JP2002292778A - Laminated sheet for paper container and easily dismantleable gable-top type paper container using the laminated sheet - Google Patents
Laminated sheet for paper container and easily dismantleable gable-top type paper container using the laminated sheetInfo
- Publication number
- JP2002292778A JP2002292778A JP2001095199A JP2001095199A JP2002292778A JP 2002292778 A JP2002292778 A JP 2002292778A JP 2001095199 A JP2001095199 A JP 2001095199A JP 2001095199 A JP2001095199 A JP 2001095199A JP 2002292778 A JP2002292778 A JP 2002292778A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- paper container
- laminated sheet
- vapor
- gable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
Landscapes
- Cartons (AREA)
- Laminated Bodies (AREA)
Abstract
(57)【要約】
【課題】易解体を可能にした紙容器用積層シートと該紙
容器用積層シートを用いた易解体性を有する頂部が切り
妻屋根型に成形されたゲーブルトップ型紙容器を提供す
ること。
【解決手段】板紙（１５）を基材とし、表面層（１１）
と裏面層（１２）がポリエチレンからなり、裏面層の内
側に、基材フィルム（１３ａ）に無機酸化物の蒸着層
（１３ｂ）を設けた蒸着フィルムををガスバリア層（１
３）として積層された紙容器用積層シート（１０）であ
り、ガスバリア層を形成する蒸着フィルムの蒸着層（１
３ｂ）面を、裏面層（１２）と対向させて接着剤層（１
４）を介して積層させる。
(57) Abstract: A laminated sheet for a paper container which enables easy disassembly, and a gable-top type paper container having an easily dismantled top formed into a gable roof type using the laminated sheet for a paper container. To provide. A paperboard (15) is used as a base material, and a surface layer (11) is provided.
And a back layer (12) made of polyethylene, and a vapor deposition film provided with a vapor deposition layer (13b) of an inorganic oxide on a base film (13a) inside the rear layer is placed on a gas barrier layer (1).
3) A laminated sheet for paper containers (10) laminated as (3), wherein a vapor-deposited layer (1) of a vapor-deposited film for forming a gas barrier layer.
3b) The adhesive layer (1) with the surface facing the back layer (12)
The layers are laminated through 4).
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、易解体性の紙容器
用積層シートと該積層シートを用いて作製した切り妻屋
根型の頂部を有するゲーブルトップ型紙容器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an easily dismantled laminated sheet for a paper container, and a gable-top type paper container having a gable roof type top made using the laminated sheet.
【０００２】[0002]
【従来の技術】清酒、ジュース等の液体用紙容器とし
て、容器の上部を切り妻屋根型に成形したゲーブルトッ
プ型紙容器が広く流通している。そしてこの紙容器を構
成している積層シートとして、最近アルミニウム箔の代
わりにポリエチレンテレフタレート（ＰＥＴ）フィルム
に酸化珪素、酸化アルミニウム等の薄膜を蒸着した蒸着
フィルムを用い、ＰＥＴフィルムを裏面側（接液面側）
に配置した、例えば、ポリエチレン／板紙／エチレン−
アクリル酸共重合体層／蒸着薄膜層／ＰＥＴフィルム／
接着剤層／ポリエチレン等の層構成からなるものが流通
している。2. Description of the Related Art As liquid paper containers for sake, juice and the like, gable-top paper containers in which the upper part of the container is formed into a gable roof type are widely distributed. As a laminated sheet constituting the paper container, a vapor deposition film obtained by vapor-depositing a thin film of silicon oxide, aluminum oxide, or the like on a polyethylene terephthalate (PET) film instead of aluminum foil has recently been used. Surface side)
For example, polyethylene / paperboard / ethylene-
Acrylic acid copolymer layer / deposited thin film layer / PET film /
Those having a layer structure such as an adhesive layer / polyethylene are in circulation.
【０００３】上記層構成の積層シートを用いた紙容器
は、アルミニウム箔を用いた従来の紙容器と同等の耐内
容物性を有すると共に、アルミニウム箔を使用していな
いので、使用後の容器廃棄の際も紙容器としての廃棄が
可能で、使用範囲も広まっている。A paper container using a laminated sheet having the above-mentioned layer structure has the same content resistance as a conventional paper container using aluminum foil, and does not use aluminum foil. In this case, it can be disposed of as a paper container, and the range of use is expanding.
【０００４】一方、容器包装リサイクル法（正式名称
「容器包装に係わる分別収集及び再商品化の促進等に関
する法律」）の施行に伴い、中身を取り出した後の紙容
器をリサイクルさせるために、使用後の空容器を解体す
る必要が生じてきた。On the other hand, with the enforcement of the Containers and Packaging Recycling Law (formal name, “Act on the Separation and Collection of Containers and Packaging and Promotion of Recycling”), it is necessary to recycle paper containers after removing the contents. It became necessary to dismantle the empty container later.
