JP5343406B2 - Easy adhesion polyester film - Google Patents
Easy adhesion polyester film Download PDFInfo
- Publication number
- JP5343406B2 JP5343406B2 JP2008142164A JP2008142164A JP5343406B2 JP 5343406 B2 JP5343406 B2 JP 5343406B2 JP 2008142164 A JP2008142164 A JP 2008142164A JP 2008142164 A JP2008142164 A JP 2008142164A JP 5343406 B2 JP5343406 B2 JP 5343406B2
- Authority
- JP
- Japan
- Prior art keywords
- polyester film
- layer
- receiving layer
- film
- card
- 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.)
- Expired - Fee Related
Links
Description
本発明は、印字・印刷・接着等の後加工が可能な易接着基材に関する。さらに詳しくは高湿熱易接着性、ＵＶ印刷適性、転写印字適性、隠蔽性等に優れるとともに、クッション性にも優れる易接着ポリエステルフィルムに関するものである。 The present invention relates to an easily-adhesive base material capable of post-processing such as printing, printing, and adhesion. More specifically, the present invention relates to an easily adhesive polyester film that is excellent in high-humidity heat-adhesive properties, UV printing suitability, transfer printing suitability, concealment properties, and the like, as well as cushioning properties.
印字・印刷用受容体として従来より紙支持体が支配的であったが、近年ポリエステルフィルムやポリプロピレンフィルム等のプラスチックフィルムが支持体として多く使用され始めている。特に、ポリエチレンテレフタレート（ＰＥＴ）フィルムに代表される二軸延伸ポリエステルフィルムは透明性、寸法安定性、機械的性質、電気的性質、耐薬品性等の性能に優れているため、磁気テープ、包装材料、電気絶縁材料、各種工程紙等の幅広い分野に利用されている。ポリエステルは上記のような優れた特性を有してはいるが、フィルム表面は高度に結晶配向しているため、各種塗料などに対する接着性に乏しく、フィルム表面に易接着処理を行う場合が多い。ポリエステルフィルムに易接着処理を付与する方法としては、コロナ処理、プラズマ処理、火炎処理等が上げられる（例えば特許文献１）が、これらの方法では経時的にその性能が低下する欠点がある。水系塗剤を付与することにより易接着性を付与する方法がある（例えば特許文献２）が、高温湿熱下での接着性、印字・印刷適性や寸法安定性、耐水性、機械的強度等は不十分である。 Conventionally, a paper support has been dominant as a printing / printing receiver, but in recent years, plastic films such as a polyester film and a polypropylene film have begun to be used as a support. In particular, biaxially stretched polyester film represented by polyethylene terephthalate (PET) film has excellent properties such as transparency, dimensional stability, mechanical properties, electrical properties, chemical resistance, etc. It is used in a wide range of fields such as electrical insulation materials and various process papers. Although polyester has the above-mentioned excellent characteristics, since the film surface is highly crystallographically oriented, it has poor adhesion to various paints and often undergoes easy adhesion treatment on the film surface. Corona treatment, plasma treatment, flame treatment, and the like can be given as methods for imparting easy adhesion treatment to the polyester film (for example, Patent Document 1). However, these methods have a drawback that the performance decreases with time. There is a method for imparting easy adhesion by applying a water-based coating (for example, Patent Document 2). However, adhesiveness under high-temperature wet heat, printing / printability, dimensional stability, water resistance, mechanical strength, etc. It is insufficient.
また、二軸延伸ＰＥＴフィルムは弾性率が大きく容易に変形しないため、ＩＣカードまたはＩＣタグの内部構造（ＩＣチップや回路など）から生じる凹凸を吸収することができず、ＩＣチップや回路の形状がＩＣカードの表面に浮き出るという問題があった（例えば特許文献３）。このような凹凸がＩＣカードの表面に存在すると摩擦により印刷面がかすれたり、なにかに引っかかって表層が剥がれたりするなど機能を損なう場合だけではなく、外観も好ましくない。
本発明の課題は上記した問題点を解決することにある。すなわち、本発明の目的は高温高湿熱下での接着性や印字・印刷性に優れるだけでなく、ＩＣタグの内部構造（ＩＣチップや回路など）から生じる凹凸を吸収する事のできる易接着ポリエステルフィルムを提供せんとするものである。 An object of the present invention is to solve the above-described problems. That is, the object of the present invention is not only excellent in adhesiveness and printing / printing property under high temperature and high humidity heat, but also easily adhesive polyester capable of absorbing irregularities caused by the internal structure (IC chip, circuit, etc.) of the IC tag. It is intended to provide a film.
上記した課題は、基材ポリエステルフィルムの両面に、変性ポリエステル樹脂からなる高分子結着剤及び架橋結合材を含む受容層が付与され、一方の受容層の表面に表面硬化層が設けられ、該硬化層が、（メタ）アクリロイルオキシ基を有する単量体の少なくとも一種と、エチレン不飽和２重結合を有する単量体の少なくとも一種とを混合した単量体混合物を構成成分として含み、該基材ポリエステルフィルムが空隙を有する層を少なくとも１層含むものであることを特徴とする易接着ポリエステルフィルムによって達成することができる。 The problem described above is that a receiving layer containing a polymer binder made of a modified polyester resin and a cross-linking material is provided on both surfaces of a base polyester film, and a surface hardened layer is provided on the surface of one receiving layer, The cured layer contains a monomer mixture in which at least one monomer having a (meth) acryloyloxy group and at least one monomer having an ethylenically unsaturated double bond are mixed as a constituent component, and the group The material polyester film can be achieved by an easily adhesive polyester film characterized by comprising at least one layer having voids.
本発明の易接着ポリエステルフィルムによれば、高温高湿熱下での接着性や印字・印刷適性に優れるだけでなく、優れたクッション性を有していることからＩＣチップ等の凹凸を良く吸収するため、ＩＣカードなどのカード類の外装材として好適に用いることができる。 According to the easily adhesive polyester film of the present invention, not only is it excellent in adhesiveness and printing / printing suitability under high temperature and high humidity heat, but also has excellent cushioning properties, so it absorbs unevenness such as IC chips well. Therefore, it can be suitably used as an exterior material for cards such as IC cards.
本発明の易接着ポリエステルフィルムは、基材ポリエステルフィルムの両面に変性ポリエステルフィルムからなる高分子結着剤及び架橋結合材を含む受容層が付与され、一方の受容層の表面に表面硬化層が設けられ、該硬化層が、（メタ）アクリロイルオキシ基を有する単量体の少なくとも一種と、エチレン不飽和２重結合を有する単量体の少なくとも一種とを混合した単量体混合物を構成成分として含み、該基材ポリエステルフィルムが空隙を有する層を少なくとも１層含むものであることを特徴とするものである。 The easy-adhesive polyester film of the present invention is provided with a receiving layer containing a polymer binder composed of a modified polyester film and a crosslinking agent on both sides of a base polyester film, and a surface hardened layer is provided on the surface of one receiving layer. The cured layer contains a monomer mixture in which at least one monomer having a (meth) acryloyloxy group and at least one monomer having an ethylenically unsaturated double bond are mixed as a constituent component. The base polyester film includes at least one layer having voids.
本発明にかかる基材ポリエステルフィルムは、ポリエステルからなるフィルムあればよい。例えば、ポリエチレンテレフタレート、ポリエチレンナフタレートからなるフィルムを使用することができる。それらは、他の各種フィルムの中でも寸法安定性、機械的性質、熱的性質等に優れているため好ましく用いられる。 The base polyester film according to the present invention may be a film made of polyester. For example, a film made of polyethylene terephthalate or polyethylene naphthalate can be used. They are preferably used because they are excellent in dimensional stability, mechanical properties, thermal properties and the like among other various films.
