JP2000085058A - Laminated material for packaging and lid material and pouch using laminated material - Google Patents
Laminated material for packaging and lid material and pouch using laminated materialInfo
- Publication number
- JP2000085058A JP2000085058A JP25680598A JP25680598A JP2000085058A JP 2000085058 A JP2000085058 A JP 2000085058A JP 25680598 A JP25680598 A JP 25680598A JP 25680598 A JP25680598 A JP 25680598A JP 2000085058 A JP2000085058 A JP 2000085058A
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- JP
- Japan
- Prior art keywords
- thickness
- paper
- layer
- film
- laminated material
- 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
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Abstract
Description
【０００１】[0001]
【発明の技術分野】この発明は、主に食品、飲料品等の
包装に用いる積層材と合成樹脂製容器等に用いる蓋材及
び包装用パウチに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated material used mainly for packaging foods and beverages, a lid material used for containers made of synthetic resin, and a pouch for packaging.
【０００２】[0002]
【従来の技術】近年包装材料は、環境保護や省資源の立
場から脱アルミニウム箔化が進んでおり、アルミニウム
箔を使用しなかったり、使用してもごく薄い厚みで使用
することが多くなってきている。また、食品、飲料品の
出荷検査には、金属探知器を設置しているメーカーが増
えてきており、金属箔を全く使用しない包装材料が要求
されている。2. Description of the Related Art In recent years, aluminum foil has been increasingly used as a packaging material from the standpoint of environmental protection and resource saving. ing. In addition, for shipping inspection of foods and beverages, an increasing number of manufacturers are installing metal detectors, and a packaging material that does not use metal foil at all is required.
【０００３】これらの現状に対し、最近では、合成樹脂
フィルムのみの構成からなる包装材料や合成樹脂フィル
ムと紙の積層体からなる包装材料が市場に出回ってい
る。[0003] In response to these circumstances, recently, a packaging material composed of only a synthetic resin film and a packaging material composed of a laminate of a synthetic resin film and paper have been on the market.
【０００４】[0004]
【発明の課題】しかしながら、金属箔を全く使用しない
包装材料では、剛性（「こし」ともいう。）が弱く、容
易にその積層体や蓋材はカールし、特に寒冷地での蓋材
等の使用時にはカールが大きく、食品の自動充填機で障
害が生じることが多く、その矯正には多くの労力や時間
を割き、生産性を低下させていた。However, in a packaging material using no metal foil, the rigidity (also referred to as "stiffness") is weak, and the laminate and the lid material are easily curled, especially in a cold region. When used, the curl is large, and the automatic filling machine for food often suffers an obstacle, and the correction requires a lot of labor and time to reduce the productivity.
【０００５】そこで、この発明の課題は、金属箔を用い
ることなくカールしない包装用材料を提供することであ
る。Accordingly, an object of the present invention is to provide a packaging material which does not curl without using a metal foil.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
め、この発明は、（Ａ）厚み５０〜１５０μｍの紙を主
体とする層、（Ｂ）合成樹脂フィルム単体又は複合体か
らなる層、（Ｃ）厚み１５〜５０μｍのシーラント層を
積層した包装用積層材において、（Ａ）、（Ｂ）および
（Ｃ）の各層の厚みを、（Ａ）≧（Ｂ）＋（Ｃ）となる
ようにしたのである。In order to solve the above-mentioned problems, the present invention provides (A) a layer mainly composed of paper having a thickness of 50 to 150 μm, (B) a layer made of a synthetic resin film alone or a composite, (C) In a packaging laminate in which a sealant layer having a thickness of 15 to 50 μm is laminated, the thickness of each layer of (A), (B) and (C) is such that (A) ≧ (B) + (C). It was.
