JP2017202870A - Paper container - Google Patents

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JP2017202870A
JP2017202870A JP2016097470A JP2016097470A JP2017202870A JP 2017202870 A JP2017202870 A JP 2017202870A JP 2016097470 A JP2016097470 A JP 2016097470A JP 2016097470 A JP2016097470 A JP 2016097470A JP 2017202870 A JP2017202870 A JP 2017202870A
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paper container
layer
plate
paper
base material
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久貴 山本
Hisataka Yamamoto
久貴 山本
智彦 真鍋
Tomohiko Manabe
智彦 真鍋
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a paper container that can suppress a decrease in sealability while suppressing an increase in manufacture cost, and can be easily decomposed after being used.SOLUTION: The present invention relates to a gable top type paper container A that is composed of a blank plate having a thermoplastic outer face adhesion layer 1, a paper base material layer 2 made of paper, an intermediate layer 4 having a barrier layer 4b with gas barrier properties arranged on one surface of a barrier base material layer 4a, and a thermoplastic inner surface adhesion layer 6 stacked in order from an outer surface side, and comprises a cylindrically-sectioned body part 10, a top part 20 closing a top face of the body part 10, and a bottom part 30 closing a bottom face of the body part 10. A cutting predetermined part E extending substantially horizontally is provided at an upper part of the body part 10, and the cutting predetermined part E consists of many flaws D including, at both its ends, an inner end face of the intermediate layer 4 and a thickness-directional intermediate part of the paper base material layer 2.SELECTED DRAWING: Figure 5

Description

本発明は、ゲーベルトップ型の紙容器に関し、特に使用済みとなった紙容器を廃棄する際、容易に解体できるゲーベルトップ型の紙容器に関する。   The present invention relates to a paperbell type paper container, and more particularly to a paperbell type paper container that can be easily disassembled when the used paper container is discarded.

酒類、飲料類等の包装に使用される従来のゲーベルトップ型の紙容器が特許文献1に開示されている。この紙容器は紙基材層の外面に外面接着層を積層し、内面にガスバリア性を有するバリア層及び内面接着層を順に積層したブランク板を折曲して形成される。バリア層は内容物の酸化劣化や味覚低下を防止するため、アルミニウム箔、アルミニウム蒸着膜、無機酸化物蒸着膜等により形成される。   Japanese Patent Application Laid-Open No. 2004-151561 discloses a conventional paper-top type paper container used for packaging alcoholic beverages and beverages. This paper container is formed by laminating an outer surface adhesive layer on the outer surface of a paper base material layer, and bending a blank plate in which a barrier layer having gas barrier properties and an inner surface adhesive layer are sequentially laminated on the inner surface. The barrier layer is formed of an aluminum foil, an aluminum vapor deposition film, an inorganic oxide vapor deposition film, or the like in order to prevent oxidative deterioration and taste reduction of the contents.

また、紙容器は筒状の胴部の上下面をそれぞれ頂部及び底部により塞がれ、頂部には注出口を形成する樹脂製の注出部材が取り付けられる。   Further, the upper and lower surfaces of the cylindrical body portion of the paper container are closed by the top portion and the bottom portion, respectively, and a resin pouring member forming a spout is attached to the top portion.

近年、環境問題の高まりから使用後の空容器の廃棄に際し、空容器を解体して構成部材の種類毎の分別や減容化を行なってリサイクルされるようになっている。上記紙容器は、胴部のブランク板を重ね合わせて熱接着されるサイドシール部に易剥離性のテープ状フィルムを介在させてプルタブが形成されている。プルタブを引っ張り、サイドシール部の一部を剥離してこれをきっかけに強固に熱接着されたサイドシール部を剥離することで、紙容器の解体が容易となる。   In recent years, due to increasing environmental problems, when empty containers after use are discarded, the empty containers are dismantled and sorted for each type of component or reduced in volume to be recycled. In the paper container, a pull tab is formed by interposing an easily peelable tape-like film on a side seal portion that is heat-bonded by overlapping blank plates of the body portion. By pulling the pull tab, a part of the side seal part is peeled off, and the side seal part strongly heat-bonded is peeled off as a trigger, whereby the paper container can be easily disassembled.

特許第3843510号公報Japanese Patent No. 3844310

しかしながら、上記従来の紙容器によると、易剥離性のテープ状フィルムを設けるため紙容器の部品点数が増加して製造コストが増加する問題があった。また、胴部のサイドシール部にテープ状フィルムを介在させるためにシール強度が低下して密封性が低下する問題があった。   However, according to the conventional paper container, since the easily peelable tape-like film is provided, there is a problem that the number of parts of the paper container increases and the manufacturing cost increases. Further, since the tape-like film is interposed in the side seal portion of the trunk portion, there is a problem that the sealing strength is lowered and the sealing performance is lowered.

本発明は、上記問題点を解決するためになされたものであり、製造コストの増加を抑制しながら密封性の低下を抑え、使用後に容易に解体できる紙容器を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a paper container that can be easily disassembled after use while suppressing a decrease in sealing performance while suppressing an increase in manufacturing cost.

本発明は、上記課題を達成するために、請求項1に記載の本発明は、外面側から順に、熱可塑性を有する外面接着層、紙製の紙基材層、ガスバリア性を有するバリア層をバリア基材層の一面に配した中間層、熱可塑性を有する内面接着層を積層したブランク板から構成され、断面矩形の筒状の胴部と、前記胴部の天面を塞ぐ頂部と、前記胴部の底面を塞ぐ底部とを備えたゲーベルトップ型の紙容器であって、
前記胴部の上部に略水平方向に延びる切断予定部を設け、前記切断予定部が前記中間層の内端面と前記紙基材層の厚さ方向の中間とを両端とする多数の傷で構成されることを特徴とする紙容器である。
In order to achieve the above object, the present invention according to claim 1 includes, in order from the outer surface side, an outer surface adhesive layer having thermoplasticity, a paper base layer made of paper, and a barrier layer having gas barrier properties. An intermediate layer disposed on one surface of the barrier base material layer, a blank plate formed by laminating an inner surface adhesive layer having thermoplasticity, a cylindrical barrel portion having a rectangular cross section, and a top portion blocking the top surface of the barrel portion, A gobel top-type paper container having a bottom portion for closing the bottom surface of the trunk portion,
The upper portion of the body portion is provided with a planned cutting portion extending in a substantially horizontal direction, and the planned cutting portion is constituted by a large number of scratches having both ends of the inner end surface of the intermediate layer and the middle in the thickness direction of the paper base material layer. It is a paper container characterized by being made.

また本発明は上記構成の紙容器において、前記切断予定部が前記胴部の全周に延びることが好ましい。     According to the present invention, in the paper container having the above-described configuration, it is preferable that the planned cutting portion extends all around the body portion.

また本発明は上記構成の紙容器において、前記傷が帯状に並んでいることが好ましい。   According to the present invention, in the paper container configured as described above, the scratches are preferably arranged in a band shape.

また本発明は上記構成の紙容器において、前記バリア基材層がポリエチレンテレフタレートから成ることが好ましい。   According to the present invention, in the paper container configured as described above, the barrier base material layer is preferably made of polyethylene terephthalate.