また、本発明にかかる基材ポリエステルフィルムは内部に空隙を有しているため、ＩＣタグ等から生じる凹凸を吸収できる。凹凸を吸収することにより、摩耗による部分的なかすれや剥がれが軽減できるだけではなく、外観も美麗なカードを作製する事ができる。基材ポリエステルフィルムには少なくとも空隙を有する層が１層含まれていればよく、具体的な層構成としては、空隙を有する層の単層構成、空隙を有する層の片面に空隙を有さない層を積層した２層構成、または空隙を有する層の両面に空隙を有さない層を積層した３層構成等が考えられる。特に、空隙を有する層の両面に空隙を有さない層を積層した３層構成をとると、生産性が上がるだけでなく機械特性も優れるため好ましい。 Moreover, since the base polyester film according to the present invention has voids therein, it can absorb irregularities caused by IC tags and the like. By absorbing irregularities, it is possible not only to reduce partial fading and peeling due to wear, but also to produce a card with a beautiful appearance. The base polyester film only needs to include at least one layer having voids, and the specific layer configuration includes a single-layer configuration of a layer having voids, and no voids on one side of the layer having voids. A two-layer structure in which layers are laminated, or a three-layer structure in which layers having no voids are laminated on both sides of a layer having voids are conceivable. In particular, a three-layer structure in which layers having no voids are laminated on both sides of a layer having voids is preferable because not only productivity is improved but also mechanical properties are excellent.
本発明にかかる基材ポリエステルフィルムは少なくとも１軸に延伸された基材であることが好ましい。本発明にかかる基材ポリエステルフィルムは無延伸でもよい。しかしながら、１軸以上に延伸されていると、機会特性に優れる耐屈曲性や寸法精度、弾性回復率を持つために折れ皺が入りにくくなると共に、厚み方向の気泡径が数μｍ以下になるために光を効果的に散乱し、隠蔽性に優れる。そのため１軸以上に延伸することが好ましい。 The substrate polyester film according to the present invention is preferably a substrate stretched at least uniaxially. The base polyester film according to the present invention may be unstretched. However, if it is stretched uniaxially or more, it has bending resistance, dimensional accuracy, and elastic recovery rate that are excellent in opportunity characteristics, so that it becomes difficult for creases to enter and the bubble diameter in the thickness direction becomes several μm or less. It effectively scatters light and has excellent concealment. Therefore, it is preferable to extend to one axis or more.
より好ましくは２軸に延伸されていることが好ましい。このように延伸されたポリエステルフィルムは機械特性に優れる耐屈曲性や、弾性回復率を持つために折れ皺が入りにくくなると共に、厚み方向の気泡径が数μｍ以下になるために光を効果的に散乱し、隠蔽性に優れたポリエステルフィルムとなる。 More preferably, it is preferably stretched biaxially. Polyester film stretched in this way has excellent bending resistance due to its excellent mechanical properties and elastic recovery rate, making it difficult for creases to enter and making the bubble diameter in the thickness direction several μm or less effective for light. It becomes a polyester film having excellent concealability.
本発明にかかる基材ポリエステルフィルムは、比重が０．１ｇ／ｃｍ３以上１．３ｇ／ｃｍ３以下であることが好ましい。より好ましくは、０．１５ｇ／ｃｍ３以上１．０ｇ／ｃｍ３以下である。さらに好ましくは、０．２ｇ／ｃｍ３以上０．８ｇ／ｃｍ３以下である。比重が０．１ｇ／ｃｍ３より低い場合には、気泡径が大きくなりすぎるため、度や機械強度が不十分になったり、折れ皺が入りやすくなることがある。また、比重が１．３ｇ／ｃｍ３より高い場合には、逆に気泡径が小さくなりすぎるため、白色度やクッション性が不十分となることがある。 The base polyester film according to the present invention preferably has a specific gravity of 0.1 g / cm 3 or more and 1.3 g / cm 3 or less. More preferably, it is 0.15 g / cm 3 or more and 1.0 g / cm 3 or less. More preferably, it is 0.2 g / cm 3 or more and 0.8 g / cm 3 or less. When the specific gravity is lower than 0.1 g / cm 3 , the bubble diameter becomes too large, so that the degree and mechanical strength may be insufficient or creases may easily occur. On the other hand, when the specific gravity is higher than 1.3 g / cm 3 , the bubble diameter becomes too small, and the whiteness and cushioning properties may be insufficient.
本発明にかかる基材ポリエステルフィルムは、クッション率が１５％以上４０％以下であることが好ましい。より好ましくは１５％以上３８％以下である。さらに好ましくは、２０％以上３５％以下である。クッション率が１５％より低い場合には、クッション性が不十分のため、ＩＣタグの内部構造（ＩＣチップや回路など）から生じる凹凸を吸収できなくなる場合がある。また、クッション率が４０％より大きい場合には、折れ皺が入りやすくなったり、基材の強度が不十分となり、カードに必要な堅牢度が得られなかったり、カード表面にボールペンなどの筆記用具で字句を記入した際に部分的な窪みを生じたりすることがある。 The base polyester film according to the present invention preferably has a cushion rate of 15% or more and 40% or less. More preferably, it is 15% or more and 38% or less. More preferably, it is 20% or more and 35% or less. When the cushion rate is lower than 15%, the cushioning property is insufficient, so that unevenness caused by the internal structure (IC chip, circuit, etc.) of the IC tag may not be absorbed. Also, if the cushion rate is greater than 40%, it becomes easy for creases to enter, the strength of the base material becomes insufficient, the fastness required for the card cannot be obtained, or a writing instrument such as a ballpoint pen on the card surface When you enter a lexical, you may have a partial dent.
本発明の易接着ポリエステルフィルムはＩＣカードの外装材に好適に使用するために、基材ポリエステルフィルムの光学濃度が１．０〜２．０であることが好ましい。光学濃度は１．１〜１．８であれば好ましく、１．２〜１．７であれば特に好ましい。光学濃度が１．０以下では隠蔽性に劣り、２．０を超えると空隙の生成が多くなりすぎて、比重が低くなり過ぎ、皺が発生しやすくなる場合がある。 In order to use the easily-adhesive polyester film of the present invention suitably for an IC card exterior material, the base polyester film preferably has an optical density of 1.0 to 2.0. The optical density is preferably 1.1 to 1.8, and particularly preferably 1.2 to 1.7. When the optical density is 1.0 or less, the hiding property is inferior, and when it exceeds 2.0, voids are generated too much, the specific gravity is too low, and wrinkles are likely to occur.
本発明の易接着ポリエステルフィルムは、このような基材ポリエステルフィルムの両面に、変性ポリエステル樹脂からなる高分子結着剤および架橋結合剤を含む受容層を設けてなるポリエステルフィルムである。受容層とは、接着剤や各種塗料の密着性に乏しいフィルム表面に易接着性を持たせるために形成されるものである。有期溶媒系塗料を塗工することにより、高温高湿下での接着性の優れた受容層を得ることができる。 The easy-adhesion polyester film of the present invention is a polyester film in which a receiving layer containing a polymer binder made of a modified polyester resin and a crosslinking agent is provided on both surfaces of such a base polyester film. The receiving layer is formed in order to give easy adhesion to a film surface having poor adhesion between an adhesive and various paints. By applying the fixed solvent-based paint, it is possible to obtain a receiving layer excellent in adhesiveness under high temperature and high humidity.
