JPH1170629A - Surface protective film for liquid crystal display panel - Google Patents
Surface protective film for liquid crystal display panelInfo
- Publication number
- JPH1170629A JPH1170629A JP10194954A JP19495498A JPH1170629A JP H1170629 A JPH1170629 A JP H1170629A JP 10194954 A JP10194954 A JP 10194954A JP 19495498 A JP19495498 A JP 19495498A JP H1170629 A JPH1170629 A JP H1170629A
- Authority
- JP
- Japan
- Prior art keywords
- film
- resistant layer
- liquid crystal
- crystal display
- abrasion
- 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.)
- Granted
Links
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液晶表示板表面保
護フィルムに関するものであり、詳しくは、液晶表示板
の偏光板または位相差板の表面に貼着することにより、
偏光板または位相差板の表面を保護するために使用され
る液晶表示板表面保護フィルムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface protection film for a liquid crystal display panel, and more particularly, to a method for attaching the same to a polarizing plate or a retardation plate of a liquid crystal display panel.
The present invention relates to a liquid crystal display panel surface protective film used for protecting the surface of a polarizing plate or a retardation plate.
【０００２】[0002]
【従来の技術】通常、液晶表示板は、２枚の基板の間に
液晶を封入した液晶セルの両面に偏光板または位相差板
を積層することによって作製される。そして、流通過程
やコンピューター、ワープロ、テレビ等の各種表示機器
の組み立て工程における偏光板または位相差板の表面の
擦傷防止や塵芥付着防止のため、偏光板または位相差板
の表面には保護フィルムが貼着される。斯かる保護フィ
ルムは、偏光板または位相差板の保護の役目を果たした
後においては不要物として剥離除去される。通常、保護
フィルムの剥離除去は、保護フィルムに粘着テープを押
し付けて当該粘着テープを持ち上げる方法により行われ
る。2. Description of the Related Art Generally, a liquid crystal display panel is manufactured by laminating a polarizing plate or a retardation plate on both sides of a liquid crystal cell in which liquid crystal is sealed between two substrates. A protective film is applied to the surface of the polarizing plate or retardation plate in order to prevent abrasion and dust adhesion on the surface of the polarizing plate or retardation plate in the distribution process and in the assembly process of various display devices such as computers, word processors, and televisions. Affixed. Such a protective film is peeled and removed as an unnecessary substance after having served the role of protecting the polarizing plate or the retardation plate. Usually, peeling and removal of the protective film is performed by a method of pressing an adhesive tape against the protective film and lifting the adhesive tape.
【０００３】従来、上記の保護フィルムとして、ポリエ
チレンフィルム、エチレン−酢酸ビニル共重合体フィル
ム等が使用されている。しかしながら、これらの保護フ
ィルムは、液晶表示板の表示能力、色相、コントラス
ト、異物混入などの光学的評価を伴う検査には支障を来
すことがあるため、検査時に一旦剥離し、検査終了後に
再度貼付しなければならない欠点がある。Conventionally, polyethylene films, ethylene-vinyl acetate copolymer films and the like have been used as the above protective films. However, these protective films may hinder inspections involving optical evaluations such as display capability, hue, contrast, and contamination of liquid crystal display panels. There is a disadvantage that must be attached.
【０００４】特開平４−３０１２０号公報には、光学的
評価を伴う検査時に剥離する必要がない保護フィルムと
して、光等方性基材フィルムに光等方性粘着性樹脂層を
積層した保護フィルムが提案されている。しかしなが
ら、この保護フィルムは、基材フィルムとして、流延法
により製膜され、従って、殆ど配向しておらずに非晶質
に近い状態のフィルムを使用しているため、耐薬品性、
耐擦傷性などの点で十分とは言えない。Japanese Patent Application Laid-Open No. Hei 4-30120 proposes a protective film in which an optically isotropic adhesive resin layer is laminated on an optically isotropic substrate film, as a protective film which does not need to be peeled off during an inspection involving optical evaluation. Have been. However, this protective film is formed by a casting method as a base film, and therefore, a film that is almost non-oriented and almost amorphous is used, so that the chemical resistance,
It is not sufficient in terms of scratch resistance and the like.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、上記実情に
鑑みなされたものであり、その目的は、取扱性に優れ、
光学的評価を伴う液晶表示板の検査が容易であり、液晶
表示板へのゴミの付着防止に優れる等の特性を有する、
液晶表示板表面保護フィルムを提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and its object is to provide an excellent handleability.
Inspection of liquid crystal display panel with optical evaluation is easy, and it has characteristics such as excellent prevention of dust adhesion to liquid crystal display panel,
An object of the present invention is to provide a liquid crystal display panel surface protective film.
【０００６】[0006]
【課題を解決するための手段】すなわち、本発明の要旨
は、液晶表示板の偏光板または位相差板の表面に貼着し
て使用される液晶表示板表面保護フィルムであって、厚
さが５〜５０μｍの二軸配向ポリエステルフィルムの一
方の表面に耐摩耗性層が設けられ且つ他方の表面に粘着
層が設けられた積層フィルムから成り、上記の二軸配向
ポリエステルフィルムはレターデーション値が３０〜１
０，０００ｎｍであり、上記の耐摩耗性層は表面抵抗率
が１×１０10Ω未満であり、上記の積層フィルムは全光
線透過率が８０％以上であることを特徴とする液晶表示
板表面保護フィルムに存する。That is, the gist of the present invention is to provide a liquid crystal display panel surface protection film which is used by being adhered to the surface of a polarizing plate or a phase difference plate of a liquid crystal display plate, and has a thickness. A biaxially oriented polyester film of 5 to 50 μm is composed of a laminated film in which an abrasion-resistant layer is provided on one surface and an adhesive layer is provided on the other surface, and the biaxially oriented polyester film has a retardation value of 30. ~ 1
Wherein the abrasion-resistant layer has a surface resistivity of less than 1 × 10 10 Ω, and the laminated film has a total light transmittance of 80% or more. Exist in protective film.