【０００５】そして容器の解体方法としては、一般的に
は、図５に示すように、容器頂部の切り妻屋根型部分の
トップシール部を先ず左右に引き裂くように指で外側に
押し広げ、反対側も同様に押し広げ、頂部のトップシー
ル部分を十文字状に分離する（一次開封）。[0005] As a method of dismantling the container, generally, as shown in Fig. 5, the top seal portion of the gable roof type portion at the top of the container is first pushed outward by a finger so that the top seal portion is torn to the left and right. The side is similarly pushed open, and the top seal portion at the top is separated into a cross shape (primary opening).
【０００６】次いで、十文字状になったトップシール部
分の相対向するフラップを指でしっかり掴み、対角線に
沿って外側方向へ引っ張って頂部を開口する。同様に、
反対側のフラップも同様に対角線に沿って外側方向に引
っ張り、頂部を完全に開口する（二次開封）。Next, the opposing flaps of the cross-shaped top seal portion are firmly grasped with fingers and pulled outward along a diagonal line to open the top. Similarly,
The opposite flap is likewise pulled outward along the diagonal to open the top completely (secondary opening).
【０００７】最後に胴部分と底部分とを鋏等で切り開
き、シート状に広げて口栓部分をむしり取るなり、切り
取るなりして、残ったシート状の紙容器の内面側を洗浄
し、乾燥させることでリサイクル対象として処理され
る。その際、切り取るなどした口栓部分はプラスチック
ごみとして別途リサイクル等の処分がなされる。なお、
前記紙容器の内面側の洗浄および乾燥については、上述
した場合に限らず、中身の使用後に二次開封を行った後
など、いつ行っても良い。[0007] Finally, the body and bottom are cut open with scissors or the like, spread in a sheet shape, and the plug portion is peeled off or cut off, and the inner surface side of the remaining sheet-shaped paper container is washed and dried. It is treated as a recycling target. At this time, the cut-off plug part is disposed of separately as plastic waste by recycling. In addition,
The washing and drying of the inner surface side of the paper container are not limited to the above-described case, and may be performed at any time, such as after secondary opening after using the contents.
【０００８】ところがゲーブルトップ型紙容器は、液体
を収納する際、液もれを防止する意味から完全密封して
あるため、リサイクルのために紙容器を解体しようとし
ても手では簡単には開封できない。特に、ＰＥＴフィル
ム面を裏面側（接液面側）に配置した前記層構成の紙容
器では、蒸着フィルムのＰＥＴフィルム面が裏面側（接
液面側、シーラント側）になることで、シール強度が安
定して強くコントロールすることができるが、反面、逆
に易解体のためにはマイナス要素になっている。すなわ
ち、密封シール強度としては、一次開封時が４０Ｎ／１
５ｍｍ程度で、二次開封時は７０Ｎ／１５ｍｍ程度であ
る。However, since the gable-top type paper container is completely sealed in order to prevent liquid leakage when storing the liquid, even if the paper container is to be disassembled for recycling, it cannot be easily opened by hand. In particular, in the paper container having the above-described layer configuration in which the PET film surface is disposed on the back surface side (liquid contact surface side), the PET film surface of the vapor-deposited film is on the back surface side (liquid contact surface side, sealant side), so that the sealing strength is obtained. Can be controlled stably and strongly, but on the other hand, it is a negative factor for easy dismantling. In other words, the sealing strength at the time of primary opening is 40 N / 1.
It is about 5 mm, and about 70 N / 15 mm at the time of secondary opening.
【０００９】[0009]
【発明が解決しようとする課題】本発明は、頂部を切り
妻屋根型に成形したゲーブルトップ型紙容器用の積層シ
ートと該積層シートを用いて成形したゲーブルトップ型
紙容器に関する以上のような問題点を解決するためにな
されたもので、易解体を可能にした紙容器用積層シート
と該紙容器用積層シートを用いた易解体性を有する頂部
が切り妻屋根型に成形されたゲーブルトップ型紙容器を
提供することを課題とする。SUMMARY OF THE INVENTION The present invention relates to a laminated sheet for a gable-top type paper container having a gable roof type at the top and a gable-top type paper container molded using the laminated sheet. In order to solve the above problem, a laminated sheet for a paper container that enables easy disassembly, and a gable-top type paper container in which the top having easy dismantling using the laminated sheet for a paper container is formed into a gable roof type The task is to provide
【００１０】[0010]
【課題を解決するための手段】本発明の請求項１の発明
は、板紙を基材とし、表面層と裏面層がポリエチレンか
らなり、裏面層の内側にポリエチレンテレフタレートフ
ィルムなどの基材フィルムに、酸化アルミニウム、酸化
ケイ素などの無機酸化物の蒸着層を設けた無機酸化物蒸
着フィルムあるいはアルミニウムを蒸着したアルミニウ
ム蒸着フィルムをガスバリア層として積層した紙容器用
積層シートであって、前記ガスバリア層を形成する無機
酸化物蒸着フィルムあるいはアルミニウム蒸着フィルム
の蒸着層面を、裏面層と対向させて接着剤層を介して積
層されたことを特徴とする紙容器用積層シートである。According to the first aspect of the present invention, a paperboard is used as a base material, a front layer and a back layer are made of polyethylene, and a backing film such as a polyethylene terephthalate film is provided inside the back layer. Aluminum oxide, a laminated sheet for a paper container in which an inorganic oxide vapor-deposited film provided with a vapor-deposited layer of an inorganic oxide such as silicon oxide or an aluminum vapor-deposited film obtained by vapor-depositing aluminum is laminated as a gas barrier layer, and the gas barrier layer is formed. A laminated sheet for a paper container, wherein a laminated layer surface of an inorganic oxide vapor-deposited film or an aluminum vapor-deposited film is laminated with an adhesive layer facing a back surface layer.