本発明にかかる受容層は、変性ポリエステル樹脂からなる高分子結着剤を主剤として、これに架橋結合剤を含有して構成されたものである。この受容層が基材ポリエステルフィルム表面に塗設され、本発明に係る易接着ポリエステルフィルムとされるものである。かかる受容層の塗設は、基材ポリエステルフィルムを製膜した後にコーテイングされるが、達成する手段としてオフラインコーティングまたはインラインコーティングが選択される。 The receiving layer according to the present invention is composed of a polymer binder made of a modified polyester resin as a main ingredient and a cross-linking agent added thereto. This receiving layer is coated on the surface of the base polyester film to form the easily adhesive polyester film according to the present invention. Such a receiving layer is coated after the base polyester film is formed, and offline coating or in-line coating is selected as a means for achieving the coating.
かかる高分子結着剤は、極性基含有ポリエステル樹脂や不飽和結合を有する化合物をグラフト化させた共重合ポリエステル樹脂などの変性ポリエステル樹脂からなるものである。 Such a polymer binder is composed of a modified polyester resin such as a polar group-containing polyester resin or a copolymerized polyester resin grafted with a compound having an unsaturated bond.
本発明においては、かかる高分子結着剤に架橋結合剤を含有させて受容層を構成するものである。 In the present invention, the receptor layer is formed by adding a crosslinking agent to such a polymer binder.
かかる架橋結合剤は、前記変性ポリエステル樹脂に存在する官能基、例えば、ヒドロキシル基、カルボキシル基、グリシジル基、アミド基等と熱架橋反応して、最終的には三次元網状構造を有する易接着層とするための架橋剤である。かかる架橋結合剤としては、イソシアネート系化合物、メラミン系化合物、尿素系化合物およびエポキシ系化合物から選ばれた少なくとも１種を用いるのが、架橋効果が大きくて好ましい。 Such a cross-linking agent undergoes a thermal cross-linking reaction with a functional group present in the modified polyester resin, for example, a hydroxyl group, a carboxyl group, a glycidyl group, an amide group, and the like, and finally has an easily adhesive layer having a three-dimensional network structure. Is a cross-linking agent. As such a crosslinking agent, it is preferable to use at least one selected from an isocyanate compound, a melamine compound, a urea compound, and an epoxy compound because of its large crosslinking effect.
これらの架橋結合剤は単独か、場合によっては２種以上併用してもよい。かかる架橋結合剤の配合比率は、高分子結着剤に対して固形分質量比で好ましくは０．５〜１０質量％、より好ましくは３〜１０質量％の範囲がよい。 These crosslinking agents may be used alone or in combination of two or more in some cases. The blending ratio of the cross-linking agent is preferably in the range of 0.5 to 10% by mass, more preferably 3 to 10% by mass in terms of solid content with respect to the polymer binder.
また、受容層の厚みとしては、０．１μｍ以上２μｍ以下が好ましく、より好ましくは０．５μｍ以上１μｍ以下である。０．１μｍ未満では、該受容層を含むポリエステルフィルムと後工程でのインキの密着性に劣ることがある。２μｍを超えるとブロッキングが起こることがある。 In addition, the thickness of the receiving layer is preferably 0.1 μm or more and 2 μm or less, more preferably 0.5 μm or more and 1 μm or less. If it is less than 0.1 μm, the adhesion between the polyester film containing the receptor layer and the ink in the subsequent step may be inferior. If it exceeds 2 μm, blocking may occur.
本発明の易接着ポリエステルフィルムは、基材ポリエステルフィルムの両面に受容層を設け、さらに一方の受容層の表面に表面硬化層を設けることも好ましい。表面硬化層を設けることで、耐摩耗性も付与することができる。かかる表面硬化層は、（メタ）アクリロイルオキシ基を有する単量体の少なくとも一種と、エチレン飽和２重結合を有する単量体の少なくとも一種とを混合した単量体混合物を構成成分として含む。
本発明でいう（メタ）アクリロイルオキシ基（ここで（メタ）アクリロイルオキシ基とは、
アクリロイルオキシ基及びメタアクリロイルオキシ基とを略して表示したものである）の具体的な例としては、ペンタエリスリトールトリ（メタ）アクリレート、ペンタエリスリトールテトラ（メタ）アクリレート、ジペンタエリスリトールトリ（メタ）アクリレート、ジペンタエリスリトールテトラ（メタ）アクリレート、ジペンタエリスリトールペンタ（メタ）アクリレート、ジペンタエリスリトールヘキサ（メタ）アクリレート、トリメチロールプロパントリ（メタ）アクリレートなどが挙げられる。
In the easily adhesive polyester film of the present invention, it is also preferable to provide a receiving layer on both sides of the base polyester film and further to provide a hardened surface layer on the surface of one receiving layer. Abrasion resistance can also be imparted by providing a surface hardened layer. Such a surface hardened layer contains as a constituent component a monomer mixture obtained by mixing at least one monomer having a (meth) acryloyloxy group and at least one monomer having an ethylene saturated double bond.
The (meth) acryloyloxy group referred to in the present invention (where (meth) acryloyloxy group is
Specific examples of acryloyloxy group and methacryloyloxy group are abbreviated to be pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol tri (meth) acrylate. , Dipentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, trimethylolpropane tri (meth) acrylate, and the like.
これらの（メタ）アクリロイルオキシ基を有する単量体は、１種または２種以上を混合して使用してもよい。これらの（メタ）アクリロイルオキシ基を有する単量体の使用割合は、表面効果層の主構成成分である単量体混合物の総量に対して２０〜９０重量％であることが好ましい。より好ましくは３０〜８０重量％であり、さらに好ましくは３０〜７０重量％である。上記単量体の使用割合が２０重量％未満の場合には、充分な耐摩耗性を有する硬化被膜が得られず、またその量が９０重量％を超える場合は、重合による収縮が大きく、硬化被膜に歪が残ったり、被膜の可撓性が低下したり、硬化被膜側に大きくカールしてしまうことがある。 These monomers having a (meth) acryloyloxy group may be used alone or in combination of two or more. The proportion of these (meth) acryloyloxy group-containing monomers is preferably 20 to 90% by weight based on the total amount of the monomer mixture that is the main component of the surface effect layer. More preferably, it is 30-80 weight%, More preferably, it is 30-70 weight%. When the proportion of the monomer used is less than 20% by weight, a cured film having sufficient wear resistance cannot be obtained, and when the amount exceeds 90% by weight, the shrinkage due to polymerization is large, and the cured film is hardened. In some cases, strain remains in the coating, the flexibility of the coating decreases, or the curled coating is greatly curled.
本発明でいうエチレン不飽和二重結合を有する単量体としては、ラジカル重合性のある通常の単量体ならば特に限定されずに使用することができる。 The monomer having an ethylenically unsaturated double bond referred to in the present invention can be used without particular limitation as long as it is a normal monomer having radical polymerizability.
エチレン不飽和二重結合を有する単量体の使用割合は、表面効果層の主構成成分である単量体混合物の総量に対して１０〜８０重量％が好ましく、より好ましくは２０〜７０重量％である。上記単量体の使用割合が８０重量％を超える場合には、十分な耐摩耗性を有する硬化被膜が得られにくくなることがある。また、その使用割合が１０重量％未満の場合には、被膜の可撓性が低下したり、基材ポリエステルフィルム上に設けた受容層との密着性が低下したりすることがある。 The proportion of the monomer having an ethylenically unsaturated double bond is preferably 10 to 80% by weight, more preferably 20 to 70% by weight, based on the total amount of the monomer mixture as the main component of the surface effect layer. It is. When the proportion of the monomer used exceeds 80% by weight, it may be difficult to obtain a cured film having sufficient wear resistance. Moreover, when the use ratio is less than 10% by weight, the flexibility of the coating film may be lowered, or the adhesion with the receiving layer provided on the base polyester film may be lowered.