【０００７】前記紙を主体とする層が片面コート紙であ
り、その剛度が縦２０〜１００ｃｍ3 ／１００、横１５
〜８０ｃｍ3 ／１００であることが好ましい。[0007] a layer composed mainly of the paper is the one-side coated paper, the stiffness of the vertical 20 to 100 3/100, horizontal 15
Is preferably ~80cm 3/100.
【０００８】前記積層材を用いて、蓋材又はパウチを形
成する。A lid or a pouch is formed using the laminated material.
【０００９】[0009]
【作用】従来の合成樹脂のみから成り立つ積層材では、
気温差（特に温帯地域から寒冷地域に蓋材等を移送し、
使用する場合）によってシーラント層に収縮力が発生
し、その結果シーラント層を内側とするカールが生じる
ことが判明した。これはシーラント層が他の補強樹脂層
や外層フィルムより熱膨張率が大きいためである。これ
を防止するためには、特定の剛性（こし）の強い紙
（Ａ）を使用し、合成樹脂層（Ｂ＋Ｃ）との厚みを特定
の比率とすることにより、カールを防止することができ
るのである。[Action] In the case of a conventional laminated material consisting of only synthetic resin,
Temperature differences (especially transporting lids etc. from temperate areas to cold areas,
(When used), a shrinkage force was generated in the sealant layer, and as a result, curling with the sealant layer inside was found to occur. This is because the sealant layer has a higher coefficient of thermal expansion than the other reinforcing resin layers or outer layer films. In order to prevent this, curl can be prevented by using paper (A) having a specific rigidity (stiffness) and a specific ratio of the thickness with the synthetic resin layer (B + C). is there.
【００１０】[0010]
【実施の形態】以下、この発明の実施形態を添付図面に
基づいて説明する。図１に示すように、この発明の包装
用積層材１は、紙２と合成樹脂フィルム層３及びシーラ
ント層４より成る。Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, a packaging laminate 1 of the present invention comprises a paper 2, a synthetic resin film layer 3 and a sealant layer 4.
【００１１】前記紙２は、純白ロール紙、クラフト紙、
上質紙、模造紙、洋紙、和紙、各種コート紙等が使用で
きるが、中でも片面コート紙の使用が最も好ましい。紙
２のフィルム層３と反対の外側となる面には、各種印刷
や１μｍ程度のオーバーコート層等が施してあってもよ
い。もちろんフィルム層３と接着させる側の面にも印刷
等が施してあっても差し支えない。片面コート紙には、
例えば「リュウオーコートＡ」（名古屋パルプ株式会社
製）が使用できる。紙の厚みは５０〜１５０μｍが適当
で、好ましくは７０〜１３０μｍ程度である。また、紙
の剛度は、縦２０〜１００ｃｍ3 ／１００、横１５〜８
０ｃｍ3 ／１００が好ましく、さらに好ましくは縦４０
〜１００ｃｍ3 ／１００、横２５〜８０ｃｍ3 ／１００
程度である。紙の厚みが５０μｍ未満、剛度（縦）２０
ｃｍ3 ／１００未満または剛度（横）１５ｃｍ3 ／１０
０未満の場合には、紙のこしが弱くカールを防止する効
果に乏しい。一方紙の厚みが１５０μｍを超える場合、
剛度（縦）１００ｃｍ3 ／１００を超える場合または剛
度（横）８０ｃｍ3 ／１００を超える場合には、積層材
１の柔軟性が乏しくなり、開封時にスリップ・スティッ
ク現象が発生し、易開封性を阻害する。また、紙の厚み
が厚すぎると（１５０μｍを超えると）ヒートシール時
に熱伝導が悪くなり、シール時間が長くなったり、シー
ル不良の原因となる恐れがあり好ましくない。The paper 2 is made of pure white roll paper, kraft paper,
Fine paper, imitation paper, western paper, Japanese paper, various coated papers and the like can be used, and use of single-side coated paper is most preferable. Various types of printing, an overcoat layer of about 1 μm, or the like may be applied to the outer surface of the paper 2 opposite to the film layer 3. Of course, printing or the like may be performed on the surface to be bonded to the film layer 3. On one side coated paper,