【００１１】このように、ガスバリア層を形成する無機
酸化物蒸着フィルムあるいはアルミニウム蒸着フィルム
の蒸着層面を、裏面層と対向させて接着剤層を介して積
層されているので、積層シートの裏面層同士を対向させ
て熱融着して剥がすと、裏面層／蒸着層の間で適度の強
度で剥がれる。[0011] As described above, since the vapor-deposited layer surface of the inorganic oxide vapor-deposited film or the aluminum vapor-deposited film forming the gas barrier layer is laminated via the adhesive layer so as to face the rear surface layer, the rear surface layers of the laminated sheet are laminated. Are peeled off by heat fusion with facing each other, with appropriate strength between the back surface layer and the vapor deposition layer.
【００１２】また、請求項２の発明は、請求項１記載の
紙容器用積層シートを用いて成形した易解体性ゲーブル
トップ型紙容器である。A second aspect of the present invention is an easily dismantleable gable-top type paper container formed using the laminated sheet for a paper container according to the first aspect.
【００１３】このように、請求項１記載の紙容器用積層
シートを用いて成形した易解体性ゲーブルトップ型紙容
器の頂部を上述の方法により解体しようとすると、積層
シートの裏面層と蒸着層の間が適度の強度で剥がれるの
で、一次開封、二次開封ともそれほど力を入れずに開封
することができる。As described above, when the top of the easily dismantleable gable-top type paper container formed by using the laminated sheet for paper container according to claim 1 is to be dismantled by the above-described method, the back layer of the laminated sheet and the vapor deposition layer are formed. Since the space is peeled off with an appropriate strength, the primary opening and the secondary opening can be opened without applying much force.
【００１４】[0014]
【発明の実施の形態】本発明の紙容器用積層シートを一
実施形態に基づいて以下に詳細に説明する。本発明の紙
容器用積層シートは、例えば図１に示すように、板紙を
基材とし、表面層（１１）と裏面層（１２）がポリエチ
レンからなり、裏面層の内側にポリエチレンテレフタレ
ートフィルムなどの基材フィルム（１３ａ）に、酸化ア
ルミニウム、酸化ケイ素などの無機酸化物の蒸着層（１
３ｂ）を設けた無機酸化物蒸着フィルムあるいはアルミ
ニウムを蒸着したアルミニウム蒸着フィルムをガスバリ
ア層（１３）として積層された紙容器用積層シート（１
０）であって、ガスバリア層（１３）を形成する無機酸
化物蒸着フィルムあるいはアルミニウム蒸着フィルムの
蒸着層（１３ｂ）面を、裏面層（１２）と対向させて接
着剤層（１４）を介して積層したものである。BEST MODE FOR CARRYING OUT THE INVENTION A laminated sheet for a paper container of the present invention will be described below in detail based on one embodiment. The laminated sheet for a paper container of the present invention is, for example, as shown in FIG. 1, a paperboard as a base material, a surface layer (11) and a back layer (12) made of polyethylene, and a polyethylene terephthalate film or the like inside the back layer. On the base film (13a), a deposited layer (1) of an inorganic oxide such as aluminum oxide and silicon oxide.
The laminated sheet for paper containers (1) in which an inorganic oxide vapor-deposited film provided with 3b) or an aluminum vapor-deposited film on which aluminum is vapor-deposited is laminated as a gas barrier layer (13).
0), the surface of the vapor-deposited layer (13b) of the inorganic oxide vapor-deposited film or the aluminum vapor-deposited film forming the gas barrier layer (13) is opposed to the back surface layer (12) via the adhesive layer (14). It is a laminate.