表面硬化層の塗布手段としては、刷毛塗り、浸漬塗り、ナイフ塗り、ロール塗り、スプレー塗り、流し塗り、回転塗り（スピンナー、ホエラーなど）などの通常行われている塗布方法が容易に適用可能である。各々の方式には特徴があり、表面硬度化フィルムの要求特性、使用用途などにより、塗布方法を適宜選択する。 As the means for applying the surface hardened layer, conventional application methods such as brush coating, dip coating, knife coating, roll coating, spray coating, flow coating, and spin coating (spinner, whaler, etc.) can be easily applied. is there. Each method has its characteristics, and the coating method is appropriately selected depending on the required characteristics of the surface-hardened film and the intended use.
また、塗工時の作業性の向上、塗工膜厚のコントロールを目的として、本発明の目的を損なわない範囲で有機溶剤を配合することができる。
表面硬化層の厚さとしては用途に応じて適宜選択されるが、通常０．５μｍ〜１０μｍ、好ましくは１μｍ〜５μｍである。表面硬度化層の厚さが０．５μｍ未満の場合には、表面硬度が不十分で傷が付きやすく、１０μｍを超える場合には、硬化膜が脆くなりやすくなることがある。
Moreover, an organic solvent can be mix | blended in the range which does not impair the objective of this invention for the purpose of the improvement of workability | operativity at the time of coating, and control of a coating film thickness.
The thickness of the surface hardened layer is appropriately selected according to the use, but is usually 0.5 μm to 10 μm, preferably 1 μm to 5 μm. When the thickness of the surface hardened layer is less than 0.5 μm, the surface hardness is insufficient and the surface is easily scratched, and when it exceeds 10 μm, the cured film may be fragile.
上記した本発明の易接着ポリエステルフィルムは、優れたクッション率と易接着性（印刷・印字性）に優れていることから、樹脂層からなるシート状カードの両面に、受容層とシート状カードが面するように接着してカードとして好ましく用いることができる。なかでも２枚の樹脂層の間にＩＣ及びＩＣアンテナを挟み込んだＩＣカードの両面に用いるとチップや回路の凹凸を吸収するため、特に好ましい。また、本発明の易接着ポリエステルフィルムは、２枚の易接着ポリエステルフィルムで、ＩＣおよびＩＣアンテナを、それぞれの受容層が面するように挟み込んだＩＣカードにも、チップや回路の凹凸を吸収するため好ましく用いることができる。なお、表面硬化層を設けた易接着ポリエステルフィルムの場合には、表面硬化層が設けられていない側の受容層が、シート状カード、ＩＣカード、又はＩＣ・ＩＣアンテナに面するようにする。 Since the above-mentioned easily adhesive polyester film of the present invention is excellent in an excellent cushion rate and easy adhesiveness (printing / printing property), a receiving layer and a sheet-like card are provided on both sides of a sheet-like card made of a resin layer. It can be preferably used as a card by bonding so as to face. In particular, it is particularly preferable to use it on both sides of an IC card in which an IC and an IC antenna are sandwiched between two resin layers, because the unevenness of a chip or a circuit is absorbed. In addition, the easily adhesive polyester film of the present invention absorbs unevenness of the chip and the circuit even in the IC card in which the IC and the IC antenna are sandwiched so that the respective receiving layers face each other with the two easily adhesive polyester films. Therefore, it can be preferably used. In the case of an easily adhesive polyester film provided with a hardened surface layer, the receiving layer on the side where the hardened surface layer is not provided faces the sheet-like card, the IC card, or the IC / IC antenna.
以下に、本発明の易接着ポリエステルフィルムを実施例により具体的に説明するが、本発明はそれらに限定されるものではない。まず、特性評価方法について説明する。 Hereinafter, the easy-adhesion polyester film of the present invention will be specifically described with reference to examples, but the present invention is not limited thereto. First, the characteristic evaluation method will be described.
（１）受容層と基材フィルムとの密着性
２３℃×６５％ＲＨの雰囲気下において、易接着ポリエステルフィルムの受容層側に１ｍｍ幅で縦横に切れ目を入れて１００個の升目を作り、その上にニチバン製Ｎｏ．４０５、幅１８ｍｍのセロハン粘着テープを手で強く圧着し、３０秒放置する。その後、該セロハン粘着テープを、４５°方向へ急速に剥がし受容層の塗膜剥がれ発生の有無を目視確認する。塗膜の剥がれが全くないものを極めて良好として「◎」、塗膜の剥がれが若干見られるが、使用上問題ない程度のものを「○」、塗膜の剥がれ発生が多く実用上問題があるものを「×」とする。
(1) Adhesiveness between receiving layer and base film In an atmosphere of 23 ° C. × 65% RH, 100 mm grids were made by making a 1 mm wide cut in the length and breadth on the receiving layer side of the easily adhesive polyester film. Nichiban no. A cellophane adhesive tape having a width of 405 and a width of 18 mm is firmly pressed by hand and left for 30 seconds. Thereafter, the cellophane pressure-sensitive adhesive tape is rapidly peeled off in the 45 ° direction, and the presence or absence of occurrence of peeling of the coating on the receiving layer is visually confirmed. “◎” indicates that there is no peeling of the coating film, and “◎” indicates that the coating film is peeled off slightly, but “○” indicates that there is no problem in use. A thing is set as "x".
（２）受容層と表面硬化層との密着性
易接着ポリエステルフィルム受容層上に表面硬化層を形成し、２３℃×６５％ＲＨの雰囲気下において、易接着ポリエステルフィルムの表面硬化層側に１ｍｍ幅で縦横に切れ目を入れて１００個の升目を作り、その上にニチバン製Ｎｏ．４０５、幅１８ｍｍのセロハン粘着テープを手で強く圧着し、３０秒放置する。その後、該セロハン粘着テープを、４５°方向へ急速に剥がし表面硬化層の塗膜剥がれ発生の有無を目視確認する。塗膜の剥がれが全くないものを極めて良好として「◎」、塗膜の剥がれが若干見られるが、使用上問題ない程度のものを「○」、塗膜の剥がれ発生が多く実用上問題があるものを「×」とする。
(2) Adhesion between Receptive Layer and Surface Hardened Layer A surface hardened layer is formed on the easily adhesive polyester film receptive layer and 1 mm on the surface hardened layer side of the easily adhesive polyester film in an atmosphere of 23 ° C. × 65% RH. Make 100 grids with width and length and width. A cellophane adhesive tape having a width of 405 and a width of 18 mm is firmly pressed by hand and left for 30 seconds. Thereafter, the cellophane pressure-sensitive adhesive tape is rapidly peeled off in the 45 ° direction, and the presence or absence of occurrence of peeling of the surface cured layer is visually confirmed. “◎” indicates that there is no peeling of the coating film, and “◎” indicates that the coating film is peeled off slightly, but “○” indicates that there is no problem in use. A thing is set as "x".
