JP2004167975A - Lamination material and laminated tube container - Google Patents

Lamination material and laminated tube container Download PDF

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Publication number
JP2004167975A
JP2004167975A JP2002339117A JP2002339117A JP2004167975A JP 2004167975 A JP2004167975 A JP 2004167975A JP 2002339117 A JP2002339117 A JP 2002339117A JP 2002339117 A JP2002339117 A JP 2002339117A JP 2004167975 A JP2004167975 A JP 2004167975A
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Japan
Prior art keywords
resin layer
layer
laminated
resin
white
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Pending
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JP2002339117A
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Japanese (ja)
Inventor
Noriyasu Tomizawa
典康 富沢
Kenji Sakae
賢治 栄
Teppei Yamamoto
哲兵 山本
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Toppan Inc
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Toppan Printing Co Ltd
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Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP2002339117A priority Critical patent/JP2004167975A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lamination material to be used for a tube-shaped container that has a high covering power to white color, a good adhesion with a core layer consisting of an aluminum foil and a white resin layer having an excellent extrusion processability, and to provide a laminated tube container for the cylindrical shell of which the lamination material is used. <P>SOLUTION: The lamination material is a laminate of at least a surface resin layer (3), a white mixed resin layer (2), the core layer (1) consisting of the aluminum foil, an adhesive resin layer (4) and a back resin layer (5). The white mixed resin layer (2) comprises a mixed resin in which 3-8 pts.wt. titanium oxide is compounded and kneaded with 100 pts.wt. ionomer resin. The lamination material is laminated by means of melt-extrusion lamination