【００１５】表面層（１１）は、基材の板紙に耐水性を
付与するとともに、表面接着性をも付与する層で、低密
度ポリエチレンなどのポリエチレン樹脂が好適に使用で
きる。厚みは２０μｍ程度で良い。The surface layer (11) is a layer that imparts water resistance to the base paperboard and also imparts surface adhesion, and a polyethylene resin such as low-density polyethylene can be suitably used. The thickness may be about 20 μm.
【００１６】裏面層（１２）は、シーラント層となる層
で、好ましくは表面層と同一の樹脂を使用することによ
り、後記する紙容器に成形する際の成形適性が向上す
る。使用厚みは６０μｍ程度とすることが好ましい。The back surface layer (12) is a layer to be a sealant layer, and preferably by using the same resin as the surface layer, the formability in forming into a paper container described later is improved. The thickness used is preferably about 60 μm.
【００１７】ガスバリア層（１３）としては、ＰＥＴフ
ィルムなどの基材フィルム（１３ａ）に、酸化アルミニ
ウム、酸化ケイ素などの無機酸化物の蒸着層（１３ｂ）
を１００〜１０００ｎｍ程度の厚さに設けた蒸着フィル
ムが好ましく使用できる。As the gas barrier layer (13), a vapor deposition layer (13b) of an inorganic oxide such as aluminum oxide or silicon oxide is formed on a base film (13a) such as a PET film.
Can be preferably used in a thickness of about 100 to 1000 nm.
【００１８】ガスバリア層（１３）の蒸着層（１３ｂ）
と裏面層（１２）の間に設けられる接着剤層（１４）
は、ポリエステル樹脂系の二液反応型接着剤をグラビア
コート法等の公知の方法により塗布して得られる。Evaporated layer (13b) of gas barrier layer (13)
Adhesive layer (14) provided between the substrate and the back layer (12)
Can be obtained by applying a two-component reactive adhesive of a polyester resin type by a known method such as a gravure coating method.
【００１９】紙容器用積層シートは、例えば、つぎのよ
うな方法により作製することができる。先ず、あらかじ
め、基材となる坪量４００ｇ／ｍ2 程度の板紙（１５）
と、ガスバリア層（１３）である酸化ケイ素の蒸着薄膜
を蒸着層（１３ｂ）として形成させたＰＥＴフィルム
（１２μｍ厚、１３ａ）を準備する。なお、蒸着層の基
材フィルムへの密着強度が２〜１０Ｎ／１５ｍｍ幅にコ
ントロールされたものを準備する。The laminated sheet for paper containers can be produced, for example, by the following method. First, in advance, basis weight 400 g / m 2 about paperboard as the base material (15)
Then, a PET film (12 μm thick, 13a) in which a vapor-deposited thin film of silicon oxide as a gas barrier layer (13) is formed as a vapor-deposited layer (13b) is prepared. In addition, the thing whose adhesion strength of the vapor deposition layer to the base film is controlled to 2 to 10 N / 15 mm width is prepared.
【００２０】ＰＥＴフィルム（１３ａ）の蒸着層（１３
ｂ）面に二液反応型のポリエステル樹脂系接着剤を接着
剤層（１４）として塗布しながら、低密度ポリエチレン
樹脂をＴダイ押出機で厚さ６０μｍ程度にフィルム成形
（１２）すると同時にＰＥＴフィルム（１３ａ）に圧着
し貼り合わせる。The deposited layer (13) of the PET film (13a)
b) A low-density polyethylene resin is formed into a film having a thickness of about 60 μm using a T-die extruder while a two-component reaction type polyester resin adhesive is applied as an adhesive layer (14) on the surface (12), and at the same time a PET film is formed. (13a) and bonded together.
【００２１】こうしてガスバリア層（１３）と裏面層
（１２）を貼り合わせた二層構成の複合フィルムと板紙
（１５）とを中間層（１６）となる溶融したエチレン−
アクリル酸共重合体樹脂（３０μｍ程度）を介してサン
ドウイッチラミネーション法により貼り合わせ、四層構
成の複合シートを作製する。In this way, the two-layer composite film in which the gas barrier layer (13) and the back layer (12) are bonded to each other and the paperboard (15) are melted into an ethylene-
A four-layer composite sheet is prepared by laminating with an acrylic acid copolymer resin (about 30 μm) by a sandwich lamination method.
【００２２】最後に、この四層構成の複合シートの板紙
（１５）面に表面層（１１）である低密度ポリエチレン
樹脂をＴダイ押出機で厚さ２０μｍ程度に押出しラミネ
ートして、表面層（１１）／板紙（１５）／中間層（１
６）／ＰＥＴフィルム（１３ａ）／蒸着層（１３ｂ）／
接着剤層（１４）／裏面層（１２）の構成からなる紙容
器用積層シート（１０）が出来上がる。Finally, a low-density polyethylene resin, which is a surface layer (11), is extruded to a thickness of about 20 μm by a T-die extruder on the paperboard (15) surface of the four-layer composite sheet, and is laminated. 11) / paperboard (15) / intermediate layer (1
6) / PET film (13a) / Evaporation layer (13b) /
A laminated sheet (10) for a paper container having the structure of the adhesive layer (14) / the back layer (12) is completed.
