JP2003261172A - Shrink label with anti-hot-adhesion property - Google Patents

Shrink label with anti-hot-adhesion property

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Publication number
JP2003261172A
JP2003261172A JP2002061481A JP2002061481A JP2003261172A JP 2003261172 A JP2003261172 A JP 2003261172A JP 2002061481 A JP2002061481 A JP 2002061481A JP 2002061481 A JP2002061481 A JP 2002061481A JP 2003261172 A JP2003261172 A JP 2003261172A
Authority
JP
Japan
Prior art keywords
hot
shrink label
shrink
adhesion preventing
thermal adhesion
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.)
Pending
Application number
JP2002061481A
Other languages
Japanese (ja)
Inventor
Kenji Ogawara
賢次 小河原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP2002061481A priority Critical patent/JP2003261172A/en
Publication of JP2003261172A publication Critical patent/JP2003261172A/en
Pending legal-status Critical Current

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  • Packages (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shrink label with anti-hot-adhesion properties with which shrink labels do not artificially hot-adhere to each other when bottles filled with contents in a hot state with the label wound around on a bottle body are in tight contact in carrying or selling articles filled with the contents in a hot state. <P>SOLUTION: The shrink label comprises a base layer (1a) and an anti-hot- adhesion layer (1b) consisting of coating flux comprising polyethylene wax with a melting point of 90 to 140°C and silica mixed into an acrylic based resin with a glass transition point of 65 to 70°C, which is stacked on one of surfaces of the base layer. A surface of the anti-hot-adhesion layer (1b) is made of a laminate material having an uneven surface. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、プラスチックボト
ル、ガラスボトル等に用いるシュリンクラベルに関する
ものである。 【0002】 【従来の技術】従来、プラスチックボトル、ガラスボト
ル等に使用されていたシュリンクラベルは基材に塩化ビ
ニルフィルムが一般的に使用されていたが、近年の地球
環境問題、特にダイオキシン問題から塩素を含まない樹
脂フィルムが代替えフィルムとして使用されてきてお
り、特に、ポリエステルフィルムあるいはポリスチレン
フィルムを基材としたシュリンクラベルが多く使用され
ている。 【0003】 【発明が解決しようとする課題】しかしながら、何も表
面加工していないシュリンクラベルをボトル本体に巻き
付けたボトルに高速の生産ラインで内容物を充填温度8
0〜90℃で充填し、口部をキャッピングし、コンベア
ーなどで連続して搬送する時にボトルが密着し、ボトル
本体に巻き付けたシュリンクラベル同士が擬似的に熱接
着してしまう等の弊害が生じていた。さらに、自動販売
機でホットな状態で販売する時にも、前記と同様にボト
ルが密着し、ボトル本体に巻き付けたシュリンクラベル
同士が擬似的に熱接着し、取り出す時にスムーズに出て
こない等の問題が生じていた。 【0004】本発明の課題は、内容物をホット充填し、
搬送する時や内容物充填商品をホットな状態で販売する
場合に、シュリンクラベルをボトル本体に巻き付けたボ
トルが密着した時にシュリンクラベル同士が擬似的に熱
接着しない熱接着防止性を有するシュリンクラベルを提
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、基材層の一方の面に、ガラス転移点が65〜7
0℃のアクリル系樹脂に融点が90〜140℃のポリエ
チレンワックス及びシリカを混合したコート剤からなる
熱接着防止層を積層しており、該熱接着防止層の表面が
凹凸状になっている積層材からなることを特徴とする熱
接着防止性を有するシュリンクラベルである。 【0006】 【発明の実施の形態】本発明の熱接着防止性を有するシ
ュリンクラベルを、実施の形態に沿って以下に詳細に説
明する。 【0007】図1は本発明の熱接着防止性を有するシュ
リンクラベル(1)の側断面図であり、基材層(1a)
の一方の面に熱接着防止層(1b)が積層されており、
その熱接着防止層(1b)の表面を凹凸状にしている。
図2(a)はシュリンクラベル(1)の熱接着防止層
(1b)面を外側にしてボトル本体(2)に巻き付けた
二本のボトルを密着面(3)で密着させた状態を示す図
であり、(b)はシュリンクラベル(1)をボトル本体
(2)に巻き付けたボトルの胴部(A)の側断面図であ
り、ボトル本体(2)にシュリンクラベル(1)の熱接
着防止層(1b)を外側にして巻き付けた状態を示す図
である。 【0008】前記基材層(1a)のいずれか一方の片面
に印刷層を設けても良い。 【0009】前記基材層(1a)としては、横一軸収縮
ポリエステル樹脂フィルム、横一軸収縮ポリスチレン樹
脂フィルムなどを使用する。フィルム厚みとしては30
〜80μmの範囲のものが使用できる。 【0010】前記熱接着防止層(1b)に使用するコー
ト剤は、ガラス転移点が65〜70℃のアクリル系樹脂
からなる主剤に、融点が90〜140℃のポリエチレン
ワックス及びシリカを配合した混合物からなっている。
シリカの粒径は8〜10μmの範囲のものが好ましい。
配合するポリエチレンワックス及びシリカは耐熱性付
与、耐摩耗性付与、滑り性向上の為に添加する。前記ポ
リエチレンワックス及びシリカの配合量は主剤となる樹
脂100重量部に対しそれぞれ0.1〜1.0重量部程
度が好ましい。主剤であるアクリル系樹脂のガラス転移
点が65℃未満であると擬似接着し易くなり良くない。
さらに、ポリエチレンワックスの融点が90℃未満であ
ると耐熱性が低下し良くない。シリカの粒径が8μm未
満であると耐摩耗性、滑り性が低下し良くない。前記混
合物にセルロース系樹脂をさらに配合しても良い。 【0011】さらに、前記熱接着防止層(1b)の表面
を凹凸状に調整することが必要である。前記粒径及び配