process. The cylindrical shell (21) of the laminated tube container is made up of the lamination material. A shoulder (22) and a mouth (23) are arranged at one end of the cylindrical shell (21). <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は練り歯磨、食品、化粧品や医薬品などを包装する為のチューブ状容器の筒状胴部に使用する積層材料及びそれを用いたラミネートチューブ容器に関するものである。
【0002】
【従来の技術】
従来、チューブ状容器の筒状胴部に使用する積層材料は、外部からの水蒸気や酸素等の侵入防止あるいは内容物に含まれる各種成分の外部への散逸を防止する為に優れたガスバリア性を有するアルミニウム箔を芯材層に用い、その芯材層の両面に多層の熱可塑性樹脂を積層したものが用いられている。アルミニウム箔を芯材層に使用した積層材料としては種々の構成のものがあり、例えば、▲1▼(外側)ポリエチレン樹脂層/接着剤層/延伸フィルム層/印刷層/接着剤層/アルミニウム箔/接着性樹脂層/ポリエチレン樹脂層(内側)の構成のもの、▲2▼(外側)ポリエチレン樹脂層/接着剤層/延伸フィルム層/印刷層/接着剤層/乳白ポリエチレン樹脂層/接着性樹脂層/アルミニウム箔/接着性樹脂層/ポリエチレン樹脂層(内側)の構成のもの、▲3▼(外側)ポリエチレン樹脂層/乳白ポリエチレン樹脂層/接着性樹脂層/アルミニウム箔/接着性樹脂層/ポリエチレン樹脂層(内側)の構成のもの等があり、▲1▼及び▲2▼の構成のものは通常大ロット商品のものに使用され、▲3▼の構成のものは小ロット商品のものに使用される。また、▲1▼及び▲2▼の構成のものは、事前に延伸フィルムの裏面に印刷層を積層した二層フィルムの両面に他の層を積層する方法で製造され、印刷方法はグラビア印刷方式が多く、▲3▼の構成のものに印刷層を設ける場合は、積層材料を筒状胴部に用いたチューブ状容器の筒状胴部の外円周表面にオフセット印刷方式、シルクスクリーン印刷方式、転写印刷方式等の印刷方式で最後に印刷層を設ける方法で製造される。前記印刷層は品名、製造者、販売者、記号等の文字や絵柄からなっている。
【0003】
【発明が解決しようとする課題】
しかしながら、前記▲1▼の構成の場合は、乳白ポリエチレン樹脂層がない為に延伸フィルム層に印刷した絵柄や文字等が見難いので、見易くする為に延伸フィルムの一方の面の全面あるいは全面に近い面積を白色インキで下地印刷する必要があり、かつ、白色の隠蔽性を上げる為に白色インキ膜を厚くする必要があり、材料費のコストアップに繋がっていた。さらに、▲1▼、▲2▼及び▲3▼の構成共に積層工程が多く、各工程で生ずる不良が積算されて、最終の良品収率が非常に悪くなり、収率向上の為にも積層工程を簡略化する必要があった。
【0004】
本発明の課題は、チューブ状容器に用いる積層材料に於いて、白色の隠蔽性が良く、アルミニウム箔からなる芯材層との接着性が強く、押出加工適性が良好な白色樹脂層を有する積層材料及びその積層材料を筒状胴部に用いたラミネートチューブ容器を提供することにある。
【0005】
【課題を解決するための手段】
本発明の請求項1に係る発明は、少なくとも、表面樹脂層、白色混合樹脂層、アルミニム箔からなる芯材層、接着性樹脂層、裏面樹脂層が積層されており、該白色混合樹脂層がアイオノマー樹脂100重量部に対し酸化チタン3〜8重量部の配合割合で混練した混合樹脂からなることを特徴とする積層材料である。
【0006】
本発明の請求項2に係る発明は、上記請求項1に係る発明に於いて、前記白色混合樹脂層が溶融押出ラミネート法で積層されていることを特徴とする積層包装材料である。
【0007】
本発明の請求項3に係る発明は、上記請求項1又は請求項2記載の積層材料の両端部の最外層である表面樹脂層と最内層である裏面樹脂層を重ね合わせて筒状にし、重ね合わせた部分を熱融着して筒状胴部を形成し、該筒状胴部の一方の開口部に肩部、口部を設けたものからなることを特徴とするラミネートチューブ容器である。
【0008】
【作用】