【００２３】こうして作製した紙容器用積層シートか
ら、例えば、図２（ａ）に示すようなゲーブルトップ型
紙容器用のブランク（２０）に打ち抜き、このブランク
（２０）からスリーブを作製し、できたスリーブを専用
の充填シール機にセットして図３に示す切り妻屋根型の
頂部（３１）を有するゲーブルトップ型紙容器（３０）
を作製した。From the laminated sheet for a paper container thus produced, for example, a blank (20) for a gable-top type paper container as shown in FIG. 2A is punched out, and a sleeve is produced from the blank (20). A gable-top paper container (30) having a gable roof type top (31) shown in FIG. 3 by setting the sleeve in a dedicated filling and sealing machine.
Was prepared.
【００２４】なお、前記打ち抜き工程において、図２
（ｂ）に示すように、折り畳み易くするための折り畳み
罫線（ｎ）および頂部のトップシール部を十文字状に分
離（一次開封）し易くするための解体補助罫線（ｍ）を
設けることも可能である。前記解体補助罫線は、傾斜片
に設けられた口栓取り付け部近傍には設けない方が好ま
しい。また、傾斜片と外側貼着片との境界となる稜線近
傍には、前記解体補助罫線を設けても設けなくても良
い。さらに、前記折り畳み罫線を糊代片の対応する位置
に設けても良い（図示しない）。In the punching step, FIG.
As shown in (b), a folding ruled line (n) for facilitating folding and a disassembly auxiliary ruled line (m) for facilitating separation (primary opening) of the top seal portion at the top can be provided. is there. It is preferable that the disassembly assisting ruled line is not provided near the plug attaching portion provided on the inclined piece. In addition, the disassembly assisting ruled line may or may not be provided in the vicinity of a ridgeline which is a boundary between the inclined piece and the outer sticking piece. Further, the folding ruled line may be provided at a position corresponding to the adhesive margin (not shown).
【００２５】作製したゲーブルトップ型紙容器（３０）
の頂部（３１）を前述の図５に示す手順に従って開封し
たが、一次開封、二次開封ともに力をそれほど必要とせ
ずに開封でき、頂部の開封は比較的容易にできた。The prepared gable-top type paper container (30)
Was opened in accordance with the procedure shown in FIG. 5 described above. Both the primary opening and the secondary opening could be opened without much force, and the opening of the top was relatively easy.
【００２６】[0026]
【実施例】以下実施例により本発明をさらに詳細に説明
する。 〈実施例１〉先ず、上述の積層方法により、表面層（１
１、低密度ポリエチレン２０μｍ）／板紙（１５、坪量
４００ｇ／ｍ2 ）／中間層（１６、エチレン−アクリル
酸共重合体樹脂３０μｍ）／ＰＥＴフィルム（１３ａ、
１２μｍ）／酸化ケイ素蒸着層（１３ｂ）／接着剤層
（１４）／裏面層（１２、低密度ポリエチレン６０μ
ｍ）からなる実施例１の紙容器用積層シート（１０）を
作製した（図１参照）。The present invention will be described in more detail with reference to the following examples. <Example 1> First, the surface layer (1
1, low-density polyethylene 20 μm) / paperboard (15, basis weight 400 g / m 2 ) / intermediate layer (16, ethylene-acrylic acid copolymer resin 30 μm) / PET film (13a,
12 μm) / silicon oxide vapor deposited layer (13b) / adhesive layer (14) / backside layer (12, low density polyethylene 60μ)
m) to produce a laminated sheet (10) for a paper container of Example 1 (see FIG. 1).
【００２７】ここで、ガスバリア層（１３）として使用
した酸化ケイ素蒸着薄膜層が蒸着されたＰＥＴフィルム
の、蒸着薄膜層のＰＥＴフィルムへの密着強度は２Ｎ／
１５ｍｍ幅のものを使用した。また、中間層のエチレン
−アクリル酸共重合体樹脂として、ニュクレルＡＮ４２
２８Ｃ（三井・デュポンポリケミカル株式会社製）を使
用し、ガスバリア層と裏面層を貼り合わせた二層構成の
複合フィルムのＰＥＴフィルム面に出力２ｋｗのコロナ
放電処理を施しながら中間層のエチレン−アクリル酸共
重合体樹脂を３００°Ｃ以上に溶融して板紙とサンドウ
イッチラミネーション法により積層した。Here, the adhesion strength of the PET film on which the silicon oxide vapor-deposited thin film layer used as the gas barrier layer (13) was deposited to the PET film was 2N /.
