JP2013028346A

JP2013028346A - Paper container blank and paper container

Info

Publication number: JP2013028346A
Application number: JP2011163544A
Authority: JP
Inventors: Kenji Toyama; 健司遠山; Makoto Yamaguchi; 誠山口; Sachiko Arimoto; 祥子有本
Original assignee: Toppan Printing Co Ltd
Current assignee: Toppan Inc
Priority date: 2011-07-26
Filing date: 2011-07-26
Publication date: 2013-02-07
Anticipated expiration: 2031-07-26
Also published as: JP5990873B2

Abstract

PROBLEM TO BE SOLVED: To provide a paper container to be formed from one blank, configured to prevent liquid generated in a storage part of a container from passing through a narrow passage having a gap formed in a fold position between two fold-in joint sheets, thereby preventing molten content from being leaked to the outside from ends on the flange in the fold position of the two fold-in joint sheets.SOLUTION: A narrow passage 18 having a gap narrowed by mountain folding is formed in the longitudinal direction of a fold part, on the inner surface side of a fold part which is formed by mountain-folding the folding position 19 between two fold-in joint sheets 121, 141 folded to a second side face plate 14. The narrow passage 18 on the inner surface side of the fold part is shifted in the middle of the fold part.

Description

本発明は、冷凍食品、粉末物等の包装に使用される紙容器を得るためのブランクとそのブランクを組み起こした紙容器、そして蓋板にて収容部を閉じた紙容器に関するものである。 The present invention relates to a blank for obtaining a paper container used for packaging frozen foods, powders, and the like, a paper container in which the blank is assembled, and a paper container in which a container is closed with a cover plate.

従来から、特許文献１に開示されているような形状をした一枚のブランクから上面開口としたトレー状のフランジ付き紙容器があり、これに紙製の蓋板を被せてその蓋板周辺とフランジとをヒートシールすることで、冷凍食品等の包装用として使用されている。 Conventionally, there is a tray-like flanged paper container having a top surface opening from a single blank having a shape as disclosed in Patent Document 1, and this is covered with a paper cover plate and the periphery of the cover plate. By heat-sealing the flange, it is used for packaging frozen foods and the like.

図９に示すようにフランジ付きの紙容器１を組み上げることのできるブランクは、方形の底面板１１の相対向する二側辺にそれぞれ山折り線を介して側面板１２が連接され、前記側面板１２の底面板１１とは反対側となる外辺には、谷折り線を介して縁片１３が連接され、その縁片１３の左右端（縁片の長さ方向に対向する端部）にはそれぞれ横方向（縁片の長さ方向）に延びる舌片１３１が設けられている。前記側面板１２の左右側辺（側面板の幅方向に対向する辺）には、それぞれ山折り線を介して逆三角形状の折り込み接合板１２１が連接され、前記折り込み接合板１２１の底面板１１とは反対側となる外辺には、谷折り線を介して接合縁片１２２が連接されていて、この接合縁片１２２は切り込みを介した状態で舌片１３１と同一平面を形成している（図１０）。 As shown in FIG. 9, in the blank that can assemble the paper container 1 with the flange, the side plate 12 is connected to the two opposite sides of the rectangular bottom plate 11 via the mountain fold line, respectively. 12 is connected to the outer side opposite to the bottom plate 11 via a valley fold line, and the right and left ends of the edge piece 13 (ends facing the length direction of the edge piece). Are provided with tongue pieces 131 extending in the lateral direction (length direction of the edge piece). The left and right side sides (sides facing the width direction of the side plate) of the side plate 12 are respectively connected to a folded joining plate 121 having an inverted triangular shape via a mountain fold line, and the bottom plate 11 of the folded joining plate 121 is connected. A joining edge piece 122 is connected to the outer side opposite to the bottom via a valley fold line, and this joining edge piece 122 forms the same plane as the tongue piece 131 through a notch. (FIG. 10).

上記山折り線及び谷折り線は折り位置を示している。併せて、山折り線は紙容器を組み上げるときに容器外方向に向けて折り角が立つように凸に折曲される部分である。また、谷折り線は前記山折り線の位置の折り方向とは逆方向に折り曲げる部分であり、ブランクでの容器内面側となる片面が折り角として立って凸となる折り曲げが行なわれる。そして、山折り線と谷折り線との位置には共に、抜型で原紙からブランクを抜くと同時に押罫（刃）を当てて形成される折り罫を設けていて、従来から知られているようにブランクの容器外面側となる片面に押罫を当てるとともに受型の対応位置にも押罫受け溝部材を配置することにより設けられている。 The mountain fold line and the valley fold line indicate the folding position. In addition, the mountain fold line is a portion that is bent convexly so that the folding angle is raised toward the outside of the container when the paper container is assembled. The valley fold line is a portion that is bent in the direction opposite to the folding direction of the mountain fold line, and folding is performed such that one side of the blank that is the inner surface of the container stands as a fold angle. In addition, the positions of the mountain fold line and the valley fold line are provided with a fold ruled line that is formed by punching a blank from a base paper and simultaneously applying a stamped line (blade) at the position of the die fold. In addition, a ruled line is provided on one side of the blank, which is the outer surface of the container, and a ruled line receiving groove member is provided at a corresponding position of the receiving die.

図では山折り線及び谷折り線の位置の折り罫を線状に記載しているが、手持ちできる程度の大きさの紙容器を得るための本ブランクでは、山折り線と谷折り線との位置に設けられる折り罫は、共にブランクの容器内面側となる片面に凸となる断面形状であり、押罫を当てて容器外面側となる片面で凹溝状となっている部分は０．１ｍｍ〜０．７ｍｍ程度の幅を有している。 In the figure, the creases at the positions of the mountain fold line and the valley fold line are shown in a line, but in this blank for obtaining a paper container of a size that can be held by hand, the mountain fold line and the valley fold line The crease provided at the position has a cross-sectional shape that is convex on one side that is the container inner surface side of the blank, and the portion that has a groove shape on one side that faces the outer surface of the container by applying the ruler is 0.1 mm. It has a width of about 0.7 mm.

接合縁片１２２と舌片１３１とを分ける切り込みの切り込み端は、側面板１２の側辺の山折り線と側面板１２の外辺の谷折り線とが集合してなる第一集合点Ａ（折り込み接合板１２１の外辺の谷折り線もこの第一集合点Ａに集合するようにブランクに対して罫線入れされている）まで達しており、この切り込みによって、舌片１３１は、後述するように製函時に前記接合縁片１２２と折り込み接合板１２１とから分離する。 The incision end of the incision that separates the joining edge piece 122 and the tongue piece 131 is a first set point A (a combination of a mountain fold line on the side of the side plate 12 and a valley fold line on the outer side of the side plate 12 ( The valley fold line on the outer side of the fold-in joining plate 121 also reaches the blank so as to gather at the first gathering point A), and the tongue piece 131 will be described later by this incision. In addition, the joint edge piece 122 and the folded joint plate 121 are separated from each other during box making.

また、底面板１１の他の相対向する二側辺には、それぞれ山折り線を介して第二側面板１４が連接され、第二側面板１４の底面板１１とは反対側の外辺には、谷折り線を介して第二縁片１５が連接され、その第二縁片１５の左右端（第二縁片の長手方向に対向する端部）には、それぞれ横方向（第二縁片の長手方向）に延びる第二舌片１５１が設けられている。前記第二側面板１４の左右側辺（第二側面板の幅方向に対向する辺）には、それぞれ谷折り線を介して逆三角形状の第二折り込み接合板１４１が連接されている。 In addition, the second side plate 14 is connected to the other two opposite sides of the bottom plate 11 via a mountain fold line, and the second side plate 14 has an outer side opposite to the bottom plate 11. The second edge piece 15 is connected via a valley fold line, and the left and right ends of the second edge piece 15 (ends facing the longitudinal direction of the second edge piece) are respectively lateral (second edge). A second tongue piece 151 extending in the longitudinal direction of the piece is provided. The left and right side edges (sides facing the width direction of the second side face plate) of the second side face plate 14 are connected to an inverted triangular second folding joining plate 141 via a valley fold line, respectively.

