JP2016000627A

JP2016000627A - paper box

Info

Publication number: JP2016000627A
Application number: JP2015103607A
Authority: JP
Inventors: 充香山; Mitsuru Kayama
Original assignee: Toppan Printing Co Ltd
Current assignee: Toppan Inc
Priority date: 2014-05-23
Filing date: 2015-05-21
Publication date: 2016-01-07
Anticipated expiration: 2035-05-21
Also published as: JP6582547B2

Abstract

PROBLEM TO BE SOLVED: To provide a paper box excellent in a design property by which varied surfaces exist in a box barrel part, by arranging a bending surface part of bending in the girth direction by juxtaposing a plurality of chamfer parts between a face plate and a face plate of the box barrel part so as not to cause winding in a side part of the chamfer parts, in the paper box for providing the bending surface part of juxtaposing the plurality of chamfer parts respectively partitioned by a weakening line composed of a half-cut line, between the face plate and the face plate in a barrel part of the paper box.SOLUTION: A weakening line 14 for partitioning a bending surface part 9 into a plurality of chamfer parts 10 of a small area, is formed as a half-cut line, and this half-cut line is formed by alternately arranging a cut-like part 16 of applying half-cut processing to a box packing material and a short-sized connection part 17 of not processing a half-cut to the box packing material, along a weakening line position 14 in the orthogonal direction to the girth direction.

Description

本発明は、紙箱、特に箱胴部の面板と面板との間に、複数面取り部を相互に隣り合わせて丸みのある曲がり面部を設けて、箱の外観意匠を向上させた紙箱に関するものである。 The present invention relates to a paper box, in particular, a paper box in which a plurality of chamfered portions are adjacent to each other between a face plate and a face plate of a box body portion to provide a rounded curved surface portion to improve the appearance design of the box.

従来から一枚のブランクを組み起こしてなる紙箱においては、特許文献１、２に示されているように箱外方に向けて角立つ縁部に沿って複数の面取り部を設けて指掛かりを良くしたり、二重壁の内側上縁部に沿って複数の面取り部を設けてその上縁部の折り部としての強度を高める工夫を施したものが提案されている。 Conventionally, in a paper box formed by assembling a single blank, as shown in Patent Documents 1 and 2, a plurality of chamfered portions are provided along edges that are angled toward the outside of the box, and a finger hook is provided. Improvements have been made, or a method has been proposed in which a plurality of chamfered portions are provided along the inner upper edge portion of the double wall to increase the strength of the upper edge portion as a folded portion.

また、箱胴部に面取り部を設けてデザイン性を高めるようにした紙箱も提案されている。例えば特許文献３には、ブランクにおける箱胴部となる部分に六角形状とした複数の面取り部を蜂の巣状に配置するとともに、その面取り部の間を弱化線としていて、紙箱の組み起こしによって弱化線それぞれが外方に向けて凸となるように折れ込んで、胴周り方向に隣り合う面取り部の間が弱化線位置で胴周り方向に折り曲げられており、この胴周り方向に並んだ小区域の面取り部の並びが胴周り方向に曲がることでデザイン性を向上させる箱が示されている。 In addition, a paper box has been proposed in which a chamfered portion is provided in the box body so as to enhance the design. For example, in Patent Document 3, a plurality of hexagonal chamfered portions are arranged in a honeycomb shape in a portion that becomes a box body portion in a blank, and a weakening line is formed between the chamfered portions, and a weakening line is generated by raising a paper box. Each is folded so that it protrudes outward, and the chamfer between adjacent chamfers in the trunk circumference direction is folded in the trunk circumference direction at the position of the weakening line. A box is shown in which chamfered portions are bent in the direction of the trunk to improve design.

特許第４７３５０９３号公報Japanese Patent No. 4735093 特許第４７３５０９４号公報Japanese Patent No. 4735094 特公昭５６−０３０２５７号公報Japanese Patent Publication No. 56-030257

紙箱の角立つ縁部に面取り部を配置する場合や箱胴部に面取り部を配置する場合にあっては、特許文献３に示されているように面取り部の周囲に弱化線を設けて、その弱化線の位置で折れ込みが行なわれる。そして面取り部それぞれを囲む弱化線は箱包材に折り罫、スリット、ミシン目を入れてなるものであり、折れが生じ易いように設けられていた。 In the case where a chamfered portion is arranged at a corner edge of a paper box or a chamfered portion is arranged in a box body, a weakening line is provided around the chamfered portion as shown in Patent Document 3, Folding is performed at the position of the weakening line. The weakening line surrounding each chamfered portion is formed by putting a crease, a slit, and a perforation in the box wrapping material, and is provided so as to be easily broken.

弱化線を形成するために箱包材に入れる上述した折り罫、スリット、ミシン目の内、スリットについては紙箱の内部と外部とがそのスリットを通じて連通することとなるので、スリットを採用する部分が限定される。そのため、箱胴部にその胴周り方向に複数の面取り部を並べ設ける構造の紙箱では弱化線にスリットを採用することができない。 The above-mentioned creases, slits, perforations, and slits in the box packaging material to form a weakening line, the inside and outside of the paper box communicate with each other through the slit, so the part that adopts the slit is limited Is done. For this reason, in a paper box having a structure in which a plurality of chamfered portions are arranged side by side on the box body in the direction around the body, a slit cannot be used for the weakening line.

また、通常の角柱状の紙箱での胴部のように隣り合う面板の間が９０度程度の角度を呈する折り曲げをして製函するときには、その隣り合う面板の間の折り位置での箱包材の折りに対する抗力が大きく減少して角立つ折り部分が生じるようになるが、上述したように小区域の隣り合う面取り部の間の弱化線を折り罫やミシン目によって構成した場合、面取り部間の胴周り方向での折り角度は鈍角であるため、弱化線位置での包材の折りに対する抗力が比較的大きく、製函の際に弱化線位置で適正な折れ込みが得られないという問題がある。もちろん、ミシン目については紙箱の内部と外部とが連通する点で問題とされることもある。 In addition, when boxing is performed by folding the adjacent face plates at an angle of about 90 degrees as in the case of a barrel in a normal prismatic paper box, the box packaging material at the folding position between the adjacent face plates is used. However, when the weakening line between adjacent chamfers in a small area is formed by creases or perforations, as described above, the resistance between the chamfers is greatly reduced. Since the folding angle in the direction of the body circumference is obtuse, the resistance against folding of the packaging material at the weakening line position is relatively large, and there is a problem that proper folding cannot be obtained at the weakening line position during box making is there. Of course, the perforation may be a problem in that the inside and outside of the paper box communicate with each other.

上記折り罫やミシン目と同様に紙箱のブランクを作成する際に入れることのできる弱化線には、これをハーフカット線で構成することが挙げられる。そして、ハーフカット線での弱化線を構成した場合には、その弱化線位置での包材の折りに対する抗力が比較的小さいものであるため、隣り合う面取り部がそれぞれハーフカット線の弱化線で囲まれたものとすることで、製函時に面取り部の間が適正に折れ込み、胴周り方向に隣り合う面取り部の間が設定通りに折れ曲がるようになる。さらに、面取り部それぞれの周辺も折れた弱化線となるため、面取り部それぞれの形状もはっきりと表現されるようになる。 As with the crease and perforation, the weakening line that can be entered when creating a blank for a paper box includes a half-cut line. And, when the weakening line at the half-cut line is configured, the resistance against folding of the packaging material at the weakening line position is relatively small, so the adjacent chamfered parts are the half-cut line weakening lines respectively. By being surrounded, the chamfered portions are appropriately folded during box making, and the chamfered portions adjacent to each other around the trunk are bent as set. Further, since the periphery of each chamfered portion is also a broken line, the shape of each chamfered portion is clearly expressed.

しかしながら、ハーフカット線は包材に貫通に至らない切り込みを入れたものであるために弱化線位置で箱包材の層間剥離が問題となる。特に胴周り方向に並ぶ面取り部の間では外方に向けて凸となる度合いが若干高くなるため、この胴周り方向に並ぶ面取り部の間の弱化線位置で包材が層間剥離して面取り部の辺部が大きく捲れ易いという不具合がある。 However, since the half-cut line is a notch that does not penetrate into the packaging material, delamination of the box packaging material becomes a problem at the weakened line position. In particular, since the degree of convex outward is slightly higher between the chamfered portions arranged in the drum circumference direction, the packaging material is delaminated at the position of the weakening line between the chamfered portions arranged in the drum circumference direction. There is a problem that the side part of the is large and easy to drown.

そこで本発明は上記事情に鑑み、紙箱の胴部における面板と面板との間に、それぞれがハーフカット線からなる弱化線で区分された複数の面取り部が並んでなる曲がり面部を設けた紙箱において、面取り部の辺部で捲れが生じないようにすることを課題とし、箱胴部の面板と面板との間に、前記複数の面取り部を並べ設けて胴周り方向に曲がりのある曲がり面部を配し、箱胴部に変化に富んだ面が存在するデザイン性に優れた紙箱を提供することを目的とするものである。 Therefore, in view of the above circumstances, the present invention provides a paper box provided with a curved surface portion in which a plurality of chamfered portions separated by weakening lines each consisting of a half-cut line are arranged between the face plate and the face plate in the body portion of the paper box. In order to prevent the edge of the chamfered portion from curling, a curved surface portion that is bent in the circumferential direction by arranging the plurality of chamfered portions between the faceplate and the faceplate of the box body portion. The purpose of the present invention is to provide a paper box that is excellent in design and has a variety of surfaces in the box body.