（３）受容層と基材フィルムとの耐湿密着性
易接着ポリエステルフィルムを６０℃×９０％ＲＨの雰囲気下に３日間放置する。その後、該基材の受容層側に、１ｍｍ幅で縦横に切れ目を入れて１００個の升目を作り、その上にニチバン製Ｎｏ．４０５、幅１８ｍｍのセロハン粘着テープを手で強く圧着し、３０秒放置する。その後、該セロハン粘着テープを、４５°方向へ急速に剥がし受容層の塗膜剥がれ発生の有無を目視確認する。塗膜の剥がれが全くないものを極めて良好として「◎」、塗膜の剥がれが若干見られるが、使用上問題ない程度のものを「○」、塗膜の剥がれ発生が多く実用上問題があるものを「×」とする。
(3) Moisture-resistant adhesion between the receiving layer and the substrate film The easy-adhesive polyester film is left in an atmosphere of 60 ° C. × 90% RH for 3 days. Then, 100 squares were made on the receiving layer side of the base material by making 1 mm width vertically and horizontally, and No. 1 made by Nichiban. A cellophane adhesive tape having a width of 405 and a width of 18 mm is firmly pressed by hand and left for 30 seconds. Thereafter, the cellophane pressure-sensitive adhesive tape is rapidly peeled off in the 45 ° direction, and the presence or absence of occurrence of peeling of the coating on the receiving layer is visually confirmed. “◎” indicates that there is no peeling of the coating film, and “◎” indicates that the coating film is peeled off slightly, but “○” indicates that there is no problem in use. A thing is set as "x".
（４）受容層と表面硬化層との耐湿密着性
易接着ポリエステルフィルム受容層上に表面硬化層を形成し、６０℃×９０％ＲＨの雰囲気下に３日間放置する。その後、該基材の表面硬化層側に、１ｍｍ幅で縦横に切れ目を入れて１００個の升目を作り、その上にニチバン製Ｎｏ．４０５、幅１８ｍｍのセロハン粘着テープを手で強く圧着し、３０秒放置する。その後、該セロハン粘着テープを、４５°方向へ急速に剥がし表面硬化層の塗膜剥がれ発生の有無を目視確認する。塗膜の剥がれが全くないものを極めて良好として「◎」、塗膜の剥がれが若干見られるが、使用上問題ない程度のものを「○」、塗膜の剥がれ発生が多く実用上問題があるものを「×」とする。
(4) Moisture resistant adhesion between the receiving layer and the surface hardened layer A surface hardened layer is formed on the easily adhesive polyester film receiving layer and left in an atmosphere of 60 ° C. × 90% RH for 3 days. Then, 100 squares were made by making cuts vertically and horizontally with a 1 mm width on the surface hardened layer side of the base material. A cellophane adhesive tape having a width of 405 and a width of 18 mm is firmly pressed by hand and left for 30 seconds. Thereafter, the cellophane pressure-sensitive adhesive tape is rapidly peeled off in the 45 ° direction, and the presence or absence of occurrence of peeling of the surface cured layer is visually confirmed. “◎” indicates that there is no peeling of the coating film, and “◎” indicates that the coating film is peeled off slightly, but “○” indicates that there is no problem in use. A thing is set as "x".
（５）受容層と接着剤との密着性
２３℃×６５％ＲＨの雰囲気下において、易接着ポリエステルフィルムの受容層側に、ポリエステル系接着剤を１０μｍ塗布し、１２０℃×１分乾燥させて接着剤被膜を製膜した。次に、２３℃×６５％ＲＨの雰囲気下において、この被膜面に１ｍｍ幅で縦横に切れ目を入れて１００個の升目を作り、その上にニチバン製ＮＯ．４０５、幅１８ｍｍのセロハン粘着テープを手で強く圧着し、３０秒放置する。その後、該セロハン粘着テープを、４５°方向へ急速に剥がし、剥離状況から易接着フィルムと接着剤との密着性を評価する。塗膜の剥がれが全くないものを極めて良好として「◎」、塗膜の剥がれが若干見られるが、使用上問題ない程度のものを「○」、塗膜の剥がれ発生が多く実用上問題があるものを「×」とする。
(5) Adhesiveness between receiving layer and adhesive In an atmosphere of 23 ° C. × 65% RH, 10 μm of polyester adhesive is applied to the receiving layer side of the easy-adhesive polyester film and dried at 120 ° C. for 1 minute. An adhesive coating was formed. Next, in an atmosphere of 23 ° C. × 65% RH, this coating surface is cut into 1 mm width and longitudinally and laterally to form 100 squares, on which Nichiban NO. A cellophane adhesive tape having a width of 405 and a width of 18 mm is firmly pressed by hand and left for 30 seconds. Thereafter, the cellophane pressure-sensitive adhesive tape is rapidly peeled off in the 45 ° direction, and the adhesion between the easy-adhesive film and the adhesive is evaluated from the peeled state. “◎” indicates that there is no peeling of the coating film, and “◎” indicates that the coating film is peeled off slightly, but “○” indicates that there is no problem in use. A thing is set as "x".
（６）基材フィルムの比重
基材フィルムを３０ｍｍ×４０ｍｍの大きさに切取り試料とし、電子比重計（ミラージュ貿易（株）製 ＳＤ―１２０Ｌ）を用いて、室温２３℃相対湿度６５％の雰囲気下にて測定を行う。測定は３回行い平均値をそのフィルムの比重とする。
(6) Specific gravity of the base film The base film was cut into a size of 30 mm × 40 mm, and an atmosphere with a room temperature of 23 ° C. and a relative humidity of 65% was obtained using an electronic hydrometer (SD-120L manufactured by Mirage Trading Co., Ltd.). Measure below. The measurement is performed three times, and the average value is defined as the specific gravity of the film.
（７）基材フィルムのクッション性
三豊製作所（株）ダイヤルゲージＮｏ．２１０９−１０に標準測定子９０００３０を用い、更にダイヤルゲージスタンドＮｏ．７００１ＤＧＳ−Ｍを用いてダイヤルゲージ押さえ部分荷重５０ｇと５００ｇとをかけたときのそれぞれの基材フィルム厚さｄ５０、ｄ５００から次式により求める。
・クッション率＝（ｄ５０−ｄ５００）／ｄ５０×１００。
(7) Cushioning property of base film Mitoyo Manufacturing Co., Ltd. Dial Gauge No. Standard gauge 900030 was used for 2109-10, and dial gauge stand No. It calculates | requires by following Formula from each base film thickness d50 and d500 when dial gauge holding | maintenance partial load 50g and 500g are applied using 7001DGS-M.
Cushion rate = (d50−d500) / d50 × 100.
（８）基材フィルムの光学濃度
基材フィルムを光学濃度計（Ｍａｃｂｅｔｈ ＴＲ−９２７）にて基材フィルムの光学濃度を測定する。光学濃度が１．０〜２．０のものを「◎」、０．６〜０．９のものを「○」、それに満たないものを「×」とする。
(8) Optical density of base film The optical density of the base film is measured with an optical densitometer (Macbeth TR-927). An optical density of 1.0 to 2.0 is indicated by “◎”, an optical density of 0.6 to 0.9 is indicated by “◯”, and an optical density less than that is indicated by “X”.
（９）耐摩耗性
易接着ポリエステルフィルム受容層上に表面硬化層を形成し、スチールウール♯００００で表面硬化層表面を摩擦する。傷の付き具合を目視にて評価し、強く摩擦してもほとんど傷がつかないものを「○」、弱い摩擦でも傷が付くものを「×」とする。
(9) Abrasion resistance A surface hardened layer is formed on the easily adhesive polyester film receiving layer, and the surface hardened layer is rubbed with steel wool # 0000. The degree of scratching is evaluated visually, and “○” indicates that scratches are hardly scratched even when strongly rubbed, and “X” indicates that scratches are weakly scratched.