合量のシリカをコート剤中に配合することにより、コー
ト表面を凹凸状にすることができる。コート表面が凹凸
になることにより、本発明のシュリンクラベルをボトル
本体に巻き付けたボトルが密着しても、ラベル同士がよ
り擬似接着し難くなる。表面凹凸の高さを0.1〜5μ
mにすることが好ましい。 【0012】前記熱接着防止層(1b)の積層方法は、
グラビアコーティング法、ロールコーティング法、リバ
ースロールコーティング法、バーコーティング法等の方
法でコーテイングする。塗布量は0.8〜1.8g/m
2(乾燥状態)である。 【0013】 【実施例】本発明の熱接着防止性を有するシュリンクラ
ベルを具体的な実施例を挙げて更に説明する。本発明
は、これらの実施例に限定されるものではない。 【0014】〈実施例1〉基材層(1a)として使用し
た厚さ50μmの横一軸収縮ポリエステルフィルムの片
面に、ガラス転移点が65℃のアクリル樹脂20重量
%、融点が100℃のポリエチレンワックス0.1重量
%、粒径が10μmのシリカ0.1重量%を混合し、主
溶剤としてトルエンを用いて溶解、分散させた総固形分
20.2重量%のコート剤をグラビアコーティング機で
塗布量0.9g/m2(乾燥状態)になるようにコート
し、表面を凹凸状にした積層材を作成し、その積層材を
幅308mm×長さ85mmのサイズにスリット、切断
し、本発明の熱接着防止性を有するシュリンクラベルを
得た。 【0015】〈実施例2〉基材層(1a)として使用し
た厚さ60μmの横一軸収縮ポリエステルフィルムの片
面に、ガラス転移点が70℃のアクリル樹脂20重量
%、融点が120℃のポリエチレンワックス0.1重量
%、粒径が8μmのシリカ0.1重量%を混合し、主溶
剤としてトルエンを用いて溶解、分散させた総固形分2
0.2重量%のコート剤をグラビアコーティング機で塗
布量0.9g/m2(乾燥状態)になるようにコート
し、表面を凹凸状にした積層材を作成し、その積層材を
幅308mm×長さ85mmのサイズにスリット、切断
し、本発明の熱接着防止性を有するシュリンクラベルを
得た。 【0016】〈実施例3〉実施例1において、基材層
(1a)として厚さ60μmの横一軸収縮ポリスチレン
フィルムを使用した以外は、同様にして本発明の熱接着
防止性を有するシュリンクラベルを得た。 【0017】〈比較例1〉表面加工をしていない厚さ5
0μmの横一軸収縮ポリエステルフィルムを用いて、幅
308mm×長さ85mmのサイズにスリット、切断
し、比較用のシュリンクラベルを得た。 【0018】〈評価〉実施例1〜3及び比較例1のシュ
リンクラベルを用いて、容量1000mlのポリエステ
ルボトル本体に巻き付けたボトルに、89℃の温水を充
填したものを4本作成し、充填直後に各々を横にしてラ
ベルが密着するように重ねて合わせて、30分放置後に
ボトル本体に巻き付けたラベル同士の擬似的な熱接着の
有無を調査した。その結果を表1に示す。 【0019】 【表1】 【0020】表1の結果から、実施例1〜3のシュリン
クラベルをボトル本体に巻き付けたものは全く擬似的な
熱接着がなかった。一方、比較例1のシュリンクラベル
をボトル本体に巻き付けたものは擬似的に熱接着し、引
き剥がす時に抵抗があり、引き剥がした後のラベル表面
は擬似接着の跡が残り、ザラザラと荒れていた。 【0021】 【発明の効果】本発明の熱接着防止性を有するシュリン
クラベルは、基材層の一方の面に、ガラス転移点が65
〜70℃のアクリル系樹脂に、融点が90〜140℃の
ポリエチレンワックス及びシリカを混合したコート剤か
らなる熱接着防止層を積層しており、さらに、その熱接
着防止層の表面を凹凸状に調整しているので、このシュ
リンクラベルをボトル本体に巻き付けたもの同士を80
〜90℃の雰囲気下で密着させても、ラベル同士が擬似
的に熱接着することがない。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shrink label used for a plastic bottle, a glass bottle and the like. 2. Description of the Related Art Conventionally, a vinyl chloride film is generally used as a base material for a shrink label used for a plastic bottle, a glass bottle, and the like. However, due to recent global environmental problems, particularly, dioxin problems. Resin films containing no chlorine have been used as substitute films, and in particular, shrink labels based on polyester films or polystyrene films have been widely used. [0003] However, the contents are filled on a high-speed production line around a bottle in which a shrink label without any surface treatment is wound around the bottle body.
When filling at 0-90 ° C, capping the mouth, and continuously transporting it on a conveyor or the like, the bottles adhere to each other, causing adverse effects such as the shrink labels wrapped around the bottle body being pseudo-thermally bonded to each other. I was Furthermore, even when selling in a hot state with a vending machine, the bottles adhere to each other in the same manner as described above, and the shrink labels wrapped around the bottle body are pseudo-heat bonded to each other, so that they do not come out smoothly when taken out. Had occurred. An object of the present invention is to hot-fill contents,
When transporting or selling hot goods, the shrink labels are wrapped around the bottle body. To provide. [0005] The invention according to claim 1 of the present invention is characterized in that one of the surfaces of the substrate layer has a glass transition point of 65-7.