また本発明は上記構成の紙容器において、液体の注入口を開口した樹脂製の注出部材が前記頂部に設けられることが好ましい。   In the paper container having the above structure according to the present invention, it is preferable that a resin pouring member having an opening for liquid injection is provided at the top.

また本発明は上記構成の紙容器において、前記胴部が対向する前面板と背面板の両側端を左右一対の側面板により連結して形成され、前記頂部の側面が前記側面板の上方に連設される天井側面板で形成され、前記側面板の中央部に前記胴部を折り畳むための胴部折線が形成され、前記天井側面板の中央部に前記頂部を折り畳むための頂部折線が設けられていることが好ましい。   According to the present invention, in the paper container having the above-described configuration, the front plate and the back plate opposed to each other are connected to each other by a pair of left and right side plates, and the side surface of the top portion is connected to the upper side of the side plate. A body folding line for folding the trunk is formed at the center of the side panel, and a top folding line for folding the top is provided at the center of the ceiling side panel. It is preferable.

本発明によると、中間層の内端面と紙基材層の厚さ方向の中間とを両端とする多数の傷により胴部を容易に切断することができ、使用後の紙容器を容易に解体することができる。また、新たな部材を設けることなく切断予定部を形成することができるので、製造コストの増加を抑制することができる。また、熱接着樹脂層には傷の端面は到達していないため、熱接着部分のシール性が低下するのを防止して紙容器内部の密封性が低下するのを抑制することができる。したがって、製造コストの増加を抑制しながら密封性の低下を抑え、使用後に容易に解体できる紙容器を提供することができる。   According to the present invention, the body portion can be easily cut by a large number of scratches having both the inner end surface of the intermediate layer and the middle in the thickness direction of the paper base material layer, and the used paper container can be easily disassembled. can do. Moreover, since the planned cutting portion can be formed without providing a new member, an increase in manufacturing cost can be suppressed. Moreover, since the end surface of the flaw has not reached the thermal bonding resin layer, it is possible to prevent the sealing performance of the thermal bonding portion from being lowered and to prevent the sealing performance inside the paper container from being lowered. Therefore, it is possible to provide a paper container that can be easily disassembled after use while suppressing a decrease in sealing performance while suppressing an increase in manufacturing cost.

本発明の実施形態の紙容器を正面側から示す斜視図である。It is a perspective view which shows the paper container of embodiment of this invention from the front side. 本発明の実施形態の紙容器を背面側から示す斜視図である。It is a perspective view which shows the paper container of embodiment of this invention from the back side. 本発明の実施形態の紙容器のブランク板を示す展開図である。It is an expanded view which shows the blank board of the paper container of embodiment of this invention. 本発明の実施形態の紙容器の切断予定部の一部を拡大して示す平面図である。It is a top view which expands and shows a part of cutting plan part of the paper container of embodiment of this invention. 本発明の実施形態の紙容器の積層体の層構成を示す断面図である。It is sectional drawing which shows the layer structure of the laminated body of the paper container of embodiment of this invention. 本発明の実施形態の紙容器の解体手順を示す説明図である。It is explanatory drawing which shows the disassembly procedure of the paper container of embodiment of this invention. 本発明の実施形態の紙容器の解体手順を示す説明図である。It is explanatory drawing which shows the disassembly procedure of the paper container of embodiment of this invention.

以下に図面を参照して本発明の実施形態を説明する。図1、図2は紙容器Aを正面側及び背面側から示す斜視図である。紙容器Aはゲーベルトップ型容器であり、ブランク板B(図4参照)を箱形状に折曲して形成される。紙容器Aには食品(酒、ドレッシング、調味料、ジュース等)や衛生用品(シャンプー、リンス等)等の液状の内容物が充填される。   Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are perspective views showing the paper container A from the front side and the back side. The paper container A is a govel top type container, and is formed by bending a blank plate B (see FIG. 4) into a box shape. The paper container A is filled with liquid contents such as food (alcohol, dressing, seasoning, juice, etc.) and sanitary goods (shampoo, rinse, etc.).

紙容器Aは胴部10と頂部20と底部30とから成る。胴部10は四側面からなる筒状体であり、頂部20は胴部10の上端を閉塞し、底部30は胴部10の下端を閉塞する。   The paper container A includes a body portion 10, a top portion 20, and a bottom portion 30. The body 10 is a cylindrical body having four side surfaces, the top 20 closes the upper end of the body 10, and the bottom 30 closes the lower end of the body 10.

胴部10は対向する前面板13と背面板11の両側端を左右一対の側面板12、14により連結した水平断面矩形に形成される。背面板11、側面板12、前面板13及び側面板14は水平方向に順に連設され、胴部10の周面を形成する周面板を構成する。   The body 10 is formed in a rectangular horizontal cross section in which both side ends of the front plate 13 and the back plate 11 facing each other are connected by a pair of left and right side plates 12 and 14. The back plate 11, the side plate 12, the front plate 13, and the side plate 14 are connected in order in the horizontal direction, and constitute a peripheral plate that forms the peripheral surface of the trunk portion 10.

頂部20は傾斜して対向する天井前面板23と天井背面板21の両側端を左右一対の天井側面板22、24により連結して形成される。天井前面板23は前面板13の上方に連設され、後方に傾斜する。天井背面板21は背面板11の上方に連設され、前方に傾斜する。天井側面板22及び天井側面板24はそれぞれ側面板12及び側面板14の上方に連設される。天井側面板22及び天井側面板24の上端部は谷折りにより二つ折りされ、傾斜した天井前面板23の上端部と天井背面板21の上端部との間に配される。   The top portion 20 is formed by connecting the opposite ends of the ceiling front plate 23 and the ceiling back plate 21 which are inclined and opposed to each other by a pair of left and right ceiling side plates 22 and 24. The ceiling front plate 23 is provided above the front plate 13 and is inclined rearward. The ceiling back plate 21 is provided continuously above the back plate 11 and is inclined forward. The ceiling side plate 22 and the ceiling side plate 24 are continuously provided above the side plate 12 and the side plate 14, respectively. The upper end portions of the ceiling side plate 22 and the ceiling side plate 24 are folded in two by valley folding, and are arranged between the upper end portion of the inclined ceiling front plate 23 and the upper end portion of the ceiling back plate 21.

天井前面板23及び天井背面板21は天井側面板22、24よりも上方に突出する。天井前面板23及び天井背面板21の上端部は熱接着され、頂部熱接着部27が形成される。天井前面板23には注出口となる樹脂成形品から成る注出部材26が取り付けられている。注出部材26は樹脂製のキャップ26aにより開閉される。   The ceiling front plate 23 and the ceiling rear plate 21 protrude above the ceiling side plates 22 and 24. The top ends of the ceiling front plate 23 and the ceiling back plate 21 are thermally bonded to form a top thermal bonding portion 27. A pouring member 26 made of a resin molded product serving as a pouring outlet is attached to the ceiling front plate 23. The dispensing member 26 is opened and closed by a resin cap 26a.

胴部10の上部には帯状の切断予定部Eが設けられている。切断予定部Eは胴部10の略水平方向に全周に亘って延びている。   A band-shaped cutting scheduled portion E is provided on the upper portion of the body portion 10. The planned cutting portion E extends over the entire circumference in the substantially horizontal direction of the body portion 10.