本発明によれば、少なくとも、表面樹脂層、白色混合樹脂層、アルミニム箔からなる芯材層、接着性樹脂層、裏面樹脂層が積層されており、該白色混合樹脂層がアイオノマー樹脂100重量部に対し酸化チタン3〜8重量部の配合割合で混練した混合樹脂からなっており、溶融押出ラミネート法で積層されているので、押出加工が良好に行われ、アルミニウム箔からなる芯材層との接着が強固で、かつ優れた白色の隠蔽性を有しているので、積層工程の簡略化ができ、最終の良品収率を向上させることができる。また、この積層材料を筒状胴部に使用したラミネートチューブ容器は、筒状胴部の外円周に設けられた絵柄や文字などを明瞭に視認でき、商品価値も向上する。
【0009】
【発明の実施の形態】
本発明の積層材料及びその積層材料を筒状胴部に用いたラミネートチューブ容器を実施の形態に沿って以下に詳細に説明する。
【0010】
図1(a)は本発明の一実施例の積層材料の側断面図であり、積層材料(10)は外側から厚み方向に順に、表面樹脂層(3)、白色混合樹脂層(2)、芯材層(1)、接着性樹脂層(4)、裏面樹脂層(5)を積層した構成になっており、(b)は他の実施例の積層材料の側断面図であり、積層材料(11)は外側から厚み方向に順に、表面樹脂層(3)、接着剤層(9)、プラスチックフィルム層(6)、印刷層(7)、接着剤層(8)、白色混合樹脂層(2)、芯材層(1)、接着性樹脂層(4)、裏面樹脂層(5)を積層した構成になっている。
【0011】
前記(a)の構成の積層材料(10)は、小ロット商品用に良く使用され、(b)の構成の積層材料(11)は、大ロット商品用に良く使用される。
【0012】
前記芯材層(1)には、厚さ7〜30μmのアルミニウム箔を使用する。
【0013】
前記白色混合樹脂層(2)は、エチレンとメタクリル酸の共重合体をナトリウム、亜鉛などの金属イオンで部分的に架橋した熱可塑性樹脂100重量部に対し酸化チタン3〜8重量部の配合割合で混練した混合樹脂からなっているので、押出加工適性が優れており、芯材層との接着力も強固で、白色の隠蔽性も優れている。本発明のアイオノマー樹脂とは上記の熱可塑性樹脂のことを指す。酸化チタンの混合量が3重量部未満の場合は白色の隠蔽性が不十分になり、8重量部を超えると混合樹脂の加工適性が悪くなると共に、芯材層及び表面樹脂層との接着力が弱くなるので良くない。アルミニウム箔への接着性が良い樹脂としてポリマー中にカルボキシル基を有する樹脂が使用されるが、通常使用されるエチレン/アクリル酸共重合体樹脂あるいはエチレン/メタクリル酸共重合体樹脂に同一配合割合の酸化チタンを混合した混合樹脂を使用した場合、押出加工時に酸化チタンがポリマー中のカルボキシル基と反応し、押出した樹脂がゲル状態になり、製膜性が非常に悪く、加工が困難であるが、本発明のアイオノマー樹脂を使用することにより、ポリマー中にカルボキシル基を有していても、金属イオンで架橋されているので、押出加工時の加工適性が良好で、芯材層との接着力も強固で、白色の隠蔽性も優れているという特徴を有している。
【0014】
前記表面樹脂層(3)は、ポリオレフィン系樹脂であれば特に限定されないが、低密度ポリエチレン樹脂、中密度ポリエチレン樹脂、高密度ポリエチレン樹脂、直鎖状低密度ポリエチレン樹脂等のエチレン系樹脂が好ましい。これらの樹脂のフィルムでも構わない。厚みは10〜150μmが好ましい。
【0015】
前記接着性樹脂(4)は、芯材層に使用したアルミニウム箔に接着剤を介さないで強固に接着する共重合タイプの接着性樹脂が好ましく、エチレン/エチルアクリレート共重合体(EEA)樹脂、エチレン/アクリル酸共重合体(EAA)樹脂、エチレン/メタクリル酸共重合体(EMAA)樹脂、エチレン/メチルメタクリレート共重合体(EMMA)等を使用する。積層方法は公知の溶融押出ラミネート法で積層する。厚みは10〜35μmが好ましい。
【0016】
前記裏面樹脂層(5)は、ポリオリフィン系樹脂であれば特に限定されないが、低密度ポリエチレン樹脂、直鎖状低密度ポリエチレン樹脂、中密度ポリエチレン樹脂、高密度ポリエチレン樹脂、エチレン/酢酸ビニル共重合体樹脂などのエチレン系樹脂が接着性樹脂層(4)との接着性の点で好ましい。これらの樹脂のフィルムでも構わない。積層方法は前記各種樹脂を公知の溶融押出ラミネート法で積層する。厚みは適宜選定するが、20〜35μm程度のものが使用される。
【0017】
前記プラスチックフィルム層(6)は延伸フィルムが好ましく、二軸延伸ポリエステルフィルム、二軸延伸ナイロンフィルム、二軸延伸ポリプロピレンフィルムなどを使用する。
【0018】
前記印刷層(7)は、ポリアミド系インキ、硝化綿系インキ、塩酢ビ系インキ、ポリエステル系インキ、ポリウレタン系インキなどを使用して公知の印刷方法で積層する。
【0019】
前記接着剤層(8、9)には、主にポリウレタン系接着剤を使用し、塗布量は1〜5g/m(乾燥状態)の範囲が好ましい。
【0020】