（１０）ＩＣカードの外観
ＩＣチップ（厚み０．２１ｍｍ）と銅線（直径０．１２ｍｍ）により仮想的な平面コイル状アンテナ（８０ｍｍ×４８ｍｍ）を作製し、該アンテナの裏面にポリエステル樹脂系接着剤を塗布し、厚み５０μｍの「東レ（株）社製 “ルミラー”Ｔ６０」に圧着し、アンテナシートを得る。
該シートの両面に易接着フィルムを、受容層がアンテナシートに面するように熱圧着し、ＩＣカードを得る。目視で確認し、凹凸および該アンテナが全く見られないものを「○」、凹凸が発生または、該アンテナが透けて見え、使用上問題のあるものを「×」とする。
(10) Appearance of IC card A virtual planar coiled antenna (80 mm x 48 mm) is produced with an IC chip (thickness 0.21 mm) and copper wire (diameter 0.12 mm), and a polyester resin adhesive is attached to the back surface of the antenna. An agent sheet is applied and pressure-bonded to “Lumirror” T60 manufactured by Toray Industries, Inc. having a thickness of 50 μm to obtain an antenna sheet.
An easy-adhesive film is thermocompression-bonded on both surfaces of the sheet so that the receiving layer faces the antenna sheet to obtain an IC card. Visually confirmed, “O” indicates that the unevenness and the antenna are not seen at all, and “X” indicates that the unevenness is generated or the antenna is seen through and has a problem in use.
（１１）印字・印刷適性
易接着ポリエステルフィルムを両面テープを用いて台紙に、基材フィルム側が台紙に面するように貼り付けて固定した後、カラーインキジェットプリンタ（EPSON社：PM-800C）を用いて、受容層に印刷し、乾燥させた後印刷適性を観察する。評価は目視で行い、印刷良好なものを「○」印刷抜け等が多く見られ実用不可能なものを「×」とする。
(11) Printability / Printability After attaching and fixing the easy-adhesive polyester film to the mount with double-sided tape so that the base film side faces the mount, install a color ink jet printer (EPSON: PM-800C). Used, printed on the receiving layer, dried and observed for printability. The evaluation is carried out visually, and “○” indicates that printing is good and “×” indicates that many printing omissions are observed and impractical.
（参考例１）
厚み２５０μｍ、空隙を有する中間層とその両面に空隙を有しない表面層からなる積層体の二軸配向ポリエステルフィルム「東レ（株）社製“ルミラー”Ｅ６ＳＬ」を基材フィルムとし、該基材フィルムの片面に、日本化工塗料（株）製の変性ポリエステル高分子結着剤ＴＲ−５改３（固形分質量比２０質量％）を、下記の組成Ａにてグラビアロール（＃２００，斜線タイプ）を用いて塗工し、１３０℃のオーブンにて２０秒乾燥、熱硬化させて厚み０．５μｍの受容層を設けて易接着ポリエステルフィルムを得た。さらに、得られた易接着ポリエステルフィルムを５０℃で３日間エージング処理を施した。
評価結果を表１に示したが、受容層と基材フィルムとの密着性、受容層と基材フィルムとの耐湿密着性、受容層と接着剤との密着性、比重、クッション率、光学濃度、ＩＣカード外観、印字・印刷適性のいずれも極めて良好であった。
・組成Ａ
ＴＲ−５改３ ： １００質量部
ＴＤ硬化剤 ： １．７質量部
トルエン ： ４０質量部
メチルエチルケトン ： １０質量部。
( Reference Example 1)
A biaxially oriented polyester film “Lumirror” E6SL manufactured by Toray Industries, Inc., which is a laminate composed of an intermediate layer having a thickness of 250 μm and a void and a surface layer having no voids on both sides thereof, is used as the substrate film. On one side, modified polyester polymer binder TR-5 modified 3 (solid content mass ratio 20% by mass) manufactured by Nippon Kayaku Paint Co., Ltd., gravure roll (# 200, oblique line type) with the following composition A Was applied and dried in a 130 ° C. oven for 20 seconds and thermally cured to provide a 0.5 μm thick receiving layer to obtain an easily adhesive polyester film. Furthermore, the obtained easily-adhesive polyester film was subjected to an aging treatment at 50 ° C. for 3 days.
The evaluation results are shown in Table 1. Adhesion between the receiving layer and the base film, moisture-resistant adhesion between the receiving layer and the base film, adhesiveness between the receiving layer and the adhesive, specific gravity, cushion ratio, optical density The IC card appearance and printing / printability were all very good.
・ Composition A
TR-5 reform 3: 100 parts by mass TD curing agent: 1.7 parts by mass Toluene: 40 parts by mass Methyl ethyl ketone: 10 parts by mass.
（参考例２）
基材フィルムを厚み１８８μｍ、空隙を有する中間層とその両面に空隙を有しない表面層からなる積層体の「東レ（株）社製“ルミラー”Ｅ６０Ｌ」にする以外は実施例１と同様の方法にて易接着ポリエステルフィルムを得た。さらに、得られた易接着ポリエステルフィルムを５０℃で３日間エージング処理を施した。
評価結果を表１に示したが、受容層と基材フィルムとの密着性、受容層と基材フィルムとの耐湿密着性、受容層と接着剤との密着性、比重、クッション率、光学濃度、ＩＣカード外観、印字・印刷適性のいずれも極めて良好であった。
( Reference Example 2)
A method similar to that of Example 1 except that the base film is made of “Lumirror” E60L manufactured by Toray Industries, Inc., which is a laminate composed of an intermediate layer having a thickness of 188 μm and a void and a surface layer having no voids on both sides thereof. To obtain an easily adhesive polyester film. Furthermore, the obtained easily-adhesive polyester film was subjected to an aging treatment at 50 ° C. for 3 days.
The evaluation results are shown in Table 1. Adhesion between the receiving layer and the base film, moisture-resistant adhesion between the receiving layer and the base film, adhesiveness between the receiving layer and the adhesive, specific gravity, cushion ratio, optical density The IC card appearance and printing / printability were all very good.
（参考例３）
基材フィルムを厚み１８８μｍ、空隙を含む層と含まない層の２層構造を持つ帝人（株）社製１８８ＵＸＺ１にする以外は実施例１と同様の方法にて易接着ポリエステルフィルムを得た。さらに、得られた易接着ポリエステルフィルムを５０℃で３日間エージング処理を施した。評価結果を表１に示したが、受容層と基材フィルムとの密着性、受容層と基材フィルムとの耐湿密着性、受容層と接着剤との密着性、比重、クッション率、光学濃度、ＩＣカード外観、印字・印刷適性のいずれも極めて良好であった。
( Reference Example 3)
An easy-adhesive polyester film was obtained in the same manner as in Example 1 except that the base film was 188 UXZ1 manufactured by Teijin Ltd. having a two-layer structure having a thickness of 188 μm and a layer containing voids. Furthermore, the obtained easily-adhesive polyester film was subjected to an aging treatment at 50 ° C. for 3 days. The evaluation results are shown in Table 1. Adhesion between the receiving layer and the base film, moisture-resistant adhesion between the receiving layer and the base film, adhesiveness between the receiving layer and the adhesive, specific gravity, cushion ratio, optical density The IC card appearance and printing / printability were all very good.