（請求項１の発明）
本発明は上記課題を考慮してなされたもので、面板が四方に並べ設けられて箱胴部が形成され、この箱胴部を形成する四方の面板の内、一つの面板とこの面板に隣り合う他の面板との間に、胴周り方向に曲がった曲がり面部が設けられている紙箱であり、
前記曲がり面部には、弱化線形状を波形にして胴周り方向に凸凹となる曲がりを胴周り方向に直交する方向に繰り返している複数の弱化線が入れられていて、
胴周り方向で隣り合う前記弱化線は、該弱化線の曲がりが前記胴周り方向で隣り合う弱化線の間を中心にして対称になるようにして配置され、かつ、前記弱化線の間を中心にして凸となる方向が向き合っている曲がりの頂部の部分が近接または重なるようにして配置されており、
前記胴周り方向で隣り合う弱化線の間で形成されている小区域の面取り部が、胴周り方向に直交する方向に複数並んでいて、
前記複数の面取り部が胴周り方向に直交する方向に並んでなる列を胴周り方向に一列以上にして並設することにより、前記曲がり面部が、弱化線を間にして隣り合う複数の前記面取り部に区分されていて、
前記胴周り方向に隣り合う面取り部の間の弱化線の折れにより、曲がり面部が胴周り方向に曲げられており、
前記弱化線はハーフカット線であって、このハーフカット線は、胴周り方向に直交する方向においての弱化線位置に沿って、箱包材にハーフカットの加工を施してなるカット線部と、ハーフカットが箱包材に対して非加工とされた短寸の繋ぎ部とを交互に配置しているものであることを特徴とする紙箱を提供して、上記課題を解消するものである。 (Invention of Claim 1)
The present invention has been made in consideration of the above problems, and face plates are arranged in four directions to form a box body, and one of the four face plates forming the box body is adjacent to the face plate. It is a paper box provided with a curved surface part that is bent in the direction around the trunk between other face plates that fit,
In the curved surface portion, a plurality of weakening lines that are repeated in a direction orthogonal to the trunk periphery direction are put in a shape that forms a waveform of the weakening line and is uneven in the trunk circumference direction,
The weakening lines adjacent in the waistline direction are arranged such that the bending of the weakening line is symmetrical about the weakening lines adjacent in the waistline direction, and is centered between the weakening lines. Are arranged so that the top part of the bend facing the convex direction is close or overlapping,
A plurality of chamfered portions of a small area formed between weakening lines adjacent in the waist circumference direction are arranged in a direction orthogonal to the waist circumference direction,
The plurality of chamfers are arranged adjacent to each other with a weakening line in between by arranging a plurality of chamfered portions arranged in a row perpendicular to the waistline direction in one or more rows in the waistline direction. Divided into parts,
The bent surface portion is bent in the waist direction by the breakage of the weakening line between the chamfers adjacent in the waist direction,
The weakening line is a half-cut line, and the half-cut line includes a cut line portion obtained by performing a half-cut process on the box packaging material along a position of the weakening line in a direction orthogonal to the trunk circumference direction, and a half-cut line. The present invention provides a paper box characterized in that cuts are alternately arranged with short-sized joints that are not processed with respect to the box packaging material, and solves the above problems.

（請求項２の発明）
本発明において、上記繋ぎ部は、弱化線における上記曲がりの頂部の部分に設けられていることが良好である。 (Invention of Claim 2)
In the present invention, it is preferable that the connecting portion is provided at a top portion of the bend in the weakening line.

（請求項３の発明）
また、本発明において、胴周り方向で隣り合う弱化線の間を中心にして凸となる方向が向き合っている上記曲がりの頂部の部分は、隙間を介した近接状態で対向配置されており、この対向配置された曲がりの頂部の部分それぞれに、上記繋ぎ部が設けられていることが良好である。 (Invention of Claim 3)
Further, in the present invention, the top portions of the bends facing in the direction of the convexity centering between the weakening lines adjacent in the waist circumference direction are opposed to each other in a proximity state with a gap between them. It is preferable that the connecting portion is provided in each of the top portions of the bends arranged to face each other.

（請求項４の発明）
また、本発明において、上記繋ぎ部は、胴周り方向に直交する方向においての上記弱化線とこの弱化線に胴周り方向で隣り合う弱化線とが重なる部分に設けられていることが良好である。 (Invention of Claim 4)
In the present invention, it is preferable that the connecting portion is provided in a portion where the weakening line in a direction orthogonal to the trunk direction and the weakening line adjacent to the weakening line in the trunk direction overlap. .

（請求項５の発明）
また、本発明において、上記曲がり面部には、胴周り方向と直交する方向での位置を同じにして胴周り方向に間隔をおいて配置されている複数の上記繋ぎ部とこの繋ぎ部の間に位置する上記面取り部の繋ぎ部間部とが胴周り方向に交互にして並んでなるハーフカット非加工の線状補強部が設けられていて、
前記線状補強部は、曲がり面部における上記カット線部の鋭角な折れを規制するものであることが良好である。 (Invention of Claim 5)
Further, in the present invention, the bent surface portion has the same position in the direction orthogonal to the trunk periphery direction and the plurality of joint portions arranged at intervals in the trunk periphery direction and the joint portions. A half-cut non-processed linear reinforcing portion is provided in which the connecting portions between the chamfered portions that are located are alternately arranged in the circumferential direction of the trunk,
It is preferable that the linear reinforcing portion regulates an acute bend of the cut line portion in the bent surface portion.

（請求項６の発明）
また、本発明において、箱の天面の一隅と底面の一隅との少なくとも一方に上記曲がり面部の端部が非連続の状態で近接していて、曲がり面部の端部が近接する前記一隅側から前記曲がり面部の端部に向けて短寸の折り罫が入れられてなる補強手段を、前記曲がり面部の端部とこの前記曲がり面部の端部が近接する前記一隅との間に設けることが良好である。 (Invention of Claim 6)
Further, in the present invention, the end of the bent surface portion is adjacent to at least one of the top corner and the bottom corner of the box in a discontinuous state, and the end of the bent surface portion is close to the one corner side. It is preferable to provide reinforcing means in which a short crease is put toward the end of the bent surface portion between the end portion of the bent surface portion and the one corner where the end portion of the bent surface portion is adjacent. It is.

（請求項１の発明の効果）
請求項１の発明によれば、複数が並び設けられることによって曲がり面部を構成する面取り部の辺部となる弱化線が、ハーフカットの加工を施したカット線部と繋ぎ部とが交互に並んでなるものであるので、曲がり面部が曲がる際に弱化線位置で折れ込みが行なわれても、繋ぎ部がカット線部で層間剥離が進むのを抑えるようになり、面取り部辺部に捲れが生じない。そのため、弱化線位置が適正に折れて面取り部それぞれの形状が明確になった曲がり面部が箱胴部に形成されることとなり、紙箱の外観が頗る向上するようになる。 (Effect of the invention of claim 1)
According to invention of Claim 1, the weakening line used as the side part of the chamfering part which comprises a curved surface part by arranging two or more is arranged, and the cut line part which gave the half cut process, and the connection part are located in a line. Therefore, even if bending is performed at the weakened line position when the bent surface part bends, it will prevent the delamination from proceeding at the cut line part, and the chamfered part will be wrinkled. Does not occur. For this reason, a bent surface portion in which the weakening line position is appropriately folded and the shape of each chamfered portion becomes clear is formed in the box body portion, and the appearance of the paper box is greatly improved.

（請求項２の発明の効果）
請求項２の発明によれば、繋ぎ部が、弱化線における曲がりの頂部の部分に設けられているので、箱外方に向けて凸となって折れ出る度合いの高い部分で包材が捲れるのを抑えるようになり、箱外方に向けて凸となって折れ出る度合いの高い前記部分の外観を損なうことがない。 (Effect of the invention of claim 2)
According to the invention of claim 2, since the connecting portion is provided at the top portion of the bend in the weakening line, the packaging material is drawn at a portion that protrudes outwardly from the box and has a high degree of folding. This prevents the appearance of the portion having a high degree of convexity toward the outside of the box from being damaged.

（請求項３の発明の効果）
請求項３の発明によれば、凸となる方向が向き合っている曲がりの頂部の部分が、その曲がりの頂部の部分の間に隙間を介した近接状態で対向配置されて、この対向配置された曲がりの頂部の部分それぞれに、繋ぎ部が設けられているので、箱外方に向けて凸となって折れ出る度合いの高い部分で包材がめくれるのを抑え、箱外方に向けて凸となって折れ出る度合いの高い部分の外観を損なうことがない。 (Effect of the invention of claim 3)
According to the invention of claim 3, the top portions of the bends in which the convex directions face each other are arranged to face each other with a gap between the top portions of the bends. Since the connecting part is provided at each of the top part of the bend, it suppresses the packaging material from turning over at a part that protrudes outwards and has a high degree of folding, and is convex toward the outside of the box. It does not impair the appearance of the part that is highly bent.