図2は本発明の積層材料を筒状胴部に用いた一実施例のラミネートチューブ容器の断面図であり、ラミネートチューブ容器(20)は積層材料(10)を用いて、両端部の最外層の表面樹脂層(3)と最内層の裏面樹脂層(8)を重ね合わせ筒状にし、重ね合わさった部分を熱融着して熱融着部(21a)を設けて筒状胴部(21)を作成し、その筒状胴部(21)の一方の開口部(21b)に肩部(22)、口部(23)を設けており、他方に内容物を充填するための開口部(21c)を有している。なお、前記肩部(22)及び口部(23)は、乳白ポリエチレン樹脂等を用いて一体成型して設ける。
【0021】
なお、図示していないが本発明のラミネートチューブ容器に内容物を充填、密封する場合は、例えばラミネートチューブ容器(20)の口部(23)をアルミニウム箔などの蓋材で密封し、その上にキャップを設けた後に、開口部(21c)から内容物を充填し、その開口部(21c)に熱融着部を設ける方法が一般的である。
【0022】
【実施例】
本発明の積層材料を具体的な実施例を挙げて詳細に説明するが、本発明は実施例に限定されるものではない。
【0023】
〈実施例1〉
芯材層(1)に厚さ12μmのアルミニウム箔を使用し、そのアルミニウム箔の一方の面に白色混合樹脂層(2)としてアイオノマー樹脂(三井デュポン・ポリケミカル(株)、商品名:ハイミランH1652)100重量部に対し酸化チタン7重量部の配合割合で混合し、混練した白色混合樹脂を樹脂温度280℃で厚さ45μmになるように押出して積層し、その上に表面樹脂層(3)として厚さ125μmの直鎖状低密度ポリエチレンフィルム(タマポリ(株)、商品名:T2E153BC)を積層した。引き続いて、アルミニウム箔の他方の面に接着性樹脂層(4)として厚さ30μmのEMAA樹脂(三井デュポン・ポリケミカル(株)、商品名:ニュークレルN1108C)を積層し、その上に裏面樹脂層(5)として厚さ60μmの直鎖状低密度ポリエチレンフィルム(タマポリ株)、商品名:T2E155BC)を積層し、本発明の積層材料を作成した。
【0024】
〈比較例1〉
白色混合樹脂層の樹脂として、EAA樹脂(日本ポリケム(株)、商品名:ユカロンA221MX)100重量部に対し酸化チタン7重量部の配合割合で混合し、混練した混合樹脂を使用した以外は、実施例1と同様にして比較用の積層材料を作成した。
【0025】
【表1】

Figure 2004167975
【0026】
表1の結果から、実施例1の積層材料は白色混合樹脂層に使用した混合樹脂の押出加工時の製膜性が良好で、アルミニウム箔との接着力も強く、白色の隠蔽性も優れていた。比較例1の積層材料は白色混合樹脂層に使用した混合樹脂は押出加工時に良好な製膜性が得られなかったので、アルミニウム箔との接着力も悪く、白色の隠蔽性も不良であった。
【0027】
【発明の効果】
本発明の積層材料は、少なくとも、表面樹脂層、白色混合樹脂層、アルミニウム箔からなる芯材層、接着性樹脂層、裏面樹脂層が積層されており、該白色混合樹脂層がアイオノマー樹脂100重量部に対し酸化チタン1〜7重量部の配合割合で混練した混合樹脂からなっているので、加工性も良好で、芯材層との接着力も強固であり、かつ、白色の隠蔽性も優れている。従って、積層工程も効率化でき、最終の良品収率も向上させることができる。さらに、この積層材料を筒状胴部に用いたラミネートチューブ容器は胴部外円周に設けたカラー等の絵柄も美しく見え、各種表示の文字、記号等も容易に読むことができる。
【図面の簡単な説明】
【図1】(a)は本発明の一実施例の積層材料の側断面図であり、(b)は他の実施例の積層材料の側断面図である。
【図2】本発明の積層材料を筒状胴部に用いた一実施例のラミネートチューブ容器の断面図である。
【符号の説明】
1…芯材層
2…白色混合樹脂層
3…表面樹脂層
4…接着性樹脂層
5…裏面樹脂層
6…プラスチックフィルム層
7…印刷層
8,9…接着剤層
10,11…積層材料
20…ラミネートチューブ容器
21…筒状胴部
21a…熱融着部
21b,21c…開口部
22…肩部
23…口部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a laminated material used for a tubular body of a tubular container for packaging toothpaste, food, cosmetics, pharmaceuticals, and the like, and a laminated tube container using the same.