さらに底面板１１の周方向で隣り合う側面板１２と第二側面板１４との間に位置する前記折り込み接合板１２１と第二折り込み接合板１４１とについては、その折り込み接合板１２１の側面板１２とは反対側の側辺と、第二折り込み接合板１４１の第二側面板１４とは反対側の側辺とが、山折り線を介して連接されている。即ち、折り込み接合板１２１と第二折り込み接合板１４１とが並び設けられていて、その間を山折り線としている。折り込み接合板１２１と第二折り込み接合板１４１とは底面板側の角度が同じであり、この二枚の折り込み接合板同士は重ね合わせる部分での形状は山折り線を間にして対称としている。そして、上記第二舌片１５１での第二折り込み接合板１４１が接する近傍となる端縁には、第二折り込み接合板１４１側に突出する小突起１５２が設けられていて、小突起１５２と第二折り込み接合板１４１とは切り込みを介して同一平面を形成するようにしている（図１０）。 Further, regarding the folding joint plate 121 and the second folding joint plate 141 positioned between the side plate 12 and the second side plate 14 adjacent in the circumferential direction of the bottom plate 11, the side plate 12 of the folding joint plate 121. The side opposite to the second side and the side opposite to the second side plate 14 of the second folded joint plate 141 are connected via a mountain fold line. That is, the folding joint plate 121 and the second folding joint plate 141 are provided side by side, and a gap between them is a mountain fold line. The folding joint plate 121 and the second folding joint plate 141 have the same angle on the bottom plate side, and the two folded joint plates are symmetrical with each other with a mountain fold line between them. Further, a small protrusion 152 protruding toward the second folding joint plate 141 is provided at an edge of the second tongue piece 151 in the vicinity where the second folding joint plate 141 comes into contact. The two-fold joint plate 141 forms the same plane through a cut (FIG. 10).

小突起１５２と第二折り込み接合板１４１との間の切り込みは、後述するようにこの小突起１５２が、舌片１３１側の上記第一集合点Ａ（上記舌片１３１の切り込み端が位置している個所）に対応してこの第一集合点Ａを覆うことができる形状とするために、第二側面板１４の側辺の谷折り線と第二側面板１４の外辺の谷折り線とが集合してなる第二集合点Ｂより底面板１１側に寄っており、その切り込み端は、第二側面板１４の側辺の前記谷折り線で折り曲がる部分まで達している。 The cut between the small protrusion 152 and the second folding joining plate 141 is performed by the small protrusion 152 at the first set point A on the tongue piece 131 side (the cut end of the tongue piece 131 is positioned). In order to form a shape that can cover the first set point A corresponding to the location of the second side plate 14 and the outer side valley fold line of the second side plate 14, Is closer to the bottom plate 11 side than the second gathering point B formed by gathering, and the cut end reaches the portion of the side of the second side plate 14 that is bent at the valley fold line.

上記ブランクからフランジ付き紙容器を得るには、底面板１１の山折り線の位置を山折りして側面板１２と第二側面板１４とを折り起こしてトレー状とし、折り込み接合板１２１と第二折り込み接合板１４１とはこの折り込み接合板１２１と第二折り込み接合板１４１との間の山折り線の位置で山折りして重ね合わせて内面同士を相対させている。また、折り込み接合板１２１と第二折り込み接合板１４１とを重ね合わせる過程で、第二折り込み接合板１４１が第二側面板１４の外面に相対するようにしてこの第二側面板１４側に折り曲げて重ね合わせ（図１３参照）、縁片１３、第二縁片１５、接合縁片１２２をそれぞれ谷折りして、前記重ね合わされた折り込み接合板１２１と第二折り込み接合板１４１との第二側面板１４への重ね合わせにより前記接合縁片１２２の上面と前記第二縁片１５の下面とが相対するようになり、この接合縁片１２２の上面と前記第二縁片１５の下面とが接着され、また側面板１２と第二側面板１４とを折り起こして相互の側辺同士を揃えるようにすることにより前記舌片１３１の上面と第二舌片１５１の下面とが相対し、この舌片１３１の上面と第二舌片１５１の下面とを接着させていて、このようにして上面が開口部とされたトレー状の紙容器が組み上げられている（図１１、図１２参照）。図示したブランクを構成する包材はその両面がヒートシール性を備える熱可塑性樹脂層であって、前述した接着は製函時におけるヒートシールを伴なった圧着によるものである。 In order to obtain a flanged paper container from the blank, the side plate 12 and the second side plate 14 are folded up at the position of the mountain fold line of the bottom plate 11 to form a tray, and the folded joint plate 121 and the first plate The two folded joint plates 141 are overlapped at the position of the mountain fold line between the folded joint plate 121 and the second folded joint plate 141 so that the inner surfaces are opposed to each other. Further, in the process of overlapping the folding joint plate 121 and the second folding joint plate 141, the second folding joint plate 141 is folded toward the second side plate 14 so as to face the outer surface of the second side plate 14. Overlapping (see FIG. 13), the edge piece 13, the second edge piece 15, and the joining edge piece 122 are each valley-folded, and the second side plate of the folded joining plate 121 and the second folded joining plate 141 that are superimposed. 14, the upper surface of the joining edge piece 122 and the lower surface of the second edge piece 15 are opposed to each other, and the upper surface of the joining edge piece 122 and the lower surface of the second edge piece 15 are bonded together. Further, by folding the side plate 12 and the second side plate 14 so that the sides are aligned with each other, the upper surface of the tongue piece 131 and the lower surface of the second tongue piece 151 are opposed to each other. 131 top and second tongue 151 have adhered and the lower surface of, such that the tray-shaped paper container whose upper surface is an opening in the are assembled (see FIG. 11, FIG. 12). The packaging material constituting the illustrated blank is a thermoplastic resin layer having heat sealability on both surfaces thereof, and the above-described adhesion is due to pressure bonding accompanied by heat sealing during box making.

製函された紙容器は、底面板１１と四方の側面板１２、第二側面板１４とで上面を開口部とする上開きのテーパー形状とする収容部が形成され、開口部の周囲には、前記側面板１２の外辺と第二側面板１４の外辺から谷折りされた縁片１３と第二縁片１５とが位置して、縁片１３の舌片１３１の上面に第二縁片１５が位置して上述のように接着されることで前記縁片１３と第二縁片１５とが連続してなるフランジ１６が形成されている。 In the boxed paper container, the bottom plate 11, the four side plates 12, and the second side plate 14 are each formed with an accommodating portion having an upper opening with an upper surface as an opening, and around the opening. The outer edge of the side plate 12 and the edge piece 13 and the second edge piece 15 that are valley-folded from the outer side of the second side face plate 14 are positioned, and the second edge is formed on the upper surface of the tongue piece 131 of the edge piece 13. A flange 16 in which the edge piece 13 and the second edge piece 15 are continuous is formed by positioning the piece 15 and bonding it as described above.

第二舌片１５１から突出する形状とした上記小突起１５２が設けられた目的は以下の理由によるものである。即ち、このブランクからなる紙容器において、第一集合点Ａに舌片１３１の切り込み下端が達していて、紙容器形態での第一集合点Ａで微細な透孔が生じ易い構造となっている。よって、前記小突起１５２を、縁片１３と側面板１２との間の谷折り線の端部に跨るようにして、収容物を充填して蓋板を取り付けた後に第一集合点Ａでの微細な透孔から収容物が外部に漏れ出るのを防止することであった。 The purpose of providing the small protrusion 152 having a shape protruding from the second tongue piece 151 is as follows. That is, in the paper container made of this blank, the cut lower end of the tongue piece 131 reaches the first assembly point A, and a fine through hole is easily generated at the first assembly point A in the form of the paper container. . Therefore, after the small protrusion 152 is placed over the end of the valley fold line between the edge piece 13 and the side plate 12, the container is filled and the lid plate is attached, and then the first set point A It was to prevent the contents from leaking out of the fine through holes.

なお、ブランクに使用する材料は、一般的に紙箱用として使用されるコートボール、コートマニラ、アイボリーなどの板紙で良いが、収容物が冷凍食品等の水分を多く含むものの場合には、板紙の少なくとも内面にポリエチレン樹脂を溶融押出し法により塗布したポリエチレン加工紙が好ましく使用できる。トレーに組み立てた時、ポリエチレンが接合に有利であることを考慮すると、ブランクの両面にポリエチレン樹脂等の熱可塑性樹脂が塗布されている加工紙を使用することが望ましい。 The material used for the blank may be paperboard such as coated balls, coated manila, and ivory that are generally used for paper boxes. However, if the contents contain a lot of water such as frozen food, A polyethylene processed paper in which a polyethylene resin is applied to at least the inner surface by a melt extrusion method can be preferably used. In view of the fact that polyethylene is advantageous for joining when assembled in a tray, it is desirable to use a processed paper in which a thermoplastic resin such as polyethylene resin is applied to both sides of the blank.

特許第３６８７３９６号公報Japanese Patent No. 3687396

上記フランジ付きの紙容器は、冷凍食品を収容する用途、例えばアイスクリームなどの氷菓を充填して紙製の蓋板を被せ付けた商品の紙容器として使用されることが多い。そして、この紙容器については折り込み接合板と第二折り込み接合板との重ね合わせの部分から収容物が漏れ出る可能性を極力無くしたいとの要望がある。 The above-mentioned flanged paper container is often used as a paper container for products containing frozen foods, for example, products filled with ice confectionery such as ice cream and covered with a paper lid. And about this paper container, there exists a request | requirement of eliminating as much as possible the possibility that a stored item will leak from the overlapping part of a folding joint plate and a 2nd folding joint plate.