For example, "Ryuocoat A" (manufactured by Nagoya Pulp Co., Ltd.) can be used. The thickness of the paper is suitably 50 to 150 μm, preferably about 70 to 130 μm. In addition, the stiffness of the paper, the vertical 20~100cm 3/100, horizontal 15-8
Preferably 0 cm 3/100, more preferably vertical 40
~100cm 3/100, horizontal 25~80cm 3/100
It is about. Paper thickness less than 50 μm, rigidity (vertical) 20
cm 3/100, or less than stiffness (lateral) 15cm 3/10
If it is less than 0, the paper strain is weak and the effect of preventing curling is poor. On the other hand, when the thickness of the paper exceeds 150 μm,
If more than a case or rigidity (lateral) 80 cm 3/100 exceeds stiffness (vertical) 100 cm 3/100 has the flexibility of the laminate 1 is poor, slip stick phenomenon occurs upon opening, the easy-open Inhibit. On the other hand, if the thickness of the paper is too large (more than 150 μm), heat conduction at the time of heat sealing deteriorates, which may undesirably increase the sealing time or cause poor sealing.
【００１２】前記合成樹脂フィルム層３は、合成樹脂フ
ィルム単体又は複合体から形成され、延伸フィルム、未
延伸フィルムのいずれであってもよい。樹脂の種類は、
ポリスチレン（以下、ＰＳ）、ポリエチレン（以下、Ｐ
Ｅ）、ポリプロピレン（以下、ＰＰ）、ポリエステル、
ポリエチレンテレフタレート（以下、ＰＥＴ）、ポリア
ミド（以下、ＮＹ）、ポリウレタン、ポリビニルアルコ
ール、エチレン−酢酸ビニル共重合体、エチレン−ビニ
ルアルコール共重合体（以下、ＥＶＯＨ）等が使用でき
る。また、任意の位置にアルミニウム、シリカ、アルミ
ナ等を蒸着させたフィルムを使用して、バリアー性を改
善することもできる。The synthetic resin film layer 3 is formed of a synthetic resin film alone or a composite, and may be either a stretched film or an unstretched film. The type of resin is
Polystyrene (hereinafter, PS), polyethylene (hereinafter, P
E), polypropylene (hereinafter, PP), polyester,
Polyethylene terephthalate (hereinafter, PET), polyamide (hereinafter, NY), polyurethane, polyvinyl alcohol, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer (hereinafter, EVOH) and the like can be used. Further, the barrier property can be improved by using a film in which aluminum, silica, alumina, or the like is deposited at an arbitrary position.
【００１３】前記シーラント層４は、容器等の被着体に
密封可能な合成樹脂を選択できる。例えば、エチレン−
酢酸ビニル共重合体（以下、ＥＶＡ）を主成分とするも
のや、ＰＰとＰＥをブレンドしたもの（以下、ＰＰＥ）
等が使用できる。シーラント層４と合成樹脂フィルム層
３の密着性が悪い場合には、その間に接着剤およびＰＥ
樹脂等を介在させてその密着性（密着強度）を改善させ
ることができるが、この場合のＰＥは、シーラント層４
に含まれるものとする。As the sealant layer 4, a synthetic resin that can be sealed to an adherend such as a container can be selected. For example, ethylene-
A product containing vinyl acetate copolymer (hereinafter, EVA) as a main component or a product obtained by blending PP and PE (hereinafter, PPE)
Etc. can be used. If the adhesion between the sealant layer 4 and the synthetic resin film layer 3 is poor, an adhesive and PE
The adhesion (adhesion strength) can be improved by interposing a resin or the like.
Shall be included.