[0002]
[Prior art]
Conventionally, the laminated material used for the tubular body of the tubular container has excellent gas barrier properties to prevent the invasion of water vapor and oxygen from the outside and to prevent the various components contained in the contents from escaping to the outside. An aluminum foil having the core layer is used, and a multilayer thermoplastic resin is laminated on both sides of the core layer. There are various types of laminated materials using an aluminum foil as a core material layer, for example, (1) (outside) polyethylene resin layer / adhesive layer / stretched film layer / print layer / adhesive layer / aluminum foil / Adhesive resin layer / polyethylene resin layer (inside), (2) (outside) polyethylene resin layer / adhesive layer / stretched film layer / print layer / adhesive layer / milky polyethylene resin layer / adhesive resin Layer / aluminum foil / adhesive resin layer / polyethylene resin layer (inside), (3) (outside) polyethylene resin layer / milky polyethylene resin layer / adhesive resin layer / aluminum foil / adhesive resin layer / polyethylene There is a resin layer (inside) configuration, etc. The configurations (1) and (2) are usually used for large lot products, and the configuration (3) is for small lot products. It is used. Further, those having the constitutions (1) and (2) are manufactured by a method in which another layer is laminated on both sides of a two-layer film in which a printed layer is laminated on the back surface of a stretched film in advance, and the printing method is a gravure printing method. In the case where a printed layer is provided on the structure of (3), an offset printing method and a silk screen printing method are used on the outer circumferential surface of the tubular body of the tubular container using the laminated material for the tubular body. It is manufactured by a method of providing a printing layer at the end by a printing method such as a transfer printing method. The printing layer is made up of characters and pictures such as product names, manufacturers, sellers, and symbols.
[0003]
[Problems to be solved by the invention]
However, in the case of the above configuration (1), the pattern or characters printed on the stretched film layer is difficult to see because there is no milky polyethylene resin layer. It is necessary to print a base area with a white ink on a near area, and it is necessary to thicken a white ink film in order to enhance the concealment of white, which has led to an increase in material costs. In addition, there are many laminating steps in each of the configurations (1), (2) and (3), and the defects generated in each step are added up, the final good product yield becomes very poor, and the lamination is performed to improve the yield. It was necessary to simplify the process.
[0004]
An object of the present invention is to provide a laminated material having a white resin layer having good white concealing properties, strong adhesion to a core material layer made of aluminum foil, and excellent extrusion processability in a laminated material used for a tubular container. An object of the present invention is to provide a laminated tube container using a material and a laminated material thereof for a cylindrical body.
[0005]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention is characterized in that at least a surface resin layer, a white mixed resin layer, a core material layer made of aluminum foil, an adhesive resin layer, and a back resin layer are laminated, and the white mixed resin layer is A laminated material comprising a mixed resin kneaded in a mixing ratio of 3 to 8 parts by weight of titanium oxide with respect to 100 parts by weight of an ionomer resin.
[0006]
The invention according to a second aspect of the present invention is the laminated packaging material according to the first aspect, wherein the white mixed resin layer is laminated by a melt extrusion lamination method.
[0007]
The invention according to claim 3 of the present invention is that the surface resin layer as the outermost layer and the rear surface resin layer as the innermost layer at both ends of the laminated material according to claim 1 or 2 are overlapped to form a cylindrical shape, A laminated tube container characterized in that the overlapped portion is heat-fused to form a tubular body, and a shoulder and a mouth are provided at one opening of the tubular body. .
[0008]
[Action]
According to the present invention, at least a surface resin layer, a white mixed resin layer, a core material layer made of aluminum foil, an adhesive resin layer, and a back resin layer are laminated, and the white mixed resin layer is composed of 100 parts by weight of the ionomer resin. It is made of a mixed resin kneaded in a mixing ratio of 3 to 8 parts by weight of titanium oxide, and is laminated by a melt extrusion lamination method, so that the extrusion processing is performed favorably, and the core material layer made of aluminum foil is Since the adhesive is strong and has excellent white hiding properties, the lamination process can be simplified, and the yield of final non-defective products can be improved. Further, in the laminated tube container using the laminated material for the cylindrical body, the design, characters, and the like provided on the outer circumference of the cylindrical body can be clearly recognized, and the commercial value is also improved.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The laminated material of the present invention and a laminated tube container using the laminated material for a cylindrical body will be described in detail below according to embodiments.