A lamination in which a thermal adhesion preventing layer composed of a coating agent obtained by mixing polyethylene wax and silica having a melting point of 90 to 140 ° C. with an acrylic resin at 0 ° C. is laminated, and the surface of the thermal adhesion preventing layer has an uneven surface. It is a shrink label having a thermal adhesion preventing property, which is made of a material. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A shrink label having thermal adhesion preventing properties of the present invention will be described in detail below in accordance with embodiments. FIG. 1 is a side cross-sectional view of a shrink label (1) having an anti-heat-adhesion property of the present invention, and shows a substrate layer (1a).
A heat adhesion preventing layer (1b) is laminated on one surface of
The surface of the thermal adhesion preventing layer (1b) is made uneven.
FIG. 2A is a diagram showing a state in which two bottles wound around the bottle body (2) are adhered to each other with the contact surface (3) with the heat adhesion preventing layer (1b) of the shrink label (1) facing outward. (B) is a side sectional view of the body (A) of the bottle in which the shrink label (1) is wrapped around the bottle body (2), and prevents the shrink label (1) from being thermally bonded to the bottle body (2). It is a figure which shows the state which wound the layer (1b) outside. [0008] A printing layer may be provided on one side of any one of the substrate layers (1a). As the substrate layer (1a), a uniaxially contracted polyester resin film, a uniaxially contracted polystyrene resin film or the like is used. 30 for film thickness
Those having a range of up to 80 μm can be used. [0010] The coating agent used for the thermal adhesion preventing layer (1b) is a mixture of an acrylic resin having a glass transition point of 65 to 70 ° C, a polyethylene wax having a melting point of 90 to 140 ° C, and silica. Consists of
The silica preferably has a particle size in the range of 8 to 10 μm.
Polyethylene wax and silica to be added are added for imparting heat resistance, abrasion resistance and improving slipperiness. The mixing amount of the polyethylene wax and silica is preferably about 0.1 to 1.0 part by weight with respect to 100 parts by weight of the resin serving as the main agent. If the glass transition point of the acrylic resin as the main agent is less than 65 ° C., pseudo adhesion tends to occur, which is not good.
Further, if the melting point of the polyethylene wax is less than 90 ° C., the heat resistance is lowered, which is not good. If the particle size of the silica is less than 8 μm, the wear resistance and the slipperiness are deteriorated, which is not good. A cellulosic resin may be further added to the mixture. Further, it is necessary to adjust the surface of the thermal adhesion preventing layer (1b) to have irregularities. By blending the silica having the above-mentioned particle size and amount in the coating agent, the coated surface can be made uneven. Due to the uneven surface of the coat, even if the bottle in which the shrink label of the present invention is wound around the bottle body is in close contact, the labels are more difficult to pseudo-adhere. 0.1 to 5μ height of surface irregularities
m is preferable. The method for laminating the thermal adhesion preventing layer (1b) is as follows.
Coating is performed by a gravure coating method, a roll coating method, a reverse roll coating method, a bar coating method, or the like. The coating amount is 0.8 to 1.8 g / m