その点を説明すれば、商品の製造メーカから出荷され小売店舗で陳列販売するまでの流通時には適切な温度の下で商品が保管され管理されており、充填された収容物は凍っていることからその収容物が溶け出る心配はない。しかしながら、一般消費者が店頭でこの商品を購入して自宅等で食するまでの間に、収容物の容器本体に接している部分が融けて液体となり、その液体が底面板側に溜まり易い。そして、液体が底に溜まっている紙容器の上下（天地）を逆さまにして持ち運びされる場合もある。 To explain that point, products are stored and managed under appropriate temperature during distribution from the product manufacturer to display at the retail store, and the filled contents are frozen. There is no worry that the contents will melt away. However, until the general consumer purchases this product at the store and eats it at home or the like, the portion of the container in contact with the container body melts and becomes liquid, and the liquid tends to accumulate on the bottom plate side. In some cases, the paper container in which the liquid is accumulated at the bottom is carried upside down (upside down).

一方、融けた収容物一部が液体として逆さまの紙容器の二枚の折り込み接合板を重ね合わせている部分を通って容器外に漏れ出る可能性がある。即ち、折り込み接合板１２１と第二折り込み接合板１４１とは上述したように重ね合わされていて、紙容器の組み起こし時に必要に応じて対向面同士の所要個所をヒートシールにて融着させることも行なわれているが、図１４の矢印で順を追って示すように、折り込み接合板１２１と第二折り込み接合板１４１との間の山折り線の位置には、ブランクの容器内方側となる片面に凸の折り罫１７が形成されていて、二枚の折り込み接合板１２１、１４１を重ね合わせたときに折り罫１７の凸部１７ａがその折り罫の幅方向に潰されて細くはなるものの凹むことはなく、折り位置の内面側に凸部１７ａが残ってしまう。 On the other hand, there is a possibility that a part of the melted contents leaks out of the container as a liquid through a portion where the two folded joint plates of the paper container upside down are overlapped. That is, the folding and joining plate 121 and the second folding and joining plate 141 are overlapped as described above, and when necessary, the required portions of the opposing surfaces can be fused by heat sealing when the paper container is assembled. As shown in the order of arrows in FIG. 14, the single-side surface that is the inner side of the blank container is located at the position of the mountain fold line between the folding joint plate 121 and the second folding joint plate 141. A convex crease 17 is formed on the fold, and when the two folded joint plates 121 and 141 are overlapped, the convex portion 17a of the crease 17 is crushed in the width direction of the crease, but becomes concave. In other words, the convex portion 17a remains on the inner surface side of the folding position.

そして、二枚の折り込み接合板１２１，１４１の前記凸部１７ａ側の部分でその凸部１７ａを挟み込む折り形態となり、製函時に重ね合わされた折り込み接合板１２１、１４１の対向面同士をヒートシールしても、その折り位置の内部断面形状は、図１５の拡大した断面で示すように二枚の折り込み接合板１２１，１４１の合わせ目に向けて突き出た凸部１７ａに沿って隙間からなる狭窄路１８が存在した形状となる。そのため、この折り位置の内面に底面板の隅から容器本体上面側に亘る直線的な通路が生じて液体が通り易い状態となっている。 And it becomes the folding form which pinches the convex part 17a in the part by the side of the said convex part 17a of the two folding joining plates 121 and 141, and heat-seal the opposing surfaces of the folding joint plates 121 and 141 overlapped at the time of box making. However, as shown in the enlarged cross section of FIG. 15, the internal cross-sectional shape of the folding position is a constricted path formed by a gap along the convex portion 17a protruding toward the joint between the two folded joint plates 121 and 141. 18 is present. Therefore, a straight passage from the corner of the bottom plate to the upper surface of the container body is formed on the inner surface of the folding position, so that the liquid can easily pass through.

このように、二枚の折り込み接合板１２１，１４１の間の折り位置の内部に底面板１１の隅から容器本体上面側に亘って直線状に連続した狭窄路１８がある紙容器が逆さまとなり、底面板側で溜まっていた液体が前記狭窄路１８の底面板側の端部１８ａに及ぶと、図１６に示すように前記折り位置の内部を通ってフランジ側の端部１８ｂから漏れ出る可能性がある（矢印は液体が流れる方向を示している）。 In this way, the paper container having the narrow path 18 linearly continuous from the corner of the bottom plate 11 to the top surface of the container body inside the folding position between the two folding joint plates 121 and 141 is turned upside down. When the liquid accumulated on the bottom plate side reaches the end 18a on the bottom plate side of the constriction path 18, it may leak out from the end 18b on the flange side through the inside of the folding position as shown in FIG. (The arrow indicates the direction of liquid flow).

そこで本発明は上記事情に鑑み、一枚のブランクから組み起こされる紙容器において、二枚の折り込み接合板の間の折り位置の内部に形成される隙間からなる狭窄路を容器の収容部で生じた液体が通らないように、或いは通り難くなるようにすることを課題とし、この二枚の折り込み接合板の折り位置のフランジ側の端部から融けた収容物が外部に漏れ出ない紙容器を得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 liquid container formed in a container containing a narrow path formed by a gap formed inside a folding position between two folding joint plates in a paper container assembled from a single blank. To obtain a paper container in which the contents melted from the flange end of the folding position of the two folded joint plates do not leak to the outside. It is intended.

（請求項１）
本発明は上記課題を考慮してなされたもので、方形の底面板の四方の側辺それぞれに側面板が連接され、前記底面板の周方向で隣り合う側面板の間それぞれに逆三角形状にした二枚の折り込み接合板が並び設けられていて、隣り合う前記二枚の折り込み接合板が連接されているとともに、隣り合う側面板と折り込み接合板とが連接され、
前記底面板の側辺を折り位置にした山折りにより前記側面板を折り起こし、隣り合う折り込み接合板の間を折り位置にした山折りにより前記隣り合う折り込み接合板同士を重ね合わせ、この重ね合わせた二枚の折り込み接合板を、前記隣り合う側面板の内の一方の側面板の容器外面側となる片面に折り曲げて重ね合わせ、折り起こされた前記側面板により四方が囲まれて容器本体上面が開放されてなる紙容器が形成されるように設けられている紙容器用ブランクにおいて、
前記二枚の折り込み接合板の間で山折りする折り位置に、該折り位置の底面板側の端部から容器本体上面側となる途中部までに亘って、ブランクの容器内面側となる片面で凸としてなる折り罫が設けられ、
前記折り罫が設けられた折り位置に近接し、かつこの折り位置から前記二枚の折り込み接合板の内のいずれか一方側に偏倚した位置に、前記折り位置の折り罫が設けられた前記途中部から折り位置の容器本体上面位置となる端部までに沿って、ブランクの容器外面側となる片面に押罫を当てて容器内面側になる片面で凸としてなる凸条が設けられていることを特徴とする紙容器用ブランクを提供して、上記課題を解消するものである。 (Claim 1)
The present invention has been made in consideration of the above-mentioned problems, and a side plate is connected to each of the four sides of a square bottom plate, and an inverted triangle is formed between side plates adjacent in the circumferential direction of the bottom plate. A plurality of folding joint plates are arranged side by side, and the adjacent two folding joint plates are connected, and the adjacent side plates and the folded joint plates are connected,
The side plate is folded by mountain folding with the side of the bottom plate at the folding position, and the adjacent folding joining plates are overlapped by mountain folding with the folding between the adjacent folding joining plates. The folded and joined sheets are folded and overlapped on one side of one of the adjacent side plates which is the outer side of the container, and the upper surface of the container body is opened by being surrounded by the folded side plate. In a paper container blank provided so that a paper container is formed,
Convex on one side that is the container inner surface side of the blank from the end on the bottom plate side of the folding position to the middle part that is the upper surface side of the container body at the folding position where the two folded joint plates are folded Folding rules are provided,
The intermediate position where the folding ruler at the folding position is provided at a position close to the folding position at which the folding ruler is provided and at a position deviated from the folding position to either one of the two folded joint plates. From the part to the end part which becomes the container main body upper surface position of the folding position, a ridge which is convex on one side which becomes the container inner surface side is provided on the one side which becomes the container outer surface side of the blank A blank for paper containers is provided to solve the above-mentioned problems.

（請求項２）
そして、上記発明において、上記凸条は、上記二枚の折り込み接合板の内、上記一方の側面板の容器外面側となる片面に折り曲げたときに容器最外方に位置する折り込み接合板側に偏倚しているものとすることが可能である。 (Claim 2)
And in the said invention, when the said protruding item | line is bend | folded to the single side | surface used as the container outer surface side of said one side plate among the said two folding joining plates, it is in the folding joining plate side located in the container outermost side. It can be biased.