【０００７】[0007]
【発明の実施の形態】以下、本発明を詳細に説明する。
本発明の液晶表示板表面保護フィルムは、液晶表示板の
偏光板または位相差板の表面に貼着して使用され、二軸
配向ポリエステルフィルムの一方の表面に耐摩耗性層が
設けられ且つ他方の表面に粘着層が設けられた積層フィ
ルムから成る。そして、本発明の好まして態様において
は、粘着層の表面に離型フィルムが積層される。斯かる
本発明の液晶表示板表面保護フィルムは、一般的には、
耐摩耗性層形成工程、粘着層形成工程、離型フィルム積
層工程を順次に経て製造される。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
The liquid crystal display panel surface protective film of the present invention is used by being adhered to the surface of a polarizing plate or a retardation plate of a liquid crystal display plate, and provided with a wear-resistant layer on one surface of a biaxially oriented polyester film and the other. From a laminated film provided with an adhesive layer on the surface of the film. Then, in a preferred embodiment of the present invention, a release film is laminated on the surface of the adhesive layer. Such a liquid crystal display panel surface protection film of the present invention is generally
It is manufactured through a wear-resistant layer forming step, an adhesive layer forming step, and a release film laminating step sequentially.
【０００８】本発明において、二軸配向ポリエステルフ
ィルム（以下フィルムと略記する）とは、いわゆる押出
法に従い押出口金から溶融押出しされたシートを縦方向
および横方向の二軸方向に延伸して配向させたフィルム
である。In the present invention, a biaxially oriented polyester film (hereinafter abbreviated as a film) refers to a sheet melt-extruded from an extrusion die according to a so-called extrusion method and stretched in a biaxial direction in a machine direction and a transverse direction. Film.
【０００９】上記のフィルムを構成するポリエステルと
は、芳香族ジカルボン酸と脂肪族グリコ−ルとを重縮合
させて得られるポリエステルを指す。芳香族ジカルボン
酸としては、テレフタル酸、２，６−ナフタレンジカル
ボン酸などが挙げられ、脂肪族グリコ−ルとしては、エ
チレングリコ−ル、ジエチレングリコ−ル、１，４−シ
クロヘキサンジメタノ−ル等が挙げられる。代表的なポ
リエステルとしては、ポリエチレンテレフタレ−ト（Ｐ
ＥＴ）、ポリエチレン−２，６−ナフタレンジカルボキ
シレ−ト（ＰＥＮ）等が例示される。The polyester constituting the above film refers to a polyester obtained by polycondensing an aromatic dicarboxylic acid and an aliphatic glycol. Examples of the aromatic dicarboxylic acid include terephthalic acid and 2,6-naphthalenedicarboxylic acid, and examples of the aliphatic glycol include ethylene glycol, diethylene glycol, and 1,4-cyclohexanedimethanol. No. A typical polyester is polyethylene terephthalate (P
ET), polyethylene-2,6-naphthalenedicarboxylate (PEN) and the like.
【００１０】上記のポリエステルは、第三成分を含有し
た共重合体であってもよい。斯かる共重合ポリエステル
のジカルボン酸成分としては、イソフタル酸、フタル
酸、テレフタル酸、２，６−ナフタレンジカルボン酸、
アジピン酸、セバシン酸、オキシカルボン酸（例えば、
Ｐ−オキシ安息香酸など）が挙げられ、グリコ−ル成分
として、エチレングリコ−ル、ジエチレングリコ−ル、
プロピレングリコ−ル、ブタンジオ−ル、１，４−シク
ロヘキサンジメタノ−ル、ネオペンチルグリコ−ル等が
挙げられる。これらのジカルボン酸成分およびグリコ−
ル成分は、二種以上を併用してもよい。The above polyester may be a copolymer containing a third component. As the dicarboxylic acid component of such a copolymerized polyester, isophthalic acid, phthalic acid, terephthalic acid, 2,6-naphthalenedicarboxylic acid,
Adipic acid, sebacic acid, oxycarboxylic acid (for example,
P-oxybenzoic acid, etc.), and as a glycol component, ethylene glycol, diethylene glycol,
Examples thereof include propylene glycol, butanediol, 1,4-cyclohexanedimethanol, and neopentyl glycol. These dicarboxylic acid components and glyco-
Two or more components may be used in combination.
【００１１】本発明においては、その取扱性を考慮した
場合、透明性を損なわない条件でフィルムに粒子を含有
させることが好ましい。粒子としては、例えば、二酸化
ケイ素、炭酸カルシウム、酸化アルミニウム、二酸化チ
タン、カオリン、タルク、ゼオライト、フッ化リチウ
ム、硫酸バリウム、カーボンブラック、特公昭５９−５
２１６号公報に記載されている様な、耐熱性高分子微粉
体などが挙げられる。これらの粒子は、２種以上を併用
してもよい。粒子の平均粒径は、通常０．０２〜２μ
ｍ、好ましくは０．０５〜１．５μｍ、更に好ましくは
０．０５〜１μｍである。粒子の含有量は、通常０．０
１〜２重量％、好ましくは０．０２〜１重量％とされ
る。In the present invention, in consideration of the handling properties, it is preferable that particles are contained in the film under conditions that do not impair transparency. Examples of the particles include silicon dioxide, calcium carbonate, aluminum oxide, titanium dioxide, kaolin, talc, zeolite, lithium fluoride, barium sulfate, carbon black, and JP-B-59-5.
No. 216, heat-resistant polymer fine powder, and the like. These particles may be used in combination of two or more kinds. The average particle size of the particles is usually 0.02 to 2 μm.
m, preferably 0.05 to 1.5 μm, more preferably 0.05 to 1 μm. The content of particles is usually 0.0
The content is 1 to 2% by weight, preferably 0.02 to 1% by weight.
【００１２】フィルムに粒子を含有させる方法として
は、公知の方法を採用し得る。例えば、ポリエステル製
造工程の任意の段階で粒子を添加することが出来る。特
に、エステル化の段階またはエステル交換反応終了後重
縮合反応開始前の段階において、エチレングリコール等
に分散させたスラリーとして添加し重縮合反応を進める
のが好ましい。また、ベント付混練押出機を使用し、エ
チレングリコ−ル又は水に粒子を分散させたスラリ−と
ポリエステル原料とをブレンドする方法、混練押出機を
使用し、乾燥させた粒子とポリエステル原料とをブレン
ドする方法なども採用し得る。As a method for incorporating particles into the film, a known method can be employed. For example, particles can be added at any stage of the polyester production process. In particular, at the stage of esterification or at the stage after the end of the transesterification reaction and before the start of the polycondensation reaction, it is preferable to add as a slurry dispersed in ethylene glycol or the like to advance the polycondensation reaction. Further, using a kneading extruder with a vent, a method of blending a slurry in which particles are dispersed in ethylene glycol or water with a polyester raw material, and using a kneading extruder, drying the dried particles and the polyester raw material. A blending method may be employed.