[0010]
FIG. 1A is a side sectional view of a laminated material according to an embodiment of the present invention, and a laminated material (10) has a surface resin layer (3), a white mixed resin layer (2), The core material layer (1), the adhesive resin layer (4), and the back surface resin layer (5) are laminated, and (b) is a side sectional view of the laminated material of another embodiment. (11) is a surface resin layer (3), an adhesive layer (9), a plastic film layer (6), a printing layer (7), an adhesive layer (8), a white mixed resin layer ( 2), a core material layer (1), an adhesive resin layer (4), and a back surface resin layer (5).
[0011]
The laminated material (10) having the configuration (a) is often used for small lot products, and the laminated material (11) having the configuration (b) is often used for large lot products.
[0012]
An aluminum foil having a thickness of 7 to 30 μm is used for the core material layer (1).
[0013]
The white mixed resin layer (2) has a blending ratio of 3 to 8 parts by weight of titanium oxide to 100 parts by weight of a thermoplastic resin obtained by partially cross-linking a copolymer of ethylene and methacrylic acid with metal ions such as sodium and zinc. Since it is made of a mixed resin kneaded in the above, the extruding suitability is excellent, the adhesion to the core material layer is strong, and the white concealing property is also excellent. The ionomer resin of the present invention refers to the above-mentioned thermoplastic resin. If the mixing amount of titanium oxide is less than 3 parts by weight, the white concealing property becomes insufficient, and if it exceeds 8 parts by weight, the workability of the mixed resin is deteriorated, and the adhesive strength between the core material layer and the surface resin layer. Is not good because it becomes weak. A resin having a carboxyl group in a polymer is used as a resin having good adhesiveness to an aluminum foil, and the same blending ratio with a commonly used ethylene / acrylic acid copolymer resin or ethylene / methacrylic acid copolymer resin is used. When using a mixed resin mixed with titanium oxide, the titanium oxide reacts with the carboxyl group in the polymer during the extrusion process, and the extruded resin becomes a gel state, and the film forming property is extremely poor, and processing is difficult. By using the ionomer resin of the present invention, even if it has a carboxyl group in the polymer, it is cross-linked with metal ions, so that the workability during extrusion is good and the adhesive strength with the core material layer is also high. It is strong and has excellent white hiding properties.
[0014]
The surface resin layer (3) is not particularly limited as long as it is a polyolefin resin, but is preferably an ethylene resin such as a low-density polyethylene resin, a medium-density polyethylene resin, a high-density polyethylene resin, or a linear low-density polyethylene resin. Films of these resins may be used. The thickness is preferably from 10 to 150 μm.
[0015]
The adhesive resin (4) is preferably a copolymer type adhesive resin that firmly adheres to the aluminum foil used for the core layer without using an adhesive, and is preferably an ethylene / ethyl acrylate copolymer (EEA) resin. Ethylene / acrylic acid copolymer (EAA) resin, ethylene / methacrylic acid copolymer (EMAA) resin, ethylene / methyl methacrylate copolymer (EMMA) and the like are used. Lamination is performed by a known melt extrusion lamination method. The thickness is preferably from 10 to 35 μm.
[0016]
The back surface resin layer (5) is not particularly limited as long as it is a polyolefin resin, but is a low density polyethylene resin, a linear low density polyethylene resin, a medium density polyethylene resin, a high density polyethylene resin, an ethylene / vinyl acetate copolymer. An ethylene-based resin such as a resin is preferable in terms of adhesiveness with the adhesive resin layer (4). Films of these resins may be used. In the laminating method, the various resins are laminated by a known melt extrusion lamination method. The thickness is appropriately selected, but a thickness of about 20 to 35 μm is used.
