先端部辺３５ａ側に向け形成されており、その横幅は第一の閉止爪３２の接続部３２ｊの横幅よりも狭い。切抜き部３６ｓの中央部には、舌部３６ｔが主切込線部３６ａに向け延出し、その先端と主切込線部３６ａとの間に間隙３６ｓ’が形成されており、舌部３６ｔの横幅は第一の閉止爪３２の切抜き部３２ｓの横幅よりも若干狭い。切抜き部３６ｓの縦幅は第一の閉止爪３２の接続部３２ｊの長さより若干長く、舌部３６ｔの長さは第一の閉止爪３２の接続部３２ｊの長さと略等しいか若干長い。第二のスリット３８における切抜き部３８ｓ等も同様に形成されている。 The cut-out portion 36 s in the first slit 36 is formed from the main cut line portion 36 a toward the tip end side 35 a side of the rear top plate portion 35, and the lateral width of the cut-out portion 36 s of the connection portion 32 j of the first closing claw 32 is formed. Narrower than width. At the center of the cutout portion 36s, a tongue portion 36t extends toward the main cut line portion 36a, and a gap 36s' is formed between the tip and the main cut line portion 36a. The lateral width is slightly narrower than the lateral width of the cutout portion 32 s of the first closing claw 32. The vertical width of the cutout portion 36s is slightly longer than the length of the connection portion 32j of the first closing claw 32, and the length of the tongue portion 36t is substantially equal to or slightly longer than the length of the connection portion 32j of the first closing claw 32. Cutout portions 38 s and the like in the second slit 38 are formed in the same manner.

したがって、第一の閉止爪３２を第一の閉止スリット３６に挿入すると、舌部３６ｔが第一の閉止爪３２の切抜き部３２ｓに係止して、第一の閉止爪３２の、第一の閉止スリット３６からの離脱がより困難になる（天井壁部の閉止がより確実となる。）。 Accordingly, when the first closing claw 32 is inserted into the first closing slit 36, the tongue portion 36 t is engaged with the cutout portion 32 s of the first closing claw 32, and the first closing claw 32 has the first closing claw 32. Detachment from the closing slit 36 becomes more difficult (the ceiling wall is more reliably closed).

＜梱包箱の組み立てについて＞
右側板部５０および左側板部５５が底板部１０と略直交するように、底板部１０の右辺部１０ａおよび左辺部１０ｂを折り目部として山折りする（図１はブランク２の表面（梱包箱１の外側の面）を平面視したものである。）。右側板部５０および左側板部５５を折り曲げるとき、右天板内フラップ５３および左天板内フラップ５８も山折りする。そうすると、右天板内フラップ５３および左天板内フラップ５８は、底板部１０の上方に略平行して位置づけられる。 <Assembling the packing box>
The right side plate portion 50 and the left side plate portion 55 are substantially folded perpendicularly to the bottom plate portion 10 so that the right side portion 10a and the left side portion 10b of the bottom plate portion 10 are fold-folded (FIG. 1 shows the surface of the blank 2 (packaging box 1 This is a plan view of the outer surface. When the right side plate portion 50 and the left side plate portion 55 are bent, the right top plate flap 53 and the left top plate flap 58 are also folded in a mountain. Then, the right top plate flap 53 and the left top plate flap 58 are positioned substantially parallel above the bottom plate portion 10.

その後、後板部４０を山折りするとともに後天板部３５を山折りする。後天板部３５を折り曲げるとき、右側部閉止爪３９ａおよび左側部閉止爪３９ｂも山折りする。そして図３に示すように、折り曲げられた右側部閉止爪３９ａを右側部スリット５１に挿入して係止し、同様に左側部閉止爪３９ｂを左側部スリット５６に挿入して係止する。 Thereafter, the rear plate portion 40 is folded in a mountain and the rear top plate portion 35 is folded in a mountain. When the rear top plate portion 35 is bent, the right side closing claw 39a and the left side closing claw 39b are also folded in a mountain. As shown in FIG. 3, the bent right side claw 39a is inserted into the right side slit 51 and locked, and similarly, the left side claw 39b is inserted into the left side slit 56 and locked.

右側部閉止爪３９ａが右側部スリット５１に達するとき、右側部閉止爪３９ａの中心線３９ｘが右側部スリット５１と略直交するように右側部閉止爪３９ａが形成されていれば、右側部閉止爪３９ａを右側部スリット５１に円滑に挿入できる。左側部閉止爪３９ｂと左側部スリット５６との関係も同様である。 If the right side closing claw 39a is formed so that the center line 39x of the right side closing claw 39a is substantially orthogonal to the right side slit 51 when the right side closing claw 39a reaches the right side slit 51, the right side closing claw 39a can be smoothly inserted into the right side slit 51. The relationship between the left side closing claw 39b and the left side slit 56 is the same.