2 (dry state). EXAMPLES The shrink label of the present invention having thermal adhesion preventing properties will be further described with reference to specific examples. The present invention is not limited to these examples. Example 1 On one side of a 50 μm thick uniaxially shrinkable polyester film used as a base material layer (1a), 20% by weight of an acrylic resin having a glass transition point of 65 ° C. and polyethylene wax having a melting point of 100 ° C. 0.1% by weight of silica and 0.1% by weight of silica having a particle size of 10μm are mixed and dissolved and dispersed using toluene as a main solvent. A coating agent having a total solid content of 20.2% by weight is applied by a gravure coating machine. The coated material was coated so as to have an amount of 0.9 g / m 2 (in a dry state), a laminated material having an uneven surface was prepared, and the laminated material was slit and cut into a size of 308 mm in width × 85 mm in length. A shrink label having a heat adhesion preventing property was obtained. Example 2 On one side of a 60 μm thick uniaxially shrinkable polyester film used as a base material layer (1a), 20% by weight of an acrylic resin having a glass transition point of 70 ° C. and polyethylene wax having a melting point of 120 ° C. 0.1% by weight of silica and 0.1% by weight of silica having a particle size of 8 μm are mixed and dissolved and dispersed by using toluene as a main solvent to obtain a total solid content of 2%.
A coating material of 0.2% by weight was coated by a gravure coating machine so as to have an application amount of 0.9 g / m 2 (dry state), and a laminated material having an uneven surface was prepared, and the laminated material was 308 mm wide. X Slit to a size of 85 mm in length and cut to obtain a shrink label of the present invention having thermal adhesion prevention properties. <Example 3> A shrink label having thermal adhesion preventing properties of the present invention was prepared in the same manner as in Example 1, except that a 60 μm-thick uniaxially shrinkable polystyrene film was used as the base material layer (1a). Obtained. <Comparative Example 1> Thickness 5 without surface processing
Using a 0 μm horizontal uniaxially shrinkable polyester film, it was slit and cut into a size of 308 mm in width × 85 mm in length to obtain a shrink label for comparison. <Evaluation> Using the shrink labels of Examples 1 to 3 and Comparative Example 1, four bottles were prepared by filling hot water at 89 ° C. into a bottle wrapped around a polyester bottle having a capacity of 1000 ml. The labels were laid side by side so that the labels were in close contact with each other, and after standing for 30 minutes, the presence or absence of pseudo thermal adhesion between the labels wrapped around the bottle body was examined. Table 1 shows the results. [Table 1] From the results shown in Table 1, the shrink labels of Examples 1 to 3 wrapped around the bottle body did not have any pseudo thermal adhesion. On the other hand, the one in which the shrink label of Comparative Example 1 was wound around the bottle body was pseudo-thermally bonded and had resistance when peeled off, and the label surface after peeling was left with a mark of pseudo-adhesion and rough and rough. . According to the shrink label of the present invention having an anti-heat-adhesion property, the glass transition point is 65 on one surface of the base material layer.
A thermal adhesion preventing layer composed of a coating agent obtained by mixing polyethylene wax and silica having a melting point of 90 to 140 ° C. is laminated on an acrylic resin of up to 70 ° C., and the surface of the thermal adhesion preventing layer is made uneven. Since the shrink label is wrapped around the bottle body,
Even when the labels are brought into close contact with each other in an atmosphere at a temperature of up to 90 ° C., the labels are not pseudo-heat bonded to each other.