（請求項４の発明の効果）
請求項４の発明によれば、繋ぎ部が、胴周り方向に直交する方向においての弱化線とこの弱化線に胴周り方向で隣り合う弱化線とが重なる部分に設けられているので、その重なる部分で包材の層間剥離が進むのを抑え、弱化線位置を重ね合わせて隣り合う面取り部の間でめくれが生じず、その隣り合う面取り部の間が適正に折れるようになる。 (Effect of the invention of claim 4)
According to the invention of claim 4, the connecting portion is provided in a portion where the weakening line in the direction orthogonal to the trunk circumference direction and the weakening line adjacent to the weakening line in the trunk circumference direction overlap. The progress of delamination of the wrapping material at the portion is suppressed, the weakening line positions are overlapped, and no turning is generated between the adjacent chamfered portions, and the adjacent chamfered portions are appropriately folded.

（請求項５の発明の効果）
請求項５の発明によれば、曲がり面部に、この曲がり面部におけるカット線部の鋭角な折れを規制する線状補強部が設けられているので、曲がり面部の曲がり形状が安定するという利点がある。 (Effect of the invention of claim 5)
According to invention of Claim 5, since the linear reinforcement part which regulates the acute bend of the cut line part in this bending surface part is provided in the bending surface part, there exists an advantage that the bending shape of a bending surface part is stabilized. .

（請求項６の発明の効果）
請求項６の発明によれば、曲がり面部の端部が箱の天面の一隅や底面の一隅に近接する部分において、天面の一隅や底面の一隅とこの一隅に近接する曲がり面部の端部との間に折り罫による補強手段が設けられているので、この補強手段の部分での箱包材における層間剥離を生じさせず、この紙箱の取扱いで、天面の一隅側や底面の一隅側に衝撃が及ぶようなことがあっても、その一隅に近接する曲がり面部の端部での捲れによる外観の乱れを防止することができる。 (Effect of the invention of claim 6)
According to invention of Claim 6, in the part where the edge part of a curved surface part adjoins one corner of the top surface of a box, or one corner of a bottom face, one edge of a top surface, one corner of a bottom face, and the edge part of the curved surface part which adjoins this one corner Since there is a crease reinforcing means between the two, the delamination of the box packaging material does not occur at the reinforcing means, and the paper box can be handled at one corner of the top or bottom. Even if an impact occurs, it is possible to prevent the appearance from being disturbed due to the bending at the end of the curved surface portion close to the corner.

本発明の紙箱に係る第一の実施の例を示すもので、（ａ）は正面側から見た状態を示す説明図、（ｂ）は左側方から見た状態を示す説明図、（ｃ）は右側方から見た状態を示す説明図、（ｄ）は上方から見た状態を示す説明図、（ｅ）は下方から見た状態を示す説明図、（ｆ）は背面側から見た状態を示す説明図である。The example of 1st implementation which concerns on the paper box of this invention is shown, (a) is explanatory drawing which shows the state seen from the front side, (b) is explanatory drawing which shows the state seen from the left side, (c) Is an explanatory view showing a state seen from the right side, (d) is an explanatory view showing a state seen from above, (e) is an explanatory view showing a state seen from below, and (f) is a state seen from the back side. It is explanatory drawing which shows. 第一の実施の例を展開したブランクの状態で示す説明図である。It is explanatory drawing shown in the blank state which expand | deployed the example of 1st Example. 第一の実施の例における左側曲がり面部の上端側を一部切り欠いた状態で示す説明図である。It is explanatory drawing shown in the state which notched the upper end side of the left side curved surface part in the example of 1st Example partially. 第二の実施の例を示すもので、（ａ）は正面側から見た状態を示す説明図、（ｂ）は左側方から見た状態を示す説明図、（ｃ）は右側方から見た状態を示す説明図、（ｄ）は上方から見た状態を示す説明図、（ｅ）は下方から見た状態を示す説明図、（ｆ）は背面側から見た状態を示す説明図である。The example of 2nd Example is shown, (a) is explanatory drawing which shows the state seen from the front side, (b) is explanatory drawing which shows the state seen from the left side, (c) is seen from the right side (D) is an explanatory view showing a state seen from above, (e) is an explanatory view showing a state seen from below, and (f) is an explanatory view showing a state seen from the back side. . 第二の実施の例を展開したブランクの状態で示す説明図である。It is explanatory drawing shown in the blank state which expand | deployed the example of 2nd Example. 第三の実施の例を示すもので、（ａ）は正面側から見た状態を示す説明図、（ｂ）は左側方から見た状態を示す説明図、（ｃ）は右側方から見た状態を示す説明図、（ｄ）は上方から見た状態を示す説明図、（ｅ）は下方から見た状態を示す説明図、（ｆ）は背面側から見た状態を示す説明図である。The example of 3rd Example is shown, (a) is explanatory drawing which shows the state seen from the front side, (b) is explanatory drawing which shows the state seen from the left side, (c) is seen from the right side (D) is an explanatory view showing a state seen from above, (e) is an explanatory view showing a state seen from below, and (f) is an explanatory view showing a state seen from the back side. . 第三の実施の例を展開したブランクの状態で示す説明図である。It is explanatory drawing shown in the state of the blank which expand | deployed the example of 3rd Example. 第四の実施の例を示すもので、（ａ）は正面側から見た状態を示す説明図、（ｂ）は左側方から見た状態を示す説明図、（ｃ）は右側方から見た状態を示す説明図、（ｄ）は上方から見た状態を示す説明図、（ｅ）は下方から見た状態を示す説明図、（ｆ）は背面側から見た状態を示す説明図である。The example of 4th Example is shown, (a) is explanatory drawing which shows the state seen from the front side, (b) is explanatory drawing which shows the state seen from the left side, (c) is seen from the right side (D) is an explanatory view showing a state seen from above, (e) is an explanatory view showing a state seen from below, and (f) is an explanatory view showing a state seen from the back side. . 第四の実施の例を展開したブランクの状態で示す説明図である。It is explanatory drawing shown in the state of the blank which expand | deployed the example of 4th Example. 第五の実施の例を示すもので、（ａ）は正面側から見た状態を示す説明図、（ｂ）は左側方から見た状態を示す説明図、（ｃ）は右側方から見た状態を示す説明図、（ｄ）は上方から見た状態を示す説明図、（ｅ）は下方から見た状態を示す説明図、（ｆ）は背面側から見た状態を示す説明図である。It shows an example of the fifth embodiment, (a) is an explanatory diagram showing the state seen from the front side, (b) is an explanatory diagram showing the state seen from the left side, (c) is seen from the right side (D) is an explanatory view showing a state seen from above, (e) is an explanatory view showing a state seen from below, and (f) is an explanatory view showing a state seen from the back side. . 第五の実施の例を展開したブランクの状態で示す説明図である。It is explanatory drawing shown in the state of the blank which expand | deployed the example of 5th Example. 第六の実施の例を示すもので、（ａ）は正面側から見た状態を示す説明図、（ｂ）は左側方から見た状態を示す説明図、（ｃ）は右側方から見た状態を示す説明図、（ｄ）は上方から見た状態を示す説明図、（ｅ）は下方から見た状態を示す説明図、（ｆ）は背面側から見た状態を示す説明図である。It shows an example of the sixth embodiment, (a) is an explanatory diagram showing the state seen from the front side, (b) is an explanatory diagram showing the state seen from the left side, (c) is seen from the right side (D) is an explanatory view showing a state seen from above, (e) is an explanatory view showing a state seen from below, and (f) is an explanatory view showing a state seen from the back side. . 第六の実施の例を展開したブランクの状態で示す説明図である。It is explanatory drawing shown in the state of the blank which expand | deployed the example of 6th Example. 補強手段を設けた例をブランクでの一部拡大した状態で示す説明図である。It is explanatory drawing which shows the example which provided the reinforcement means in the state which expanded partially with the blank.

（第一の実施の例）
つぎに本発明を図１から図１４に示す実施の例に基づいて詳細に説明する。図１から図３は第一の実施の例を示している。図中１は一枚のブランクから組み起こして得られる紙箱であり、ブランクにおける糊代となる部分を対応する位置に貼り付けて扁平なスリーブを作成し、これを組み起こすことで六方に面板を配して略ブロック状の形状とした紙箱である。 (Example of the first implementation)
Next, the present invention will be described in detail based on the embodiments shown in FIGS. 1 to 3 show a first embodiment. In the figure, 1 is a paper box obtained by assembling from a single blank, and a flat sleeve is created by pasting the blanking portion of the blank to the corresponding position, and the face plate is formed in six directions by assembling this. It is a paper box arranged in a substantially block shape.

紙箱１は四方に正面板２、背面板３、左右の側面板４、５を配してこれら面板を胴周り方向に並べ設けて箱胴部６とし、この箱胴部６の上部を天面閉鎖部７とし、箱胴部６の下部を底面閉鎖部８としている。 The paper box 1 has a front plate 2, a back plate 3, left and right side plates 4, 5 arranged in four directions, and these face plates are arranged side by side in the trunk direction to form a box body portion 6. The upper portion of the box body portion 6 is a top surface. A closed portion 7 is used, and a lower portion of the box body 6 is a bottom closed portion 8.