そうすると、図４に示すように、底板部１０の上方に後天板部３５が平行して位置づけられ、底板部１０および後天板部３５の右側部が右側板部５０で閉塞され、底板部１０および後天板部３５の左側部が左側板部５５で閉塞され、底板部１０および後天板部３５の後部が後板部４０で閉塞され、底板部１０および後天板部３５の前部（前板部２０側）が開口した箱体３を形成できる。 Then, as shown in FIG. 4, the rear top plate portion 35 is positioned in parallel above the bottom plate portion 10, the bottom plate portion 10 and the right side portion of the rear top plate portion 35 are closed by the right side plate portion 50, and the bottom plate portion 10 and The left side portion of the rear top plate portion 35 is closed by the left side plate portion 55, the rear portions of the bottom plate portion 10 and the rear top plate portion 35 are closed by the rear plate portion 40, and the front portions (front plate portion) of the bottom plate portion 10 and the rear top plate portion 35 are closed. A box 3 having an opening on the (20 side) can be formed.

このとき、右側部閉止爪３９ａの中心線３９ｘと右側部スリット５１との関係、および左側部閉止爪３９ｂの中心線３９ｙとの関係が図３に示すようになっていれば、右側部閉止爪３９ａの幅と右側部スリット５１の幅との差（左側部閉止爪３９ｂと左側部スリット５６の幅との差）を少なくできるから、形成された箱体３において、後天板部３５と、右側板部５０および左側板部５５との係止のあそび（ガタ）を少なくできる。 At this time, if the relationship between the center line 39x of the right side closing claw 39a and the right side slit 51 and the relationship between the center line 39y of the left side closing claw 39b are as shown in FIG. 3, the right side closing claw Since the difference between the width of 39a and the width of the right side slit 51 (the difference between the left side closing claw 39b and the width of the left side slit 56) can be reduced, the rear top plate portion 35 and the right side The play (backlash) of the latching with the board part 50 and the left side board part 55 can be decreased.

以上説明したとおり箱体３は、ブランク２の後板部４０、右側板部５０および左側板部５５などを折り曲げることで簡単に組み立てることができる。 As described above, the box 3 can be easily assembled by bending the rear plate portion 40, the right plate portion 50, the left plate portion 55, and the like of the blank 2.

＜梱包箱の閉止について＞
次に箱体３の開口を塞ぐように前板部２０を山折りするとともに前天板部３０を山折りして後天板部３５に重ねるとともに、第一の閉止爪３２を第一の閉止スリット３６に挿入し、また第二の閉止爪３４を第二の閉止スリット３８に挿入する。こうして梱包箱１は、箱体３の形成後、さらに前天板部３０側を折り曲げて、閉止爪と閉止スリットとを係止するだけで、簡単に閉止できる（閉止した梱包箱１を図５に示す。）。 <About closing the packing box>
Next, the front plate portion 20 is folded in a mountain so as to close the opening of the box 3, the front top plate portion 30 is folded in a mountain and overlapped with the rear top plate portion 35, and the first closing claw 32 is moved to the first closing slit 36. And the second closing claw 34 is inserted into the second closing slit 38. Thus, after the box 3 is formed, the packaging box 1 can be easily closed simply by folding the front top plate 30 side and engaging the closing claw and the closing slit (the closed packaging box 1 is shown in FIG. 5). Show.)

図５に示すように、前天板部３０は、梱包箱１を閉止すると後天板部３５と重なるため、その縦幅はなるべく広いことが望ましい。何故ならば、前天板部３０の縦幅を広くすると、前天板部３０に対し第一および第二の閉止爪３２、３４を殆ど折り曲げることなく第一の閉止スリットおよび第二の閉止スリット３６、３８に挿入することができ、梱包箱１の閉止がより確実になるからである。 As shown in FIG. 5, the front top plate portion 30 overlaps with the rear top plate portion 35 when the packaging box 1 is closed, so that the vertical width is preferably as wide as possible. This is because when the vertical width of the front top plate portion 30 is widened, the first closing slit and the second closing slit 36 are hardly bent without bending the first and second closing claws 32 and 34 with respect to the front top plate portion 30. This is because the packing box 1 can be more reliably closed.