【００１３】フィルムの製造は、押出法に従い押出口金
から溶融押出しされたシートを縦方向および横方向の二
軸方向に延伸して配向させる方法によって行われる。The production of the film is carried out by a method in which a sheet melt-extruded from an extrusion die according to an extrusion method is stretched and oriented biaxially in a machine direction and a transverse direction.
【００１４】押出法においては、ポリエステルを押出口
金から溶融押出し、冷却ロ−ルで冷却固化して未延伸シ
−トを得る。この場合、シ−トの平面性を向上させるた
め、シ−トと回転冷却ドラムとの密着性を高める必要が
あり、静電印加密着法または液体塗布密着法が好ましく
採用される。静電印加密着法とは、通常、シ−トの上面
側にシ−トの流れと直行する方向に線状電極を張架し、
該電極に約５〜１０ｋＶの直流電圧を印加することによ
り、シ−トに静電荷を付与してシ−トとドラムとの密着
性を向上させる方法である。また、液体塗布密着法と
は、回転冷却ドラム表面の全体または一部（例えばシ−
ト両端部と接触する部分のみ）に液体を均一に塗布する
ことにより、ドラムとシ−トとの密着性を向上させる方
法である。本発明においては必要に応じ両者を併用して
もよい。In the extrusion method, a polyester is melt-extruded from an extrusion die and cooled and solidified by a cooling roll to obtain an undrawn sheet. In this case, in order to improve the flatness of the sheet, it is necessary to increase the adhesion between the sheet and the rotary cooling drum, and the electrostatic application adhesion method or the liquid application adhesion method is preferably employed. The electrostatic application contact method is generally such that a linear electrode is stretched on the upper surface of a sheet in a direction perpendicular to the flow of the sheet.
By applying a DC voltage of about 5 to 10 kV to the electrodes, a static charge is applied to the sheet to improve the adhesion between the sheet and the drum. The liquid application adhesion method refers to the whole or a part of the surface of the rotary cooling drum (for example,
This is a method of improving the adhesion between the drum and the sheet by uniformly applying the liquid only to the portions in contact with both ends of the drum. In the present invention, both may be used as needed.
【００１５】二軸方向の延伸においては、先ず、前記の
未延伸シ−トを一方向にロ−ル又はテンタ−方式の延伸
機により延伸する。延伸温度は、通常７０〜１２０℃、
好ましくは８０〜１１０℃であり、延伸倍率は、通常
２．５〜７倍、好ましくは３．０〜６倍である。次い
で、一段目の延伸方向と直交する方向に延伸を行う。延
伸温度は、通常７０〜１２０℃、好ましくは８０〜１１
５℃であり、延伸倍率は、通常３．０〜７倍、好ましく
は３．５〜６倍である。そして、引き続き、１７０〜２
５０℃の温度で緊張下または３０％以内の弛緩下で熱処
理を行い、二軸配向フィルムを得る。In the biaxial stretching, the unstretched sheet is first stretched in one direction by a roll or tenter type stretching machine. The stretching temperature is usually 70 to 120 ° C,
Preferably it is 80-110 degreeC, and a draw ratio is 2.5-7 times normally, Preferably it is 3.0-6 times. Next, stretching is performed in a direction orthogonal to the stretching direction of the first stage. The stretching temperature is usually 70 to 120 ° C, preferably 80 to 11 ° C.
The stretching ratio is usually 3.0 to 7 times, and preferably 3.5 to 6 times. And, continuously, 170-2
Heat treatment is performed at a temperature of 50 ° C. under tension or relaxation within 30% to obtain a biaxially oriented film.
【００１６】上記の延伸においては、一方向の延伸を２
段階以上で行う方法を採用することも出来る。その場
合、最終的に二方向の延伸倍率が夫々上記範囲となる様
に行うのが好ましい。また、前記の未延伸シ−トを面積
倍率が１０〜４０倍になる様に同時二軸延伸を行うこと
も可能である。更に、必要に応じて熱処理を行う前また
は後に再度縦および／または横方向に延伸してもよい。In the above stretching, the stretching in one direction is performed by 2
It is also possible to adopt a method of performing the above steps. In that case, it is preferable that the stretching is performed so that the stretching ratio in the two directions finally falls within the above range. It is also possible to simultaneously biaxially stretch the unstretched sheet so that the area magnification becomes 10 to 40 times. Further, if necessary, the film may be stretched in the longitudinal and / or transverse directions again before or after the heat treatment.
【００１７】本発明において、フィルムは、厚さが５〜
５０μｍ、レターデーション（Ｒｅｔａｒｄａｔｉｏ
ｎ）値が３０〜１０，０００ｎｍでなければならない。
フィルムの厚さが５μｍ未満の場合は、液晶表示板の表
面保護性が低下する他、耐摩耗性層形成工程や粘着層形
成工程における取扱性などが悪くなり、また、フィルム
の厚さが５０μｍを超える場合は、レターデーション値
の上昇、全光線透過率の低下により、液晶表示板の表示
能力、色相、コントラスト、異物混入などの光学的評価
を伴う検査を行う場合に支障を来す。一方、レターデー
ション値が３０ｎｍ未満の場合は、フィルムの耐薬品性
が悪化し、１０，０００ｎｍを超える場合は、フィルム
の配向軸の角度（θ３）によっては、偏光板と保護フィ
ルムとの間でクロスニコルの状態となり消光状態とな
る。フィルムの厚さは、好ましくは１０μｍ〜４０μｍ
であり、レターデーション値は、好ましくは５０〜５０
００ｎｍ、更に好ましくは１００〜２０００ｎｍであ
る。In the present invention, the film has a thickness of 5 to 5.
50 μm, retardation (Retardatio)
n) The value must be between 30 and 10,000 nm.