（天面閉鎖部、底面閉鎖部）
上記天面閉鎖部７は、通常の紙箱の構造と同様に、左右の側面板４、５の上端縁に連接の上フラップである天面閉鎖部構成部材７０を折り倒し、正面板２の上端縁に連接の天面板である天面閉鎖部構成部材７１を折り倒して天面閉鎖部構成部材７０に重ね、その天面閉鎖部構成部材７１に連接の差し込み片７２を、背面板３と上フラップの天面閉鎖部構成部材７０との間に差し入れて、紙箱の天面を閉じている。 (Top closure, bottom closure)
Similar to the structure of a normal paper box, the top surface closing portion 7 folds the top surface closing portion constituting member 70 which is an upper flap connected to the upper end edges of the left and right side plates 4, 5, and The top surface closing portion constituting member 71 which is a top plate connected to the edge is folded down and overlapped with the top surface closing portion constituting member 70, and the connecting piece 72 connected to the top surface closing portion constituting member 71 is connected to the back plate 3 and the top plate. The top surface of the paper box is closed by inserting it between the top surface closing portion constituting member 70 of the flap.

また、底面閉鎖部８も通常の紙箱での構造と同様であって、側面板４、５の下端縁に連接の下フラップである底面閉鎖部構成部材８０を折り倒し、正面板２の下端縁に連接の底面板である底面閉鎖部構成部材８１を折り倒して底面閉鎖部構成部材８０に重ね、その底面閉鎖部構成部材８１に連接の差し込み片８２を、背面板３と底面閉鎖部構成部材８０（下フラップ）との間に差し入れて、紙箱の底面を閉じている。 Further, the bottom closing part 8 is also similar to the structure in a normal paper box, and the bottom closing part constituting member 80 which is a lower flap connected to the lower end edge of the side plates 4 and 5 is folded down, and the lower end edge of the front board 2 The bottom surface closing part constituting member 81 which is a connected bottom plate is folded over and overlapped with the bottom surface closing part constituting member 80, and the connecting piece 82 connected to the bottom surface closing part constituting member 81 is connected to the back plate 3 and the bottom surface closing part constituting member. The bottom of the paper box is closed by inserting it between 80 (lower flap).

（箱胴部）
箱胴部６には、上記正面板２と左側面板４との間、及び正面板２と右側面板５との間に曲がり面部９が設けられている（図２参照）。この曲がり面部９それぞれは小区域の複数の面取り部１０を隣接させて形成しているものであり、第一の実施の例にあっては、前記複数の面取り部１０を並べ設けてなる曲がり面部９が胴周り方向と直交する方向、即ち、箱胴部の上端から下端に亘って位置している（図１）。 (Box body)
The box body 6 is provided with a curved surface 9 between the front plate 2 and the left side plate 4 and between the front plate 2 and the right side plate 5 (see FIG. 2). Each of the curved surface portions 9 is formed by adjoining a plurality of chamfered portions 10 in a small area. In the first embodiment, the curved surface portion is formed by arranging the plurality of chamfered portions 10 side by side. 9 is located in a direction orthogonal to the waist direction, that is, from the upper end to the lower end of the box body (FIG. 1).

（曲がり面部）
後述するように曲がり面部９は、胴周り方向での断面において少なくとも一面の面取り部１０が位置するように形成されており、正面板２と曲がり面部９との間が胴周り方向に折れ、また、曲がり面部９と左右側面板４、５との間も胴周り方向に折れ、加えて、曲がり面部９での胴周り方向に隣り合う面取り部１０の間が胴周り方向に折れ込まれており、これによって曲がり面部９自体が、胴周り方向の複数個所で鈍角な折りが行なわれて構成された丸味がある面としている。 (Curved surface)
As will be described later, the bent surface portion 9 is formed such that at least one chamfered portion 10 is located in the cross section in the waist circumference direction, the front plate 2 and the bent surface portion 9 are bent in the waist circumference direction, and The bent surface portion 9 and the left and right side plates 4, 5 are also folded in the trunk direction, and in addition, the chamfered portions 10 adjacent to each other in the curved surface portion 9 are folded in the trunk direction. As a result, the curved surface portion 9 itself has a rounded surface formed by obtuse folds at a plurality of locations around the trunk.

面取り部１０それぞれは、箱高さ方向（胴周り方向に直交する方向）の両端が尖頭の略紡錘形としている。そして、面取り部１０を箱高さ方向に並び設けてなる縦の列が胴周り方向に三列にして配置され、各列における太部ａ（面取り部の中央部分）が、隣りの列の細部ｂ（面取り部の尖頭が対向している部分）に対応するように面取り部１０が密にして並べ設けられている（図３参照）。 Each of the chamfered portions 10 has a substantially spindle shape in which both ends in the box height direction (direction orthogonal to the waist direction) are pointed. And the vertical row | line | column which arranges the chamfering part 10 in the box height direction is arranged in three rows | line | columns around a trunk | drum direction, and the thick part a (center part of a chamfering part) in each row | line | column is the detail of an adjacent row | line | column. The chamfered portions 10 are densely arranged side by side so as to correspond to b (portion where the chamfers of the chamfered portions face each other) (see FIG. 3).

これによって、曲がり面部９では、箱高さ方向に対して斜めとなる方向に面取り部１０が近接し合うとともに、胴周り方向においても前記細部ｂを間にして面取り部１０が近接し合う配置としている。前記細部ｂは胴周り方向での幅は極めて狭いものとされており、胴周り方向で前記面取り部１０が並ぶ部分にあっては、図示されているように相対する面取り部１０の間を極めて狭くした状態で隣り合っている箇所がある。 As a result, in the curved surface portion 9, the chamfered portions 10 are close to each other in a direction inclined with respect to the box height direction, and the chamfered portions 10 are also close to each other in the trunk periphery direction with the details b in between. Yes. The detail b has a very narrow width in the direction of the waist, and in the portion where the chamfered portions 10 are arranged in the direction of the waist, as shown in FIG. There are places that are next to each other in a narrowed state.

この第一の実施の例における曲がり面部９では、箱高さ方向に面取り部１０を並び設けてなる三つの列の内、胴周り方向で中央となる縦の列が最長の列とされており、曲がり面部９での上端９ａをこの中央の列での尖頭の部分とし、また、下端９ｂをこの中央の列での尖頭の部分としている。 In the curved surface portion 9 in the first embodiment, the longest column is the vertical column that is the center in the trunk direction among the three columns in which the chamfered portions 10 are arranged in the box height direction. The upper end 9a of the curved surface portion 9 is a pointed portion in the central row, and the lower end 9b is a pointed portion in the central row.

図示されているように曲がり面部９の上記上端９ａのみが天面の一隅Ｘに達しており、下端９ｂのみが底面の一隅Ｙに達している。そのため、箱胴部での正面板２から左側面板４及び右側面板５にかけて曲がり面部９で形成される丸みが、天面閉鎖部７と底面閉鎖部８の矩形形状に影響を及ぼすことはない。 As shown in the drawing, only the upper end 9a of the curved surface portion 9 reaches one corner X of the top surface, and only the lower end 9b reaches one corner Y of the bottom surface. Therefore, the roundness formed by the curved surface portion 9 from the front plate 2 to the left side surface plate 4 and the right side surface plate 5 at the box body does not affect the rectangular shape of the top surface closing portion 7 and the bottom surface closing portion 8.

（ブランク）
図２は第一の実施の例の紙箱１の展開状態を、組み起こしてこの紙箱１を得ることのできるブランク１１にて示している。なお、ブランク１１は箱外面となる側が図示されている。正面板２と左側面板４との間には上記曲がり面部９が設けられているとともに、正面板２と右側面板５との間にも曲がり面部９が設けられている。曲がり面部９は紙箱１を正面から見たときの左右それぞれに多面により構成された丸みを形成するためのもので、そのため曲がり面部９の領域が正面板２の中央側や左右側面板４、５それぞれの中央側に深く入り込む形状とはしていない。 (blank)
FIG. 2 shows the unfolded state of the paper box 1 of the first embodiment by a blank 11 that can be assembled to obtain the paper box 1. Note that the blank 11 is shown on the side that is the outer surface of the box. The bent surface portion 9 is provided between the front plate 2 and the left side plate 4, and the bent surface portion 9 is also provided between the front plate 2 and the right side plate 5. The bent surface portion 9 is for forming rounds formed by multiple surfaces on the left and right when the paper box 1 is viewed from the front. Therefore, the area of the bent surface portion 9 is the center side of the front plate 2 and the left and right side plates 4, 5. It does not have a shape that penetrates deep into the center.

上記左側面板４の正面板側とは反対側に背面板３が連接され、この背面板３に糊代片１２が連接され、この糊代片１２が右側面板５の箱内面側での対応位置に貼り付けられる。 A back plate 3 is connected to the side opposite to the front plate side of the left side plate 4, and a paste margin piece 12 is connected to the back plate 3, and this paste margin piece 12 is a corresponding position on the inner surface side of the right side plate 5. Is pasted.