梱包箱１は、偏平になるほど（天井壁部が長方形になるほど）、天井壁部の短手方向（後天板部３５の縦幅に略等しい）は天井壁部の長手方向に比べ短くなる。そこで前天板部３０の縦幅を、後天板部３５の縦幅のたとえば５０パーセント以上とすることで（好ましくは、さらに縦幅を広げて７０〜８０パーセントとすることで）、梱包箱１の閉止時における第一および第二の閉止爪３２、３４の折り曲げを少なくできる。 As the packaging box 1 becomes flat (as the ceiling wall portion becomes rectangular), the shorter direction of the ceiling wall portion (substantially equal to the vertical width of the rear ceiling plate portion 35) becomes shorter than the longitudinal direction of the ceiling wall portion. Therefore, by setting the vertical width of the front top plate portion 30 to, for example, 50% or more of the vertical width of the rear top plate portion 35 (preferably, further increasing the vertical width to 70 to 80%), The bending of the first and second closing claws 32 and 34 at the time of closing can be reduced.

ここで、第一の閉止爪３２の最大幅部３２ａは、第一の閉止スリット３６の主切込線部３６ａの長さより若干短いから、主切込線部３６ａが第一の閉止爪３２の抜け止として作用する。また第一の閉止スリット３６の舌部３６ｔが第一の閉止爪３２の切抜き部３２ｓに係止して、第一の閉止爪３２の、第一の閉止スリット３６からの離脱がより困難になる。第二の閉止爪３４および第二の閉止スリット３８との関係も同様である。かくして天板部の閉止をより確実にすることができる。 Here, since the maximum width portion 32 a of the first closing claw 32 is slightly shorter than the length of the main cutting line portion 36 a of the first closing slit 36, the main cutting line portion 36 a is the first closing claw 32. Acts as a stopper. Further, the tongue portion 36t of the first closing slit 36 is engaged with the cutout portion 32s of the first closing claw 32, so that the first closing claw 32 is more difficult to separate from the first closing slit 36. . The relationship between the second closing claw 34 and the second closing slit 38 is the same. Thus, the top plate can be more reliably closed.

第一の閉止スリット３６の一部を成す主切込線部３６ａの近傍領域は、第一の閉止爪３２の挿入時においては、箱体３の内部空間側に若干曲がって、第一の閉止爪３２の挿入を妨げない一方、第一の閉止爪３２の挿入が完了すると、第一の閉止爪３２の接続部３２ｊの両側において第一の閉止爪３２の最大幅部３２ａに接するから、第一の閉止爪３２の第一の閉止スリット３６からの離脱を防ぐことができる（天井壁部の閉止がさらに確実となって、確実な梱包が可能となる。）。 A region near the main cut line portion 36a forming a part of the first closing slit 36 is slightly bent toward the inner space side of the box 3 when the first closing claw 32 is inserted, so that the first closing While not interfering with the insertion of the claw 32, when the insertion of the first closing claw 32 is completed, it contacts the maximum width portion 32a of the first closing claw 32 on both sides of the connection portion 32j of the first closing claw 32. It is possible to prevent the one closing claw 32 from being detached from the first closing slit 36 (the ceiling wall portion is further reliably closed and reliable packing is possible).

こうして閉止された梱包箱１は、底板部１０側の四辺はすべて折り目部となっており、天井壁部側（後天板部３５および前天板部３０側）では、後天板部３５の内側に右天板内フラップ５３および左天板内フラップ５８が重なり、後天板部３５の表面に前天板部３０が重なっている。 The packaging box 1 closed in this way has all the folds on the four sides on the bottom plate 10 side, and on the ceiling wall portion side (the rear top plate portion 35 and the front top plate portion 30 side) The top plate flap 53 and the left top plate flap 58 overlap, and the front top plate portion 30 overlaps the surface of the rear top plate portion 35.

梱包箱１の閉止に際し、たとえばカレンダーを折り目がつかないように折りたたんで、箱体３に収容することができる。なお収容する物品はカレンダーに限定されず、印刷物、布地、樹脂フィルムなどはもとより、折りたたむ必要のない物品、たとえば書籍、偏平形状を有する物品などであってもよい。 When closing the packaging box 1, for example, the calendar can be folded so as not to be folded and accommodated in the box 3. The article to be stored is not limited to a calendar, and may be a printed matter, a fabric, a resin film, or the like, or an article that does not need to be folded, such as a book or an article having a flat shape.