側面板12及び側面板14の水平方向の中央部には上下方向に延びて下端部で傾斜する胴部折線10aがそれぞれ形成されている。また。天井側面板22、24の水平方向の中央部には上下方向に延びる頂部折線20aがそれぞれ形成されている。胴部折線10a及び頂部折線20aを形成することにより、使用後の空の紙容器Aの折り畳み操作が容易となる。   A body folding line 10a extending in the vertical direction and inclined at the lower end is formed at the horizontal center of the side plate 12 and the side plate 14, respectively. Also. A top fold line 20a extending in the up-down direction is formed at the center in the horizontal direction of the ceiling side plates 22, 24, respectively. By forming the trunk fold line 10a and the top fold line 20a, the folding operation of the empty paper container A after use becomes easy.

図3は紙容器Aのブランク板Bを示す展開図である。紙容器1を展開したブランク板Bは所定位置に折り線90が設けられ、矩形の背面板11、側面板12、前面板13、側面板14、糊代片15が一方向に順に連設される。   FIG. 3 is a development view showing the blank plate B of the paper container A. FIG. The blank plate B on which the paper container 1 is unfolded is provided with a fold line 90 at a predetermined position, and a rectangular back plate 11, side plate 12, front plate 13, side plate 14 and adhesive margin piece 15 are successively arranged in one direction. The

背面板11の上端には天井背面板21が連設され、下端には底面板31が連設される。側面板12の上端には天井側面板22が連設され、下端には底面板32が連設される。前面板13の上端には天井前面板23が連設され、下端には底面板33が連設される。側面板14の上端には天井側面板24が連設され、下端には底面板34が連設される。糊代片15の上端には糊代片25が連設され、下端には糊代片35が連設される。天井前面板23には注出部材26(図1参照)を取り付ける挿通孔23aが設けられる。   A ceiling back plate 21 is connected to the upper end of the back plate 11, and a bottom plate 31 is connected to the lower end. A ceiling side plate 22 is connected to the upper end of the side plate 12, and a bottom plate 32 is connected to the lower end. A ceiling front plate 23 is connected to the upper end of the front plate 13, and a bottom plate 33 is connected to the lower end. A ceiling side plate 24 is connected to the upper end of the side plate 14, and a bottom plate 34 is connected to the lower end. An adhesive margin piece 25 is provided continuously at the upper end of the adhesive margin piece 15, and an adhesive margin piece 35 is provided continuously at the lower end. The ceiling front plate 23 is provided with an insertion hole 23a for attaching the extraction member 26 (see FIG. 1).

天井側面板22、24の中央部には縦方向に延びる頂部折線20aがそれぞれ形成され、頂部折線20aの上部から斜め下に向かって二方向に延びる折り線90が形成されている。天井側面板22、24は斜めの折り線90で折り込まれて上端部が二つ折りされる。このとき、折り込まれて対向する天井側面板22及び天井側面板24の外層同士を熱接着する。また、天井側面板22及び天井側面板24の上端部と、天井前面板23の上端部とが対向する内層同士で熱接着する。同様に、天井側面板22及び天井側面板24の上端部と、天井背面板21の上端部とが対向する内層同士を熱接着する。これにより、頂部20が形成され、胴部10の天面が塞がれる。   A top fold line 20a extending in the vertical direction is formed at the center of the ceiling side plates 22 and 24, and a fold line 90 extending in two directions obliquely downward from the top of the top fold line 20a is formed. The ceiling side plates 22 and 24 are folded at an oblique folding line 90 and the upper end portion is folded in two. At this time, the outer layers of the ceiling side plate 22 and the ceiling side plate 24 that are folded and face each other are thermally bonded. In addition, the upper end portions of the ceiling side plate 22 and the ceiling side plate 24 and the upper end portion of the ceiling front plate 23 are thermally bonded to each other. Similarly, the inner layers in which the upper end portions of the ceiling side plate 22 and the ceiling side plate 24 and the upper end portion of the ceiling back plate 21 face each other are thermally bonded. Thereby, the top part 20 is formed and the top | upper surface of the trunk | drum 10 is closed.

側面板12及び側面板14の中央部には胴部折線10aがそれぞれ形成され、胴部折線10aは縦方向に延びる直線と、直線の下部から斜め下に向かって二方向に分離した斜線とからなる。側面板12に形成された斜線の一方は底面板32の上辺の底面板31側の端部に向かい、斜線の他方は底面板32の上辺の底面板33側の端部に向かい延びている。   A body fold line 10a is formed at the center of each of the side plate 12 and the side plate 14, and the body fold line 10a is composed of a straight line extending in the vertical direction and a diagonal line separated in two directions obliquely downward from the lower part of the straight line. Become. One of the diagonal lines formed on the side plate 12 is directed to the end of the upper side of the bottom plate 32 on the side of the bottom plate 31, and the other of the diagonal lines extends to the end of the upper side of the bottom plate 32 on the side of the bottom plate 33.

同様に側面板14に形成された胴部折線10aの斜線の一方は底面板34の上辺の底面板33側の端部に向かい、斜線の他方は底面板34の上辺の糊代片15側の端部に向かい延びている。   Similarly, one of the oblique lines of the body folding line 10a formed on the side plate 14 is directed to the end of the upper side of the bottom plate 34 on the side of the bottom plate 33, and the other of the oblique lines is on the side of the adhesive margin 15 on the upper side of the bottom plate 34. It extends toward the end.

なお、頂部折線20a及び胴部折線10aは、側面板12と天井側面板22との境界の折り線90及び側面板14と天井側面板24との境界の折り線90に対して少し間隔をあけた状態で形成することが好ましい。間隔を設けることにより紙容器Aの変形を防止することができる。   The top fold line 20a and the trunk fold line 10a are slightly spaced from the fold line 90 at the boundary between the side plate 12 and the ceiling side plate 22 and the fold line 90 at the boundary between the side plate 14 and the ceiling side plate 24. It is preferable to form in the state. By providing the interval, the deformation of the paper container A can be prevented.

同様の理由で胴部折線10aの下方の斜線も側面板12と底面板32との境界の折り線90及び側面板14と底面板32との境界の折り線90に対して少し間隔をあけた状態で形成することが好ましい。   For the same reason, the diagonal line below the body folding line 10a is also slightly spaced from the fold line 90 at the boundary between the side plate 12 and the bottom plate 32 and the fold line 90 at the boundary between the side plate 14 and the bottom plate 32. It is preferable to form in a state.

ブランク板Bは後述する積層体Cを押罫と切刃を備えた抜き型で打ち抜き作製される。折り線90、胴部折線10a及び頂部折線20aは積層体Cを打ち抜く際、押罫により同時に形成される。   The blank plate B is produced by punching a laminated body C, which will be described later, with a punching die having a ruled line and a cutting blade. The fold line 90, the body fold line 10a, and the top fold line 20a are simultaneously formed by stamping when the laminate C is punched out.