（請求項３）
また、もう一つの発明は、方形の底面板の四方の側辺それぞれに側面板が連接され、前記底面板の周方向で隣り合う側面板の間それぞれに逆三角形状にした二枚の折り込み接合板が並び設けられていて、隣り合う前記二枚の折り込み接合板が連接されているとともに、隣り合う側面板と折り込み接合板とが連接された紙容器用ブランクからなり、
前記ブランクの前記底面板の側辺を折り位置にした山折りにより前記側面板を折り起こし、隣り合う折り込み接合板の間を折り位置にした山折りにより前記隣り合う折り込み接合板同士を重ね合わせ、この重ね合わせた二枚の折り込み接合板を、前記隣り合う側面板の内の一方の側面板の容器外面側となる片面に折り曲げて重ね合わせ、折り起こされた前記側面板により四方が囲まれて容器本体上面が開放されてなる紙容器において、
前記二枚の折り込み接合板の間の折り位置を山折りした折り部の内面側に、前記山折りにより狭窄した隙間からなる狭窄路が折り部長さ方向に亘って形成されていて、この折り部内面側の狭窄路が、前記折り部の途中部で位置ズレしていることを特徴とする紙容器であり、この紙容器を提供して上記課題を解消するものである。 (Claim 3)
According to another aspect of the invention, there are two folded joint plates each having a side plate connected to each of the four sides of the square bottom plate, and each having an inverted triangular shape between the side plates adjacent in the circumferential direction of the bottom plate. It is provided side by side, and the two folded joint plates adjacent to each other are connected to each other, and the side wall plate and the folded joint plate are connected to each other.
The side plate is folded by mountain folding with the side of the bottom plate of the blank being in the folding position, and the adjacent folding joining plates are overlapped by mountain folding in the folding position between adjacent folding joining plates. The two folded joint plates together are folded and overlapped on one side of the side plate on one side of the side plate that is the outer side of the container, and the container body is surrounded on all sides by the folded side plate In a paper container with an open top,
A narrowing path composed of a gap narrowed by the mountain fold is formed on the inner surface side of the folded portion where the folding position between the two folded joint plates is folded, and this folded portion inner surface side is formed. The narrow path is misaligned in the middle of the folded portion, and this paper container is provided to solve the above-mentioned problems.

（請求項４）
そして、上記発明において、上記二枚の折り込み接合板の間で山折りした折り位置に、該折り位置の底面板側の端部から容器本体上面側である途中部までに亘って、ブランクの容器内面側となる片面で凸としてなる折り罫が形成され、
前記折り罫が設けられた折り位置に近接し、かつこの折り位置から前記二枚の折り込み接合板の内のいずれか一方側に偏倚した位置に、前記折り位置の折り罫が設けられた前記途中部から折り位置の容器本体上面位置となる端部までに沿って、ブランクの容器外面側となる片面に押罫を当てて容器内面側になる片面で凸としてなる凸条が形成されていて、
前記二枚の折り込み接合板の間の折り位置を山折りしてなる折り部の前記狭窄路は、前記折り罫の形成範囲と前記凸条の形成範囲との間を境にして位置ズレしているものとすることが可能である。 (Claim 4)
And in the said invention, the container inner surface side of a blank is carried out from the edge part by the side of the bottom face board of this folding position to the middle part which is the container main body upper surface side in the folding position folded between the said two folding joining boards. A crease that is convex on one side is formed,
The intermediate position where the folding ruler at the folding position is provided at a position close to the folding position at which the folding ruler is provided and at a position deviated from the folding position to either one of the two folded joint plates. A ridge that is convex on one side on the inner surface side of the container is formed by applying a rule to the one side that is the outer surface side of the blank along the end of the container body upper surface position of the folding position from the part,
The narrowing path of the folded portion formed by mountain-folding the folding position between the two folded joint plates is misaligned with the boundary between the formation range of the crease and the formation range of the ridges. Is possible.

（請求項５）
また、もう一つの発明は、上記紙容器における上記側面板の上記底面板とは反対側の辺に連接された縁片によりフランジが形成されていて、前記フランジに蓋板の外周辺を接合して、蓋板により容器本体上面が覆われていることを特徴とする紙容器を提供して、上記課題を解消するものである。 (Claim 5)
According to another aspect of the present invention, a flange is formed by an edge piece connected to the side of the side plate opposite to the bottom plate of the paper container, and the outer periphery of the lid plate is joined to the flange. Thus, a paper container characterized in that the upper surface of the container body is covered with a cover plate is provided to solve the above-mentioned problems.

（請求項１の発明の効果）
請求項１の発明によれば、このブランクの底面板周りの側面板を折り起こすとともに、隣り合う側面板の間の二枚の折り込み接合板をこの折り込み接合板の間の折り位置で山折りして重ね合わせて一方の側面板の外面側に折り曲げるようにして紙容器を組み上げれば、図７の（ａ）と（ｂ）に示すように、前記二枚の折り込み接合板の間を折曲した折り部では、その折り部の内面側となる表層部が集合して狭窄した隙間からなる狭窄路が形成されるようになる。 (Effect of the invention of claim 1)
According to the first aspect of the invention, the side plate around the bottom plate of the blank is folded, and the two folded joint plates between the adjacent side plates are folded at the folding position between the folded joint plates and overlapped. When the paper container is assembled so as to be folded to the outer surface side of one side plate, as shown in FIGS. 7A and 7B, the folded portion between the two folded joint plates is A constricted path formed by a narrowed gap is formed by the surface layer portions on the inner surface side of the folded portion gathering.

凸条がある部分では、重ね合わせで対向した折り込み接合板にその凸条が当接し、その凸条の凸部の縁に沿った位置で、隙間による狭窄路が形成された断面形状となる（図７（ａ）参照）。また、折り罫がある部分では、折り罫が折り位置に重なっているため、上述したように二枚の折り込み接合板の折り位置側の部分が、折り罫の凸部を挟み込む形状となり、折り罫の凸部が二枚の折り込み接合板の重ね合わせ目に向けて突き出て、その突き出た部分に沿って狭窄した隙間からなる狭窄路が形成された断面形状となる（図７（ｂ）参照）。 In the portion where the ridge is present, the ridge contacts the folded joint plate opposed by overlapping, and has a cross-sectional shape in which a narrowed path is formed by a gap at a position along the edge of the convex portion of the ridge ( FIG. 7 (a)). In addition, since the crease overlaps with the fold position in the part where the crease is present, the part on the fold position side of the two folded joint plates has a shape sandwiching the convex part of the crease as described above, and the crease Projecting toward the overlap of the two folded joint plates, and has a cross-sectional shape in which a narrowed path formed by a narrowed gap is formed along the projected portion (see FIG. 7B). .

そして、折り位置に沿った前記凸条がある部分での折り部内面側の狭窄路と、折り位置に重なる前記折り罫がある部分での折り部内面側の狭窄路とは、それぞれの狭窄路が形成される位置が異なっているため、互いに位置ズレした状態となる。 The narrow path on the inner surface side of the folded portion at the portion where the protruding line along the folding position is present and the narrow path on the inner surface side of the folded portion at the portion where the folding line is overlapped with the folding position are respectively narrowed paths. Since the positions at which are formed are different, the positions are shifted from each other.

このように、凸条がある部分での狭窄路と折り罫がある部分での狭窄路とが、凸条形成範囲と折り罫形成範囲との間を境にして位置ズレするため、上下逆さまになった紙容器での底面板側から二枚の折り込み接合板の折り位置に重なる前記狭窄路に融けた液体が入り込んだとしても、凸条形成範囲と折り罫形成範囲との境の部分で通り難くなり、或いは堰き止められることとなる。よって、上下逆さまになった紙容器の二枚の折り込み接合板の折り位置の容器本体上面側から融けた収容物が漏れ出る可能性を無くすることができる。 In this way, the narrow path in the part with the ridge and the narrow path in the part with the crease are misaligned between the ridge formation range and the crease formation range. Even if the melted liquid enters the narrow path that overlaps the folding position of the two folded joint plates from the bottom plate side in the formed paper container, it passes at the boundary between the ridge formation range and the crease formation range. It will be difficult or dammed up. Therefore, it is possible to eliminate the possibility that the melted contents leak from the upper surface side of the container main body at the folding position of the two folded joint plates of the paper container turned upside down.

（請求項２の発明の効果）
請求項２の発明によれば、上記凸条が、折り位置から容器最外方に位置する折り込み接合板側に偏倚している位置に設けられている。そして、前記凸条は、ブランクの容器外面側となる片面に押罫を当てて容器内面側になる片面で凸としてなるものであることから、製函に際して、二枚の折り込み接合板の間の折り位置で山折りして両折り込み接合板を重ね合わせ、その凸条が偏倚している側の折り込み接合板が容器最外方となるように二枚の折り込み接合板を側面板の外面側に折り曲げて重ね合わせるようにすれば、図８（ａ）に示すように、凸条（２０）が側面板（１４）側の折り込み接合板（１４１）に当接して容器最外方の折り込み接合板（１２１）に引っ張り力（ｆ１）を生じさせることとなり、その引っ張り力ｆ１によって、隣り合う側面板の側辺同士が突き合う部分に押圧力ｆ２が作用して、隣り合う側面板の側辺同士がより一層適切に当接し合うようになって、この側面板の側辺同士での間で隙間が生じるのを防止する上で効果がある。 (Effect of the invention of claim 2)
According to invention of Claim 2, the said protruding item | line is provided in the position biased to the folding joining board side located in the container outermost side from a folding position. And since the above-mentioned ridges are convex on one side on the inner surface side of the container by applying a ruled line to one side on the outer surface side of the blank, the folding position between the two folded joint plates during box making Fold both the folded joint plates together, and fold the two folded joint plates to the outer side of the side plate so that the folded joint plate on the side where the ridges are biased is at the outermost side of the container. If they are overlapped, as shown in FIG. 8 (a), the ridges (20) abut against the folding joint plate (141) on the side plate (14) side and the outermost folding joint plate (121). ) Is caused to generate a pulling force (f1), and the pulling force f1 causes a pressing force f2 to act on the portion where the sides of the adjacent side plates abut against each other. To come into contact with each other more appropriately Is effective in preventing a gap from occurring between the side edges to each other in the side plates.

