JP5167588B2 - Easy peelable label - Google Patents
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- JP5167588B2 JP5167588B2 JP2006024221A JP2006024221A JP5167588B2 JP 5167588 B2 JP5167588 B2 JP 5167588B2 JP 2006024221 A JP2006024221 A JP 2006024221A JP 2006024221 A JP2006024221 A JP 2006024221A JP 5167588 B2 JP5167588 B2 JP 5167588B2
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Description
本発明は、紙層を基材層とするラベルを貼着した容器から剥離するときに、ラベルが層間剥離することなく容器から剥離する易剥離性ラベルに関するものである。 The present invention relates to an easily peelable label that peels from a container without delamination when peeling from a container having a paper layer as a base material layer.
従来、紙層を基材層とするラベルとしては、例えば、紙層／接着剤層構成で接着剤層が凝集剥離タイプのもの、紙層／接着剤層構成で接着剤層が容器界面剥離タイプのもの、紙層／延伸フィルム層／接着剤層構成で接着剤層が容器界面剥離タイプのものなどが使用されていた。 Conventionally, as a label using a paper layer as a base material layer, for example, a paper layer / adhesive layer configuration with an adhesive layer having a cohesive release type, and a paper layer / adhesive layer configuration with an adhesive layer having a container interface release type And those having a paper layer / stretched film layer / adhesive layer configuration and an adhesive layer having a container interface peeling type have been used.
しかしながら、紙層を基材層とする従来のラベルは、容器／ラベル間の接着強度の管理が難しく紙層中で層間剥離することがあった。また、上述した紙層／接着剤層構成で接着剤層が凝集剥離タイプのものは、接着剤が容器面に残ってしまうことがあり、紙層／接着剤層構成で接着剤層が容器界面剥離タイプのものは、接着強度の制御が難しく、紙層／延伸フィルム層／接着剤層構成で接着剤層が容器界面剥離タイプのものは、紙層中の層間剥離はしにくいがコストが高くなった。 However, in the conventional label using a paper layer as a base material layer, it is difficult to manage the adhesive strength between the container and the label, and the delamination may occur in the paper layer. In the case of the above-mentioned paper layer / adhesive layer configuration with the adhesive layer being a cohesive peeling type, the adhesive may remain on the container surface, and the paper layer / adhesive layer configuration may cause the adhesive layer to be at the container interface. The peel-off type is difficult to control the adhesive strength, and the paper layer / stretched film layer / adhesive layer configuration with the adhesive layer being the container interface peel-off type is difficult to delaminate in the paper layer but is expensive. became.
本発明は、上述の従来の紙層を基材層とするラベルの問題点を解決したものであり、ラベルを貼着した容器から剥離するときに、ラベルが層間剥離することなく容器から容易に剥離する易剥離性ラベルを提供するものである。 The present invention solves the problem of the label using the above-described conventional paper layer as a base material layer. When the label is peeled off from the container to which the label is attached, the label can be easily removed from the container without delamination. An easily peelable label that peels off is provided.
すなわち、本発明は、ガラス又はプラスチック製の容器に加熱貼着する紙層を基材層とする紙製ラベルにおいて、前記紙層の一方の面に、インキやニスによる印刷層が形成されており、前記紙層の他方の面に、アクリル系樹脂、ニトロセルローズ系樹脂、ウレタン樹脂、エーテル系樹脂、ポリエステル系樹脂のうちから選ばれるすくなくともひとつの樹脂を酢酸エチルまたはアルコールからなる溶媒に溶解した溶液の浸透補強塗工層を形成し、前記浸透補強塗工層を乾燥させると同時に、前記浸透補強塗工層を紙層にしみ込ませ層間強度を向上させ、前記紙層の前記浸透補強塗工層がしみ込んだ面に、感熱接着層が形成されており、前記紙製ラベルの層間剥離強度が、前記容器と前記紙製ラベルとの剥離強度より大きいことを特徴とする易剥離性ラベルである。 That is, the present invention provides a paper label to the paper layer to heat adhered to a glass or plastic container with a substrate layer, on one surface of the paper layer, the printing layer by the ink and varnish are formed , on the other surface of the paper layer, dissolved in a solvent consisting of acrylic resin, nitrocellulose-based resin, urethane resin, ether resin, at least one resin ethyl acetate or an alcohol selected from the group consisting of polyester resin solution the penetration reinforcement coating layer formed of the same time drying the osmotic reinforcing coating layer, the penetration reinforcement coating layer to improve the bond strength impregnated to the paper layer, the penetration reinforcement coating layer of the paper layer to the surface soaked, and the heat-sensitive adhesive layer is formed, an interlayer peeling strength of the paper made label, being greater than the peeling strength between the paper-made labels and the container Eki剥It is a gender label.