胴部10の上部には背面板11、側面板12、前面板13、側面板14、糊代片15に跨って左右方向に延びる帯状の切断予定部Eが設けられる。切断予定部Eは5mm以上20mm以下の幅(上下方向の幅)で形成されることが好ましい。切断予定部Eを20mmより大きい幅で形成した場合、紙容器A内部の密封性が低下する虞がある。また、切断予定部Eを5mmより小さい幅で形成した場合、後述する解体方法によって切断予定部Eに沿って紙容器Aを切断し難くなる。   An upper portion of the body portion 10 is provided with a strip-shaped cutting portion E that extends in the left-right direction across the back plate 11, the side plate 12, the front plate 13, the side plate 14, and the adhesive margin piece 15. The planned cutting portion E is preferably formed with a width of 5 mm or more and 20 mm or less (width in the vertical direction). When the planned cutting part E is formed with a width larger than 20 mm, the sealing performance inside the paper container A may be lowered. Further, when the planned cutting portion E is formed with a width smaller than 5 mm, it is difficult to cut the paper container A along the planned cutting portion E by a disassembly method described later.

また、切断予定部Eは胴部10と頂部20との境界位置、すなわち、背面板11と頂部形成板21、側面板12と頂部形成板22、前面板13と頂部形成板23、側面板14と頂部形成板24を連接する折り線90から下方に0mm以上50mm以下の位置に配することが好ましく、15mm以上35mm以下離して配することがより好ましい。50mmより大きく離して配した場合、紙容器Aを立てた状態において内容物が切断予定部Eと接する虞がある。   Further, the planned cutting portion E is a boundary position between the body portion 10 and the top portion 20, that is, the back plate 11 and the top forming plate 21, the side plate 12 and the top forming plate 22, the front plate 13 and the top forming plate 23, and the side plate 14. And the top forming plate 24 are preferably arranged at a position of 0 mm or more and 50 mm or less downward from the fold line 90 connecting them, more preferably 15 mm or more and 35 mm or less. If the paper container A is placed at a distance greater than 50 mm, the contents may come into contact with the scheduled cutting portion E in a state where the paper container A is erected.

ブランク板Bは折り線90で折曲して糊代片15、糊代片25及び糊代片35で熱接着することにより、筒状に形成される。即ち、一端の側面板14に連設される糊代片15が他端の背面板11に熱接着されることによって、周方向に閉じた状態の筒状の胴部10が形成される。一端の底面板34に連設される糊代片35が他端の底面板31に熱接着されることによって、底部30が下端を開放して周方向に閉じた状態に形成される。一端の天井側面板24に連設される糊代片25が他端の天井背面板21に熱接着されることによって、頂部20が上端を開放して周方向に閉じた状態に形成される。   The blank plate B is formed into a cylindrical shape by being bent at a fold line 90 and thermally bonded with the paste margin piece 15, the adhesive margin piece 25 and the adhesive margin piece 35. That is, the glue piece 15 connected to the side plate 14 at one end is thermally bonded to the back plate 11 at the other end, so that the cylindrical body portion 10 in the closed state in the circumferential direction is formed. The adhesive margin piece 35 connected to the bottom plate 34 at one end is thermally bonded to the bottom plate 31 at the other end, so that the bottom 30 is formed in a closed state in the circumferential direction with the lower end opened. The adhesive margin piece 25 connected to the ceiling side plate 24 at one end is thermally bonded to the ceiling back plate 21 at the other end, so that the top portion 20 is formed in a state where the upper end is opened and closed in the circumferential direction.

底部30は各底面板31〜34を折り線90で折り畳み、熱接着により胴部10の底面を塞いだ状態で固着される。   The bottom 30 is fixed in a state in which the bottom plates 31 to 34 are folded at a fold line 90 and the bottom of the body 10 is closed by thermal bonding.

天井前面板23、天井背面板21、天井側面板22及び天井側面板24を折り線90で折曲し、頂部接着部27を熱接着することにより頂部20は胴部10の天面を塞いだ状態で固着される。このとき、頂部接着部27において、内面は後述する内面接着層6同士が相互に対向して強固に熱接着されているので手で開封することが困難な状態となっている。   The top 20 closes the top surface of the body 10 by bending the ceiling front plate 23, the ceiling back plate 21, the ceiling side plate 22 and the ceiling side plate 24 at the folding line 90 and thermally bonding the top bonding portion 27. It is fixed in a state. At this time, the inner surface of the top adhesive portion 27 is difficult to open by hand because inner surface adhesive layers 6 described later are firmly heat-bonded to each other.

また、天井側面板22及び天井側面板24の上端部は二つ折りして外面が熱接着される。なお、注出部材26は内容物が充填される前の段階で挿通孔23aに挿入されて挿通孔23aの周囲に熱接着して取り付けられる。   Further, the upper end portions of the ceiling side plate 22 and the ceiling side plate 24 are folded in two and the outer surfaces are thermally bonded. In addition, the pouring member 26 is inserted into the insertion hole 23a before being filled with the contents, and is attached by thermal bonding around the insertion hole 23a.

図4は紙容器Aの切断予定部Eの一部を拡大して示す平面図であり、図5は積層体Cの層構成を示す断面図である。切断予定部Eは胴部10を構成する積層体Cに所定間隔で刻設された多数の傷Dにより構成される。傷Dは微細な突き刺し孔であり、帯状に整列して傷痕群領域を形成している。   4 is an enlarged plan view showing a part of the planned cutting portion E of the paper container A, and FIG. 5 is a cross-sectional view showing the layer structure of the laminate C. The planned cutting portion E is constituted by a large number of scratches D engraved in the laminated body C constituting the body portion 10 at predetermined intervals. The wound D is a fine puncture hole, and is arranged in a band shape to form a scar group region.

積層体Cは熱可塑性を有する外面接着層1、紙基材層2、中間層4、熱可塑性を有する内面接着層6が順に積層されており、中間層4と紙基材層2とは層間接着層3を介して接着されている。また、中間層4と内面接着層6とは層間接着層5を介して接着されている。また、中間層4はバリア基材層4aの一面にガスバリア性を有するバリア層4bを配して形成される。   In the laminate C, an outer surface adhesive layer 1 having thermoplasticity, a paper base material layer 2, an intermediate layer 4, and an inner surface adhesive layer 6 having thermoplasticity are sequentially laminated, and the intermediate layer 4 and the paper base material layer 2 are interlayered. Bonded via the adhesive layer 3. Further, the intermediate layer 4 and the inner surface adhesive layer 6 are bonded via an interlayer adhesive layer 5. The intermediate layer 4 is formed by disposing a barrier layer 4b having gas barrier properties on one surface of the barrier base material layer 4a.

傷Dは中間層4の内端面と紙基材層2の厚さ方向の中間とを両端とし、中間層4を貫通している。これにより、切断予定部Eは切断予定部Eの非形成領域と比較して切断し易くなっている。傷Dは所定の傷痕群の切刃を備えた傷痕群形成ロールを用いて中間層4に傷加工を施すことにより刻設される。   The scratch D penetrates the intermediate layer 4 with the inner end face of the intermediate layer 4 and the middle of the paper base material layer 2 in the thickness direction as both ends. As a result, the planned cutting portion E is easier to cut than the non-formed region of the planned cutting portion E. The scratch D is formed by scratching the intermediate layer 4 using a scar group forming roll provided with a predetermined scar group.