（実施例４）
参考例１の易接着フィルムにおいて、受容層が設けられていない基材フィルム面にさらに同じ受容層を設けた。一方の受容層の表面に、ジペンタエリスリトールヘキサアクリレート７０重量部、Ｎ−ビニルピロリドン３０重量部、１−ヒドロキシシクロヘキシルフェニルケトン４重量部を混合攪拌して得られた組成物を、バーコーターを用いて硬化後の膜厚が３μｍとなるように均一に塗布した。これを、塗布面より９ｃｍの高さにセットした８０Ｗ／ｃｍの照射強度を有する高圧水銀灯で、紫外線を１５秒照射し、硬化させ、易接着ポリエステルフィルム上に表面硬化層を形成した。評価結果を表１に示したが、受容層と基材フィルムとの密着性、受容層と基材フィルムとの耐湿密着性、受容層と接着剤との密着性、受容層と表面硬化層との密着性、受容層と表面硬化層との耐湿密着性、比重、クッション率、光学濃度、ＩＣカード外観、耐摩耗性のいずれも極めて良好であった。
Example 4
In the easy-adhesion film of Reference Example 1, the same receiving layer was further provided on the base film surface on which the receiving layer was not provided. Using a bar coater, a composition obtained by mixing and stirring 70 parts by weight of dipentaerythritol hexaacrylate, 30 parts by weight of N-vinylpyrrolidone, and 4 parts by weight of 1-hydroxycyclohexyl phenyl ketone on the surface of one receiving layer. Then, it was uniformly applied so that the film thickness after curing was 3 μm. This was cured by irradiating ultraviolet rays for 15 seconds with a high-pressure mercury lamp having an irradiation intensity of 80 W / cm set at a height of 9 cm from the coated surface to form a cured surface layer on the easily adhesive polyester film. The evaluation results are shown in Table 1, but the adhesion between the receiving layer and the substrate film, the moisture-resistant adhesion between the receiving layer and the substrate film, the adhesion between the receiving layer and the adhesive, the receiving layer and the surface cured layer, The adhesiveness, moisture resistance adhesion between the receiving layer and the surface hardened layer, specific gravity, cushion ratio, optical density, IC card appearance, and abrasion resistance were all very good.
（実施例５）
参考例２の易接着フィルムにおいて、受容層が設けられていない基材フィルム面にさらに同じ受容層を設けた。一方の受容層の表面に、実施例４と同様の方法にて表面硬化層を得た。評価結果を表１に示したが、受容層と基材フィルムとの密着性、受容層と基材フィルムとの耐湿密着性、受容層と接着剤との密着性、受容層と表面硬化層との密着性、受容層と表面硬化層との耐湿密着性、比重、クッション率、光学濃度、ＩＣカード外観、耐摩耗性のいずれも極めて良好であった。
(Example 5)
In the easy-adhesion film of Reference Example 2, the same receiving layer was further provided on the base film surface on which the receiving layer was not provided. A surface hardened layer was obtained on the surface of one receiving layer in the same manner as in Example 4. The evaluation results are shown in Table 1, but the adhesion between the receiving layer and the substrate film, the moisture-resistant adhesion between the receiving layer and the substrate film, the adhesion between the receiving layer and the adhesive, the receiving layer and the surface cured layer, The adhesiveness, moisture resistance adhesion between the receiving layer and the surface hardened layer, specific gravity, cushion ratio, optical density, IC card appearance, and abrasion resistance were all very good.
（実施例６）
参考例３の易接着フィルムにおいて、受容層が設けられていない基材フィルム面にさらに同じ受容層を設けた。一方の受容層の表面に、実施例４と同様の方法にて表面硬化層を得た。評価結果を表１に示したが、受容層と基材フィルムとの密着性、受容層と基材フィルムとの耐湿密着性、受容層と接着剤との密着性、受容層と表面硬化層との密着性、受容層と表面硬化層との耐湿密着性、比重、クッション率、光学濃度、ＩＣカード外観、耐摩耗性のいずれも極めて良好であった。
(Example 6)
In the easy-adhesion film of Reference Example 3, the same receptor layer was further provided on the base film surface on which the receptor layer was not provided. A surface hardened layer was obtained on the surface of one receiving layer in the same manner as in Example 4. The evaluation results are shown in Table 1, but the adhesion between the receiving layer and the substrate film, the moisture-resistant adhesion between the receiving layer and the substrate film, the adhesion between the receiving layer and the adhesive, the receiving layer and the surface cured layer, The adhesiveness, moisture resistance adhesion between the receiving layer and the surface hardened layer, specific gravity, cushion ratio, optical density, IC card appearance, and abrasion resistance were all very good.
（比較例１）
基材フィルムを厚み５０μｍ、空隙を有さない積層体の「東レ（株）社製“ルミラー”Ｅ４２」にする以外は参考例１と同様の方法にて易接着ポリエステルフィルムを得た。さらに、得られた易接着ポリエステルフィルムを５０℃で３日間エージング処理を施した。
評価結果を表１に示したが、受容層と基材フィルムとの密着性、受容層と基材フィルムとの耐湿密着性、受容層と接着剤との密着性、比重、印字・印刷適性のいずれも良好であったが、光学濃度は実用に問題は無いが、若干劣り、クッション性及び、ＩＣカード外観は実用上問題のあるものであった。
(Comparative Example 1)
An easy-adhesive polyester film was obtained in the same manner as in Reference Example 1 except that the base film was a “Lumirror” E42 manufactured by Toray Industries, Inc., which was a laminate having a thickness of 50 μm and no voids. Furthermore, the obtained easily-adhesive polyester film was subjected to an aging treatment at 50 ° C. for 3 days.
The evaluation results are shown in Table 1. The adhesion between the receiving layer and the substrate film, the moisture-resistant adhesion between the receiving layer and the substrate film, the adhesion between the receiving layer and the adhesive, specific gravity, printability and printability. Although both were good, the optical density had no problem in practical use, but was slightly inferior, and the cushioning properties and the IC card appearance had practical problems.
（比較例２）
基材フィルムを厚み７５μｍ、空隙を有さない単層体の「東レ（株）社製“ルミラー”Ｅ２０」にする以外は参考例１と同様の方法にて易接着ポリエステルフィルムを得た。さらに、得られた易接着ポリエステルフィルムを５０℃で３日間エージング処理を施した。
評価結果を表１に示したが、受容層と基材フィルムとの密着性、受容層と基材フィルムとの耐湿密着性、受容層と接着剤との密着性、比重、光学濃度、印字・印刷適性のいずれも良好であったが、クッション性及びＩＣカード外観は実用上問題のあるものであった。
(Comparative Example 2)
An easily-adhesive polyester film was obtained in the same manner as in Reference Example 1 except that the base film had a thickness of 75 μm and a single layer “Lumirror” E20 manufactured by Toray Industries, Inc. was used. Furthermore, the obtained easily-adhesive polyester film was subjected to an aging treatment at 50 ° C. for 3 days.
The evaluation results are shown in Table 1. The adhesion between the receiving layer and the substrate film, the moisture-resistant adhesion between the receiving layer and the substrate film, the adhesion between the receiving layer and the adhesive, specific gravity, optical density, printing / printing Although the printability was good, the cushioning properties and the IC card appearance were problematic in practical use.
（比較例３）
基材フィルムを厚み５０μｍ、空隙を有する中間層とその両面に空隙を有しない表面層からなる積層体の発泡ＰＰフィルムにする以外は参考例１と同様の方法にて易接着基材を得た。さらに、得られた易接着ポリプロピレンフィルムを５０℃で３日間エージング処理を施した。
評価結果を表１に示したが、受容層と基材フィルムとの密着性及び受容層と基材フィルムとの耐湿密着性、受容層と接着剤との密着性、比重、光学濃度、印字・印刷適性は良好であった。しかし、クッション性、ＩＣカードの外観のいずれも実用上問題があるものであった。
(Comparative Example 3)
An easy-adhesive base material was obtained in the same manner as in Reference Example 1 except that the base film was made into a laminated PP foam film having a thickness of 50 μm, an intermediate layer having voids and a surface layer having no voids on both sides thereof. . Furthermore, the obtained easily-adhesive polypropylene film was aged at 50 ° C. for 3 days.