The one having a width of 15 mm was used. Further, as the ethylene-acrylic acid copolymer resin of the intermediate layer, Nucrel AN42
Using 28C (manufactured by Du Pont-Mitsui Polychemicals Co., Ltd.), an ethylene-acryl of an intermediate layer is applied to a PET film surface of a two-layer composite film in which a gas barrier layer and a back surface layer are bonded to each other while performing a corona discharge treatment at an output of 2 kW. The acid copolymer resin was melted at a temperature of 300 ° C. or higher and laminated with a paperboard by a sandwich lamination method.
【００２８】〈比較例１〉ガスバリア層として用いた酸
化ケイ素蒸着薄膜層が蒸着されたＰＥＴフィルムを積層
シートに貼り合わせる際、ＰＥＴフィルム面を裏面側
（接液面側）に配置した以外は実施例１と同じ材料、方
法で下記構成の比較例１の紙容器用積層シート（１０
ａ）を作製した。すなわち、比較例１の層構成；表面層
（１１、低密度ポリエチレン２０μｍ）／板紙（１５、
坪量４００ｇ／ｍ2 ）／中間層（１６、エチレン−アク
リル酸共重合体樹脂３０μｍ）／酸化ケイ素蒸着層（１
３ｂ）／ＰＥＴフィルム（１３ａ、１２μｍ）／接着剤
層（１４）／裏面層（１２、低密度ポリエチレン６０μ
ｍ）（図４参照）。<Comparative Example 1> When bonding a PET film on which a silicon oxide vapor-deposited thin film layer used as a gas barrier layer was deposited to a laminated sheet, the procedure was performed except that the PET film face was disposed on the back side (liquid contact side). Using the same material and method as in Example 1, the laminated sheet for a paper container of Comparative Example 1 (10
a) was prepared. That is, the layer structure of Comparative Example 1; surface layer (11, low-density polyethylene 20 μm) / paperboard (15,
Basis weight 400 g / m 2 ) / intermediate layer (16, ethylene-acrylic acid copolymer resin 30 μm) / silicon oxide deposited layer (1
3b) / PET film (13a, 12 μm) / adhesive layer (14) / backside layer (12, low-density polyethylene 60μ)
m) (see FIG. 4).
【００２９】このようにして作製した実施例１種類、比
較例１種類、合計２種類の紙容器用積層シートから、図
２に示すゲーブルトップ型紙容器用のブランクを打ち抜
き、このブランクからスリーブを作製し、このスリーブ
を専用の充填シール機にセットして、図３に示すような
切り妻屋根型の頂部（３１）を有する実施例１と比較例
１のゲーブルトップ型紙容器（３０）を作製した。A blank for a gable-top type paper container shown in FIG. 2 is punched from the thus-prepared two types of laminated sheets for a paper container, one in Example and one in Comparative Example, and a sleeve is formed from the blank. Then, this sleeve was set in a dedicated filling and sealing machine, and gable-top paper containers (30) of Example 1 and Comparative Example 1 having a gable roof type top (31) as shown in FIG. 3 were produced. .
【００３０】作製した実施例１種類、比較例１種類、合
計２種類のゲーブルトップ型紙容器の頂部の一次開封と
二次開封のシール強度を下記の方法により測定、チェッ
クした。その結果を表１に示す。 一次開封のシール強度 ‥ 二枚重ね部分をインストロ
ン型引張り試験機で強度測定する（試験幅；１５ｍｍ、
引っ張り速度；３００ｍｍ／ｍｉｎ．） 二次開封のシール強度 ‥ 一次開封後のトップシール
部を一次開封同様にイインストロン型引張り試験機で強
度測定する なお、データはいずれもＰＥＴフィルムと裏面層の間の
接着強度が２Ｎ／１５ｍｍ幅の場合である。The seal strength of the first opening and the second opening of the top portion of the gable-top type paper container of two types, one in Example and one in Comparative Example, was measured and checked by the following method. Table 1 shows the results. Seal strength at primary opening 強度 Measure the strength of the two-ply portion with an Instron tensile tester (test width: 15 mm,
Pulling speed: 300 mm / min. ) Secondary opening seal strength 強度 Measure the strength of the top seal after primary opening with an Instron-type tensile tester in the same manner as the primary opening. Note that all data show that the adhesive strength between the PET film and the back surface layer is 2N / 15 mm. This is the case for width.
【００３１】[0031]
【表１】 [Table 1]
【００３２】表１の結果から、蒸着フィルムを貼り合わ
せる際に、裏面側（接液面側）に基材フィルムであるＰ
ＥＴフィルムを配置するよりも、蒸着薄膜層側を配置し
た方が、ゲーブルトップ型紙容器の頂部の開口時の開封
強度が弱められることが分かる。開封時の強度は、蒸着
薄膜層の基材フィルムとの密着強度をコントロールする
ことによりさらに弱くすることも可能になる。From the results shown in Table 1, when the vapor-deposited film is bonded, the base film P
It can be seen that the opening strength at the time of opening the top of the gable-top type paper container is weaker when the evaporated thin film layer side is arranged than when the ET film is arranged. The strength at the time of opening can be further reduced by controlling the adhesion strength of the deposited thin film layer to the base film.