なお、図８（ｂ）では二枚の折り込み接合板の間において折り罫（１７）が位置する部分での断面を示しており、この高さ位置においても隣り合う側面板の側辺同士が突き合う部分に或る程度の押圧力は作用している。 FIG. 8 (b) shows a cross section at a portion where the crease (17) is located between the two folded joint plates, and the sides of adjacent side plates abut each other even at this height position. A certain amount of pressing force is applied.

（請求項３の発明の効果）
請求項３の発明によれば、上下逆さまになった紙容器での底面板側から二枚の折り込み接合板の狭窄路に融けた液体が入り込んだとしても、位置ズレしている部分で流れに対する堰となって通り難くなり、或いは堰き止められることとなる。よって、収容物を充填して蓋板で閉じられた紙容器が上下逆さまになっても、二枚の折り込み接合板の折り位置の容器本体上面側から融けた収容物が漏れ出る可能性を無くすることができる。 (Effect of the invention of claim 3)
According to the invention of claim 3, even if the melted liquid enters the narrow path of the two folded joint plates from the bottom plate side of the paper container turned upside down, the flow is shifted in the misaligned portion. It becomes difficult to pass through as a weir, or it is blocked. Therefore, even if the paper container filled with the contents and closed with the lid plate is turned upside down, there is no possibility that the melted contents leak from the upper surface side of the container body at the folding position of the two folding joint plates. can do.

（請求項４の発明の効果）
請求項４の発明によれば、凸条がある部分での狭窄路と折り罫がある部分での狭窄路とが、凸条形成範囲と折り罫形成範囲との間を境にして位置ズレするため、上下逆さまになった紙容器での底面板側から二枚の折り込み接合板の折り位置に重なる前記狭窄路に融けた液体が入り込んだとしても、凸条形成範囲と折り罫形成範囲との境の部分で流れに対する堰となって通り難くなり、或いは堰き止められることとなる。よって、収容物を充填して蓋板で閉じられた紙容器が上下逆さまになっても、二枚の折り込み接合板の折り位置の容器本体上面側から融けた収容物が漏れ出る可能性を無くすることができる。 (Effect of the invention of claim 4)
According to the invention of claim 4, the narrow path in the portion with the ridge and the narrow path in the portion with the crease are misaligned between the ridge formation range and the crease formation range. Therefore, even if the melted liquid enters the narrow path that overlaps the folding position of the two folded joint plates from the bottom plate side in the upside down paper container, the ridge formation range and the crease formation range At the border, it becomes a weir against the flow and it becomes difficult to pass or it is blocked. Therefore, even if the paper container filled with the contents and closed with the lid plate is turned upside down, there is no possibility that the melted contents leak from the upper surface side of the container body at the folding position of the two folding joint plates. can do.

請求項５の発明によれば、上記二枚の折り込み接合板の間の折り位置において狭窄路に位置ズレした部分があるので、その部分が堰となって上下逆さまになった紙容器での底面板側から狭窄路に融けた液体が入り込んだとしても、その狭窄路中を通り抜け難くなり、或いは狭窄路中で堰き止められることとなる。よって、上下逆さまになった紙容器の二枚の折り込み接合板の折り位置の容器本体上面側から融けた収容物が漏れ出る可能性を無くすることができる。 According to the invention of claim 5, since there is a portion shifted in the narrow path at the folding position between the two folded joint plates, the bottom plate side in the paper container that is turned upside down as that portion Even if the melted liquid enters the narrow path, it becomes difficult to pass through the narrow path or it is dammed in the narrow path. Therefore, it is possible to eliminate the possibility that the melted contents leak from the upper surface side of the container main body at the folding position of the two folded joint plates of the paper container turned upside down.

本発明に係るフランジ付き紙容器用ブランクの実施の形態を示す説明図である。It is explanatory drawing which shows embodiment of the blank for paper containers with a flange which concerns on this invention. フランジ付き紙容器用ブランクの実施の形態の要部を拡大して示す説明図である。It is explanatory drawing which expands and shows the principal part of embodiment of the paper container blank with a flange. ブランクから紙容器を組み起こす状態を示す説明図である。It is explanatory drawing which shows the state which raises a paper container from a blank. ブランクから紙容器を組み起こす状態での折り込み接合板と第二折り込み接合板との山折りを示す説明図である。It is explanatory drawing which shows the mountain fold of the folding joint plate and the 2nd folding joint plate in the state which assembles a paper container from a blank. フランジ付き紙容器の実施の形態を斜め上方から見た状態で示す説明図である。It is explanatory drawing shown in the state which looked at embodiment of the paper container with a flange from diagonally upward. 二枚の折り込み接合板の折り部における狭窄路を容器側方から見た位置で概略的に示す説明図である。It is explanatory drawing which shows roughly the position which looked at the narrow path in the folding part of two folding joining boards from the container side. 実施の形態での折り込み接合板と第二折り込み接合板とが重ね合わされている状態を断面で示す説明図である。It is explanatory drawing which shows the state in which the folding joint plate and 2nd folding joint plate in embodiment are overlaid by a cross section. 隣り合う側面板の側辺同士の突き当て状態を断面で概略的に示す説明図である。It is explanatory drawing which shows roughly the abutting state of the side edges of an adjacent side plate in a cross section. 従来の形態をブランクで示す説明図である。It is explanatory drawing which shows the conventional form with a blank. 従来の形態における折り込み接合板と第二折り込み接合板とを拡大して示す説明図である。It is explanatory drawing which expands and shows the folding joint board and 2nd folding joint board in the conventional form. 従来の紙容器を斜め上方から見た状態で示す説明図である。It is explanatory drawing shown in the state which looked at the conventional paper container from diagonally upward. 従来の紙容器を斜め下方から見た状態で示す説明図である。It is explanatory drawing shown in the state which looked at the conventional paper container from diagonally downward. 折り込み接合板と第二折り込み接合板との重ね合わせと折り曲げを概略的に示す説明図である。It is explanatory drawing which shows roughly the superimposition and bending of a folding joining board and a 2nd folding joining board. 従来のブランクにおいて二枚の折り込み接合板の間からの山折り過程を示す説明図である。It is explanatory drawing which shows the mountain fold process from between the two folding joining plates in the conventional blank. 二枚の折り込み接合板の山折りを断面で示す説明図である。It is explanatory drawing which shows the mountain fold of two folding joining boards in a cross section. 従来の紙容器を上下逆さまにした状態にて液漏れを示す説明図である。It is explanatory drawing which shows a liquid leak in the state which turned the conventional paper container upside down.

つぎに本発明を図１から図８に示す実施の形態に基づいて詳細に説明する。なお、図９から図１６に示す従来の技術を構成が重複する部分は同符号を付してその説明を省略する。 Next, the present invention will be described in detail based on the embodiment shown in FIGS. 9 to FIG. 16 are denoted by the same reference numerals, and description thereof is omitted.

（紙容器用ブランク）
本発明のフランジ付きの紙容器１を得るブランクにおいては、隣り合って連接されている折り込み接合板１２１と第二折り込み接合板１４１との間の折り位置周りにおける構成が従来の技術と異なっている。上述したように折り込み接合板１２１の側面板１２とは反対側の側辺と第二折り込み接合板１４１の第二側面板１４とは反対側の側辺とが連続していて、この折り込み接合板１２１と第二折り込み接合板１４１とで共通する前記側辺の位置を折り位置１９とし、この折り位置１９から山折りすることで折り込み接合板１２１と第二接合板１４１とを重ね合わせることができるように設けられている。 (Paper container blank)
In the blank for obtaining the flanged paper container 1 of the present invention, the configuration around the folding position between the folding joint plate 121 and the second folding joint plate 141 that are adjacently connected is different from the conventional technique. . As described above, the side of the folding and joining plate 121 opposite to the side plate 12 and the side of the second folding and joining plate 141 opposite to the second side plate 14 are continuous, and this folding and joining plate. The side position common to 121 and the second folding joint plate 141 is set as the folding position 19, and the folding joint plate 121 and the second joint plate 141 can be overlapped by folding from the folding position 19. It is provided as follows.