When the thickness of the film is less than 5 μm, the surface protection of the liquid crystal display panel is deteriorated, and the handleability in the abrasion-resistant layer forming step and the adhesive layer forming step is deteriorated. In the case of exceeding, the increase of the retardation value and the decrease of the total light transmittance hinder the inspection when the optical performance such as the display capability, hue, contrast, and foreign matter inclusion of the liquid crystal display panel is evaluated. On the other hand, when the retardation value is less than 30 nm, the chemical resistance of the film deteriorates. When the retardation value exceeds 10,000 nm, the distance between the polarizing plate and the protective film depends on the angle (θ3) of the orientation axis of the film. It becomes a cross Nicol state and becomes an extinction state. The thickness of the film is preferably 10 μm to 40 μm
And the retardation value is preferably 50 to 50.
00 nm, more preferably 100 to 2000 nm.
【００１８】本発明において、耐摩耗性層の構成材料と
しては、例えば、各種の架橋性樹脂、金属酸化物、硬質
炭素材料などが挙げられるが、通常は、架橋性樹脂が好
適に使用される。架橋性樹脂の具体例としては、アクリ
ル系樹脂、ウレタン系樹脂、メラミン系樹脂、エポキシ
系樹脂、有機シリケート系樹脂の他、含ケイ素化合物と
含フッ素化合物との共重合体樹脂などが挙げられる。In the present invention, examples of the constituent material of the wear-resistant layer include various cross-linkable resins, metal oxides, and hard carbon materials. Usually, cross-linkable resins are preferably used. . Specific examples of the crosslinkable resin include an acrylic resin, a urethane resin, a melamine resin, an epoxy resin, an organic silicate resin, and a copolymer resin of a silicon-containing compound and a fluorine-containing compound.
【００１９】本発明においては、生産性などの観点か
ら、活性エネルギー線硬化樹脂が好適に使用される。活
性エネルギー線硬化樹脂としては、不飽和ポリエステル
系樹脂、アクリル系樹脂、付加重合系樹脂、チオール・
アクリルのハイブリッド系樹脂、カチオン重合系樹脂、
カチオン重合とラジカル重合のハイブリッド系樹脂など
が挙げられる。これらの中では、硬化性、耐擦傷性、表
面硬度、可撓性および耐久性などの点でアクリル系樹脂
が好ましい。In the present invention, an active energy ray-curable resin is preferably used from the viewpoint of productivity and the like. As the active energy ray-curable resin, unsaturated polyester resin, acrylic resin, addition polymerization resin, thiol
Acrylic hybrid resin, cationic polymerization resin,
Hybrid resins of cationic polymerization and radical polymerization are exemplified. Among these, acrylic resins are preferred in terms of curability, scratch resistance, surface hardness, flexibility, durability, and the like.
【００２０】上記のアクリル系樹脂は、活性エネルギー
線重合成分としてのアクリルオリゴマーと反応性希釈剤
とを含有する。そして、必要に応じ、光重合開始剤、光
重合開始助剤、改質剤などを含有する。The above acrylic resin contains an acrylic oligomer as an active energy ray polymerization component and a reactive diluent. And, if necessary, a photopolymerization initiator, a photopolymerization initiation auxiliary agent, a modifier and the like are contained.
【００２１】アクリルオリゴマーとしては、代表的に
は、アクリル系樹脂骨格に反応性のアクリロイル基また
はメタアクリロイル基が結合されたオリゴマーが挙げら
れる。その他のアクリルオリゴマーとしては、ポリエス
テル（メタ）アクリレート、エポキシ（メタ）アクリレ
ート、ウレタン（メタ）アクリレート、ポリエーテル
（メタ）アクリレート、シリコ−ン（メタ）アクリレー
ト、ポリブタジエン（メタ）アクリレート等が挙げられ
る。更に、剛直な骨格であるアクリロイル基またはメタ
アクリロイル基に、メラミン、イソシアヌール酸、環状
ホスファゼン等が結合したオリゴマーが挙げられる。A typical example of the acrylic oligomer is an oligomer having a reactive acryloyl group or methacryloyl group bonded to an acrylic resin skeleton. Other acrylic oligomers include polyester (meth) acrylate, epoxy (meth) acrylate, urethane (meth) acrylate, polyether (meth) acrylate, silicone (meth) acrylate, polybutadiene (meth) acrylate, and the like. Further, an oligomer in which melamine, isocyanuric acid, cyclic phosphazene, or the like is bonded to an acryloyl group or a methacryloyl group having a rigid skeleton is exemplified.
【００２２】反応性希釈剤は、塗布剤の媒体として塗布
工程での溶剤の機能を担うと共にそれ自体が多官能性ま
たは単官能性のアクリルオリゴマーと反応する基を有す
るため、塗膜の共重合成分となる。斯かる反応性希釈剤
の具体例としては、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、エチレングリコール（メタ）アクリレート、プ
ロピレングリコールジ（メタ）アクリレート、（メタ）
アクリロイルオキシプロピルトリエトキシシラン、（メ
タ）アクリロイルオキシプロピルトリメトキシシラン等
が挙げられる。The reactive diluent functions as a solvent in the coating process as a medium for the coating agent, and itself has a group that reacts with a polyfunctional or monofunctional acrylic oligomer. Component. Specific examples of such a reactive diluent include pentaerythritol tri (meth)
Acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol tri (meth) acrylate, dipentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, trimethylolpropanetri (Meth) acrylate, ethylene glycol (meth) acrylate, propylene glycol di (meth) acrylate, (meth)
Acryloyloxypropyltriethoxysilane, (meth) acryloyloxypropyltrimethoxysilane and the like can be mentioned.
【００２３】光重合開始剤としては、例えば、２，２−
エトキシアセトフェノン、１−ヒドロキシシクロヘキシ
ルフェニルケトン、ジベンゾイル、ベンゾイン、ベンゾ
インメチルエーテル、ベンゾインエチルエーテル、ベン
ゾインイソプロピルエーテル、ｐ−クロロベンゾフェノ
ン、ｐ−メトキシベンゾフェノン、ミヒラーケトン、ア
セトフェノン、２−クロロチオキサントン、アントラキ
ノン、フェニルジスルフィド、２−メチル−［４−（メ
チルチオ）フェニル］−２−モルフォリノ−１−プロパ
ノン等が挙げられる。Examples of the photopolymerization initiator include, for example, 2,2-
Ethoxyacetophenone, 1-hydroxycyclohexyl phenyl ketone, dibenzoyl, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, p-chlorobenzophenone, p-methoxybenzophenone, Michler's ketone, acetophenone, 2-chlorothioxanthone, anthraquinone, phenyl disulfide, 2-methyl- [4- (methylthio) phenyl] -2-morpholino-1-propanone and the like.