本発明の易剥離性ラベルは、表面に印刷層を形成した基材層である紙層の裏面に、樹脂を溶媒に溶解した溶液の浸透補強塗工層を形成し、この浸透補強塗工層を乾燥させると同時に、浸透補強塗工層を紙層にしみ込ませ層間強度を向上させており、また、容器とラベル間の剥離強度よりラベルの層間剥離強度が大きいため、ラベルを貼着した容器から剥離するときに、ラベルが層間剥離することなく容器から容易に剥離する。なお、浸透補強塗工層が紙層にしみ込むと層間強度を向上するのは、図２に示すように、紙層中のパルプ繊維（２００）とパルプ繊維とが、浸透補強塗工層中の樹脂により結着（２１０）するためである。 The easy peelable label of the present invention forms a penetration reinforcing coating layer of a solution obtained by dissolving a resin in a solvent on the back side of a paper layer which is a base material layer having a printed layer formed on the surface, and this penetration reinforcing coating layer At the same time, the permeation reinforcement coating layer is soaked into the paper layer to improve the interlayer strength. Also, the delamination strength of the label is greater than the delamination strength between the container and the label. When peeling from the label, the label is easily peeled from the container without delamination. In addition, when the penetration reinforcing coating layer soaks into the paper layer, the interlayer strength is improved because the pulp fibers (200) and the pulp fibers in the paper layer are in the penetration reinforcing coating layer as shown in FIG. This is because the resin is bound (210).
次に、本発明の易剥離性ラベルの実施の形態について、図を用いて詳細に説明する。 Next, an embodiment of the easily peelable label of the present invention will be described in detail with reference to the drawings.
本実施形態の易剥離性ラベルは、ガラスやプラスチック製の容器の外面に、加熱貼着する紙層を基材層とする紙製ラベルであって、図１（ａ）に示すように、基材層の紙層（１１０）の表面に、文字・絵柄を施すたのインキや表面を保護するためのニスにより印刷層
（１２０）を形成し、その紙層の裏面に、図１（ｂ）に示すように、樹脂を溶媒に溶解した溶液で浸透補強塗工層（１３０）を形成し、図１（ｃ）に示すように、この浸透補強塗工層を乾燥させると同時に、浸透補強塗工層（１３０）を紙層（１１０）にしみ込ませ層間強度を向上させ、図１（ｄ）に示すように、この浸透補強塗工層をしみ込んだ紙層（１１０＋１３０）の裏面に、感熱接着層（１４０）を形成するものである。なお、ラベルの層間剥離強度は、容器とラベル間の剥離強度より大きくするものである。
The easily peelable label of the present embodiment is a paper label having a paper layer to be heat bonded to the outer surface of a glass or plastic container, as shown in FIG. A printing layer (120) is formed on the surface of the paper layer (110) of the material layer with ink applied with characters and patterns and a varnish for protecting the surface, and on the back surface of the paper layer, FIG. As shown in FIG. 1, a penetration reinforcing coating layer (130) is formed with a solution in which a resin is dissolved in a solvent, and as shown in FIG. 1 (c), the penetration reinforcing coating layer is dried and at the same time, the penetration reinforcing coating layer is dried. The work layer (130) is soaked into the paper layer (110) to improve the interlayer strength, and as shown in FIG. 1 (d), the back surface of the paper layer (110 + 130) soaked with the penetration reinforcing coating layer is heat-sensitive bonded. The layer (140) is formed. Note that the delamination strength of the label is greater than the peel strength between the container and the label.