上記折り込み接合板１２１と第二折り込み接合板１４１との間には、底面板１１の隅部に一端部が繋がるように配された折り罫１７と容器本体上面寄りとなる部分に配された凸条２０とが設けられている（図１と図２）。この折り込み接合板１２１と第二折り込み接合板１４１との間に配された前記折り罫１７は他の部位に形成されている折り罫１７と同じであり、折り位置１９の底面板１１側の端部１９ａから容器本体上面側となる途中部１９ｂまでに亘ってブランクの容器内面側となる片面で凸としてなるものである。図示のように他の部位の折り罫１７と同様にこの部分での折り罫１７も、折り罫中心が折り位置１９に一致するようにしてこの折り位置１９に重なって配置されている。 Between the fold joint plate 121 and the second fold joint plate 141, a crease 17 disposed so that one end of the bottom plate 11 is connected to a corner of the bottom plate 11 and a convex disposed on a portion closer to the upper surface of the container body. Article 20 is provided (FIGS. 1 and 2). The crease 17 disposed between the fold-joint plate 121 and the second fold-joint plate 141 is the same as the crease 17 formed in other parts, and the end of the fold position 19 on the bottom plate 11 side. From the part 19a to the middle part 19b which becomes the container main body upper surface side, it becomes convex by the single side | surface which becomes the container inner surface side of a blank. As shown in the figure, the crease 17 in this part is arranged so as to overlap the fold position 19 so that the center of the crease coincides with the fold position 19 in the same manner as the crease 17 in other parts.

一方、凸条２０は上記折り位置１９に近接していて、かつこの折り位置１９から折り込み接合板１２１側に偏倚した位置に設けられている。折り位置１９から前記凸条２０が偏倚する方向は、二枚の折り込み接合板１２１、１４１の内、容器として組み起こす時に重ね合わされて第二側面板１４の外面側に折り曲げた際に容器最外方となる面板の方に偏倚させており、この実施の形態では折り込み接合板１２１側に偏倚している。そして、偏倚させた量（ズレ量）は、本実施の形態では、凸条２０の一方の縁が折り位置１９の位置に重なる量としている。 On the other hand, the ridge 20 is provided close to the folding position 19 and at a position deviated from the folding position 19 toward the folding joint plate 121. The direction in which the ridge 20 is biased from the folding position 19 is the outermost side of the container when the two folded joint plates 121 and 141 are overlapped when assembled as a container and folded to the outer surface side of the second side plate 14. In this embodiment, the face plate is biased toward the folded joint plate 121 side. In this embodiment, the biased amount (deviation amount) is set such that one edge of the ridge 20 overlaps the position of the folding position 19.

凸条２０自体は上記折り罫１７と同様に形成されているものであって、ブランクの容器外面側となる片面から押罫を当てて容器内面側となる片面に凸となるようにしているものであり、折り位置１９での前記折り罫１７が設けられた前記途中部１９ｂから折り位置１９の容器本体上面位置となる端部１９ｃまでに沿って形成されている。 The ridges 20 themselves are formed in the same manner as the creases 17 and are projected from one side on the container outer surface side of the blank so as to be convex on one surface on the container inner surface side. And is formed from the middle portion 19b where the folding ruler 17 is provided at the folding position 19 to the end portion 19c which is the container body upper surface position at the folding position 19.

このように紙容器を得るための本発明のブランクでは、折り込み接合板１２１と第二折り込み接合板１４１との間に、折り位置１９の底面板１１側の端部から前記途中部１９ｂまでに亘って折り罫１７を形成しているとともに、上記凸条２０が前記折り位置１９から折り込み接合板１２１に偏倚し、かつ折り位置１９の途中部１９ｂから容器本体上面位置となる端部１９ｃまでに沿って形成されている。折り罫１７と凸条２０との幅は同じであるとともに、図示されているように前記折り罫１７と凸条２０との端部同士は途中部１９ｂの位置で位置ズレした状態で連続している。 Thus, in the blank of this invention for obtaining a paper container, it extends from the edge part by the side of the bottom face board 11 of the folding position 19 to the said intermediate part 19b between the folding joining board 121 and the 2nd folding joining board 141. The ridges 20 are formed, and the ridges 20 are biased from the folding position 19 to the folding joining plate 121 and extend from the middle portion 19b of the folding position 19 to the end portion 19c which is the upper surface position of the container body. Is formed. The widths of the creases 17 and the ridges 20 are the same, and as shown in the drawing, the ends of the creases 17 and the ridges 20 are continuously shifted in the middle portion 19b. Yes.

実施の形態では、折り罫中心位置と凸条中心位置との折り位置１９の直交方向でのズレ量は、最大で押罫（刃）一本の厚み分とすることができるが、０．１ｍｍ〜０．７ｍｍの範囲をズレ量とすることが良好である。このズレ量を大きく取り過ぎると折り位置で折り曲げることができなくなる可能性が生じる。なお、氷菓を収容する紙容器を得る本ブランクに対して上記折り罫と上記凸条とを形成する押罫は、その厚みが一般的に０．７ｍｍ程度である。 In the embodiment, the amount of deviation in the orthogonal direction of the folding position 19 between the crease center position and the ridge center position can be a maximum of the thickness of one crease (blade), but 0.1 mm It is preferable to set the amount of deviation in a range of ˜0.7 mm. If this amount of deviation is excessively large, there is a possibility that it cannot be folded at the folding position. In addition, the thickness of the ruled line that forms the fold ruled line and the protruding line with respect to the present blank for obtaining a paper container for storing ice confectionery is generally about 0.7 mm.

折り込み接合板１２１と第二折り込み接合板１４１の間において折り罫１７と凸条２０とが位置ズレする上記途中部１９ｂの位置は、上記本体上面位置となる側に寄った部分に設定されている。その理由について説明すれば、従来技術の不具合に関して述べたように、このブランクを組み起こして得られた容器本体にアイスクリームなどの氷菓を充填して施蓋してなる紙容器が上下逆さまとなった際に、融けた収容物の一部が二枚の折り込み接合板の間の折り部内部を通って漏れ出る可能性があり、この不具合が生じない紙容器を得るために、本発明のブランクは折り込み接合板１２１と第二折り込み接合板１４１との間に折り罫１７と凸条２０とを上述のようにして配した構成としている。 The position of the intermediate portion 19b where the crease 17 and the ridge 20 are displaced between the fold joint plate 121 and the second fold joint plate 141 is set to a portion close to the main body upper surface position. . If we explain the reason, as described for the problems of the prior art, the paper container made by filling the container body with ice cream and other ice confectionery into the container body obtained by assembling this blank is upside down. In order to obtain a paper container in which a part of the melted contained material may leak through the inside of the folded portion between the two folded joint plates and this defect does not occur, the blank of the present invention is folded. The folding ruler 17 and the ridges 20 are arranged as described above between the bonding plate 121 and the second folding bonding plate 141.

そして、本発明のブランクから得られる紙容器にあっては、前記二枚の折り込み接合板１２１，１４１の折り部の内部に後述の狭窄路が得られ、その狭窄路は、折り罫１７がある部分と凸条２０がある部分とで位置ズレをすることとなり、収容物の融けた液体が通り難くなるようになる。上下逆さまの紙容器において、収容物が融けた際、その液体が入り込む部分は、前記二枚の折り込み接合板１２１，１４１の間の狭窄路の底面板側の端部に限らない。折り込み接合板１２１，１４１の接合面の間を通って折り部中段の高さ位置となる部分の狭窄路に達することも考慮される。そこで、折り部中段の高さ位置になる狭窄路に液体が入り込んだとした場合にも、狭窄路を通ってフランジ側の端部までに液体が漏れ出るということが生じないようにする必要がある。そのために、折り罫１７と凸条２０とが位置ズレする部分を容器本体上面側に寄せた状態としている。 And in the paper container obtained from the blank of this invention, the below-mentioned constriction path is obtained inside the folding part of the said two folding joining plates 121 and 141, The narrow path has the crease 17 Position misalignment between the portion and the portion having the ridges 20 makes it difficult for the melted liquid in the contents to pass through. In the upside down paper container, when the contents are melted, the portion into which the liquid enters is not limited to the end on the bottom plate side of the narrow path between the two folded joint plates 121 and 141. It is also considered that the narrowed path of the portion that is the height position of the middle part of the folded portion passes through between the joint surfaces of the folding joint plates 121 and 141. Therefore, even when the liquid enters the narrow path that is at the height of the middle part of the folding section, it is necessary to prevent the liquid from leaking through the narrow path to the end on the flange side. is there. Therefore, the part where the crease 17 and the ridge 20 are misaligned is brought close to the upper surface of the container body.