なお、傷Dは中間層4を貫通していれば紙基材層2に到達していなくても積層体Cは一定の易切断性を有する。   Note that if the scratch D penetrates the intermediate layer 4, the laminate C has a certain ease of cutting even if it does not reach the paper base layer 2.

積層体Cは傷Dが形成された中間層4の内端面に層間接着層5を介して内面接着層6を積層する。これにより、内容物が内面接着層6により遮られるため、傷Dを介して紙基材層2側に内容物が浸透するのを防止することができる。   In the laminate C, an inner surface adhesive layer 6 is laminated on an inner end surface of the intermediate layer 4 on which the scratch D is formed, with an interlayer adhesive layer 5 interposed therebetween. Thereby, since the content is interrupted by the inner surface adhesive layer 6, it is possible to prevent the content from penetrating the paper base material layer 2 side through the scratch D.

紙基材層2は紙基材としては250〜450g/m2 の坪量の板紙が使用される。紙基材層2の外面には外面接着層1が積層されている。外面接着層1は低密度ポリエチレンや直鎖状低密度ポリエチレン等の熱可塑性を有して熱接着可能な樹脂が使用され、押出しラミネーション法により紙基材層2の上に積層される。外面接着層1の外面側には印刷層28が設けられている。 The paper base material layer 2 is a paper board having a basis weight of 250 to 450 g / m 2 as a paper base material. An outer surface adhesive layer 1 is laminated on the outer surface of the paper base material layer 2. The outer surface adhesive layer 1 is made of a thermoplastic resin such as low density polyethylene or linear low density polyethylene that can be thermally bonded, and is laminated on the paper substrate layer 2 by an extrusion lamination method. A printed layer 28 is provided on the outer surface side of the outer surface adhesive layer 1.

層間接着層3は、低密度ポリエチレン、直鎖状低密度ポリエチレン、エチレン−αオレフイン共重合体、アイオノマー、エチレン−アクリル酸共重合体、エチレン−メタクリル酸共重合体、エチレン−アクリル酸エステル共重合体、エチレン−メタクリル酸エステル共重合体等のポリオレフィン系樹脂が用いられ、押出しラミネーション法により層間接着層3の両面に紙基材層2と中間層4を積層する。層間接着層3の厚さは、通常、10〜50μmである。   The interlayer adhesive layer 3 is composed of low density polyethylene, linear low density polyethylene, ethylene-α olefin copolymer, ionomer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-acrylic acid ester copolymer. A polyolefin-based resin such as coalescence or ethylene-methacrylate copolymer is used, and the paper base layer 2 and the intermediate layer 4 are laminated on both surfaces of the interlayer adhesive layer 3 by an extrusion lamination method. The thickness of the interlayer adhesive layer 3 is usually 10 to 50 μm.

中間層4のバリア基材層4aには蒸着加工適性やラミネーション加工適性の観点から加工適性の優れた二軸延伸されたポリエステルフィルム、ナイロンフィルム、ポリプロピレンフィルム等が用いられる。バリア基材層4aの厚さは通常、4〜40μmであり、好ましくは9〜25μmである。   For the barrier base material layer 4a of the intermediate layer 4, a biaxially stretched polyester film, nylon film, polypropylene film or the like having excellent processability is used from the viewpoints of vapor deposition processability and lamination processability. The thickness of the barrier base material layer 4a is usually 4 to 40 μm, preferably 9 to 25 μm.

バリア層4bはバリア基材層4aの上面に形成されるアルミニウム等の金属の蒸着膜や、酸化アルミニウム、酸化珪素等の無機酸化物の蒸着膜、アルミニウム等の金属箔等により形成され、防湿性、ガスバリア性を備える。これにより、紙容器Aに充填される内容物の酸化劣化、味覚低下等を防止し化学的に保護する。なお、バリア層4bはバリア基材層4aに対して紙基材層2側に積層しているが、内面接着層6側に積層してもよい。   The barrier layer 4b is formed of a vapor-deposited film of metal such as aluminum formed on the upper surface of the barrier base material layer 4a, a vapor-deposited film of inorganic oxide such as aluminum oxide or silicon oxide, a metal foil of aluminum or the like, and is moisture-proof. It has gas barrier properties. As a result, the contents filled in the paper container A are chemically protected by preventing oxidative deterioration, taste reduction, and the like. In addition, although the barrier layer 4b is laminated | stacked on the paper base material layer 2 side with respect to the barrier base material layer 4a, you may laminate | stack on the inner surface adhesive layer 6 side.

また、バリア層4bにアルミニウム等の金属箔を用いてバリア基材層4aとドライラミネーション法や押出しラミネーション法で積層して中間層4を構成してもよい。この場合、金属箔は紙基材層2側に積層する方が好ましい。   Alternatively, the intermediate layer 4 may be configured by laminating the barrier layer 4b with a barrier base material layer 4a by a dry lamination method or an extrusion lamination method using a metal foil such as aluminum. In this case, the metal foil is preferably laminated on the paper base material layer 2 side.

層間接着層5は、層間接着層3と同じ樹脂を用いて押出しラミネーション法により中間層4と内面接着層6を積層するためのものであり、その厚さは、通常、10〜50μmである。また、層間接着層5としてポリエステルポリオール−イソシアネート系、ポリエーテルポリオール−イソシアネート系、ウレタン−イソシアネート系等の主剤と硬化剤とからなる2液タイプのドライラミネート用接着剤を用い、ドライラミネーション法により中間層4及び内面接着層6を積層することもできる。ドライラミネーション法の場合、層間接着層5の塗布量は、通常、固形分重量1〜5g/m2 である。 The interlayer adhesive layer 5 is for laminating the intermediate layer 4 and the inner surface adhesive layer 6 by the extrusion lamination method using the same resin as the interlayer adhesive layer 3, and the thickness is usually 10 to 50 μm. Further, as the interlayer adhesive layer 5, a two-component type adhesive for dry laminating composed of a main component and a curing agent such as polyester polyol-isocyanate, polyether polyol-isocyanate, and urethane-isocyanate is used. The layer 4 and the inner surface adhesive layer 6 can also be laminated. In the case of the dry lamination method, the coating amount of the interlayer adhesive layer 5 is usually a solid content weight of 1 to 5 g / m 2 .

内面接着層6は、熱可塑性を有する熱接着性樹脂が使用され、低密度ポリエチレン、中密度ポリエチレン、高密度ポリエチレン、直鎖状低密度ポリエチレン等の樹脂を用いたフィルムが使用される。特に環状ポリオレフィン樹脂等を用いた易引裂き性もしくは直線カット性を付与したフィルムを用いることが好ましい。内面接着層6の厚さは通常20〜100μmであり、層間接着層5の積層方法や内容物等の条件を加味して適宜決定される。   For the inner surface adhesive layer 6, a thermoadhesive resin having thermoplasticity is used, and a film using a resin such as low density polyethylene, medium density polyethylene, high density polyethylene, and linear low density polyethylene is used. In particular, it is preferable to use a film imparted with easy tearing property or linear cutting property using a cyclic polyolefin resin or the like. The thickness of the inner surface adhesive layer 6 is usually 20 to 100 μm, and is appropriately determined in consideration of conditions such as a method of laminating the interlayer adhesive layer 5 and contents.