印刷層は、グラビア印刷法やオフセット印刷法により形成するが、その印刷層を形成するインキやニスは、その組成については特に限定するものではないが、ラベル裏面の感熱接着層がべたつき傾向にある場合には、ニスにシリカ、ワックス、アクリルビーズなどの物理的滑剤や化学的滑剤を添加してもよい。 The printing layer is formed by a gravure printing method or an offset printing method, but the ink and varnish forming the printing layer are not particularly limited in composition, but the heat-sensitive adhesive layer on the back side of the label tends to be sticky. In some cases, a physical or chemical lubricant such as silica, wax or acrylic beads may be added to the varnish.
紙層には、片アート紙、上質紙、アルミ蒸着紙又はアルミ箔ラミネート紙などが使用するものである。 For the paper layer, a piece of art paper, high-quality paper, aluminum vapor-deposited paper, aluminum foil laminated paper, or the like is used.
浸透補強塗工層は、紙層にしみ込んでしまうものであるが、樹脂としてはアクリル系樹脂、ニトロセルローズ系樹脂、ウレタン樹脂、エーテル系樹脂、ポリビニルアルコール、ポリエステル系樹脂などを使用するものである。溶剤としては、特に限定するものではないが、紙への浸透性が高い、例えば酢酸エチル、アルコールなどの溶剤が、紙層にしみ込み易いので望ましい。塗工方法としては、グラビアコート、コンマコート、ディッピングなどが用いられ特に規定するものではないが、グラビアコートであれば印刷インライン加工、または、エクストルーダーの場合には、樹脂押出し前にＡＣコートの際に塗工が可能であり、コストダウンが図れる。なお、紙層に塗工層がしみ込むと、紙のパルプ繊維の接点を樹脂が結着して補強することにより紙層間強度が向上する。 The penetration reinforcing coating layer penetrates into the paper layer, but as the resin, acrylic resin, nitrocellulose resin, urethane resin, ether resin, polyvinyl alcohol, polyester resin, etc. are used. . The solvent is not particularly limited, but a solvent having high permeability to paper, such as ethyl acetate and alcohol, is preferable because it easily penetrates into the paper layer. As the coating method, gravure coating, comma coating, dipping, etc. are used and are not particularly specified. However, in the case of gravure coating, in-line printing or in the case of extruder, AC coating is applied before resin extrusion. Coating is possible at the same time, and the cost can be reduced. When the coating layer penetrates into the paper layer, the strength of the paper interlayer is improved by the resin binding and reinforcing the contacts of the paper pulp fibers.
感熱接着層は、樹脂に可塑剤を混合させた感熱接着ニス、低融点樹脂（オレフィン系、ＥＶＡ系、ＥＡＡ系、ＥＭＡＡ系、ＰＡ系など）の押出し加工、または上記樹脂をフィルム化したものの貼り合わせ、さらには樹脂溶液（溶解性タイプ、エマルジョンタイプ、ディスパージョンタイプなど）の塗工、ホットメルトなどにより形成される。 The heat-sensitive adhesive layer is made of a heat-sensitive adhesive varnish in which a plasticizer is mixed with a resin, an extrusion process of a low melting point resin (olefin, EVA, EAA, EMAA, PA, etc.), or a film of the above resin Further, it is formed by coating a resin solution (dissolving type, emulsion type, dispersion type, etc.), hot melt or the like.
以下に、本発明の具体的実施例について説明する。 Specific examples of the present invention will be described below.