正面板２、左右側面板４、５の上端縁に上述したように天面閉鎖部構成部材（天面板）７１、天面閉鎖部構成部材７０が連接されて、前記天面閉鎖部構成部材７１に差し込み片７２が連接されている。また、正面板２、左右側面板４、５の下端縁に底面閉鎖部構成部材（底面板）８１、底面閉鎖部構成部材８０が連接されて、底面閉鎖部構成部材８１に差し込み片８２が連接されている。 As described above, the top surface closing portion constituting member (top surface plate) 71 and the top surface closing portion constituting member 70 are connected to the upper end edges of the front plate 2 and the left and right side plates 4, 5. The insertion piece 72 is connected to the. Further, a bottom closing member (bottom plate) 81 and a bottom closing member 80 are connected to the lower edges of the front plate 2 and the left and right side plates 4 and 5, and an insertion piece 82 is connected to the bottom closing member 81. Has been.

この第一の実施の例の紙箱１ではその製函の前段階の形態として、糊代片１２を右側面板５に貼り付けた状態で、正面板２と右側面板５との間を直線状に折って全体を扁平のスリーブ形態にすることができない。そこで、この紙箱１を得るためのブランクで示されているように、天面閉鎖部構成部材７０と左側面４と底面閉鎖部構成部材８０を通る折り部１３で折られ、天面閉鎖部構成部材７０と右側面５と底面閉鎖部構成部材８０を通る折り部１３で折られるようにしている。なお、折れた折り部１３は製函に際して展開される。 In the paper box 1 of the first embodiment, as a form of the previous stage of the box making, a straight line is formed between the front plate 2 and the right side plate 5 in a state where the adhesive margin piece 12 is attached to the right side plate 5. It cannot be folded into a flat sleeve. Therefore, as shown by the blank for obtaining the paper box 1, the top surface closing portion constituting member 70, the left side surface 4, and the bottom closing portion constituting member 80 are folded at the folding portion 13 to form the top surface closing portion configuration. It is made to fold by the folding part 13 which passes the member 70, the right side surface 5, and the bottom face closing part structural member 80. The folded part 13 is unfolded during box making.

（弱化線）
上記曲がり面部９には、周辺が折れとなる複数の上記面取り部１０を形成するために、それぞれ胴周り方向と直交する方向にして複数本の弱化線１４が入れられている。前記弱化線１４はハーフカット線であって、このハーフカット線は、胴周り方向に直交する方向（箱高さ方向）においての弱化線位置１５に沿って、箱包材に箱外方側からハーフカットの加工を施してなるカット線部１６と、ハーフカットを箱包材に対して非加工にした（即ち、ハーフカットの加工を施していない）短寸の繋ぎ部１７とを交互に配置しているものである。この第一の実施の例においては、面取り部９の縦の並びの列を三列にして形成するために、箱高さ方向にした弱化線１４を四本にして入れられている（図３）。 (Weak line)
In the bent surface portion 9, a plurality of weakening lines 14 are inserted in directions perpendicular to the trunk circumference direction in order to form a plurality of the chamfered portions 10 whose periphery is bent. The weakening line 14 is a half-cut line, and this half-cut line is half-cut from the outside of the box along the weakening line position 15 in the direction (box height direction) perpendicular to the waist direction. The cut line portions 16 formed by the cut processing and the short connecting portions 17 in which the half cut is not processed with respect to the box packaging material (that is, the half cut processing is not performed) are alternately arranged. It is what. In this first embodiment, four weakening lines 14 in the box height direction are inserted in order to form three vertical rows of chamfered portions 9 (FIG. 3). ).

（曲がり）
弱化線１４は、弱化線形状を波形にして胴周り方向に凸凹となる曲がり１８を箱高さ方向に繰り返しているものである。波形としてはサインウェーブのような緩やかな山形状部分と谷形状部分とが交互に繰り返されている形状や、矩形波や鋸刃のような形状、さらに台形状の出入により凸凹を形成した形状など各種のものがある。このように胴周り方向で凸となる曲がり１８のその凸となる向きを、正逆交互にして箱高さ方向に繰り返して配置した形状になればよいものである。この第一の実施の例において、弱化線１４それぞれは、図示のように曲がり１８を胴周り方向に凸となる弧状としており、曲がり１８の凸となる向きが正逆交互にして箱高さ方向に繰り返した形状である。 (Bend)
The weakening line 14 is obtained by repeating a bending 18 having a waveform of the weakening line in a corrugated direction in a box height direction. As a waveform, a shape such as a sine wave where gentle mountain-shaped portions and valley-shaped portions are alternately repeated, a shape like a rectangular wave or a saw blade, and a shape where irregularities are formed by entering and exiting a trapezoidal shape, etc. There are various things. In this way, it is only necessary to form the bend 18 that is convex in the circumferential direction of the body 18 in a shape that is repeatedly arranged in the box height direction alternately forward and reverse. In the first embodiment, each of the weakening lines 14 has an arc shape in which the bend 18 is convex in the trunk direction as shown in the figure, and the direction in which the bend 18 is convex is alternately reversed in the box height direction. The shape was repeated.

紡錘形状の面取り部１０を形成するために、胴周り方向で隣り合う弱化線１４が、該弱化線１４の曲がり１８がこの胴周り方向で隣り合う弱化線１４の間を中心にして対称になるようにして配置されている。さらに前記弱化線１４の間を中心にして凸となる方向が向き合っている曲がり１８の頂部１９の部分が近接して配置されている。相対する曲がり１８の頂部１９が近接することで、複数の面取り部１０が縦に並んでなる列の上記細部ｂが形成されている。 In order to form the spindle-shaped chamfered portion 10, the weakening lines 14 adjacent to each other in the circumferential direction of the cylinder are symmetric with respect to the bends 18 of the weakening lines 14 around the adjacent weakening lines 14 in the circumferential direction of the cylinder. It is arranged like that. Furthermore, the apex portion 19 of the bend 18 in which the convex direction is centered between the weakening lines 14 is disposed in proximity. When the top portions 19 of the opposing bends 18 are close to each other, the above-described details b in a row in which the plurality of chamfered portions 10 are arranged vertically are formed.

そのため、列における一つの細部ｂから隣り（箱高さ方向での隣り）の細部ｂまでに亘る範囲の弱化線１４が相対することで紡錘形状とした一つの面取り部１０が形成されており、胴周り方向で隣り合う二本の弱化線１４により前記面取り部１０が箱高さ方向に複数並び設けられている。ブランクの形態で示すように四本の弱化線１４を入れたこの曲がり面部９では、複数の面取り部１０を箱高さ方向に並び設けてなる縦の列が三列形成されていて、上述したように面取り部１０は、箱高さ方向に対し斜めとなる方向で弱化線１４を介して隣りの列の面取り部１０に近接し合い、また、二つの面取り部１０が上記細部ｂを介する形で胴周り方向に並んでいる部分も有している。 Therefore, one chamfered portion 10 having a spindle shape is formed by the weakening lines 14 in the range from one detail b in the row to the next detail b (adjacent in the box height direction). A plurality of the chamfered portions 10 are provided side by side in the box height direction by two weakening lines 14 adjacent in the waist circumference direction. As shown in the form of a blank, in this curved surface portion 9 with four weakening lines 14, three vertical rows formed by arranging a plurality of chamfered portions 10 in the box height direction are formed as described above. Thus, the chamfered portions 10 are adjacent to the chamfered portions 10 in the adjacent rows via the weakening lines 14 in a direction oblique to the height direction of the box, and the two chamfered portions 10 are formed via the details b. It also has a portion lined up in the direction of the trunk.

このように曲がり面部９は小区域の複数の面取り部１０に区画されてなるものとしており、ブランクから扁平なスリーブ形態とされたものを製函する際に、曲がり面部９と正面板２との間の弱化線１４、曲がり面部９と左右の側面板４、５との間の弱化線１４で折り込みされるとともに、曲がり面部９での上記各面取り部１０を囲むように位置する弱化線１４が、その弱化線位置で箱外方に凸となる折れ込みをして、斜め方向及び胴周り方向に近接した状態で並ぶ面取り部１０の間が胴周り方向に折れている。 In this way, the curved surface portion 9 is divided into a plurality of chamfered portions 10 in a small area. When a flat sleeve is formed from a blank, the curved surface portion 9 and the front plate 2 are formed. Between the weakening line 14 and the weakening line 14 between the curved surface portion 9 and the left and right side plates 4, 5, and the weakening line 14 positioned so as to surround the chamfered portions 10 at the curved surface portion 9. In the weakening line position, a fold that protrudes outward from the box is formed, and a portion between the chamfered portions 10 arranged in the oblique direction and in the vicinity of the trunk circumference direction is folded in the trunk circumference direction.

よって、曲がり面部９も胴周り方向の断面位置での複数個所で胴周り方向に鈍角な折れ角度で折れていて、即ち、前記面板との間で鈍角な折れ角度で折れているとともに、面取り部１０の間で鈍角な折れ角度で折れていることにより、曲がり面部９自体が丸みを呈する状態にして胴周り方向に曲がっている。 Therefore, the bent surface portion 9 is also bent at an obtuse angle at the trunk circumference direction at a plurality of positions at the cross-sectional position in the trunk circumference direction, that is, at an obtuse angle between the face plate and the chamfered portion. By being bent at an obtuse angle between 10, the bent surface portion 9 itself is rounded and bent in the direction around the trunk.