図6、図7は紙容器Aの解体方法を示す説明図である。図1の状態にある紙容器Aを解体するためには、先ず、頂部20及び底部30が閉塞された状態のまま頂部折線20a及び胴部折線10aを内側に折り込んで、天井側面板22、24及び側面板12、14を谷折りにより二つ折りする。これにより、紙容器Aは図6に示すような状態に折り畳まれ、前面板13と背面板11に形成された切断予定部Eが重なる。   6 and 7 are explanatory views showing a method for disassembling the paper container A. FIG. In order to disassemble the paper container A in the state of FIG. 1, first, the top fold line 20a and the trunk fold line 10a are folded inward with the top 20 and the bottom 30 closed, and the ceiling side plates 22, 24 are folded. And the side plates 12 and 14 are folded in half by valley folding. Thereby, the paper container A is folded in a state as shown in FIG. 6, and the cutting scheduled portions E formed on the front plate 13 and the back plate 11 overlap.

なお、天井側面板22、24及び側面板12、14を二つ折にする際、胴部折線10aに沿って親指を押し当てて、内方に押し込むことにより容易に折り畳むことができる。   When the ceiling side plates 22 and 24 and the side plates 12 and 14 are folded in two, they can be easily folded by pressing the thumb along the trunk fold line 10a and pushing inward.

次に、図6の状態において、一方の手指で折り畳まれた胴部10を把持し、他方の手指で頂部20を掴み、切断予定部E上の折り線E1を回動軸として天井前面板23を前面板13に近づけるX1方向に頂部20を折り曲げる。次に、天井背面板21を背面板11に近づけるX2方向に折り曲げる。X1方向及びX2方向に交互に頂部20を折り曲げる動作を複数回繰り返す。この動作により、折り線E1に沿って折り目が形成され、折り線E1上の胴部10が破断し易い状態になる。   Next, in the state of FIG. 6, the body part 10 folded with one finger is gripped, the top part 20 is gripped with the other finger, and the ceiling front plate 23 with the fold line E1 on the planned cutting part E as the rotation axis. The top portion 20 is bent in the X1 direction to bring the front plate 13 closer to the front plate 13. Next, the ceiling back plate 21 is bent in the X2 direction to approach the back plate 11. The operation of bending the top portion 20 alternately in the X1 direction and the X2 direction is repeated a plurality of times. By this operation, a crease is formed along the fold line E1, and the body portion 10 on the fold line E1 is easily broken.

次に、図7に示すように、胴部10と頂部20とを折り線E1に沿って引き裂くことにより分離する。最後に、頂部20の注出部材26の周囲をハサミで切り取り、注出部材26を分離する。これにより、今まで解体が困難であった紙容器Aに切断予定部Eを設けたので頂部20が簡単に手で切り取ることができるようになり、使用後の空の紙容器Aの解体及び注出部材26の分別収集を容易に行うことができる。   Next, as shown in FIG. 7, the trunk | drum 10 and the top part 20 are isolate | separated by tearing along the fold line E1. Finally, the periphery of the pouring member 26 of the top portion 20 is cut off with scissors, and the pouring member 26 is separated. As a result, the cutting section E is provided in the paper container A, which has been difficult to disassemble until now, so that the top 20 can be easily cut out by hand, and the empty paper container A after use is disassembled and poured. Separate collection of the output member 26 can be performed easily.

本実施形態によると、中間層4の内端面と紙基材層2の厚さ方向の中間とを両端とする多数の傷Dにより、切断予定部Eに沿って胴部10を容易に切断することができ、紙容器Aを容易に解体することができる。また、新たな部材を設けことなく切断予定部Eを形成することができるので、製造コストの増加を抑制することができる。また、熱接着樹脂層には傷Dの端面は到達していないため、熱接着部分のシール性が低下するのを防止して紙容器A内部の密封性が低下するのを抑制することができる。したがって、製造コストの増加を抑制しながら密封性の低下を抑え、使用後に容易に解体できる紙容器Aを提供することができる。   According to the present embodiment, the body portion 10 is easily cut along the planned cutting portion E by a large number of scratches D having both ends of the inner end surface of the intermediate layer 4 and the middle in the thickness direction of the paper base material layer 2. The paper container A can be easily disassembled. Moreover, since the cutting scheduled part E can be formed without providing a new member, the increase in manufacturing cost can be suppressed. Further, since the end face of the scratch D does not reach the thermal bonding resin layer, it is possible to prevent the sealing performance of the thermal bonding portion from being lowered and to prevent the sealing performance inside the paper container A from being lowered. . Therefore, it is possible to provide a paper container A that can suppress a decrease in sealing performance while suppressing an increase in manufacturing cost and can be easily disassembled after use.

また、切断予定部Eが胴部10の全周に延びることにより、胴部10の切断がより容易になる。また、傷Dが帯状に並んでいるにより、図6の状態において、切断予定部E上に折り線E1を容易に形成することができ、紙容器Aの解体がより容易になる。また、中間層4が蒸着ポリエチレンテレフタレートから成ることにより、紙容器Aのガスバリア性が向上する。   Moreover, the cutting | disconnection plan part E extends to the perimeter of the trunk | drum 10, and the cutting | disconnection of the trunk | drum 10 becomes easier. Further, since the scratches D are arranged in a strip shape, the fold line E1 can be easily formed on the planned cutting portion E in the state of FIG. 6, and the paper container A can be easily disassembled. Moreover, the gas barrier property of the paper container A improves because the intermediate | middle layer 4 consists of vapor deposition polyethylene terephthalate.

また、胴部10の側面板12、14および側面板12、14の上方に連設される天井側面板22、24の中央部に胴部折線10a及び頂部折線20aを設けることにより、紙容器Aの頂部20及び底部30を閉塞された状態のまま天井側面板22、24及び側面板12、14を谷折りによって容易に二つ折りすることができる。これにより、紙容器Aを容易に折り畳んで紙容器Aの解体がより容易になる。   In addition, by providing a barrel fold line 10a and a top fold line 20a at the center of the side plates 12, 14 of the trunk portion 10 and the ceiling side plates 22, 24 provided above the side plates 12, 14, a paper container A is provided. The ceiling side plates 22 and 24 and the side plates 12 and 14 can be easily folded in two by valley folding while the top 20 and bottom 30 of the vehicle are closed. Thereby, the paper container A can be easily folded and the paper container A can be disassembled more easily.

その他本発明は、上記実施形態に限定されず、本発明の趣旨を逸脱しない範囲で種々の変更が可能である。例えば、上記実施形態では切断予定部Eが胴部10の全周に延びているが、一部に設けてもよい。例えば、谷折りにより2つ折りされる側面板12、14に設けることにより、ハサミでも切断し難い折り畳んだ側面板12、14の切断を容易にすることができる。   In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of this invention. For example, in the above embodiment, the planned cutting portion E extends around the entire circumference of the body portion 10, but may be provided in a part. For example, by providing the side plates 12 and 14 that are folded in two by valley folding, the folded side plates 12 and 14 that are difficult to cut even with scissors can be easily cut.

次に、本発明について、実施例を挙げてさらに詳しく説明する。   Next, the present invention will be described in more detail with reference to examples.