【００３３】[0033]
【発明の効果】上記のように、本発明の紙容器用積層シ
ートを使用したゲーブルトップ型紙容器は、リサイクル
が簡単になる。ガスバリアフィルムを貼り合わせる際、
蒸着層の面を接液面側にすることでサンドウイッチラミ
ネーションをコロナ放電処理で直接貼れる樹脂を採用す
ることにより工程の短縮を図ることができる。As described above, the gable-top type paper container using the laminated sheet for paper container of the present invention can be easily recycled. When attaching a gas barrier film,
The process can be shortened by adopting a resin in which the sandwich lamination can be directly applied by corona discharge treatment by setting the surface of the vapor deposition layer to the liquid contact surface side.
【００３４】また、側板上部又は屋根板に解体補助罫線
を設けることにより、特に切り妻屋根型部分を引き裂く
ように外側に押し広げて十文字状に分離する一次開封に
おいて、解体補助罫線に沿って稜線部分を内方に押し込
むようにすることで、切り妻屋根型部分を押し広げる際
に、手や指を入れるスペースを大きく確保することがで
きるため、押し広げるために加えた力が十分に伝わり開
封作業がし易くなる。In addition, by providing an auxiliary disassembly ruled line on the upper side plate or on the roof panel, the ridge line is provided along the auxiliary disassembly ruled line in the primary opening in which the gable roof-shaped portion is spread outward so as to tear and separated into a cross shape. By pushing the part inward, it is possible to secure a large space for hands and fingers when expanding the gable roof type part, so the force applied to spread it is transmitted sufficiently and opened. Work becomes easier.
【図１】本発明の紙容器用積層シートの層構成の一実施
例を示す断面説明図である。FIG. 1 is an explanatory cross-sectional view showing one embodiment of a layer configuration of a laminated sheet for a paper container of the present invention.
【図２】本発明の紙容器用積層シートを打ち抜いた紙容
器用ブランクの、（ａ）は一実施例を示す展開平面図で
あり、（ｂ）は別の実施例を示す展開説明図である。2 (a) is a developed plan view showing one embodiment of a paper container blank punched out of the laminated sheet for paper container of the present invention, and FIG. 2 (b) is a developed explanatory diagram showing another embodiment. is there.
【図３】本発明の紙容器用積層シートを用いて作製した
ゲーブルトップ型紙容器の一実施例を示す斜視説明図で
ある。FIG. 3 is a perspective explanatory view showing one embodiment of a gable-top type paper container manufactured using the laminated sheet for a paper container of the present invention.
【図４】従来の紙容器用積層シートの層構成の一例を示
す断面説明図である。FIG. 4 is an explanatory cross-sectional view showing an example of a layer configuration of a conventional laminated sheet for paper containers.
【図５】切り妻屋根型の頂部を有するゲーブルトップ型
紙容器の解体方法の一実施例を示す説明図である。FIG. 5 is an explanatory view showing one embodiment of a method of disassembling a gable-top type paper container having a gable roof type top.
１０‥‥紙容器用積層シート １１‥‥表面層 １２‥‥裏面層 １３‥‥ガスバリア層 １３ａ‥基材フィルム １３ｂ‥蒸着層 １４‥‥接着剤層 １５‥‥板紙 １６‥‥中間層 ２０‥‥ゲーブルトップ型紙容器ブランク ３０‥‥ゲーブルトップ型紙容器 ３１‥‥頂部 ｍ‥‥解体補助罫線 ｎ‥‥折り畳み罫線 10 Laminated sheet for paper container 11 Surface layer 12 Back layer 13 Gas barrier layer 13a Base film 13b Evaporation layer 14 Adhesive layer 15 Paperboard 16 Intermediate layer 20 Gable-top paper container blank 30 ‥‥ Gable-top paper container 31 ‥‥ Top m ‥‥ Disassembly auxiliary ruled line n ‥‥ Folded ruled line
Claims (2)
チレンからなり、裏面層の内側にポリエチレンテレフタ
レートフィルムなどの基材フィルムに、酸化アルミニウ
ム、酸化ケイ素などの無機酸化物の蒸着層を設けた無機
酸化物蒸着フィルムあるいはアルミニウムを蒸着したア
ルミニウム蒸着フィルムをガスバリア層として積層され
た紙容器用積層シートであって、前記ガスバリア層を形
成する無機酸化物蒸着フィルムあるいはアルミニウム蒸
着フィルムの蒸着層面を、裏面層と対向させて接着剤層
を介して積層したことを特徴とする紙容器用積層シー
ト。1. A paperboard substrate, wherein a front layer and a back layer are made of polyethylene, and a vapor deposition layer of an inorganic oxide such as aluminum oxide or silicon oxide is formed on a base film such as a polyethylene terephthalate film inside the back layer. A laminated sheet for a paper container laminated with a provided inorganic oxide vapor-deposited film or an aluminum vapor-deposited film obtained by vapor-depositing aluminum as a gas barrier layer, wherein the vapor-deposited layer surface of the inorganic oxide vapor-deposited film or the aluminum vapor-deposited film forming the gas barrier layer is formed. A laminated sheet for a paper container, wherein the laminated sheet is laminated with an adhesive layer facing the back surface layer.