【００２４】光重合開始助剤としては、トリエチルアミ
ン、トリエタノールアミン、２−ジメチルアミノエタノ
ール等の３級アミン、トリフェニルホスフィン等のアル
キルホスフィン、β−チオジグリコール等のチオエーテ
ル等が挙げられる。Examples of the photopolymerization initiation aid include tertiary amines such as triethylamine, triethanolamine and 2-dimethylaminoethanol, alkylphosphines such as triphenylphosphine, and thioethers such as β-thiodiglycol.
【００２５】改質剤としては、塗布性改良剤、消泡剤、
増粘剤、無機系粒子、有機系粒子、潤滑剤、有機高分
子、染料、顔料、安定剤などが挙げられる。これらは、
活性エネルギー線による反応を阻害しない範囲で使用さ
れ、活性エネルギー線硬化樹脂層の特性を用途に応じて
改良することが出来る。活性エネルギー線硬化樹脂層の
組成物には、塗工時の作業性向上、塗工厚さのコントロ
ールのため、有機溶剤を配合することが出来る。As the modifier, a coating improver, an antifoaming agent,
Examples include a thickener, inorganic particles, organic particles, a lubricant, an organic polymer, a dye, a pigment, and a stabilizer. They are,
It is used in a range that does not inhibit the reaction by the active energy ray, and the properties of the active energy ray-curable resin layer can be improved according to the application. An organic solvent can be added to the composition of the active energy ray-curable resin layer in order to improve workability during coating and control the coating thickness.
【００２６】本発明においては、液晶表示板表面保護フ
ィルムに帯電防止性を付与させため下記の様な方法を採
用することが出来る。すなわち、（１）フィルムにクロ
ム蒸着などの導電性材料を蒸着する方法、（２）フィル
ムに帯電防止剤を練り込む方法、（３）フィルムに帯電
防止剤含有塗布層を設ける方法、（４）耐摩耗性層に帯
電防止剤を含有させる方法などを採用することが出来
る。これらの中では、（３）又は（４）の方法が推奨さ
れる。In the present invention, the following method can be employed to impart an antistatic property to the surface protective film of the liquid crystal display panel. That is, (1) a method of depositing a conductive material such as chromium vapor deposition on a film, (2) a method of kneading an antistatic agent into a film, (3) a method of providing an antistatic agent-containing coating layer on a film, (4) A method of including an antistatic agent in the wear-resistant layer can be employed. Among these, the method (3) or (4) is recommended.
【００２７】帯電防止剤としては、例えば、第４級アン
モニウム塩、ピリジニウム塩、第１〜３級アミノ基など
のカチオン性基を有する各種のカチオン性帯電防止剤、
スルホン酸塩基、硫酸エステル塩基、リン酸エステル塩
基、ホスホン酸塩基などのアニオン性基を有するアニオ
ン性帯電防止剤、アミノ酸系、アミノ硫酸エステル系な
どの両性帯電防止剤、アミノアルコール系、グリセリン
系、ポリエチレングリコール系などのノニオン性帯電防
止剤などの各種界面活性剤型帯電防止剤、更には、上記
の様な帯電防止剤を高分子量化した高分子型帯電防止剤
などが挙げられる。Examples of the antistatic agent include various cationic antistatic agents having a cationic group such as a quaternary ammonium salt, a pyridinium salt, and a tertiary to tertiary amino group.
Anionic antistatic agents having anionic groups such as sulfonic acid groups, sulfate ester groups, phosphate ester groups, phosphonate groups, amino acid-based, aminosulfate-based amphoteric antistatic agents, amino alcohol-based, glycerin-based, Examples include various surfactant-type antistatic agents such as nonionic antistatic agents such as polyethylene glycols, and high-molecular-weight antistatic agents obtained by increasing the molecular weight of the above-described antistatic agents.
【００２８】耐摩耗性層中には、適切な剥離性を付与す
るため、シリコーン系化合物が含有させるのが好まし
い。シリコーン系化合物の種類としては、シリコーンオ
イル、シリコーン樹脂、シリコーンゴム等が挙げられ
る。シリコーンが主成分である化合物が好ましい。斯か
る化合物としては、例えば、直鎖状ジメチルポリシロキ
サンガム、有機変性ポリシロキサン等が挙げられる。It is preferable that the abrasion resistant layer contains a silicone compound in order to impart appropriate releasability. Examples of the type of the silicone compound include a silicone oil, a silicone resin, and a silicone rubber. Compounds based on silicone are preferred. Such compounds include, for example, linear dimethylpolysiloxane gum, organically modified polysiloxane, and the like.
【００２９】耐摩耗性層中のシリコーン系化合物の含有
量は、通常０．５〜６０重量％、好ましくは０．５〜５
０重量％、更に好ましくは１〜４０重量％である。シリ
コーン系化合物の含有量が６０重量％を超える場合は、
粘着テープとの接着力が低下し保護フィルムを除去する
際、粘着テープに粘着し難くなり、０．５重量％未満の
場合は、目標の偏光角または位相角に合わせてカットさ
れたものが積み重ねられて取り扱われる際、カットされ
たエッジの粘着剤が他の偏光板または位相差板の保護フ
ィルムの表面に付着することがある。The content of the silicone compound in the wear-resistant layer is usually 0.5 to 60% by weight, preferably 0.5 to 5% by weight.
0% by weight, more preferably 1 to 40% by weight. When the content of the silicone compound exceeds 60% by weight,
When the protective film is removed due to a decrease in the adhesive strength with the adhesive tape, it becomes difficult to adhere to the adhesive tape. When the content is less than 0.5% by weight, those cut to the target polarization angle or phase angle are stacked. When being handled by being handled, the cut edge adhesive may adhere to the surface of the protective film of another polarizing plate or retardation plate.