なお、重ね合わされる二枚の折り込み接合板１２１，１４１は逆三角形状であって容器本体上面側での幅寸法は十分に大きいため、収容物が融けて生じた液体がこの容器本体上面の部分において二枚の折り込み接合板１２１，１４１の間を伝って狭窄路に入り込むことは無い。また、同じくこの二枚の折り込み接合板１２１，１４１の容器本体上面側での幅寸法は十分に大きいため、組み起こされる際にこの容器本体上面側での対向面同士が密に接合し合うにようになり、融けた液体が二枚の折り込み接合板１２１、１４１の間に入り込んでから折り部内にまで及ぶことが無いと考えられる。よって、この点からも、本発明のブランクにおいて、折り罫１７と凸条２０とが位置ズレする部分を、ブランクで図示しているように容器本体上面側に近接位置させている。 The two folded joint plates 121 and 141 to be overlapped have an inverted triangular shape and the width dimension on the upper surface side of the container main body is sufficiently large. In this case, it does not enter between the two folded joint plates 121 and 141 and enter the narrow path. Similarly, the width of the two folded joint plates 121 and 141 on the upper surface side of the container body is sufficiently large so that the opposing surfaces on the upper surface side of the container body are closely joined together when assembled. Thus, it is considered that the melted liquid does not reach the inside of the folded portion after entering between the two folded joint plates 121 and 141. Therefore, also from this point, in the blank of the present invention, the portion where the crease 17 and the ridge 20 are misaligned is positioned close to the upper surface of the container body as shown by the blank.

（紙容器）
ブランクからフランジ付き紙容器１を得るための組立ては先に従来例のものと同じであってつぎのようにして製函機にて行う。側面板１２、第二側面板１４を折り曲げてトレー状に組み立てながら、折り込み接合板１２１と第二折り込み接合板１４１の内面同士を接合するように重ね合わせる（図３、図４参照）。折り込み接合板１２１と第二折り込み接合板１４１とは重ね合わせを進めると同時に第二側面板１４側に折り曲げられる。 (Paper container)
The assembly for obtaining the flanged paper container 1 from the blank is the same as that of the conventional example, and is performed by the box making machine as follows. While folding the side plate 12 and the second side plate 14 into a tray shape, they are overlapped so that the inner surfaces of the folded joint plate 121 and the second folded joint plate 141 are joined together (see FIGS. 3 and 4). The folding joining plate 121 and the second folding joining plate 141 are folded toward the second side face plate 14 at the same time as the overlapping is advanced.

これと共に縁片１３、第二縁片１５、接合縁片１２２がそれぞれ谷折りされ、折り込み接合板１２１と第二折り込み接合板１４１との前記第二側面板１４へ折り曲げた重ね合わせにより接合縁片１２２の上面とこの上に重なっている第二縁片１５の下面とが相対し、この相対する接合縁片１２２と第二縁片１５とをヒートシールするとともに、側面板１２と第二側面板１４との折り曲げにより前記舌片１３１の上面と第二舌片１５１の下面とが相対していて、この舌片１３１と第二舌片１５１とをヒートシールして、前記縁片１３と第二縁片１５とが連続してなるフランジ１６が形成されて、フランジ付きの形態となる紙容器１が組み上がる（図５参照）。 At the same time, the edge piece 13, the second edge piece 15, and the joining edge piece 122 are each folded into a valley and joined to the second side plate 14 by folding the joining plate 121 and the second folding joining plate 141. The upper surface of 122 is opposed to the lower surface of the second edge piece 15 that overlaps the upper surface, and the joint edge piece 122 and the second edge piece 15 that face each other are heat-sealed. 14, the upper surface of the tongue piece 131 and the lower surface of the second tongue piece 151 are opposed to each other, and the tongue piece 131 and the second tongue piece 151 are heat-sealed, and the edge piece 13 and the second tongue piece 151 are A flange 16 formed continuously with the edge piece 15 is formed, and the paper container 1 having a flanged form is assembled (see FIG. 5).

上述のようにして製函されて本体上面が開放されている紙容器１において、第二側面板１４に折り曲げられている上記折り込み接合板１２１と第二折り込み接合板１４１との配置は、容器最外方に折り込み接合板１２１が位置し、この折り込み接合板１２１の第二側面板１４側に第二折り込み接合板１４１が位置する配置となる。また、上記ブランクの形態では、折り込み接合板１２１と第二折り込み接合板１４１との間に、上記折り罫１７が山折りの折り位置１９にあるとともに、折り位置１９から折り込み接合板１２１側に偏倚して前記折り罫１７に位置ズレの状態とした上記凸条２０がある。 In the paper container 1 which has been boxed as described above and the upper surface of the main body is opened, the arrangement of the folding joint plate 121 and the second folding joint plate 141 folded on the second side plate 14 is the most suitable for the container. The folded joint plate 121 is positioned outward, and the second folded joint plate 141 is positioned on the second side plate 14 side of the folded joint plate 121. Moreover, in the form of the blank, the folding ruler 17 is located at the folding position 19 of the mountain fold between the folding joining plate 121 and the second folding joining plate 141 and is biased from the folding position 19 toward the folding joining plate 121. Thus, the ridges 20 are located on the crease 17 so as to be misaligned.

そして、重ね合わされた折り込み接合板１２１と第二折り込み接合板１４１との間の折り部２１（山折りとされた部分）の内面側において、前記山折りにより狭窄した隙間からなる狭窄路１８は、折り罫１７及び凸条２０の凸部１７ａ，２０ａと二枚の折り込み接合板１２１、１４１の合わせ目との間に生じて折り部２１の長さ方向に形成されている（図６）。 Then, on the inner surface side of the folded portion 21 (the portion folded into a mountain) between the folded folding bonding plate 121 and the second folding bonding plate 141, the narrowed path 18 composed of the gap narrowed by the mountain folding is: It is formed between the ridges 17 and the convex portions 17a and 20a of the ridges 20 and the joints of the two folded joint plates 121 and 141, and is formed in the length direction of the fold portion 21 (FIG. 6).

さらに、前記狭窄路１８は、前記折り罫１７の形成範囲２１ａの狭窄路１８Ａと前記凸条２０の形成範囲２１ｂの狭窄路１８Ｂとは位置ズレした状態で区分される。即ち、折り罫１７と凸条２０とが位置ズレしていることから、折り罫１７の凸部１７ａに沿う隙間の位置と凸条２０の凸部２０ａに沿う隙間の位置とが相違することとなり、狭窄路１８Ａと狭窄路１８Ｂとはその間である折り位置１９の途中部１９ｂに対応する位置を境にして位置ズレしている（図６、図７参照）。図７において（ａ）は図６Ｘ１−Ｘ１線に沿った折り部（折り罫形成範囲）の断面を示し、（ｂ）は図６Ｘ２−Ｘ２線に沿った折り部（凸条形成範囲）の断面を示している。 Furthermore, the narrow path 18 is divided in a state where the narrow path 18A in the formation area 21a of the crease 17 and the narrow path 18B in the formation area 21b of the ridge 20 are misaligned. That is, since the crease 17 and the ridge 20 are misaligned, the position of the gap along the projection 17a of the crease 17 and the position of the gap along the projection 20a of the ridge 20 are different. The narrow path 18A and the narrow path 18B are misaligned with respect to a position corresponding to the middle portion 19b of the folding position 19 between them (see FIGS. 6 and 7). 7A shows a cross section of the folded portion (folded rule forming range) along the line X1-X1 in FIG. 6B, and FIG. 7B shows a cross section of the folded portion (projected line forming range) along the line X2-X2 in FIG. Is shown.

このように、折り罫１７がある部分での狭窄路１８Ａと凸条２０がある部分での狭窄路１８Ｂとが、折り罫形成範囲２１ａと凸条形成範囲２１ｂとの間を境にして位置ズレしているため、位置ズレ個所での狭窄状態が更に密になっており、液体の通過を困難、或いは通過不能となっている。 As described above, the narrow path 18A in the portion with the crease 17 and the narrow path 18B in the portion with the ridge 20 are misaligned with respect to the boundary between the crease formation range 21a and the ridge formation range 21b. For this reason, the constricted state at the position misalignment is further dense, making it difficult or impossible to pass the liquid.

上述の構成の紙容器１に対してアイスクリームなどの氷菓材料を充填し、紙板材からなる蓋板２２を被せ付けて蓋板２２の周辺と上記フランジ１６とをヒートシールにより接着することで、収容部を蓋板で封止した紙容器となる。この紙容器を用いた氷菓の商品は冷凍して流通段階を経て販売されるものとなる。 By filling the paper container 1 having the above-described structure with ice confectionery material such as ice cream, covering the cover plate 22 made of a paper plate material, and bonding the periphery of the cover plate 22 and the flange 16 by heat sealing, It becomes a paper container which sealed the accommodating part with the lid. Ice confectionery products using this paper container are frozen and sold through a distribution stage.