【図面の簡単な説明】 【図1】本発明の熱接着防止性を有するシュリンクラベ
ルの断面図である。 【図2】(a)は本発明の熱接着防止性を有するシュリ
ンクラベルをボトル本体に巻き付けたもの同士を密着さ
せた状態を示す図であり、(b)はシュリンクラベルを
ボトル本体に巻き付けたボトルの胴部Aの側断面図であ
る。 【符号の説明】 1…シュリンクラベル 1a…基材層 1b…熱接着防止層 2…ボトル本体 3…ボトル密着面
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a shrink label having a thermal adhesion preventing property of the present invention. FIG. 2 (a) is a view showing a state in which a shrink label having thermal adhesion preventing properties of the present invention wound around a bottle body is brought into close contact with each other, and FIG. 2 (b) is a view showing a shrink label wound around the bottle body. It is a side sectional view of trunk part A of a bottle. [Explanation of Signs] 1 ... Shrink label 1a ... Base layer 1b ... Thermal adhesion preventing layer 2 ... Bottle body 3 ... Bottle contact surface

Claims (1)

【特許請求の範囲】 【請求項1】基材層の一方の面に、ガラス転移点が65
〜70℃のアクリル系樹脂に融点が90〜140℃のポ
リエチレンワックス及びシリカを混合したコート剤から
なる熱接着防止層を積層しており、該熱接着防止層の表
面が凹凸状になっている積層材からなることを特徴とす
る熱接着防止性を有するシュリンクラベル。
Claims: 1. A glass transition point of 65 is provided on one surface of a base material layer.
A thermal adhesion preventing layer made of a coating agent in which a melting point of 90 to 140 ° C. is mixed with polyethylene wax and silica is laminated on an acrylic resin of up to 70 ° C., and the surface of the thermal adhesion preventing layer is uneven. A shrink label having a thermal adhesion preventing property, comprising a laminated material.
JP2002061481A 2002-03-07 2002-03-07 Shrink label with anti-hot-adhesion property Pending JP2003261172A (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
JP2003261172A true JP2003261172A (en) 2003-09-16

Family

ID=28670343

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Country Status (1)

Country Link
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005199650A (en) * 2004-01-19 2005-07-28 Mitsubishi Plastics Ind Ltd Heat shrinkable polyolefin-based laminated film
JP2005266747A (en) * 2004-02-17 2005-09-29 Fuji Seal International Inc Coating agent improved in heat resistance and slidability, plastic label and labeled container
JP2005343527A (en) * 2004-06-04 2005-12-15 Nihon Tetra Pak Kk Packaging container and method of its production
JP2006337933A (en) * 2005-06-06 2006-12-14 Fuji Seal International Inc Plastic label and labeled container
JP2006337932A (en) * 2005-06-06 2006-12-14 Fuji Seal International Inc Plastic label and container with label
JP2013103719A (en) * 2011-11-10 2013-05-30 Showa Denko Packaging Co Ltd Content anti-sticking lid material and method of manufacturing the same
JP2013189238A (en) * 2012-03-15 2013-09-26 Toppan Printing Co Ltd Cover material and method of manufacturing cover material

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005199650A (en) * 2004-01-19 2005-07-28 Mitsubishi Plastics Ind Ltd Heat shrinkable polyolefin-based laminated film
JP2005266747A (en) * 2004-02-17 2005-09-29 Fuji Seal International Inc Coating agent improved in heat resistance and slidability, plastic label and labeled container
JP4578177B2 (en) * 2004-02-17 2010-11-10 株式会社フジシールインターナショナル Coating agent, plastic label and labeled container with excellent heat resistance and slipperiness
JP2005343527A (en) * 2004-06-04 2005-12-15 Nihon Tetra Pak Kk Packaging container and method of its production
JP2006337933A (en) * 2005-06-06 2006-12-14 Fuji Seal International Inc Plastic label and labeled container
JP2006337932A (en) * 2005-06-06 2006-12-14 Fuji Seal International Inc Plastic label and container with label
JP4644041B2 (en) * 2005-06-06 2011-03-02 株式会社フジシールインターナショナル Plastic labels and labeled containers
JP4684750B2 (en) * 2005-06-06 2011-05-18 株式会社フジシールインターナショナル Plastic labels and labeled containers
JP2013103719A (en) * 2011-11-10 2013-05-30 Showa Denko Packaging Co Ltd Content anti-sticking lid material and method of manufacturing the same
JP2013189238A (en) * 2012-03-15 2013-09-26 Toppan Printing Co Ltd Cover material and method of manufacturing cover material

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