（繋ぎ部）
曲がり面部９において、上記弱化線１４における曲がり１８の頂部１９の部分に繋ぎ部１７が設けられている。そのため、胴周り方向で隣り合う弱化線１４の間を中心にして凸となる方向が向き合っている状態となって隙間を介した近接状態で対向配置されている曲がり１８の頂部１９の部分、即ち、面取り部１０が箱高さ方向に並んでなる列での上記細部ｂを形成している曲がり１８の頂部１９の部分にも、それぞれ繋ぎ部１７が位置しており、図３に示すようにその部分での二つの繋ぎ部１７は隙間を介して胴周り方向に対向する状態に配置されている。 (Connection part)
In the bent surface portion 9, a connecting portion 17 is provided at the top portion 19 of the bend 18 in the weakening line 14. Therefore, the portion of the top portion 19 of the bend 18 that is opposed to each other in a close state with a gap between the adjacent weakening lines 14 in the circumferential direction and facing each other in a close state through a gap, that is, Further, the connecting portions 17 are also located at the top portions 19 of the bends 18 forming the details b in the row in which the chamfered portions 10 are arranged in the box height direction, as shown in FIG. The two connecting portions 17 at that portion are arranged so as to face each other around the trunk through a gap.

このように曲がり面部９に入れられて各面取り部１０の辺部を形成する弱化線１４での曲がり１８の頂部１９の部分は、箱外方に向けて凸となる折れ込みの度合いが若干高い部分となっているが、この頂部１９の部分それぞれに繋ぎ部１７が設けられていることから、この弱化線位置での包材の層間剥離が生じず、面取り部１０の胴周り方向に凸となる形状の辺部で包材が捲れるのを抑えているとともに、繋ぎ部１７に連続するカット線部１６に対してもハーフカットによる包材を貫通しない切れ目の部分が過度に開かないように作用して、このカット線部１６での層間剥離が生じるのを抑えている。 In this way, the portion of the top portion 19 of the bend 18 at the weakening line 14 that is inserted into the bend surface portion 9 and forms the side portion of each chamfered portion 10 has a slightly high degree of folding that becomes convex toward the outside of the box. Since the connecting portion 17 is provided in each of the top 19 portions, no delamination of the packaging material occurs at the weakening line position, and the chamfered portion 10 is convex in the circumferential direction. In addition to suppressing the wrapping of the wrapping material at the side of the shape, the cut line portion 16 that does not penetrate the wrapping material by the half cut is not opened excessively with respect to the cut line portion 16 that continues to the connecting portion 17. It acts to suppress the occurrence of delamination at the cut line portion 16.

（線状補強部）
繋ぎ部１７は、箱高さ方向に沿う弱化線位置１５上において曲がり１８の頂部１９の部分に設けられているとともに、弱化線位置１５に沿って並ぶ頂部１９と頂部１９との中間部分にもこの繋ぎ部１７が設けられて、前記弱化線位置１５に沿って等間隔にしている。これによって、曲がり面部９全体においては、箱高さ方向での位置を同じにした繋ぎ部１７が胴周り方向に間隔をおいて配置されてなる繋ぎ部１７の並びの列２０が、箱高さ方向に間隔をおいて複数存在しているものとなっている。 (Linear reinforcement)
The connecting portion 17 is provided at a portion of the top portion 19 of the bend 18 on the weakening line position 15 along the box height direction, and also at an intermediate portion between the top portion 19 and the top portion 19 aligned along the weakening line position 15. This connecting portion 17 is provided and is equally spaced along the weakening line position 15. Accordingly, in the entire bent surface portion 9, the row 20 of the row of the connecting portions 17 in which the connecting portions 17 having the same position in the box height direction are arranged at intervals in the trunk circumferential direction has the box height. There are several in the direction with an interval.

上述したように、曲がり面部９では、箱高さ方向での位置を同じにした繋ぎ部１７が胴周り方向に間隔をおいて配置されてなる上記列２０が存在していることから、列２０上に、間隔をおいて配置されている繋ぎ部１７とこの繋ぎ部１７の間に位置する面取り部１０の繋ぎ部間部２１とが胴周り方向に交互にして並んでいて、前記繋ぎ部１７と前記繋ぎ部間部２１とが交互に並んでなる線状補強部２２がこの列２０上に設けられている。 As described above, the curved surface portion 9 includes the row 20 in which the connecting portions 17 having the same position in the box height direction are arranged at intervals in the waist circumference direction. On the upper side, the connecting portions 17 arranged at intervals and the connecting portion portions 21 of the chamfered portion 10 located between the connecting portions 17 are alternately arranged in the circumferential direction, and the connecting portions 17 are arranged. And linear reinforcement portions 22 in which the inter-connection portion portions 21 are alternately arranged are provided on the row 20.

正面板２の左に位置する曲がり面部９では、上記線状補強部２２の一方の端部は正面板２に達し、他方の端部は左側面板４に達しており、正面板２の右に位置する曲がり面部９では、線状補強部２２の一方の端部は正面板２に達し、他方の端部は右側面板５に達している。 In the curved surface portion 9 located on the left side of the front plate 2, one end of the linear reinforcing portion 22 reaches the front plate 2, and the other end reaches the left side plate 4. In the curved surface portion 9 positioned, one end portion of the linear reinforcing portion 22 reaches the front plate 2 and the other end portion reaches the right side plate 5.

上記線状補強部２２はハーフカット非加工の部分であって両端部が上記面板に達していることから、製函の際に曲がり面部９に加えられる力がこの線状補強部２２に沿って分散する度合いを高めて、胴周り方向で並ぶ複数の弱化線位置に不均一に応力が集中することのないようにして、上記カット線部１６のいずれかに鋭角な折れ込みが生じないように規制する働きを有するものである。曲がり面部９は前記線状補強部２２を有することから、丸みを表現できる部位となり、紙箱１の外観を向上させることができる。 Since the linear reinforcing portion 22 is a half-cut non-processed portion and both end portions reach the face plate, the force applied to the bent surface portion 9 during box making is along the linear reinforcing portion 22. The degree of dispersion is increased so that stress is not concentrated unevenly at a plurality of weakening line positions arranged in the circumferential direction of the trunk so that no acute folding occurs in any of the cut line portions 16. It has a function to regulate. Since the curved surface portion 9 has the linear reinforcing portion 22, the curved surface portion 9 becomes a portion that can express roundness, and the appearance of the paper box 1 can be improved.

（第二の実施の例）
上記第一の実施の例での紙箱１においては、正面板２の左右両側に曲がり面部９が設けられているが、一方側にのみ曲がり面部９を設けるようにすることも可能である。その例が第二の実施の例として図４と図５とに示されている。第二の実施の例での紙箱１は第一の実施の例と比較して正面板２と背面板３とは幅狭であり、前述のように曲がり面部９も正面板２と左側面板４との間に配置されている（図５のブランク参照）。 (Example of the second implementation)
In the paper box 1 in the first embodiment, the bent surface portions 9 are provided on both the left and right sides of the front plate 2, but the bent surface portions 9 may be provided only on one side. An example of this is shown in FIGS. 4 and 5 as a second embodiment. The paper box 1 in the second embodiment is narrower in the front plate 2 and the back plate 3 than in the first embodiment, and the bent surface portion 9 is also in the front plate 2 and the left side plate 4 as described above. (Refer to the blank in FIG. 5).

この例の紙箱１にあっては、箱胴部の組み起こし前に背面板３と左側面板４との間で折り畳むとともに、正面板２と右側面板５との間を折り畳み、さらに糊代片１２を右側面板５の内面側に貼着させて扁平のスリープの形態としておくことができる。そして、この紙箱１は扁平のスリープの状態から箱胴部６を組み起こすことで、胴周り方向に丸味のある上述実施の例での曲がり面部と同じ構成の曲がり面部９が得られ、天面と底面とを閉鎖している紙箱１では、上述の例と同じように線状補強部２２を有した曲がり面部９を備えるものとなる。 In the paper box 1 of this example, it is folded between the back plate 3 and the left side plate 4 before the box body is raised, and is folded between the front plate 2 and the right side plate 5. Can be attached to the inner surface side of the right side plate 5 to form a flat sleep form. And this paper box 1 obtains the curved surface part 9 of the same structure as the curved surface part in the above-mentioned Example which is round in the circumference direction of a trunk by raising up the box body part 6 from the state of a flat sleep. In the paper box 1 that closes the bottom surface and the bottom surface, the curved surface portion 9 having the linear reinforcing portion 22 is provided as in the above-described example.

なお、この第二実施の例では、背面板３の下端縁に底面板である底面閉鎖部構成部材８１が連接されている。 In the second embodiment, a bottom surface closing portion constituting member 81 that is a bottom surface plate is connected to the lower end edge of the back plate 3.