【００３０】耐摩耗性層の形成は、フィルムの一方の表
面に硬化性樹脂組成物を塗布して硬化させる方法により
行われる。塗布方法としては、リバースロールコート
法、グラビアロールコート法、ロッドコート法、エアー
ナイフコート法などを採用し得る。塗布された硬化性樹
脂組成物の硬化は、例えば、活性エネルギー線や熱によ
り行われる。活性エネルギー線としては、紫外線、可視
光線、電子線、Ｘ線、α線、β線、γ線などが使用され
る。熱源としては、赤外線ヒーター、熱オーブン等が使
用される。活性エネルギー線の照射は、通常、塗布層側
から行うが、フィルムとの密着を高めるため、塗布層の
反対面側から行ってもよい。必要に応じ、活性エネルギ
ー線を反射し得る反射板を利用してもよい。活性エネル
ギー線により硬化された皮膜は、特に耐摩耗性が良好で
ある。The formation of the abrasion-resistant layer is carried out by applying a curable resin composition to one surface of the film and curing it. As a coating method, a reverse roll coating method, a gravure roll coating method, a rod coating method, an air knife coating method, or the like can be employed. Curing of the applied curable resin composition is performed by, for example, active energy rays or heat. Ultraviolet rays, visible rays, electron beams, X-rays, α-rays, β-rays, γ-rays and the like are used as the active energy rays. As a heat source, an infrared heater, a heat oven, or the like is used. Irradiation with active energy rays is usually performed from the side of the coating layer, but may be performed from the side opposite to the coating layer in order to increase the adhesion to the film. If necessary, a reflector that can reflect active energy rays may be used. The film cured by the active energy rays has particularly good abrasion resistance.
【００３１】耐摩耗性層の厚さは、通常０．５〜１０μ
ｍ、好ましくは１〜５μｍの範囲である。厚さが０．５
μｍ未満の場合は耐摩耗性が低下し、１０μｍを超える
場合は、耐摩耗性層の硬化収縮が大きく成り、フィルム
が耐摩耗性層側にカールすることがある。The thickness of the wear-resistant layer is usually 0.5 to 10 μm.
m, preferably in the range of 1 to 5 μm. 0.5 thickness
If it is less than μm, the abrasion resistance is reduced, and if it is more than 10 μm, the curing shrinkage of the abrasion-resistant layer increases, and the film may curl toward the abrasion-resistant layer.
【００３２】本発明において、耐摩耗性層は表面抵抗率
が１×１０10Ω未満でなければならない。耐摩耗性層の
表面抵抗率が上記の値を超える場合は静電気が発生し易
くなり、ゴミの付着が多くなる。摩耗性層の表面抵抗率
は、好ましくは５×１０9Ω未満、更に好ましくは１×
１０9Ω未満である。In the present invention, the wear-resistant layer must have a surface resistivity of less than 1 × 10 10 Ω. If the surface resistivity of the abrasion-resistant layer exceeds the above value, static electricity is likely to be generated, and adhesion of dust increases. The surface resistivity of the wearable layer is preferably less than 5 × 10 9 Ω, more preferably 1 × 10 9 Ω.
It is less than 10 9 Ω.
【００３３】本発明において、耐摩耗性層のポリエステ
ルフィルムに対する摩擦係数は０．３以下であることが
好ましい。その理由は次の通りである。耐摩耗性層形成
工程を経たフィルムは、粘着層形成工程に搬入される前
に積み重ねた状態で保管される。耐摩耗性層の摩擦係数
が０．３を超える場合は、上記の保管の際、上下で接触
している耐摩耗性層とフィルムとがブロッキング（固
着）して取扱性が悪化することがある。そこで、本発明
においては、斯かる問題を回避するため、耐摩耗性層の
ポリエステルフィルムに対する摩擦係数の調節が推奨さ
れる。耐摩耗性層のポリエステルフィルムに対する摩擦
係数は、好ましくは０．２５以下である。In the present invention, the coefficient of friction of the wear-resistant layer with respect to the polyester film is preferably 0.3 or less. The reason is as follows. The films that have undergone the abrasion resistant layer forming step are stored in a stacked state before being carried into the adhesive layer forming step. When the friction coefficient of the wear-resistant layer exceeds 0.3, the above-mentioned storage may cause blocking (sticking) between the wear-resistant layer and the film that are in contact with each other at the time of storage, thereby deteriorating the handleability. . Therefore, in the present invention, in order to avoid such a problem, it is recommended to adjust the friction coefficient of the abrasion-resistant layer to the polyester film. The coefficient of friction of the wear-resistant layer with respect to the polyester film is preferably 0.25 or less.
【００３４】本発明において、耐摩耗性層の表面粗度
（Ｒａ）は０．０３μｍ以下であることが好ましい。す
なわち、耐摩耗性層の表面粗度（Ｒａ）が０．０３μｍ
を超える場合は、透明性の低下に伴い、フィルムの厚さ
及びレターデーション値が前記の範囲であっても、保護
フィルムを貼付した状態での光学的評価を伴う検査にお
いて問題を起こすことがある。そこで、本発明において
は、保護フィルムを貼付した状態での上記の検査を全く
問題なしに行うため、耐摩耗性層の表面粗度（Ｒａ）を
調節することが推奨される。耐摩耗性層の表面粗度（Ｒ
ａ）は、好ましくは０．０２５μｍ以下である。In the present invention, the surface roughness (Ra) of the wear-resistant layer is preferably not more than 0.03 μm. That is, the surface roughness (Ra) of the wear-resistant layer is 0.03 μm
If exceeds, with the decrease in transparency, even if the thickness and retardation value of the film are in the above range, it may cause a problem in an inspection involving optical evaluation in a state where the protective film is attached. . Therefore, in the present invention, it is recommended to adjust the surface roughness (Ra) of the wear-resistant layer in order to perform the above-mentioned inspection with the protective film attached without any problem. Surface roughness of the wear-resistant layer (R
a) is preferably 0.025 μm or less.