[0017]
The plastic film layer (6) is preferably a stretched film, and a biaxially stretched polyester film, a biaxially stretched nylon film, a biaxially stretched polypropylene film, or the like is used.
[0018]
The printing layer (7) is laminated by a known printing method using a polyamide-based ink, a nitrified cotton-based ink, a polyvinyl chloride-based ink, a polyester-based ink, a polyurethane-based ink, or the like.
[0019]
A polyurethane adhesive is mainly used for the adhesive layers (8, 9), and the coating amount is preferably in the range of 1 to 5 g / m 2 (dry state).
[0020]
FIG. 2 is a cross-sectional view of a laminated tube container according to an embodiment using the laminated material of the present invention in a cylindrical body. The laminated tube container (20) is made of a laminated material (10) and has outermost layers at both ends. The top surface resin layer (3) and the innermost back surface resin layer (8) are overlapped to form a tubular shape, and the overlapped portion is heat-sealed to provide a heat-sealed portion (21a) to provide a cylindrical body portion (21). ), A shoulder (22) and a mouth (23) are provided in one opening (21b) of the cylindrical body (21), and an opening ( 21c). The shoulder (22) and the mouth (23) are integrally formed using a milky white polyethylene resin or the like.
[0021]
Although not shown, when filling and sealing the contents in the laminated tube container of the present invention, for example, the mouth portion (23) of the laminated tube container (20) is sealed with a lid material such as aluminum foil and the like. After the cap is provided, the content is filled from the opening (21c), and a heat-sealed portion is provided in the opening (21c).
[0022]
【Example】
The laminated material of the present invention will be described in detail with reference to specific examples, but the present invention is not limited to the examples.
[0023]
<Example 1>
An aluminum foil having a thickness of 12 μm is used for the core layer (1), and an ionomer resin (trade name: Himilan H1652) is used as a white mixed resin layer (2) on one surface of the aluminum foil. ) 100 parts by weight of titanium oxide were mixed at a mixing ratio of 7 parts by weight, and the kneaded white mixed resin was extruded and laminated at a resin temperature of 280 ° C. to a thickness of 45 μm, and a surface resin layer (3) was formed thereon. Was laminated with a 125 μm thick linear low-density polyethylene film (Tamapoly Co., Ltd., trade name: T2E153BC). Subsequently, a 30 μm-thick EMAA resin (Mitsui DuPont Polychemical Co., Ltd., trade name: Nuclell N1108C) is laminated on the other surface of the aluminum foil as an adhesive resin layer (4), and the backside resin is formed thereon. As the layer (5), a linear low-density polyethylene film (Tamapoly Co., Ltd., trade name: T2E155BC) having a thickness of 60 μm was laminated to prepare a laminated material of the present invention.
[0024]
<Comparative Example 1>
As a resin for the white mixed resin layer, a mixed resin obtained by mixing and kneading 7 parts by weight of titanium oxide with respect to 100 parts by weight of an EAA resin (Nippon Polychem Co., Ltd., trade name: Yucalon A221MX) was used. A laminated material for comparison was prepared in the same manner as in Example 1.
[0025]
[Table 1]
Figure 2004167975
[0026]
From the results in Table 1, it was found that the laminated material of Example 1 had good film-forming properties during extrusion of the mixed resin used for the white mixed resin layer, strong adhesion to the aluminum foil, and excellent white concealment. . In the laminated material of Comparative Example 1, the mixed resin used for the white mixed resin layer did not have good film-forming properties at the time of extrusion, and thus had poor adhesion to aluminum foil and poor white concealability.
[0027]
【The invention's effect】
The laminated material of the present invention has at least a surface resin layer, a white mixed resin layer, a core material layer made of aluminum foil, an adhesive resin layer, and a back resin layer which are laminated, and the white mixed resin layer has an ionomer resin weight of 100%. Parts of titanium oxide in a mixing ratio of 1 to 7 parts by weight per part, the workability is good, the adhesion to the core material layer is strong, and the white opacity is excellent. I have. Therefore, the efficiency of the lamination process can be improved, and the yield of final non-defective products can be improved. Further, in the case of a laminated tube container using this laminated material for the cylindrical body, the picture such as the color provided on the outer circumference of the body looks beautiful, and the characters and symbols of various displays can be easily read.