そして、一般消費者がこの商品を購入して運ぶ際に収容物の一部が融けて、さらに紙容器が上下逆さまになっても、重ね合わされた折り込み接合板１２１と第二折り込み接合板１４１との間の折り部２１について上述の構成となっていることから、融けた液体の漏れ出しを防止できる。即ち、上下逆さまになった紙容器での底面板側などから上記狭窄路１８Ａに融けた液体が入り込んだとしても、折り罫形成範囲２１ａと凸条形成範囲２１ｂとの境の部分で通り難くなり、或いは堰き止められることとなる。よって、上下逆さまになった紙容器の二枚の折り込み接合板の折り位置の容器本体上面側から融けた収容物が漏れ出る可能性を無くすることができる。 And when a general consumer purchases and carries this product, even if a part of the contents melts and the paper container is turned upside down, the folded folding joining plate 121 and the second folding joining plate 141 Since the folding portion 21 between the two has the above-described configuration, leakage of melted liquid can be prevented. That is, even if a melted liquid enters the narrow path 18A from the bottom plate side of a paper container turned upside down, it becomes difficult to pass at the boundary between the crease forming area 21a and the ridge forming area 21b. Or it will be dammed up. Therefore, it is possible to eliminate the possibility that the melted contents leak from the upper surface side of the container main body at the folding position of the two folded joint plates of the paper container turned upside down.

１…フランジ付き紙容器
１２…側面板
１２１…折り込み接合板
１４…第二側面板
１４１…第二折り込み接合板
１６…フランジ
１７…折り罫
１７ａ…折り罫の凸部
１８…狭窄路
１８Ａ…狭窄路
１８Ｂ…狭窄路
１９…折り位置
１９ｂ…折り位置の途中部
２０…凸条
２０ａ…凸部
２１…折り部
２１ａ…折り罫の形成範囲
２１ｂ…凸条の形成範囲
２２…蓋板 DESCRIPTION OF SYMBOLS 1 ... Paper container with a flange 12 ... Side plate 121 ... Folding joining plate 14 ... Second side joining plate 141 ... Second folding joining plate 16 ... Flange 17 ... Folding rule 17a ... Convex part 18 ... Narrow path 18A ... Narrow path 18B: Narrow path 19 ... Folding position 19b ... Middle part of the folding position 20 ... Convex ridge 20a ... Convex part 21 ... Folding part 21a ... Folded ridge formation range 21b ... Convex ridge formation range 22 ... Cover plate

Claims

方形の底面板の四方の側辺それぞれに側面板が連接され、前記底面板の周方向で隣り合う側面板の間それぞれに逆三角形状にした二枚の折り込み接合板が並び設けられていて、隣り合う前記二枚の折り込み接合板が連接されているとともに、隣り合う側面板と折り込み接合板とが連接され、
前記底面板の側辺を折り位置にした山折りにより前記側面板を折り起こし、隣り合う折り込み接合板の間を折り位置にした山折りにより前記隣り合う折り込み接合板同士を重ね合わせ、この重ね合わせた二枚の折り込み接合板を、前記隣り合う側面板の内の一方の側面板の容器外面側となる片面に折り曲げて重ね合わせ、折り起こされた前記側面板により四方が囲まれて容器本体上面が開放されてなる紙容器が形成されるように設けられている紙容器用ブランクにおいて、
前記二枚の折り込み接合板の間で山折りする折り位置に、該折り位置の底面板側の端部から容器本体上面側となる途中部までに亘って、ブランクの容器内面側となる片面で凸としてなる折り罫が設けられ、
前記折り罫が設けられた折り位置に近接し、かつこの折り位置から前記二枚の折り込み接合板の内のいずれか一方側に偏倚した位置に、前記折り位置の折り罫が設けられた前記途中部から折り位置の容器本体上面位置となる端部までに沿って、ブランクの容器外面側となる片面に押罫を当てて容器内面側になる片面で凸としてなる凸条が設けられていることを特徴とする紙容器用ブランク。 A side plate is connected to each of the four sides of the square bottom plate, and two inverted joining plates in the form of inverted triangles are arranged side by side between adjacent side plates in the circumferential direction of the bottom plate. The two folded joint plates are connected, and adjacent side plates and the folded joint plates are connected,
The side plate is folded by mountain folding with the side of the bottom plate at the folding position, and the adjacent folding joining plates are overlapped by mountain folding with the folding between the adjacent folding joining plates. The folded and joined sheets are folded and overlapped on one side of one of the adjacent side plates which is the outer side of the container, and the upper surface of the container body is opened by being surrounded by the folded side plate. In a paper container blank provided so that a paper container is formed,
Convex on one side that is the container inner surface side of the blank from the end on the bottom plate side of the folding position to the middle part that is the upper surface side of the container body at the folding position where the two folded joint plates are folded Folding rules are provided,
The intermediate position where the folding ruler at the folding position is provided at a position close to the folding position at which the folding ruler is provided and at a position deviated from the folding position to either one of the two folded joint plates. From the part to the end part which becomes the container main body upper surface position of the folding position, a ridge which is convex on one side which becomes the container inner surface side is provided on the one side which becomes the container outer surface side of the blank Blank for paper containers.

上記凸条は、上記二枚の折り込み接合板の内、上記一方の側面板の容器外面側となる片面に折り曲げたときに容器最外方に位置する折り込み接合板側に偏倚している請求項１に記載の紙容器用ブランク。 The ridges are biased toward the folding joint plate located on the outermost side of the container when the one of the two folding joint plates is folded to one side which is the container outer surface side of the one side plate. The paper container blank according to 1.

方形の底面板の四方の側辺それぞれに側面板が連接され、前記底面板の周方向で隣り合う側面板の間それぞれに逆三角形状にした二枚の折り込み接合板が並び設けられていて、隣り合う前記二枚の折り込み接合板が連接されているとともに、隣り合う側面板と折り込み接合板とが連接された紙容器用ブランクからなり、
前記ブランクの前記底面板の側辺を折り位置にした山折りにより前記側面板を折り起こし、隣り合う折り込み接合板の間を折り位置にした山折りにより前記隣り合う折り込み接合板同士を重ね合わせ、この重ね合わせた二枚の折り込み接合板を、前記隣り合う側面板の内の一方の側面板の容器外面側となる片面に折り曲げて重ね合わせ、折り起こされた前記側面板により四方が囲まれて容器本体上面が開放されてなる紙容器において、
前記二枚の折り込み接合板の間の折り位置を山折りした折り部の内面側に、前記山折りにより狭窄した隙間からなる狭窄路が折り部長さ方向に亘って形成されていて、この折り部内面側の狭窄路が、前記折り部の途中部で位置ズレしていることを特徴とする紙容器。 A side plate is connected to each of the four sides of the square bottom plate, and two inverted joining plates in the form of inverted triangles are arranged side by side between adjacent side plates in the circumferential direction of the bottom plate. The two folded joint plates are connected to each other, and are composed of a paper container blank in which adjacent side plates and folded joint plates are connected,
The side plate is folded by mountain folding with the side of the bottom plate of the blank being in the folding position, and the adjacent folding joining plates are overlapped by mountain folding in the folding position between adjacent folding joining plates. The two folded joint plates together are folded and overlapped on one side of the side plate on one side of the side plate that is the outer side of the container, and the container body is surrounded on all sides by the folded side plate In a paper container with an open top,
A narrowing path composed of a gap narrowed by the mountain fold is formed on the inner surface side of the folded portion where the folding position between the two folded joint plates is folded, and this folded portion inner surface side is formed. The paper container is characterized in that the narrowing path is misaligned in the middle of the folded portion.

上記二枚の折り込み接合板の間で山折りした折り位置に、該折り位置の底面板側の端部から容器本体上面側である途中部までに亘って、ブランクの容器内面側となる片面で凸としてなる折り罫が形成され、
前記折り罫が設けられた折り位置に近接し、かつこの折り位置から前記二枚の折り込み接合板の内のいずれか一方側に偏倚した位置に、前記折り位置の折り罫が設けられた前記途中部から折り位置の容器本体上面位置となる端部までに沿って、ブランクの容器外面側となる片面に押罫を当てて容器内面側になる片面で凸としてなる凸条が形成されていて、
前記二枚の折り込み接合板の間の折り位置を山折りしてなる折り部の前記狭窄路は、前記折り罫の形成範囲と前記凸条の形成範囲との間を境にして位置ズレしている請求項３に記載の紙容器。 Convex on one side that is the container inner surface side of the blank from the end on the bottom plate side of the folding position to the middle part on the container main body upper surface side at the folded position between the two folded joint plates A crease is formed,
The intermediate position where the folding ruler at the folding position is provided at a position close to the folding position at which the folding ruler is provided and at a position deviated from the folding position to either one of the two folded joint plates. A ridge that is convex on one side on the inner surface side of the container is formed by applying a rule to the one side that is the outer surface side of the blank along the end of the container body upper surface position of the folding position from the part,
The narrowing path of the fold portion formed by mountain-folding the folding position between the two folded joint plates is misaligned with a boundary between the formation range of the crease and the formation range of the ridges. Item 4. A paper container according to Item 3.

請求項３または４に記載の紙容器における上記側面板の上記底面板とは反対側の辺に連接された縁片によりフランジが形成されていて、前記フランジに蓋板の外周辺を接合して、蓋板により容器本体上面が覆われていることを特徴とする紙容器。 A flange is formed by an edge piece connected to the side opposite to the bottom plate of the side plate in the paper container according to claim 3 or 4, and the outer periphery of the lid plate is joined to the flange. A paper container, wherein the upper surface of the container body is covered with a cover plate.