【００１４】上記積層材１において、紙２の厚みを
（Ａ）、層３の厚みを（Ｂ）、層４の厚みを（Ｃ）とし
たとき、各層の厚みの関係は、次式を満足することが必
要である。In the laminated material 1, when the thickness of the paper 2 is (A), the thickness of the layer 3 is (B), and the thickness of the layer 4 is (C), the relationship of the thickness of each layer satisfies the following equation. It is necessary to.
【００１５】（Ａ）≧（Ｂ）＋（Ｃ） さらに好ましくは ２．５≧（Ａ）／（Ｂ＋Ｃ）
≧１ ここで、フィルム層３が複数の層から形成される場合
は、（Ｂ）はそれらの合計厚みである。紙２の厚み
（Ａ）は、他の層３、４の厚みの合計（Ｂ）＋（Ｃ）と
同等以上にする必要がある。同等未満の場合では、カー
ルを防止する効果が不十分となる。一方紙２の厚み
（Ａ）の上限は、好ましくは（Ｂ＋Ｃ）の２．５倍以下
が適当で、これを超えると積層材１の柔軟性が損なわれ
ることや、不必要に紙の厚みが厚くなりコストアップや
ヒートシールに要する時間が長くなり好ましくない。(A) ≧ (B) + (C) More preferably 2.5 ≧ (A) / (B + C)
≧ 1 Here, when the film layer 3 is formed from a plurality of layers, (B) is the total thickness thereof. The thickness (A) of the paper 2 needs to be equal to or greater than the sum of the thicknesses of the other layers 3 and 4 (B) + (C). If it is less than the same, the effect of preventing curling will be insufficient. On the other hand, the upper limit of the thickness (A) of the paper 2 is preferably 2.5 times or less of (B + C). If the upper limit is exceeded, the flexibility of the laminated material 1 is impaired, or the thickness of the paper is unnecessarily reduced. It is not preferable because the thickness increases, the cost increases, and the time required for heat sealing increases.
【００１６】積層材１の各層あるいは各フィルム・樹脂
の積層、成膜法は特に限定されることはなく、ポリエー
テル系、ポリエステル系、ポリウレタン系等の一般的な
接着剤を用いて、ドライラミネーションにより積層させ
る方法や、樹脂押し出し法により積層させる方法等が採
用できる。また、必要に応じて各層間にアンカーコート
層を介在させてもよい。The method for laminating and forming each layer of the laminated material 1 or each film and resin is not particularly limited, and dry lamination is carried out using a general adhesive such as polyether, polyester, or polyurethane. And a method of laminating by a resin extrusion method. Further, an anchor coat layer may be interposed between the respective layers as needed.
【００１７】以下に実施例及び比較例を挙げる。Examples and comparative examples will be described below.
【００１８】[0018]
【実施例１】厚み２５μｍのＰＥＴフィルムの片面にポ
リウレタン系接着剤を塗布後、ドライラミネーション法
により、厚み７５μｍ、剛度（縦）３６．６（横）２
６．４ｃｍ3 ／１００の片面コート紙の非コート側に貼
り合わせた。この貼り合わせ材のＰＥＴフィルム面にア
ンカーコート処理を施した後、シーラント層としてＰＥ
とＥＶＡ樹脂を押し出しラミネーション法により形成し
た。なお、ＰＥの成形後の膜厚は１５μｍ、ＥＶＡは２
５μｍであった。Example 1 After a polyurethane adhesive was applied to one side of a PET film having a thickness of 25 μm, the thickness was 75 μm and the rigidity (vertical) was 36.6 (horizontal) 2 by dry lamination.
6.4cm 3/100 was bonded to the non-coated side of one side coated paper. After performing an anchor coat treatment on the PET film surface of the bonded material, the sealant layer is made of PE.
And EVA resin were formed by extrusion lamination. The PE film thickness after molding was 15 μm, and the EVA was 2 μm.
It was 5 μm.