（第三の実施の例）
第一、第二の実施の例において面取り部１０を紡錘形状としているが、本発明はこの面取り部１０の形状を限定しているものではない。第三の実施の例における紙箱１で示すように面取り部１０を六角形状とし、蜂の巣状にこの面取り部１０を並べ設けるようにして曲がり面部９が形成されている。この例では弱化線１４を、胴周り方向に凸凹となる曲がり１８を略台形として胴周り方向に向けて凸となる向きを交互に正逆にして箱高さ方向に並べ設けた形状としている（図６、図７）。 (Example of third implementation)
In the first and second embodiments, the chamfered portion 10 has a spindle shape, but the present invention does not limit the shape of the chamfered portion 10. As shown by the paper box 1 in the third embodiment, the chamfered portion 10 has a hexagonal shape, and the curved surface portion 9 is formed so that the chamfered portions 10 are arranged side by side in a honeycomb shape. In this example, the weakening line 14 has a shape in which the bend 18 that is convex and concave in the waist direction is substantially trapezoidal and the directions that are convex in the waist direction are alternately reversed and arranged in the box height direction ( 6 and 7).

そして、胴周り方向で隣り合う弱化線位置１５において曲がり１８の頂部１９となる部分が直線状となって重なっており、その重なり部分での上端及び下端に繋ぎ部１７を配置しているものである。この紙箱１においても、扁平のスリープの状態から箱胴部６を組み起こすことで、胴周り方向に丸味のある曲がり面部９が得られ、天面と底面とを閉鎖している紙箱１では、線状補強部２２を有した曲がり面部９を備えるものとなる。 And the part used as the top part 19 of the curve 18 in the weakening line position 15 adjacent in a trunk periphery direction has overlapped in the shape of a straight line, and has arrange | positioned the connection part 17 at the upper end and lower end in the overlap part. is there. Also in this paper box 1, by assembling the box body portion 6 from the flat sleep state, a rounded curved surface portion 9 is obtained in the direction around the body, and in the paper box 1 in which the top surface and the bottom surface are closed, The curved surface portion 9 having the linear reinforcing portion 22 is provided.

第三の実施の例での曲がり面部９も、面取り部１０の形状が相違する以外は上記実施の例での曲がり面部の構成と同じである。なお、この第三の実施の例の紙箱１の底面部は、扁平スリーブから箱胴部を組み起こすときに自動的にロックするボトムロック機構を利用して閉鎖されるものであり、噛み合い部を有する底面閉鎖部構成部材８１が正面板と背面板とのそれぞれの下端縁に連接され、隣位する底面閉鎖部構成部材８１の折り返し貼着片に事前に貼り合わされる底面閉鎖部構成部材８０が左右の側面板４、５の下端縁に連接されている。 The bent surface portion 9 in the third embodiment is the same as the bent surface portion in the above embodiment except that the shape of the chamfered portion 10 is different. The bottom portion of the paper box 1 of the third embodiment is closed by using a bottom lock mechanism that automatically locks when the box body is assembled from the flat sleeve, and the meshing portion is The bottom surface closing part constituting member 81 is connected to the lower end edges of the front plate and the back plate, and the bottom surface closing part constituting member 80 to be bonded in advance to the folded back adhesive piece of the adjacent bottom surface closing part constituting member 81 is provided. The left and right side plates 4 and 5 are connected to lower end edges.

（第四の実施の例）
第四の実施の例における紙箱１で示すように面取り部１０を縦長の菱形とし、この面取り部１０を並べ設けるようにして曲がり面部９が形成されている。この例では弱化線１４を、胴周り方向に凸凹となる曲がり１８を山形として胴周り方向に向けて凸となる向きを交互に正逆にして箱高さ方向に並べ設けた形状としている（図８、図９）。 (Example of the fourth implementation)
As shown by the paper box 1 in the fourth embodiment, the chamfered portion 10 has a vertically long rhombus, and the bent surface portion 9 is formed so that the chamfered portions 10 are arranged side by side. In this example, the weakening line 14 has a shape in which the bend 18 that is uneven in the waist direction is a mountain shape, and the directions that become convex in the waist direction are alternately reversed and arranged in the box height direction (see FIG. 8, FIG. 9).

第四の実施の例では、胴周り方向で隣り合う弱化線位置１５において曲がり１８の頂部１９となる部分が一点で重なっており、その重なり部分に繋ぎ部１７を配置しているものである。この紙箱１においても、扁平のスリープの状態から箱胴部６を組み起こすことで、胴周り方向に丸味のある曲がり面部９が得られ、天面と底面とを閉鎖している紙箱１では、線状補強部２２を有した曲がり面部９を備えるものとなる。 In the fourth embodiment, the portion that becomes the apex 19 of the bend 18 overlaps at one point at the weakening line position 15 adjacent in the waistline direction, and the connecting portion 17 is arranged at the overlapping portion. Also in this paper box 1, by assembling the box body portion 6 from the flat sleep state, a rounded curved surface portion 9 is obtained in the direction around the body, and in the paper box 1 in which the top surface and the bottom surface are closed, The curved surface portion 9 having the linear reinforcing portion 22 is provided.

この第四の実施の例は曲がり面部９は上端９ａが天面の一隅Ｘに達しているが、下端９ｂは箱胴部６の中央高さ位置としており、下端９ｂは正面板２と左側面板４との間の折り部に連続している。このように、曲がり面部９は箱胴部６の箱高さ方向において部分的に設けるようにすることも可能である。 In the fourth embodiment, the bent surface portion 9 has the upper end 9a reaching one corner X of the top surface, but the lower end 9b is the central height position of the box body portion 6, and the lower end 9b is the front plate 2 and the left side plate. 4 and the folds between the two. In this way, the curved surface portion 9 can be partially provided in the box height direction of the box body portion 6.

なお、曲がり面部９の形成は、面取り部１０の形状が相違する点と下端が底面部側に達していない点以外は上記実施の例での曲がり面部の構成と同じである。また、底面部の閉鎖は上記例と同様にオートマチックボトムロック機構を採用して閉鎖される。 The formation of the curved surface portion 9 is the same as the configuration of the curved surface portion in the above embodiment except that the shape of the chamfered portion 10 is different and the lower end does not reach the bottom surface portion side. Further, the bottom portion is closed by employing an automatic bottom lock mechanism as in the above example.

（第五の実施の例）
第五の実施の例は上記第四の実施の例の変形であって、曲がり面部９が第一、第二、第三の実施の例と同じように箱胴部６の箱高さ方向の全体に亘って設けられているものである（図１０、図１１）。 (Example of the fifth implementation)
The fifth embodiment is a modification of the above-described fourth embodiment, and the curved surface portion 9 is arranged in the box height direction of the box body portion 6 in the same manner as in the first, second, and third embodiments. This is provided throughout (FIGS. 10 and 11).

（第六の実施の例）
第六の実施の例は第一の実施の例の変形であって、図１２、図１３に示すように曲がり面部９を構成している面取り部１０の形状を縦長の菱形としていて、他の点については第一の実施の例と同様である。 (Example of sixth implementation)
The sixth embodiment is a modification of the first embodiment. As shown in FIGS. 12 and 13, the shape of the chamfered portion 10 constituting the curved surface portion 9 is a vertically long rhombus, This is the same as in the first embodiment.

上記各実施の例に対応する図面それぞれにおいて、説明を容易にするために弱化線、弱化線位置などの各部位について全てには符号を付してはいない。また、列２０については一点破線でその列の高さ位置を示しているが、その位置全てにこの仮想線が配されているわけではない。 In each of the drawings corresponding to the above-described embodiments, all parts such as the weakening line and the weakening line position are not labeled for ease of explanation. Moreover, although the height position of the row | line | column is shown with the dashed-dotted line about the row | line | column 20, this virtual line is not necessarily distribute | arranged to all the positions.

（補強手段）
上述した例では、紙箱１の天面の一隅Ｘに、曲がり面部９の上端９ａを達しさせるとともに、底面の一隅Ｙに、曲がり面部９の下端９ｂを達しさせたもの、また天面の一隅Ｘに、曲がり面部９の上端９ａを達しさせ、曲がり面部９の下端９ｂについては底面の一隅Ｙに達しさせずに箱胴部６の中央高さ位置にしたものを示している。そして前記上端９ａや下端９ｂにおいては、ハーフカット線の繋ぎ部が前記一隅の位置に達していて（繋ぎ部が一隅に連続している）、カット線部が直接的にその一隅に達しているものではないが、前記繋ぎ部の長さは短かいものである。 (Reinforcing means)
In the above-described example, the upper end 9a of the bent surface portion 9 is made to reach the corner X of the top surface of the paper box 1, and the lower end 9b of the bent surface portion 9 is made to reach the corner Y of the bottom surface. The upper end 9a of the bent surface portion 9 is reached, and the lower end 9b of the bent surface portion 9 is not reached the corner Y of the bottom surface, but the center height of the box body portion 6 is shown. At the upper end 9a and the lower end 9b, the connecting portion of the half cut line reaches the position of the one corner (the connecting portion is continuous at one corner), and the cut line portion reaches the one corner directly. Although it is not a thing, the length of the said connection part is short.