【００３５】本発明において、耐摩耗性層の後述する粘
着剤に対する剥離力が５００ｇｆ／５０ｍｍ以下である
ことが好ましい。その理由は次の通りである。本発明の
液晶表示板表面保護フィルムは、積み重ねた状態で保管
される。この保管の際、所定寸法への裁断工程におい
て、ポリエステルフィルムと離型フィルムとの間から偶
発的にはみ出した粘着層が他の保護フィルムの耐摩耗性
層に接触することがある。そして、斯かる粘着層の耐摩
耗性層への接触は、粘着剤の接着力が大きくなると、耐
摩耗性層に対する粘着剤の付着汚れの原因となる。そこ
で、斯かる問題を回避するため、本発明においては、耐
摩耗性層の後述する粘着剤に対する剥離力の調節が推奨
される。In the present invention, it is preferable that the peeling force of the abrasion-resistant layer against the pressure-sensitive adhesive described below is 500 gf / 50 mm or less. The reason is as follows. The liquid crystal display panel surface protection film of the present invention is stored in a stacked state. During this storage, the adhesive layer that accidentally protrudes from between the polyester film and the release film may come into contact with the abrasion-resistant layer of another protective film in the step of cutting to a predetermined size. The contact of the pressure-sensitive adhesive layer with the wear-resistant layer causes the adhesion of the pressure-sensitive adhesive to the wear-resistant layer when the adhesive force of the pressure-sensitive adhesive increases. Therefore, in order to avoid such a problem, in the present invention, it is recommended to adjust the peeling force of the wear-resistant layer with respect to the pressure-sensitive adhesive described later.
【００３６】本発明において、粘着層は、公知の粘着
剤、例えば、アクリル系粘着剤、ゴム系粘着剤、ブロッ
クコポリマー系粘着剤、ポリイソブチレン系粘着剤、シ
リコーン系粘着剤などから構成される。一般に、斯かる
粘着剤は、エラストマー、粘着付与剤、軟化剤（可塑
剤）、劣化防止剤、充填剤、架橋剤などの組成物として
構成される。In the present invention, the pressure-sensitive adhesive layer comprises a known pressure-sensitive adhesive, for example, an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a block copolymer-based pressure-sensitive adhesive, a polyisobutylene-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive. Generally, such a pressure-sensitive adhesive is constituted as a composition such as an elastomer, a tackifier, a softener (plasticizer), a deterioration inhibitor, a filler, and a crosslinking agent.
【００３７】エラストマーとしては、上記の各粘着剤の
種類に従って、例えば、天然ゴム、合成イソプレンゴ
ム、再生ゴム、ＳＢＲ、ブロックコポリマー、ポリイソ
ブチレン、ブチルゴム、ポリアクリル酸エステル共重合
体、シリコーンゴム等が挙げられる。As the elastomer, for example, natural rubber, synthetic isoprene rubber, reclaimed rubber, SBR, block copolymer, polyisobutylene, butyl rubber, polyacrylate copolymer, silicone rubber, etc. may be used according to the type of each of the above-mentioned adhesives. No.
【００３８】粘着付与剤としては、例えば、ロジン、水
添ロジンエステル、テルペン樹脂、芳香族変性テルペン
樹脂、水添テルペン樹脂、テルペンフェノール樹脂、脂
肪族系石油樹脂、芳香族系石油樹脂、脂還族系水添石油
樹脂、クマロン・インデン樹脂、スチレン系樹脂、アル
キルフェノール樹脂、キシレン樹脂などが挙げられる。Examples of the tackifier include rosin, hydrogenated rosin ester, terpene resin, aromatic modified terpene resin, hydrogenated terpene resin, terpene phenol resin, aliphatic petroleum resin, aromatic petroleum resin, and lipophilic resin. Group-based hydrogenated petroleum resins, coumarone-indene resins, styrene resins, alkylphenol resins, xylene resins, and the like.
【００３９】軟化剤としては、例えば、パラフィン系プ
ロセスオイル、ナフテン系プロセスオイル、芳香族系プ
ロセスオイル、液状ポリブテン、液状ポリイソブチレ
ン、液状ポリイソプレン、ジオクチルフタレート、ジブ
チルフタレート、ひまし油、トール油等が挙げられる。Examples of the softener include paraffinic process oil, naphthenic process oil, aromatic process oil, liquid polybutene, liquid polyisobutylene, liquid polyisoprene, dioctyl phthalate, dibutyl phthalate, castor oil, and tall oil. Can be
【００４０】劣化防止剤としては、例えば、芳香族アミ
ン誘導体、フェノール誘導体、有機チオ酸塩等が挙げら
れる。Examples of the deterioration inhibitor include aromatic amine derivatives, phenol derivatives, and organic thioacid salts.
【００４１】充填剤としては、例えば、亜鉛華、チタン
白、炭酸カルシウム、クレー、顔料、カーボンブラック
等が挙げられる。充填剤が含有される場合は保護フィル
ムの全光線透過率に大きく影響を与えない範囲で使用さ
れる。Examples of the filler include zinc white, titanium white, calcium carbonate, clay, pigment, carbon black and the like. When a filler is contained, it is used within a range that does not significantly affect the total light transmittance of the protective film.
【００４２】架橋剤としては、例えば、天然ゴム系粘着
剤の架橋には、イオウと加硫助剤および加硫促進剤（代
表的なものとして、ジブチルチオカーバメイト亜鉛な
ど）が使用される。天然ゴム及びカルボン酸共重合ポリ
イソプレンを原料とした粘着剤を室温で架橋可能な架橋
剤として、ポリイソシアネート類が使用される。ブチル
ゴム及び天然ゴムなどの架橋剤に耐熱性と非汚染性の特
色がある架橋剤として、ポリアルキルフェノール樹脂類
が使用される。ブタジエンゴム、スチレンブタジエンゴ
ム及び天然ゴムを原料とした粘着剤の架橋に有機過酸化
物、例えば、ベンゾイルパーオキサイド、ジクミルパー
オキサイドなどがあり、非汚染性の粘着剤が得られる。
架橋助剤として、多官能メタクリルエステル類を使用す
る。その他紫外線架橋、電子線架橋などの架橋による粘
着剤の形成がある。As a crosslinking agent, for example, sulfur and a vulcanization aid and a vulcanization accelerator (typically zinc dibutylthiocarbamate and the like) are used for crosslinking a natural rubber-based pressure-sensitive adhesive. Polyisocyanates are used as a crosslinking agent capable of crosslinking a natural rubber and a carboxylic acid copolymerized polyisoprene as raw materials at room temperature. A polyalkylphenol resin is used as a cross-linking agent such as butyl rubber and natural rubber which has characteristics of heat resistance and non-staining. Crosslinking of adhesives made from butadiene rubber, styrene-butadiene rubber and natural rubber includes organic peroxides such as benzoyl peroxide and dicumyl peroxide, and non-staining adhesives are obtained.
Polyfunctional methacrylic esters are used as a crosslinking assistant. In addition, there is formation of a pressure-sensitive adhesive by crosslinking such as ultraviolet crosslinking and electron beam crosslinking.