【００１９】[0019]
【実施例２】厚み１２μｍのＰＥＴフィルムの片面にポ
リウレタン系接着剤を塗布後、ドライラミネーション法
により、厚み１００μｍ、剛度（縦）７６．４（横）２
９．２ｃｍ3 ／１００の片面コート紙の非コート側に貼
り合わせた。この貼り合わせ材のＰＥＴフィルム面にア
ンカーコート処理を施した後、シーラント層としてＰＥ
とＥＶＡ樹脂を押し出しラミネーション法により形成し
た。なお、ＰＥの成形後の膜厚は１０μｍ、ＥＶＡは２
５μｍであった。Example 2 After a polyurethane adhesive was applied to one side of a PET film having a thickness of 12 μm, the thickness was 100 μm and the rigidity (vertical) was 76.4 (horizontal) 2 by a dry lamination method.
9.2cm 3/100 was bonded to the non-coated side of one side coated paper. After performing an anchor coat treatment on the PET film surface of the bonded material, the sealant layer is made of PE.
And EVA resin were formed by extrusion lamination. The PE film thickness after molding was 10 μm, and the EVA was 2 μm.
It was 5 μm.
【００２０】[0020]
【実施例３】厚み８μｍの延伸ＰＰフィルムの片面にポ
リウレタン系接着剤を塗布後、ドライラミネーション法
により、厚み５０μｍ、剛度（縦）３８．０（横）２
２．７ｃｍ3 ／１００の片面コート紙の非コート側に貼
り合わせた。この貼り合わせ材のＰＰフィルム面にポリ
ウレタン系接着剤を塗布後、ドライラミネーション法に
より、厚み３０μｍの変成ポリエチレン系フィルムを貼
り合わせた。Example 3 After applying a polyurethane-based adhesive to one surface of a stretched PP film having a thickness of 8 μm, a thickness of 50 μm and a stiffness (length) of 38.0 (width) 2 were obtained by dry lamination.
2.7cm 3/100 was bonded to the non-coated side of one side coated paper. After applying a polyurethane adhesive to the PP film surface of the bonding material, a modified polyethylene film having a thickness of 30 μm was bonded by a dry lamination method.
【００２１】[0021]
【実施例４】厚み１２μｍの無延伸ＥＶＯＨフィルムの
片面にポリウレタン系接着剤を塗布後、ドライラミネー
ション法により、厚み８０μｍ、剛度（縦）７９．０
（横）５７．８ｃｍ3 ／１００の片面コート紙の非コー
ト面に貼り合わせた。この貼り合わせ材のＥＶＯＨフィ
ルム面にポリウレタン系接着剤を塗布後、ドライラミネ
ーション法により、厚み３０μｍの変成ポリエチレン系
フィルムを貼り合わせた。Example 4 A polyurethane-based adhesive was applied to one side of a non-stretched EVOH film having a thickness of 12 μm, and then dried by a lamination method to a thickness of 80 μm and a rigidity (vertical) of 79.0.
It was bonded to the non-coated surface of one side coated paper (horizontal) 57.8cm 3/100. After applying a polyurethane-based adhesive to the EVOH film surface of the bonding material, a modified polyethylene-based film having a thickness of 30 μm was bonded by a dry lamination method.
【００２２】[0022]
【実施例５】厚み１５μｍのＮＹフィルムの片面にポリ
ウレタン系接着剤を塗布後、ドライラミネーション法に
より厚み６０μｍ、剛度（縦）４２．５（横）２５．３
ｃｍ3 ／１００の片面コート紙を貼り合わせた。この貼
り合わせ材のＮＹフィルム面にアンカーコート処理を施
した後、シーラント層としてＰＥとＥＶＡ樹脂を押し出
しラミネーション法により形成した。なお、ＰＥの成形
後の膜厚は２０μｍ、ＥＶＡは２０μｍであった。Example 5 A 15 μm thick NY film was coated with a polyurethane-based adhesive on one side and then dried by a lamination method to a thickness of 60 μm and a rigidity (length) of 42.5 (width) of 25.3.
bonded to one side coated paper cm 3/100. After performing an anchor coat treatment on the NY film surface of the bonding material, PE and EVA resin were formed as a sealant layer by extrusion lamination. The thickness of the PE after molding was 20 μm, and the EVA was 20 μm.