＜実施例１＞
坪量が７９．１ｇ／ｍ2 の片アート紙からなる紙層の表面に、インキ及びニスにより印刷層を形成し、この表面に印刷層を形成した紙層の裏面に、２液硬化型ポリウレタン系接着剤「三井武田ケミカル製タケラックＡ５１１（主剤）／Ａ１０（硬化剤）＝１０／１に配合したもの」を酢酸エチルで希釈し、塗工量５ｇ／ｍ2 （ｄｒｙ）でグラビアコーティングして浸透補強塗工層を形成し、この浸透補強塗工層を乾燥させると同時に、浸透補強塗工層を紙層にしみ込ませ、この浸透補強塗工層をしみ込んだ紙層の裏面に、ＥＶＡ系樹脂「三井デュポンケミカル製エバフレックス」をエクストルーダー加工して、２５μｍの膜厚の感熱接着層を形成したのち、所定寸法にスリットして実施例１のラベルを作製した。
<Example 1>
A two-component curable polyurethane is formed on the back side of the paper layer on which the printed layer is formed on the surface of the paper layer made of a piece of art paper having a basis weight of 79.1 g / m 2 by using ink and varnish. System adhesive “takerack made by Mitsui Takeda Chemical Takelac A511 (main agent) / A10 (curing agent) = 10/1” diluted with ethyl acetate and gravure coated with a coating amount of 5 g / m 2 (dry) The penetration reinforcing coating layer is formed, and at the same time, the penetration reinforcing coating layer is dried. At the same time, the penetration reinforcing coating layer is soaked into the paper layer. The resin “Evaflex manufactured by Mitsui DuPont Chemical” was processed by an extruder to form a heat-sensitive adhesive layer having a thickness of 25 μm, and then slit to a predetermined size to produce a label of Example 1.
＜実施例２＞
１０％ポリビニルアルコール「日本酢ビポバール：ＪＦ０４」水・エタノール溶液を用いて、塗工量５ｇ／ｍ2 （ｄｒｙ）でグラビアコーティングして浸透補強塗工層を形成した以外は、実施例１と同様にして、実施例２のラベルを作製した。
<Example 2>
Example 10 except that a penetration reinforcing coating layer was formed by gravure coating with a coating amount of 5 g / m 2 (dry) using a 10% polyvinyl alcohol “Nippon Vinegar Bipovar: JF04” water / ethanol solution. Thus, a label of Example 2 was produced.
以下に、本発明の比較例について説明する。 Below, the comparative example of this invention is demonstrated.
＜比較例１＞
表面に印刷層を形成した坪量が７９．１ｇ／ｍ2 の片アート紙からなる紙層の裏面に、２０μｍ厚の延伸ポリプロピレンフィルムをドライラミネートし、この延伸ポリプロピレンフィルムの裏面にアンカーコートを行い、実施例１と同様にＥＶＡ系樹脂「三井デュポンケミカル製エバフレックス」をエクストルーダー加工して、２５μｍの膜厚の感熱接着層を形成し、スリットして比較例１のラベルを作製した。
<Comparative Example 1>
A 20 μm-thick stretched polypropylene film is dry-laminated on the back side of a paper layer made of a piece of art paper having a basis weight of 79.1 g / m 2 with a printed layer formed on the surface, and an anchor coat is applied to the back side of the stretched polypropylene film. In the same manner as in Example 1, EVA resin “Evaflex made by Mitsui DuPont Chemical” was subjected to an extruder process to form a heat-sensitive adhesive layer having a thickness of 25 μm, and slitted to produce a label of Comparative Example 1.
＜比較例２＞
表面に印刷層を形成した坪量が７９．１ｇ／ｍ2 の片アート紙からなる紙層の裏面に、実施例１と同様にＥＶＡ系樹脂「三井デュポンケミカル製エバフレックス」をエクストルーダー加工して、２５μｍの膜厚の感熱接着層を形成し、スリットして比較例２のラベルを作製した。
<Comparative example 2>
The EVA resin “Evaflex made by Mitsui DuPont Chemical” was processed on the back side of the paper layer made of a piece of art paper having a basis weight of 79.1 g / m 2 with a printed layer formed on the surface in the same manner as in Example 1. Then, a heat-sensitive adhesive layer having a film thickness of 25 μm was formed and slit to produce a label of Comparative Example 2.
＜評 価＞
上述した実施例１、実施例２、比較例１及び比較例２の４種類のラベルについて、それぞれガラス瓶にラベラーにより貼着したのち、ラベルがガラス瓶から紙むけせずに容易に剥離できるかを確認した。このラベル剥離性評価結果を表１に示す。なお、ガラス瓶は、表面をホットエンドコート後、コールドコート（ポリオレフィン系樹脂コーティング）したものを用い、また、ラベラー条件は、ドラム温度１１０℃、ラインスピード１００ｂｐｍであった。
<Evaluation>
For each of the four types of labels of Example 1, Example 2, Comparative Example 1 and Comparative Example 2 described above, each label is attached to a glass bottle with a labeler, and then it is confirmed whether the label can be easily peeled from the glass bottle without peeling off the paper. did. The label peelability evaluation results are shown in Table 1. The glass bottle used was hot-end coated on the surface and then cold-coated (polyolefin resin coating), and the labeling conditions were a drum temperature of 110 ° C. and a line speed of 100 bpm.