また梱包箱１では、外部から底板部１０や天井壁部加わる力は比較的に高さが小さい前板部２０、後板部４０、右側板部５０および左側板部５５に作用する。したがって梱包箱１は変形しにくい。たとえばカレンダーなどを折りたたんで収容したときには、カレンダーなど折り目部は前板部２０および後板部４０の近傍に位置づけられるから、外部から加わった力で収容物に折り目がつくことを防ぐことができる。 In the packaging box 1, the force applied from the outside to the bottom plate portion 10 and the ceiling wall portion acts on the front plate portion 20, the rear plate portion 40, the right side plate portion 50, and the left side plate portion 55 having relatively small heights. Therefore, the packaging box 1 is not easily deformed. For example, when a calendar or the like is folded and accommodated, the crease portion such as the calendar is positioned in the vicinity of the front plate portion 20 and the rear plate portion 40, so that it is possible to prevent the folds from being formed on the stored item due to an external force.

ところで６面体の梱包箱１は、８つの辺部を有するが、前板部２０と右側板部５０との境界部、前板部２０と左側板部５５との境界部、後板部４０と右側板部５０との境界部、および後板部４０と左側板部５５との境界部の４つの辺部にのみ隙間が生じうる。 By the way, the hexahedron packaging box 1 has eight sides, but the boundary between the front plate 20 and the right plate 50, the boundary between the front plate 20 and the left plate 55, the rear plate 40, A gap may be generated only at the four side portions of the boundary portion between the right plate portion 50 and the boundary portion between the rear plate portion 40 and the left plate portion 55.

したがって、梱包箱１の厚さ（底板部１０と後天板部３５との間隔）が薄ければ薄いほど隙間が生じうる４つの辺部の長さは、８つの辺部の長さの合計長に対し短くなる。すなわち、梱包箱１は偏平なほど隙間の影響が少ない、密閉性の良好な梱包箱となる。 Therefore, the thinner the thickness of the packing box 1 (the distance between the bottom plate portion 10 and the rear top plate portion 35), the smaller the length of the four sides that can cause a gap, the total length of the eight sides. Becomes shorter. That is, the packing box 1 becomes a packing box with good sealing property with less influence of the gap as it becomes flatter.

また梱包箱１では、底板部１０は平坦な表面を有している。したがって底板部の表面に伝票などの貼着、印刷などによって、種々の表示を施すことができる（たとえば発送元、送付先、内容物の表示、広告などである。）。 Moreover, in the packaging box 1, the baseplate part 10 has a flat surface. Therefore, various displays can be made by sticking a slip or the like on the surface of the bottom plate part, printing, etc. (for example, shipping source, destination, contents display, advertisement, etc.).

＜梱包箱の開封について＞
閉止された梱包箱１（図５）では、引裂き始点部２５は、前板部２０と底板部１０との境界領域の中央部に位置づけられる。引裂き始点部２５に指先を掛け、引裂き始点部２３を底板部１０から離れるように、第三および第四の引裂き線２３、２４を引裂き、さらに第一および第二の引裂き線２１、２２を引裂くことで梱包箱１を容易に開封できる（図６）。こうして梱包箱１を開封すると、前板部２０は底板部１０に連接した主領域２０ｘと、前天板部３０に連接した２つの副領域２０ｙとに分離する。 <About opening the packing box>
In the closed packaging box 1 (FIG. 5), the tear starting point portion 25 is positioned at the center of the boundary region between the front plate portion 20 and the bottom plate portion 10. A fingertip is applied to the tear start point 25, the third and fourth tear lines 23, 24 are torn away from the bottom plate part 10, and the first and second tear lines 21, 22 are further torn. The packaging box 1 can be easily opened by tearing (FIG. 6). When the packaging box 1 is opened in this way, the front plate portion 20 is separated into a main region 20x connected to the bottom plate portion 10 and two sub regions 20y connected to the front top plate portion 30.

すなわち、前天板部３０および後天板部３５からなる天井壁部は、後板部４０および前天板部３０に連接した前板部２０の主領域２０ｘとともに、底板部１０の後辺部１０ｄを支点として展開できる（梱包箱１を開封できる。）。 That is, the ceiling wall portion composed of the front top plate portion 30 and the rear top plate portion 35 supports the rear side portion 10d of the bottom plate portion 10 together with the main region 20x of the front plate portion 20 connected to the rear plate portion 40 and the front top plate portion 30. (The packing box 1 can be opened).