【００２３】[0023]
【実施例６】厚み２５μｍのＮＹフィルムの片面にポリ
ウレタン系接着剤を塗布後、ドライラミネーション法に
より、厚み１２０μｍ、剛度（縦）９１．１（横）４
２．３ｃｍ3 ／１００の片面コート紙を貼り合わせた。
この貼り合わせ材のＮＹフィルム面に、アンカーコート
処理を施した後、シーラント層としてＰＥとＥＶＡ樹脂
を押し出しラミネーション法により形成した。なお、Ｐ
Ｅの成形後の膜厚は１５μｍ、ＥＶＡは２０μｍであっ
た。Embodiment 6 A polyurethane adhesive is applied to one side of a NY film having a thickness of 25 μm, and a dry lamination method is used to obtain a film having a thickness of 120 μm and a rigidity (length) of 91.1 (width) 4.
2.3cm 3/100 was bonded to one side coated paper.
After performing an anchor coat treatment on the NY film surface of the bonding material, PE and EVA resin were extruded as a sealant layer by a lamination method. Note that P
The film thickness of E after molding was 15 μm, and the EVA was 20 μm.
【００２４】[0024]
【比較例１】厚さ２５μｍのＰＥＴフィルムの片面にポ
リウレタン系接着剤を塗布後、ドライラミネーション法
により、厚み７５μｍ、剛度（縦）３６．６（横）２
６．４ｃｍ3 ／１００の片面コート紙の非コート側を貼
り合わせた。この貼り合わせ材のＰＥＴフィルム面にア
ンカーコート処理を施した後、シーラント層として厚み
４０μｍのＥＶＡフィルムをＰＥ押し出しラミネーショ
ン法により貼り合わせた。なお、ＰＥは乾燥後膜厚１５
μｍであった。Comparative Example 1 A polyurethane adhesive was applied to one surface of a PET film having a thickness of 25 μm, and then a thickness of 75 μm and a rigidity (vertical) of 36.6 (horizontal) 2 were obtained by dry lamination.
6.4cm 3/100 bonded to non-coated side of one side coated paper. After performing an anchor coat treatment on the PET film surface of the bonding material, an EVA film having a thickness of 40 μm was bonded as a sealant layer by a PE extrusion lamination method. The PE has a thickness of 15 after drying.
μm.
【００２５】[0025]
【比較例２】厚み１２μｍの延伸ＰＰフィルム（１２μ
ｍ）の片面にポリウレタン系接着剤を塗布後、ドライラ
ミネーション法により、厚み５０μｍ、剛度（縦）３
８．０（横）２２．７ｃｍ3 ／１００の片面コート紙を
貼り合わせた。この貼り合わせ材のＰＰフィルム面にポ
リウレタン系接着剤を塗布後、ドライラミネーション法
により、厚み４０μｍの変成ポリエチレン系フィルムを
貼り合わせた。Comparative Example 2 A stretched PP film having a thickness of 12 μm (12 μm)
m), after applying a polyurethane-based adhesive on one side, dry lamination method to a thickness of 50 μm and a rigidity (vertical) of 3
8.0 bonded to one side coated paper (horizontal) 22.7cm 3/100. After a polyurethane adhesive was applied to the PP film surface of the bonding material, a modified polyethylene film having a thickness of 40 μm was bonded by a dry lamination method.