１００……易剥離性ラベル
１１０……紙層
１２０……印刷層
１３０……浸透補強塗工層
１４０……感熱接着層
２００……パルプ繊維
２１０……樹脂で結着
100 …… Easily
Claims (1)
前記紙層の一方の面に、インキやニスによる印刷層が形成されており、
前記紙層の他方の面に、アクリル系樹脂、ニトロセルローズ系樹脂、ウレタン樹脂、エーテル系樹脂、ポリエステル系樹脂のうちから選ばれるすくなくともひとつの樹脂を酢酸エチルまたはアルコールからなる溶媒に溶解した溶液の浸透補強塗工層を形成し、前記浸透補強塗工層を乾燥させると同時に、前記浸透補強塗工層を紙層にしみ込ませ層間強度を向上させ、
前記紙層の前記浸透補強塗工層がしみ込んだ面に、感熱接着層が形成されており、
前記紙製ラベルの層間剥離強度が、前記容器と前記紙製ラベルとの剥離強度より大きいことを特徴とする易剥離性ラベル。 In a paper label whose base layer is a paper layer that is heat bonded to a glass or plastic container,
On one surface of the paper layer, and a printing layer by the ink and varnish are formed,
On the other surface of the paper layer, an acrylic resin, nitrocellulose-based resin, urethane resin, ether resin, at least one resin selected from among polyester resin solution in a solvent consisting of ethyl acetate or alcohol to form osmotic reinforcing coating layer, and at the same time drying the osmotic reinforcing coating layer, the penetration reinforcement coating layer to improve the bond strength impregnated to the paper layer,
A heat-sensitive adhesive layer is formed on the surface of the paper layer in which the penetration reinforcing coating layer is impregnated ,
Easily separable label, wherein the delamination strength of the paper made label is greater than the peel strength between the paper-made labels and the container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006024221A JP5167588B2 (en) | 2006-02-01 | 2006-02-01 | Easy peelable label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006024221A JP5167588B2 (en) | 2006-02-01 | 2006-02-01 | Easy peelable label |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007206306A JP2007206306A (en) | 2007-08-16 |
| JP5167588B2 true JP5167588B2 (en) | 2013-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006024221A Expired - Fee Related JP5167588B2 (en) | 2006-02-01 | 2006-02-01 | Easy peelable label |
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| JP (1) | JP5167588B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5426914B2 (en) * | 2009-04-08 | 2014-02-26 | リンテック株式会社 | Pseudo adhesive label |
| JP2011013395A (en) * | 2009-07-01 | 2011-01-20 | Dainippon Printing Co Ltd | Label |
| JP2023028610A (en) * | 2021-08-19 | 2023-03-03 | 共同印刷株式会社 | Tube container with peelable sheet |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6189279A (en) * | 1984-10-09 | 1986-05-07 | Nippon Kako Seishi Kk | Pressure-sensitive adhesive sheet for titled display label |
| JPH07216317A (en) * | 1994-02-07 | 1995-08-15 | Sekisui Chem Co Ltd | Pressure-sensitive adhesive tape |
| JPH1185033A (en) * | 1997-09-11 | 1999-03-30 | Dainippon Printing Co Ltd | Label |
| JP2000132108A (en) * | 1998-10-27 | 2000-05-12 | Nihon Tokkyo Kanri Co Ltd | Label for glass bottle to be recycled and method for sticking label onto glass bottle to be recycled |
| JP4552562B2 (en) * | 2004-08-24 | 2010-09-29 | 凸版印刷株式会社 | Thermal label |
| JP2006267990A (en) * | 2005-03-24 | 2006-10-05 | Kotobuki Seihan Printing Co Ltd | Re-removable paper label and container with re-removable paper label |
| JP5034223B2 (en) * | 2005-11-18 | 2012-09-26 | 凸版印刷株式会社 | Substrate to which a paper label is attached |
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2006
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| JP2007206306A (en) | 2007-08-16 |
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