The evaluation results are shown in Table 1. The adhesion between the receiving layer and the substrate film and the moisture-resistant adhesion between the receiving layer and the substrate film, the adhesion between the receiving layer and the adhesive, specific gravity, optical density, printing / printing The printability was good. However, both the cushioning properties and the appearance of the IC card have practical problems.
（比較例４）
基材フィルムを厚み２２５μｍ、空隙を含む層の単層構造を持つＳＫＣ社製ＳＹ６４にする以外は参考例１と同様の方法にて易接着ポリエステルフィルムを得た。さらに、得られた易接着ポリエステルフィルムを５０℃で３日間エージング処理を施した。評価結果を表１に示したが、受容層と基材フィルムとの密着性、受容層と基材フィルムとの耐湿密着性、受容層と接着剤との密着性、比重、光学濃度、印字・印刷適性のいずれも良好であったが、クッション率及びＩＣカード外観は実用上問題のあるものであった。
(Comparative Example 4)
An easily-adhesive polyester film was obtained in the same manner as in Reference Example 1 except that the base film was SY64 manufactured by SKC having a thickness of 225 μm and a single layer structure including a void. Furthermore, the obtained easily-adhesive polyester film was subjected to an aging treatment at 50 ° C. for 3 days. The evaluation results are shown in Table 1. The adhesion between the receiving layer and the substrate film, the moisture-resistant adhesion between the receiving layer and the substrate film, the adhesion between the receiving layer and the adhesive, specific gravity, optical density, printing / printing Although the printability was good, the cushion ratio and the IC card appearance were problematic in practical use.
本発明の易接着ポリエステルフィルムにおいては、基材に塗布する易接着層を特定のものから構成することにより、高温高湿下での基材との密着性、後加工での塗料との密着性、接着剤との接着性等がともに向上でき、かつ、透明性や光沢性に優れた易接着層を有する易接着ポリエステルフィルムを得ることができるため、たとえばＩＣカード、電子材料、グラフィック材料などに好適に用いることができる。 In the easy-adhesive polyester film of the present invention, the easy-adhesion layer applied to the base material is composed of a specific material, so that it adheres to the base material under high temperature and high humidity, and adheres to the paint in post-processing. Since it is possible to obtain an easy-adhesion polyester film having an easy-adhesion layer with excellent transparency and glossiness, such as an IC card, an electronic material, and a graphic material. It can be used suitably.
Claims (7)
クッション率とは、三豊製作所（株）ダイヤルゲージＮｏ．２１０９−１０に標準測定子９０００３０を用い、更にダイヤルゲージスタンドＮｏ．７００１ＤＧＳ−Ｍを用いてダイヤルゲージ押さえ部分荷重５０ｇと５００ｇとをかけたときのそれぞれの基材フィルム厚さｄ５０、ｄ５００から次式により求めた値をいう。クッション率＝（ｄ５０−ｄ５００）／ｄ５０×１００ A receiving layer containing a polymer binder made of a modified polyester resin and a cross-linking agent is provided on both sides of the base polyester film, and a surface hardened layer is provided on the surface of one receiving layer, The base polyester film comprises a monomer mixture obtained by mixing at least one monomer having a (meth) acryloyloxy group and at least one monomer having an ethylenically unsaturated double bond as a constituent component. An easily-adhesive polyester film comprising at least one layer having a thickness of 15 to 40%.
Cushion rate is Mitutoyo Manufacturing Co., Ltd. Dial Gauge No. Standard gauge 900030 was used for 2109-10, and dial gauge stand No. The value calculated | required by following Formula from each base film thickness d50 and d500 when dial gauge pressing part load 50g and 500g is applied using 7001DGS-M. Cushion rate = (d50−d500) / d50 × 100
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008142164A JP5343406B2 (en) | 2008-01-11 | 2008-05-30 | Easy adhesion polyester film |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008004050 | 2008-01-11 | ||
| JP2008004050 | 2008-01-11 | ||
| JP2008142164A JP5343406B2 (en) | 2008-01-11 | 2008-05-30 | Easy adhesion polyester film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2009184341A JP2009184341A (en) | 2009-08-20 |
| JP5343406B2 true JP5343406B2 (en) | 2013-11-13 |
Family
ID=41068092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008142164A Expired - Fee Related JP5343406B2 (en) | 2008-01-11 | 2008-05-30 | Easy adhesion polyester film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5343406B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500856B (en) * | 2015-12-15 | 2018-02-27 | 哈尔滨工业大学无锡新材料研究院 | Can be with the directly hot composite polyester film of engineering plastics and preparation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09226079A (en) * | 1995-12-22 | 1997-09-02 | Toray Ind Inc | Surface curable film |
| JP3711648B2 (en) * | 1996-09-02 | 2005-11-02 | 東レ株式会社 | White polyester film and receiving sheet for thermal transfer |
| JPH11161756A (en) * | 1997-12-01 | 1999-06-18 | Toray Ind Inc | White film for ic card |
| JP3925736B2 (en) * | 2005-04-28 | 2007-06-06 | 東洋紡績株式会社 | Thermally adhesive white polyester film for IC card or IC tag, IC card or IC tag manufacturing method using the same, and IC card or IC tag |
| JP2007021862A (en) * | 2005-07-15 | 2007-02-01 | Toray Ind Inc | Easy adhesion film |
-
2008
- 2008-05-30 JP JP2008142164A patent/JP5343406B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009184341A (en) | 2009-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4392624B1 (en) | Hard coat film for molding | |
| CN107206759B (en) | Hard coating film | |
| TWI555639B (en) | Printing sheet, decorative sheet, and adhesive decorative sheet | |
| KR102404380B1 (en) | One-side adhesion adhesive sheet | |
| JP5607565B2 (en) | Adhesive and adhesive sheet | |
| TW201213119A (en) | Synthetic resin laminate | |
| JP6430368B2 (en) | Hard coat film for molding | |
| TWI606932B (en) | High hardness film | |
| WO2020121687A1 (en) | Release film | |
| JP2011039823A (en) | Protection sheet for touch panel and electroconductive laminate for the touch panel | |
| CA2860882A1 (en) | Coated films | |
| JP2007245442A (en) | Laminate and sheet | |
| JP6574109B2 (en) | Decorative film | |
| JP6184700B2 (en) | Printing sheet and manufacturing method thereof | |
| JP6074144B2 (en) | Optical film and display device | |
| JP5343406B2 (en) | Easy adhesion polyester film | |
| JP3629853B2 (en) | Hard coat film | |
| JP2015066796A (en) | Hard coat film for molding and method for producing the same | |
| JP6805053B2 (en) | Writing quality improvement sheet | |
| JP6391963B2 (en) | Hard coat film for molding and method for producing the same | |
| JP2005298722A (en) | Polymer solution, lusterless coating material and decorative sheet | |
| JP6062265B2 (en) | Printing sheet, coating liquid for forming the printing sheet, and method for producing a printing sheet using the coating liquid | |
| JP2014131782A (en) | Method for manufacturing anchor coat sheet, and method for manufacturing laminated sheet | |
| JP2020075442A (en) | Decorative paper | |
| JP7429544B2 (en) | Laminated film, printed body, and method for producing printed body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20110526 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20120614 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120828 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20121003 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20130716 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20130729 |
|
| R151 | Written notification of patent or utility model registration |
Ref document number: 5343406 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |
|
| LAPS | Cancellation because of no payment of annual fees |