【００２６】[0026]
【比較例３】厚み５０μｍのＰＥＴフィルム（５０μ
ｍ）の片面にポリウレタン系接着剤を塗布後、ドライラ
ミネーション法により、厚み１００μｍ、剛度（縦）７
６．４（横）２９．２ｃｍ3 ／１００の片面コート紙を
貼り合わせた。この貼り合わせ材のＰＥＴフィルム面に
アンカーコート処理を施した後、シーラント層として厚
み４０μｍの変成ポリエチレン系フィルムをＰＥ押し出
しラミネーション法により貼り合わせた。なお、ＰＥは
成形後膜厚１５μｍであった。Comparative Example 3 PET film (50 μm thick)
m), after applying a polyurethane-based adhesive to one surface, dry lamination is used to obtain a layer having a thickness of 100 μm and a rigidity (vertical) of 7
6.4 bonded to one side coated paper (horizontal) 29.2cm 3/100. After performing an anchor coat treatment on the PET film surface of the bonded material, a modified polyethylene film having a thickness of 40 μm was bonded as a sealant layer by a PE extrusion lamination method. The PE had a thickness of 15 μm after molding.
【００２７】上記実施例及び比較例で用いた片面コート
紙は、「リュウオーコートＡ」（名古屋パルプ株式会社
製）または「コーモラント紙」（富士加工株式会社
製）、ＰＥＴフィルムは、「Ｅ５１００」（東洋紡績株
式会社製）、ＥＶＯＨフィルムは、クラレ株式会社製、
延伸ＰＰフィルムは、「Ｍ−２」（東セロ株式会社
製）、変成ポリエチレン系フィルムは、「ＶＭＸ．」
（三菱化学株式会社製）、ＮＹフィルムは、「エンブレ
ムＯＮ」（ユニチカ株式会社製）、ＥＶＡ樹脂は、東ソ
ー株式会社製、ＥＶＡフィルムは、東ソー株式会社製で
あった。The one-side coated paper used in the above Examples and Comparative Examples was "Ryuocoat A" (manufactured by Nagoya Pulp Co., Ltd.) or "Cormorant Paper" (manufactured by Fuji Kako), and the PET film was "E5100". (Toyobo Co., Ltd.), EVOH film made by Kuraray Co., Ltd.,
The stretched PP film is “M-2” (manufactured by Tosero Corporation), and the modified polyethylene film is “VMX.”
(Mitsubishi Chemical Corporation), NY film was "Emblem ON" (Unitika), EVA resin was Tosoh Corporation, and EVA film was Tosoh Corporation.
【００２８】実施例および比較例で作製した積層材から
１００ｍｍ角の試片を切り出し、５℃および１０℃の雰
囲気に２４時間保存し、取り出し後すぐにカール度合を
調べた。カール量は平滑なガラス面からの持ち上がり距
離（最も離れた点のガラス面からの距離）で測定し、５
℃および１０℃での保存後両者とも９ｍｍ以下のものを
良品（良）と判断し、１０ｍｍ以上のものを不良（不）
とした。結果を図２に示す。なお、紙の剛度について
は、ＪＩＳ・Ｐ−８１４３（クラーク法）によるもので
ある。Samples of 100 mm square were cut out from the laminated materials prepared in Examples and Comparative Examples, stored in an atmosphere at 5 ° C. and 10 ° C. for 24 hours, and immediately after being taken out, the degree of curl was examined. The curl amount is measured by the lifting distance from the smooth glass surface (the distance from the glass surface at the farthest point), and
After storage at 10 ° C. and 10 ° C., those having a thickness of 9 mm or less are judged as good (good), and those having a thickness of 10 mm or more are defective (bad)
And The results are shown in FIG. The stiffness of the paper is based on JIS P-8143 (Clark method).