て成形した易解体性ゲーブルトップ型紙容器。2. An easily dismantleable gable-top type paper container formed using the laminated sheet for a paper container according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001095199A JP4742436B2 (en) | 2001-03-29 | 2001-03-29 | Easy dismantleable gable top type paper container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001095199A JP4742436B2 (en) | 2001-03-29 | 2001-03-29 | Easy dismantleable gable top type paper container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002292778A true JP2002292778A (en) | 2002-10-09 |
| JP4742436B2 JP4742436B2 (en) | 2011-08-10 |
Family
ID=18949286
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001095199A Expired - Fee Related JP4742436B2 (en) | 2001-03-29 | 2001-03-29 | Easy dismantleable gable top type paper container |
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| Country | Link |
|---|---|
| JP (1) | JP4742436B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011000835A (en) * | 2009-06-22 | 2011-01-06 | Du Pont Mitsui Polychem Co Ltd | Heat insulating sheet, heat insulating container |
| JP2013244979A (en) * | 2012-05-24 | 2013-12-09 | Toppan Printing Co Ltd | Blank and paper container for liquid using the same |
| EP3573823B1 (en) | 2017-01-30 | 2022-06-22 | SIG Technology AG | Sheet-like composite for producing dimensionally stable food product containers with a barrier layer comprising a barrier substrate layer and an inwards-pointing barrier material layer |
| WO2023189311A1 (en) * | 2022-03-30 | 2023-10-05 | 日本製紙株式会社 | Multilayer body and paper container for liquid |
| JPWO2024095594A1 (en) * | 2022-10-31 | 2024-05-10 |
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| JPH08183139A (en) * | 1994-12-28 | 1996-07-16 | Tokyo Seishi Kk | Paper vessel |
| JPH10291279A (en) * | 1997-04-18 | 1998-11-04 | Dainippon Printing Co Ltd | Liquid paper container |
| JP2000128144A (en) * | 1998-10-29 | 2000-05-09 | Dainippon Printing Co Ltd | Liquid paper container |
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2001
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0631849A (en) * | 1992-07-21 | 1994-02-08 | Dainippon Printing Co Ltd | Barrier paper composite container |
| JPH07251480A (en) * | 1994-03-16 | 1995-10-03 | Dainippon Printing Co Ltd | Liquid container manufacturing method |
| JPH08183139A (en) * | 1994-12-28 | 1996-07-16 | Tokyo Seishi Kk | Paper vessel |
| JPH10291279A (en) * | 1997-04-18 | 1998-11-04 | Dainippon Printing Co Ltd | Liquid paper container |
| JP2000128144A (en) * | 1998-10-29 | 2000-05-09 | Dainippon Printing Co Ltd | Liquid paper container |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011000835A (en) * | 2009-06-22 | 2011-01-06 | Du Pont Mitsui Polychem Co Ltd | Heat insulating sheet, heat insulating container |
| JP2013244979A (en) * | 2012-05-24 | 2013-12-09 | Toppan Printing Co Ltd | Blank and paper container for liquid using the same |
| EP3573823B1 (en) | 2017-01-30 | 2022-06-22 | SIG Technology AG | Sheet-like composite for producing dimensionally stable food product containers with a barrier layer comprising a barrier substrate layer and an inwards-pointing barrier material layer |
| US12280569B2 (en) | 2017-01-30 | 2025-04-22 | Sig Services Ag | Sheet-like composite for producing dimensionally stable food product containers with a barrier layer comprising a barrier substrate layer and an inwards-pointing barrier material layer |
| WO2023189311A1 (en) * | 2022-03-30 | 2023-10-05 | 日本製紙株式会社 | Multilayer body and paper container for liquid |
| JPWO2024095594A1 (en) * | 2022-10-31 | 2024-05-10 | ||
| JP7745111B2 (en) | 2022-10-31 | 2025-09-26 | 日本製紙株式会社 | Paper containers |
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|---|---|
| JP4742436B2 (en) | 2011-08-10 |
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