また天井壁部を上記のように展開するとき、右側部閉止爪３９ａの中心線３９ｘとスリット５１との関係が図３に示すようになっていれば（左側部閉止爪３９ｂの中心線３９ｙとスリット５６との関係も同様）、円滑な開封を実現できる。開封された梱包箱１のブランク２は、また接着剤による接着等がされていないから、容易に平面に展開できてリサイクル作業を簡略化できる。 Further, when the ceiling wall portion is expanded as described above, if the relationship between the center line 39x of the right side closing claw 39a and the slit 51 is as shown in FIG. 3 (the center line 39y of the left side closing claw 39b and The relationship with the slit 56 is the same), and smooth opening can be realized. Since the opened blank 2 of the packaging box 1 is not bonded with an adhesive or the like, it can be easily spread on a flat surface and the recycling work can be simplified.

なお本発明にかかる梱包箱は、その趣旨を変更することなく適宜変形して実施できる。たとえば、第一の引裂き線２１、第二の引裂き線２２、第三の引裂き線２３、第四の引裂き線２４および引裂き始点部２５を、後板部４０において、前板部２０と同様に形成してもよい。そうすると、これら引き裂き線を引き裂くことで、梱包箱１を開封できる。この場合、梱包箱１は底板部１０の前辺部１０ｃを支点として前板部２０および前天板部３０を展開できる（梱包箱１を開封できる。）。 In addition, the packaging box concerning this invention can be deform | transformed suitably and implemented, without changing the meaning. For example, the first tear line 21, the second tear line 22, the third tear line 23, the fourth tear line 24, and the tear start point 25 are formed in the rear plate portion 40 in the same manner as the front plate portion 20. May be. Then, the packaging box 1 can be opened by tearing these tear lines. In this case, the packaging box 1 can develop the front plate portion 20 and the front top plate portion 30 with the front side portion 10c of the bottom plate portion 10 as a fulcrum (the packaging box 1 can be opened).

１梱包箱
２ブランク
３箱体
１０底板部
１０ａ、１０ｂ底板部の右辺部、左辺部
１０ｃ底板部の前辺部（底板部と前板部との境界（折り目部））
１０ｄ底板部の後辺部（底板部と後板部との境界（折り目部））
２０前板部
３０前天板部
３２、３４第一の閉止爪、第二の閉止爪
３５後天板部
３６、３８後天板部の第一の閉止スリット、第二の閉止スリット
４０後板部
５０右側板部
５３右天板内フラップ
５５左側板部
５８左天板内フラップ DESCRIPTION OF SYMBOLS 1 Packing box 2 Blank 3 Box 10 Bottom plate part 10a, 10b Right side part of left plate part, Left side part 10c Front side part of bottom plate part (boundary (fold part) between bottom plate part and front plate part)
10d Rear side portion of bottom plate portion (boundary (folded portion) between bottom plate portion and rear plate portion)
20 Front plate portion 30 Front top plate portion 32, 34 First closing claw, second closing claw 35 Rear top plate portion 36, 38 First closing slit of rear top plate portion, second closing slit 40 Rear plate portion 50 Right side Plate 53 Flap in the right top plate 55 Left side plate 58 Flap in the left top plate

Claims

A substantially quadrilateral bottom plate portion, a front plate portion and a front top plate portion connected to the front of the bottom plate portion, a rear plate portion and a rear top plate portion connected to the rear of the bottom plate portion, and a right side of the bottom plate portion. A packaging box formed by bending a blank having a right side plate part and a left side plate part connected to the left side of the bottom plate part,
The front top plate has a plurality of closing claws formed at the tip,
The rear top plate has a plurality of closing slits, a right side closing claw formed on the right end side and a left side closing claw formed on the left end side,
The right side plate part has a right top plate flap connected to the side opposite to the bottom plate part, and a right side slit is formed in the vicinity of the boundary between the right side plate part and the right top plate flap,
The left side plate portion has a left top plate flap connected to the side facing the bottom plate portion, and left and right side slits are formed in the vicinity of the boundary between the left side plate portion and the left top plate flap. ,
Bending the right side plate and the left side plate in the same direction and substantially perpendicular to the bottom plate, and bending the right top plate flap and the left top plate flap,
Further, the rear plate portion is bent in the same direction and substantially perpendicular to the right and left plate portions with respect to the bottom plate portion, and the rear top plate portion is bent.
By locking the right side closing claw and the left side closing claw in a state bent toward the bottom plate part side with the right side slit and the left side slit, respectively, the rear plate part and Can form a box with the opposite sides open,
Furthermore, the front plate portion and the front top plate portion are bent in the same direction as the right side plate portion and the left side plate portion to cover the rear top plate portion, and a plurality of closing claws formed on the front top plate portion are arranged on the rear top plate portion. The packing box can be closed by locking to a plurality of closing slits possessed by
A packaging box, wherein a tear line for opening the closed packaging box is formed at least on the front plate portion.