中間層4として片面にアルミニウム蒸着された厚さ12μmの二軸延伸ポリエチレンテレフタレートフィルムを用い、紙基材層2に板紙382g/m2 を用い、紙基材層2の一方の面と中間層4のアルミニウム蒸着面とを層間接着層3を介して接着した。層間接着層3はエチレン−メタクリル酸共重合体樹脂を用い、Tダイ押出機により溶融押出しして20μmの厚さでサンドラミネーション法により紙基材層2と中間層4とを接着した。 As the intermediate layer 4, a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm deposited on one surface of aluminum is used, and a paperboard 382 g / m 2 is used as the paper base material layer 2. One side of the paper base material layer 2 and the intermediate layer 4 are used. The aluminum vapor-deposited surface was bonded via an interlayer adhesive layer 3. The interlayer adhesive layer 3 was made of an ethylene-methacrylic acid copolymer resin, melt-extruded by a T-die extruder, and bonded to the paper base layer 2 and the intermediate layer 4 by a sand lamination method with a thickness of 20 μm.

所定の傷痕群の刃型を備えた傷痕群形成ロールで紙基材層2が接着された面の反対側の中間層4の面の所定位置に傷加工を行って傷Dを刻設し、切断予定部Eを形成した。なお、切断予定部Eの上下方向の幅は10mm幅とした。   Scratch processing is performed at a predetermined position on the surface of the intermediate layer 4 on the opposite side of the surface to which the paper base material layer 2 is bonded with a scar group forming roll having a blade group of a predetermined scar group, and a scratch D is engraved. A planned cutting portion E was formed. Note that the width in the vertical direction of the planned cutting portion E was 10 mm.

次に、中間層4の傷Dが刻設された面と内面接着層6とを層間接着層5を介して接着した。内面接着層6には厚さ40μmの直鎖状低密度ポリエチレン樹脂の無延伸フィルムを用い、層間接着層5にはエチレン−メタクリル酸共重合体樹脂を用いた。層間接着層5はTダイ押出機により溶融押出しして20μmの厚さでサンドラミネーション法により中間層4と内面接着層6とを接着した。   Next, the surface on which the scratch D of the intermediate layer 4 was engraved and the inner surface adhesive layer 6 were bonded via the interlayer adhesive layer 5. An unstretched film of a linear low density polyethylene resin having a thickness of 40 μm was used for the inner surface adhesive layer 6, and an ethylene-methacrylic acid copolymer resin was used for the interlayer adhesive layer 5. The interlayer adhesive layer 5 was melt-extruded by a T-die extruder, and the intermediate layer 4 and the inner surface adhesive layer 6 were bonded by a sand lamination method with a thickness of 20 μm.

次に、紙基材層2の他方の面に低密度ポリエチレン樹脂をTダイ押出機により溶融押出しし、厚さ25μmの外面接着層1を積層した。なお、紙基材層2の外面接着層1側の面にはアンカーコートを積層時に施し、外面接着層1の表出面には印刷適性を向上させるためコロナ処理を積層時にそれぞれ施し積層体Cを作製した。   Next, a low-density polyethylene resin was melt-extruded on the other surface of the paper base material layer 2 by a T-die extruder, and the outer surface adhesive layer 1 having a thickness of 25 μm was laminated. An anchor coat is applied to the surface of the paper base material layer 2 on the outer surface adhesive layer 1 side during lamination, and the exposed surface of the outer surface adhesive layer 1 is subjected to corona treatment at the time of lamination in order to improve printability. Produced.

その後、積層体Cを折り線90、胴部折線10a、頂部折線20aを備えた打ち抜き型で打ち抜き、図3に示すブランク板Bを作製した。このとき、切断予定部Eの位置は、胴部10と頂部20との境界の折り線90より20mm下方に配した。   Thereafter, the laminate C was punched with a punching die provided with a fold line 90, a body part fold line 10a, and a top part fold line 20a, thereby producing a blank plate B shown in FIG. At this time, the position of the planned cutting part E was 20 mm below the folding line 90 at the boundary between the body part 10 and the top part 20.

その後、製函機を用いて側面板12と前面板13の間に施されたブランク板Bの上端から下端に至る折り線90及び側面板14と糊代片15の間に施されたブランク板Bの上端から下端に至る折り線90に沿ってブランク板Bを折り曲げて糊代片15の外面と背面板11の内面とをフレームで炙り熱接着し、側面板12と前面板13の間及び側面板14と糊代片15の間で折り畳まれたスリーブ状に製函した。また、糊代片15にはスカイブ・ヘミング加工を施しブランク板Bの端面が内容物と接することがないように端面処理を施した。   Thereafter, a blank plate applied between the side plate 14 and the adhesive margin piece 15 and the folding line 90 from the upper end to the lower end of the blank plate B provided between the side plate 12 and the front plate 13 using a box making machine. The blank plate B is bent along a fold line 90 extending from the upper end to the lower end of B, and the outer surface of the adhesive margin piece 15 and the inner surface of the back plate 11 are wound and thermally bonded with a frame, and between the side plate 12 and the front plate 13 and It was boxed in a sleeve shape folded between the side plate 14 and the adhesive margin piece 15. Further, the paste piece 15 was subjected to skive and hemming so that the end surface of the blank plate B was not in contact with the contents.

そして、製函されたスリーブ状の紙容器を起函させ、注出部材26を取付孔23aに取り付け組み立てて図1に示す紙容器Aを作製した。   Then, the box-shaped sleeve-like paper container was raised, and the pouring member 26 was attached and assembled to the attachment hole 23a to produce the paper container A shown in FIG.

中間層4として厚さ12μmの二軸延伸ポリエチレンテレフタレートフィルムの片面に酸化珪素を蒸着したフィルムを用いた以外は実施例1と同じブランク板Bを用いて実施例1と同一形状の紙容器Aを作成した。   A paper container A having the same shape as in Example 1 was used by using the same blank plate B as in Example 1 except that a film having silicon oxide deposited on one side of a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm was used as the intermediate layer 4. Created.

中間層4としてバリア基材層4aに厚さ12μmの二軸延伸ポリエチレンテレフタレートフィルムを用い、バリア層4bとして厚さ7μmのアルミニウム箔を用い、ウレタン系2液硬化型ドライラミネート接着剤を用いた以外は実施例1と同じブランク板Bを用いて実施例1と同一形状の紙容器Aを作成した。なお、アルミニウム箔から成るバリア層4bはバリア基材層4aに対して層間接着層3側に配した。   Except for using a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm for the barrier base material layer 4 a as the intermediate layer 4, using an aluminum foil having a thickness of 7 μm for the barrier layer 4 b, and using a urethane-based two-component curable dry laminate adhesive Produced the paper container A of the same shape as Example 1 using the same blank board B as Example 1. FIG. The barrier layer 4b made of aluminum foil was disposed on the interlayer adhesive layer 3 side with respect to the barrier base material layer 4a.

内面接着層6に厚さ60μmの低密度ポリエチレン樹脂の無延伸フィルムを用い、層間接着層5としてウレタン系2液硬化型ドライラミネート接着剤を用いた以外は実施例1と同じブランク板Bを用いて実施例1と同一形状の紙容器Aを作成した。   The same blank plate B as in Example 1 was used except that an unstretched film of a low-density polyethylene resin having a thickness of 60 μm was used for the inner surface adhesive layer 6 and a urethane-based two-component curable dry laminate adhesive was used as the interlayer adhesive layer 5. A paper container A having the same shape as in Example 1 was prepared.