【００２９】[0029]
【発明の効果】この発明の積層材は、比較的低コストで
製造でき、気温差によるカールが生じることなく安定し
た状態で使用することができる。また、従来使用されて
いたアルミニウム箔を使用しないので、容易に焼却処分
することもできる。さらに、焼却処分しない場合であっ
ても紙層と合成樹脂層を分離できるので、リサイクル性
に優れる。そのほか、この発明の積層材は、片面が紙で
形成されているため、その表面に必要最低限の凹凸を有
し、重ねた時にブロッキングが生じることなくスムーズ
に分離供給することができる効果もある。The laminated material of the present invention can be manufactured at a relatively low cost, and can be used in a stable state without curling due to a temperature difference. Also, since the aluminum foil conventionally used is not used, it can be easily incinerated. Furthermore, since the paper layer and the synthetic resin layer can be separated even when they are not incinerated, they are excellent in recyclability. In addition, since the laminated material of the present invention is formed on paper on one side, it has a minimum required unevenness on its surface, and also has an effect that it can be smoothly separated and supplied without blocking when stacked. .
【図１】この発明の積層材を示す断面図FIG. 1 is a sectional view showing a laminated material of the present invention.
【図２】実施例及び比較例の結果を示す図表FIG. 2 is a table showing the results of Examples and Comparative Examples.
１ 積層材 ２ 紙 ３ 合成樹脂フィルム層 ４ シーラント層 Reference Signs List 1 laminated material 2 paper 3 synthetic resin film layer 4 sealant layer
フロントページの続き Ｆターム(参考） 4F100 AJ01A AK01B AK01C AK04C AK42B AK51G AK68C BA03 BA07 BA10A BA10C BA13 BA25A BA25B CC00A DG10A GB16 GB18 GB23 JA20A JA20B JA20C JK01A JL00 JL02 JL12C YY00A YY00CContinued on the front page F-term (reference) 4F100 AJ01A AK01B AK01C AK04C AK42B AK51G AK68C BA03 BA07 BA10A BA10C BA13 BA25A BA25B CC00A DG10A GB16 GB18 GB23 JA20A JA20B JA20C JK01A JL00 JL00 JL12Y
Claims (4)
とする層、（Ｂ）合成樹脂フィルム単体又は複合体から
なる層、（Ｃ）厚み１５〜５０μｍのシーラント層を積
層した積層材において、（Ａ）、（Ｂ）および（Ｃ）の
各層の厚みが次の関係にある包装用積層材。 （Ａ）≧（Ｂ）＋（Ｃ）1. A laminated material comprising (A) a layer mainly composed of paper having a thickness of 50 to 150 μm, (B) a layer made of a synthetic resin film alone or a composite, and (C) a sealant layer having a thickness of 15 to 50 μm. , (A), (B) and (C) the thickness of each layer has the following relationship packaging laminate. (A) ≧ (B) + (C)
り、その剛度が縦２０〜１００ｃｍ3 ／１００、横１５
〜８０ｃｍ3 ／１００である請求項１記載の包装用積層
材。2. A layer of paper mainly a single-sided coated paper, the stiffness of the vertical 20 to 100 3/100, horizontal 15
~80cm a 3/100 claim 1 packaging laminate according.
なる蓋材。3. A lid comprising the packaging laminate according to claim 1.
なるパウチ。4. A pouch comprising the laminate for packaging according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25680598A JP3982921B2 (en) | 1998-09-10 | 1998-09-10 | Lid material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25680598A JP3982921B2 (en) | 1998-09-10 | 1998-09-10 | Lid material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000085058A true JP2000085058A (en) | 2000-03-28 |
| JP3982921B2 JP3982921B2 (en) | 2007-09-26 |
Family
ID=17297692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25680598A Expired - Fee Related JP3982921B2 (en) | 1998-09-10 | 1998-09-10 | Lid material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3982921B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004115089A (en) * | 2002-09-27 | 2004-04-15 | Toyo Aluminium Kk | Lid material excellent in water resistance |
-
1998
- 1998-09-10 JP JP25680598A patent/JP3982921B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004115089A (en) * | 2002-09-27 | 2004-04-15 | Toyo Aluminium Kk | Lid material excellent in water resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3982921B2 (en) | 2007-09-26 |
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