このような紙箱１を落とすなどして、曲がり面部の上端や下端が達している天面や底面の一隅Ｘ、Ｙに衝撃が加わったとき、その一隅Ｘ、Ｙ側にあるカット線部の位置で僅かながらも箱包材に層間剥離が生じ易くなる。特に第四、第五、第六の実施の例で示すごとく面取り部１０が菱形となって直線状のカット線部における端部同士が一隅で近接する位置関係であると、カット線部の位置で生じた両者の層間剥離が繋がって、上端９ａや下端９ｂを一部分としている面取り部１０のその上端９ａ側、下端９ｂ側で少し捲れて、その捲れによって紙箱１の外観が損なわれる可能性がある。 When an impact is applied to the corners X and Y of the top and bottom surfaces where the upper and lower ends of the bent surface portion are reached by dropping such a paper box 1, the position of the cut line portion on the one corner X and Y side However, delamination is likely to occur in the box wrapping material. In particular, as shown in the fourth, fifth, and sixth examples, the chamfered portion 10 has a rhombus shape and the end portions of the linear cut line portion are close to each other at one corner. There is a possibility that the delamination between the two occurs, and the chamfered portion 10 having the upper end 9a and the lower end 9b as a part is curled slightly on the upper end 9a side and the lower end 9b side, and the appearance of the paper box 1 may be damaged by the curl. is there.

図１４（ａ）（ｂ）は面取り部１０を菱形となっている紙箱１に対して上記捲れを生じさせないようにするために補強手段２３を設けた例を、ブランクの状態で示している。図示の例では、箱の天面の一隅Ｘに曲がり面部９の上端９ａが非連続の状態で近接している。そして（ａ）に示す例では、上端９ａが近接する前記一隅Ｘ側からその上端９ａに向けて短寸の折り罫を入れてなる補強手段２３を、前記上端９ａとこの上端９ａが近接する前記一隅Ｘとの間に設けていて、前記補強手段２３は上端９ａを一部とする面取り部１０の中央に向けて直線状とされたものである。なお、図１４（ａ）（ｂ）ではブランクを示す図において便宜上、箱の天面の一隅となる部分に符号Ｘを付している。 FIGS. 14 (a) and 14 (b) show an example in which the reinforcing means 23 is provided in a blank state in order to prevent the chamfered portion 10 from causing the above-described twisting of the paper box 1 having a diamond shape. In the illustrated example, the upper end 9a of the curved surface portion 9 is close to the corner X of the top surface of the box in a discontinuous state. And in the example shown to (a), the reinforcing means 23 which puts a short crease from the one corner X side where the upper end 9a adjoins toward the upper end 9a, the upper end 9a and the upper end 9a are close to each other. It is provided between the corner X and the reinforcing means 23 is linear toward the center of the chamfered portion 10 having the upper end 9a as a part. In FIGS. 14 (a) and 14 (b), for the sake of convenience in the drawings showing blanks, a portion X that is one corner of the top surface of the box is given a reference symbol X.

このように曲がり面部９の上端９ａが非連続の状態とされているので、上端９ａでのハーフカット線のカット線部１６それぞれが箱胴部において天面の一隅Ｘから離れたものとなり、さらに前記天面の一隅Ｘに達する補強手段２３が紙箱１の形態で角立つ易い部分となっており、カット線部１６の位置に応力集中をさせずに層間剥離を抑え込む補強が図られている。よって、紙箱１を取り扱っているときにこの天面の一隅Ｘ側に衝撃が加わるようなことがあっても、上端９ａを一部分とする面取り部１０での捲れを防止する。 Thus, since the upper end 9a of the curved surface portion 9 is in a discontinuous state, the cut line portions 16 of the half cut line at the upper end 9a are separated from the corner X of the top surface in the box body, The reinforcing means 23 that reaches one corner X of the top surface is a portion that is easily squared in the form of the paper box 1, and reinforcement that suppresses delamination without concentrating stress on the position of the cut line portion 16 is achieved. Therefore, even when an impact is applied to one corner X side of the top surface when the paper box 1 is handled, the chamfered portion 10 having the upper end 9a as a part is prevented from curling.

図１４（ａ）では上記補強手段２３を設けた例として、その補強手段２３を直線状にして短寸の折り罫からなるものとしたが、箱胴部での前記一隅に対応する部分での折り曲げを容易にしつつ層間剥離を抑え込むものであればよく、図１４（ｂ）に示すようにカット線部１６の方向に沿うように八状に分かれた折り罫からなるものとすることが可能である。また、紙箱１の天面（天面閉鎖部７）の一隅に曲がり面部９の上端９ａが近接しているものを示したが、下端９ｂが底面（底面閉鎖部８）の一隅に近接させるようにしたものについてもこの補強２３を設ける構成を採用することができ、さらに面取り部１０が菱形とした紙箱に限定されるものでもない。 In FIG. 14A, as an example in which the reinforcing means 23 is provided, the reinforcing means 23 is formed in a straight line and is formed of a short crease, but at a portion corresponding to the corner in the box body. What is necessary is just to suppress the delamination while facilitating the folding, and it can be composed of folding rules divided into eight shapes along the direction of the cut line portion 16 as shown in FIG. is there. In addition, the upper end 9a of the curved surface portion 9 is shown close to one corner of the top surface (top surface closing portion 7) of the paper box 1, but the lower end 9b is close to one corner of the bottom surface (bottom surface closing portion 8). The configuration in which the reinforcement 23 is provided can also be adopted for what has been made, and the chamfered portion 10 is not limited to a paper box having a diamond shape.

１…紙箱
２…正面板
３…背面板
４…左側面板
５…右側面板
６…箱胴部
９…曲がり面部
９ａ…曲がり面部の上端
９ｂ…曲がり面部の下端
１０…面取り部
１４…弱化線
１５…弱化線位置
１６…カット線部
１７…繋ぎ部
１８…曲がり
１９…曲がりの頂部
２０…繋ぎ部が胴周り方向に間隔をおいて配置されている列
２１…繋ぎ部間部
２２…線状補強部
２３…補強手段
ａ…列の太部
ｂ…列の細部
Ｘ…天面の一隅
Ｙ…底面の一隅 DESCRIPTION OF SYMBOLS 1 ... Paper box 2 ... Front board 3 ... Back board 4 ... Left side board 5 ... Right side board 6 ... Box trunk | drum 9 ... Bending surface part 9a ... Upper end of a bending surface part 9b ... Lower end of a bending surface part 10 ... Chamfering part 14 ... Weakening line 15 ... Weakening line position 16 ... Cut line portion 17 ... Connecting portion 18 ... Bending 19 ... Bending portion 20 ... Row in which connecting portions are arranged at intervals in the trunk circumference direction 21 ... Connecting portion 22 ... Linear reinforcing portion 23 ... Reinforcing means a ... Thick part of row b ... Detail of row X ... One corner of top surface Y ... One corner of bottom surface

Claims

Face plates are arranged side by side to form a box body, and one of the face plates that form the box body is bent in the direction around the body between one face plate and another face plate adjacent to the face plate. A paper box provided with a curved surface portion,
In the curved surface portion, a plurality of weakening lines that are repeated in a direction orthogonal to the trunk periphery direction are put in a shape that forms a waveform of the weakening line and is uneven in the trunk circumference direction,
The weakening lines adjacent in the waistline direction are arranged such that the bending of the weakening line is symmetrical about the weakening lines adjacent in the waistline direction, and is centered between the weakening lines. Are arranged so that the top part of the bend facing the convex direction is close or overlapping,
A plurality of chamfered portions of a small area formed between weakening lines adjacent in the waist circumference direction are arranged in a direction orthogonal to the waist circumference direction,
The plurality of chamfers are arranged adjacent to each other with a weakening line in between by arranging a plurality of chamfered portions arranged in a row perpendicular to the waistline direction in one or more rows in the waistline direction. Divided into parts,
The bent surface portion is bent in the waist direction by the breakage of the weakening line between the chamfers adjacent in the waist direction,
The weakening line is a half-cut line, and the half-cut line includes a cut line portion obtained by performing a half-cut process on the box packaging material along a position of the weakening line in a direction orthogonal to the trunk circumference direction, and a half-cut line. A paper box in which cuts are alternately arranged with short-sized joints that are not processed with respect to the box packaging material.

The paper box according to claim 1, wherein the connecting portion is provided at a top portion of the bend in the weakening line.

The top part of the above-mentioned curve in which the convex direction is centered between the weakening lines adjacent to each other in the waist circumference direction is arranged oppositely in a proximity state through a gap, and this oppositely arranged curve The paper box according to claim 2, wherein each of the top portions is provided with the connecting portion.

3. The paper box according to claim 1, wherein the connecting portion is provided at a portion where the weakening line in a direction orthogonal to the trunk circumference direction and the weakening line adjacent to the weakening line in the trunk circumference direction overlap.

The curved surface portion has the same position in the direction orthogonal to the trunk circumference direction, and a plurality of the joint portions arranged at intervals in the trunk circumference direction and the chamfered portion located between the joint portions. A half-cut non-processed linear reinforcement part is provided, in which the connecting part and the part between the connecting parts are alternately arranged in the trunk periphery direction.
The paper box according to any one of claims 1 to 4, wherein the linear reinforcing portion regulates an acute fold of the cut line portion in the bent surface portion.

The end of the bent surface portion is close to at least one of the top corner and the bottom corner of the box in a discontinuous state and the end of the bent surface portion is close to the end of the bent surface portion. 6. The reinforcing means according to claim 1, wherein a short crease is provided between the end portion of the bent surface portion and the corner where the end portion of the bent surface portion is adjacent. The paper box according to one item.