内面接着層6に厚さ60μmの低密度ポリエチレン樹脂の無延伸フィルムを用い、層間接着層5としてウレタン系2液硬化型ドライラミネート接着剤を用いた以外は実施例2と同じブランク板Bを用いて実施例2と同一形状の紙容器Aを作成した。   The same blank plate B as in Example 2 was used except that an unstretched film of low-density polyethylene resin having a thickness of 60 μm was used for the inner surface adhesive layer 6 and a urethane-based two-component curable dry laminate adhesive was used as the interlayer adhesive layer 5. Thus, a paper container A having the same shape as in Example 2 was prepared.

内面接着層6に厚さ60μmの低密度ポリエチレン樹脂の無延伸フィルムを用い、層間接着層5としてウレタン系2液硬化型ドライラミネート接着剤を用いた以外は実施例3と同じブランク板Bを用いて実施例3と同一形状の紙容器Aを作成した。   The same blank plate B as in Example 3 was used except that an unstretched film of low-density polyethylene resin having a thickness of 60 μm was used for the inner surface adhesive layer 6 and a urethane-based two-component curable dry laminate adhesive was used as the interlayer adhesive layer 5. Thus, a paper container A having the same shape as in Example 3 was prepared.

[比較例1]
中間層4に傷Dを設けなかった以外は実施例1と同じブランク板Bを用いて実施例1と同一形状の紙容器Aを作成した。
[Comparative Example 1]
A paper container A having the same shape as in Example 1 was prepared using the same blank plate B as in Example 1 except that the scratch D was not provided in the intermediate layer 4.

上記で作製した実施例1〜6、及び比較例1の紙容器について図6、図7で示した解体方法で解体性を評価したところ、実施例1〜6の紙容器については往復折り曲げ操作を数回繰り返すと手で頂部20と胴部10とに分離することができた。比較例1の紙容器では折り曲げ操作を往復20回繰り返しても分離不可能であった。   The paper containers of Examples 1 to 6 and Comparative Example 1 prepared above were evaluated for disassembly by the disassembly method shown in FIGS. 6 and 7, and the paper containers of Examples 1 to 6 were subjected to a reciprocal bending operation. When it was repeated several times, it could be separated into the top 20 and the body 10 by hand. In the paper container of Comparative Example 1, separation was not possible even when the folding operation was repeated 20 times.

A 紙容器
B ブランク板
C 積層体
D 傷
E 切断予定部
1 外面接着層
2 紙基材層
3、5 接着層
4 中間層
4a バリア基材層
4b 蒸着層
6 内面接着層
10 胴部
10a 胴部折線
11 背面板
12、14 側面板
13 前面板
15 糊代片
20 頂部
20a 頂部折線
21 天井背面板
22、24 天井側面板
23 天井前面板
23a 取付孔
26 注出部材
26a キャップ
27 頂部接着部
30 底部
31、32、33、34 底面板
A Paper container B Blank plate C Laminate D Scratch E Cut planned part 1 Outer surface adhesive layer 2 Paper base material layer 3, 5 Adhesive layer 4 Intermediate layer 4a Barrier base material layer 4b Deposition layer 6 Inner surface adhesive layer 10 Body part 10a Body part Folding line 11 Back plate 12, 14 Side plate 13 Front plate 15 Adhesive piece 20 Top 20a Top folding line 21 Ceiling back plate 22, 24 Ceiling side plate 23 Ceiling front plate 23a Mounting hole 26 Outlet member 26a Cap 27 Top bonding portion 30 Bottom 31, 32, 33, 34 Bottom plate

Claims (6)

外面側から順に、熱可塑性を有する外面接着層、紙製の紙基材層、ガスバリア性を有するバリア層をバリア基材層の一面に配した中間層、熱可塑性を有する内面接着層を積層したブランク板から構成され、断面矩形の筒状の胴部と、前記胴部の天面を塞ぐ頂部と、前記胴部の底面を塞ぐ底部とを備えたゲーベルトップ型の紙容器であって、
前記胴部の上部に略水平方向に延びる切断予定部を設け、前記切断予定部が前記中間層の内端面と前記紙基材層の厚さ方向の中間とを両端とする多数の傷で構成されることを特徴とする紙容器。
In order from the outer surface side, an outer surface adhesive layer having thermoplasticity, a paper-made paper base material layer, an intermediate layer in which a barrier layer having gas barrier properties is arranged on one surface of the barrier base material layer, and an inner surface adhesive layer having thermoplastic properties were laminated. A paperbelt top type paper container comprising a cylindrical barrel having a rectangular cross section, a top portion for closing the top surface of the barrel portion, and a bottom portion for closing the bottom surface of the barrel portion, comprising a blank plate,
The upper portion of the body portion is provided with a planned cutting portion extending in a substantially horizontal direction, and the planned cutting portion is constituted by a large number of scratches having both ends of the inner end surface of the intermediate layer and the middle in the thickness direction of the paper base material layer. Paper container characterized by being made.
前記切断予定部が前記胴部の全周に延びることを特徴とする請求項1に記載の紙容器。   The paper container according to claim 1, wherein the scheduled cutting portion extends all around the body portion. 前記傷が帯状に並んでいることを特徴とする請求項1又は請求項2に記載の紙容器。   The paper container according to claim 1 or 2, wherein the scratches are arranged in a strip shape. 前記バリア基材層がポリエチレンテレフタレートから成ること特徴とする請求項1〜請求項3のいずれかに記載の紙容器。   The paper container according to any one of claims 1 to 3, wherein the barrier base material layer is made of polyethylene terephthalate. 液体の注入口を開口した樹脂製の注出部材が前記頂部に設けられることを特徴とする請求項1〜請求項4のいずれかに記載の紙容器。   The paper container according to any one of claims 1 to 4, wherein a resin pouring member having an opening for liquid injection is provided at the top. 前記胴部が対向する前面板と背面板の両側端を左右一対の側面板により連結して形成され、前記頂部の側面が前記側面板の上方に連設される天井側面板で形成され、
前記側面板の中央部に前記胴部を折り畳むための胴部折線が形成され、前記天井側面板の中央部に前記頂部を折り畳むための頂部折線が設けられていることを特徴とする請求項1〜請求項5のいずれかに記載の紙容器。
The body part is formed by connecting both side ends of the front plate and the back plate opposed to each other by a pair of left and right side plates, and the side surface of the top portion is formed by a ceiling side plate provided continuously above the side plate,
The body folding line for folding the trunk is formed at the center of the side plate, and the top folding line for folding the top is provided at the center of the ceiling side plate. The paper container according to claim 5.
JP2016097470A 2016-05-13 2016-05-13 Paper container Pending JP2017202870A (en)

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JP2010001031A (en) * 2008-06-18 2010-01-07 Dainippon Printing Co Ltd Gable top paper container
JP2012086864A (en) * 2010-10-19 2012-05-10 Toppan Printing Co Ltd Paper container for liquid
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