[Brief description of the drawings]
FIG. 1 (a) is a side sectional view of a laminated material according to one embodiment of the present invention, and FIG. 1 (b) is a side sectional view of a laminated material according to another embodiment.
FIG. 2 is a cross-sectional view of a laminated tube container of one embodiment in which the laminated material of the present invention is used for a cylindrical body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Core material layer 2 ... White mixed resin layer 3 ... Surface resin layer 4 ... Adhesive resin layer 5 ... Backside resin layer 6 ... Plastic film layer 7 ... Printing layers 8, 9 ... Adhesive layers 10, 11 ... Laminated material 20 ... Laminated tube container 21 ... Cylindrical body 21a ... Heat fusion parts 21b and 21c ... Opening 22 ... Shoulder 23 ... Mouth

Claims (3)

少なくとも、表面樹脂層、白色混合樹脂層、アルミニウム箔からなる芯材層、接着性樹脂層、裏面樹脂層が積層されており、該白色混合樹脂層がアイオノマー樹脂100重量部に対し酸化チタン3〜8重量部の配合割合で混練した混合樹脂からなることを特徴とする積層材料。At least a surface resin layer, a white mixed resin layer, a core layer made of aluminum foil, an adhesive resin layer, and a back resin layer are laminated, and the white mixed resin layer is formed of titanium oxide 3 to 100 parts by weight based on the ionomer resin. A laminated material comprising a mixed resin kneaded at a blending ratio of 8 parts by weight. 前記白色混合樹脂層が溶融押出ラミネート法で積層されていることを特徴とする請求項1記載の積層材料。The laminated material according to claim 1, wherein the white mixed resin layer is laminated by a melt extrusion lamination method. 請求項1又は請求項2記載の積層材料の両端部の最外層である表面樹脂層と最内層である裏面樹脂層を重ね合わせて筒状にし、重ね合わせた部分を熱融着して筒状胴部を形成し、該筒状胴部の一方の開口部に肩部、口部を設けたものからなることを特徴とするラミネートチューブ容器。The outermost surface resin layer at both ends of the laminated material according to claim 1 or 2, and the innermost rear surface resin layer are overlapped to form a cylinder, and the overlapped portion is thermally fused to form a cylinder. A laminated tube container having a body formed with a shoulder and a mouth provided at one opening of the cylindrical body.
JP2002339117A 2002-11-22 2002-11-22 Lamination material and laminated tube container Pending JP2004167975A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100614186B1 (en) * 2005-12-22 2006-08-22 권혁탁 Antibiotic container
JP2006264005A (en) * 2005-03-23 2006-10-05 Daiwa Can Co Ltd Manufacturing method of laminated tube container
KR100922323B1 (en) * 2007-06-29 2009-10-28 한신화성(주) Laminated sheet for flexible tube and method of manufacturing the same
JP2012131536A (en) * 2010-12-22 2012-07-12 Kansai Tube Kk Material roll for passage closing material for laminate tube container and laminate tube product with passage closing material
JP2017197219A (en) * 2016-04-27 2017-11-02 凸版印刷株式会社 Lid material, packaging container and manufacturing method for lid material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006264005A (en) * 2005-03-23 2006-10-05 Daiwa Can Co Ltd Manufacturing method of laminated tube container
KR100614186B1 (en) * 2005-12-22 2006-08-22 권혁탁 Antibiotic container
KR100922323B1 (en) * 2007-06-29 2009-10-28 한신화성(주) Laminated sheet for flexible tube and method of manufacturing the same
JP2012131536A (en) * 2010-12-22 2012-07-12 Kansai Tube Kk Material roll for passage closing material for laminate tube container and laminate tube product with passage closing material
JP2017197219A (en) * 2016-04-27 2017-11-02 凸版印刷株式会社 Lid material, packaging container and manufacturing method for lid material

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