【００４３】粘着層の形成は、フィルムの他方の表面に
粘着剤を塗布する方法により行われる。塗布方法として
は、耐摩耗性層の形成に使用したのと同様の方法を採用
し得る。粘着層の厚さは、通常０．５〜１０μｍ、好ま
しくは１〜５μｍの範囲である。The formation of the pressure-sensitive adhesive layer is performed by applying a pressure-sensitive adhesive to the other surface of the film. As a coating method, the same method as that used for forming the wear-resistant layer can be adopted. The thickness of the adhesive layer is generally in the range of 0.5 to 10 μm, preferably 1 to 5 μm.
【００４４】本発明において、粘着層の粘着力は、耐摩
耗性層に粘着テープを押し付けて当該粘着テープを持ち
上げた際、偏光板または位相差板の表面から粘着層が二
軸配向ポリエステルフィルムと共に剥離除去される様な
範囲に調節される。この場合、偏光板または位相差板と
粘着層との間の粘着力は、５〜２００ｇｆ／５０ｍｍの
範囲にするのが好ましい。そして、粘着層の表面には、
その取扱性の便宜を図る観点から、公知の離型フィルム
が積層される。In the present invention, when the pressure-sensitive adhesive tape is pressed against the abrasion-resistant layer and the pressure-sensitive adhesive tape is lifted, the pressure-sensitive adhesive layer is removed from the surface of the polarizing plate or the retardation plate together with the biaxially oriented polyester film. It is adjusted so that it is peeled and removed. In this case, the adhesive strength between the polarizing plate or the retardation plate and the adhesive layer is preferably in the range of 5 to 200 gf / 50 mm. And on the surface of the adhesive layer,
From the viewpoint of facilitating handling, a known release film is laminated.
【００４５】上記の様に構成された本発明の積層フィル
ム（液晶表示板表面保護フィルム）は全光線透過率（Ｔ
Ｌ）が８０％、好ましくは８５％以上である。その結
果、液晶表示板の表示能力、色相、コントラスト、異物
混入などの光学的評価を伴う検査は、偏光板または位相
差板の表面に保護フィルムを貼付したまま行うことが出
来る。The laminated film (liquid crystal display panel surface protective film) of the present invention having the above-mentioned structure has a total light transmittance (T
L) is 80%, preferably 85% or more. As a result, an inspection involving optical evaluation such as display ability, hue, contrast, and contamination of a liquid crystal display panel can be performed with the protective film adhered to the surface of the polarizing plate or retardation plate.
【００４６】[0046]
【実施例】以下、本発明を実施例により更に詳細に説明
するが、本発明はその要旨を超えない限り、以下の実施
例に限定されるものではない。なお、実施例および比較
例中「部」とあるのは「重量部」を示す。また、本発明
で使用した測定法および評価基準は次の通りである。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist. In the examples and comparative examples, “parts” means “parts by weight”. The measuring methods and evaluation criteria used in the present invention are as follows.
【００４７】（１）二軸配向ポリエステルフィルムの厚
さ：シチズン時計社製ミューメトロン「４Ｍ−１００Ｐ
ＴＹＰＥ Ｖ−２」を使用してフィルムの厚さを測定
した。(1) Thickness of the biaxially oriented polyester film: Mumetron “4M-100P” manufactured by Citizen Watch Co., Ltd.
The film thickness was measured using "TYPE V-2".
【００４８】（２）二軸配向ポリエステルフィルムのレ
ターデーション値（Ｒｅ）：アタゴ光学社製アッベ式屈
折計を使用し、フィルム面内の屈折率の最大値ｎγ及び
それと直交する方向の屈折率ｎβを測定し、その差（ｎ
γ−ｎβ）を計算した。その差（ｎγ−ｎβ）に当該屈
折率を測定したフィルムの厚みを乗じてレターデーショ
ン値とした。(2) Retardation value (Re) of biaxially oriented polyester film: Using an Abbe refractometer manufactured by Atago Optical Co., Ltd., the maximum in-plane refractive index nγ and the refractive index nβ in a direction perpendicular to the film. And the difference (n
γ-nβ) was calculated. The difference (nγ−nβ) was multiplied by the thickness of the film whose refractive index was measured to obtain a retardation value.
【００４９】（３）耐摩耗性層の表面抵抗率（Ω）：三
菱油化社製「Ｈｉｒｅｓｔａ ＭＯＤＥＬ ＨＴ−２１
０」を使用し、２３℃／５０％ＲＨの雰囲気下で試料を
設置し、５００Ｖの電圧を印加し、１分間充電後（電圧
印加時間１分）の表面抵抗（Ω）を測定した。ここで使
用した電極の型は、主電極の外径１６ｍｍ、対電極の内
径４０ｍｍの同心円電極である。測定した表面固有抵抗
（Ω）に１０を乗じた値を表面抵抗率（Ω）とした。(3) Surface resistivity (Ω) of wear-resistant layer: “Hiresta Model HT-21” manufactured by Mitsubishi Yuka
Using “0”, the sample was placed in an atmosphere of 23 ° C./50% RH, a voltage of 500 V was applied, and the surface resistance (Ω) after charging for 1 minute (voltage application time of 1 minute) was measured. The type of electrode used here is a concentric electrode having an outer diameter of the main electrode of 16 mm and an inner diameter of the counter electrode of 40 mm. The value obtained by multiplying the measured surface specific resistance (Ω) by 10 was defined as the surface resistivity (Ω).
【００５０】（４）耐摩耗性層の摩擦係数：平滑なガラ
ス板上に、幅１５ｍｍ、長さ１５０ｍｍに切り出した試
料フィルムの耐摩耗性層面とポリエステルフィルム（ダ
イアホイルヘキスト社製Ｔ１００−３８）を重ね、その
上にゴム板を載せ、更にその上に荷重を載せ、２枚のフ
ィルムの接圧を０．５ｇ／ｍｍ2として、２０ｍｍ／ｍ
ｉｎの速度でフィルム同志を滑らせて摩擦力を測定し
た。５ｍｍ滑らせた点での値を計算し摩擦係数をとし
た。なお、測定は、温度２３℃、湿度５０％の雰囲気で
行なった。(4) Friction coefficient of abrasion-resistant layer: Abrasion-resistant layer surface of a sample film cut to a width of 15 mm and a length of 150 mm on a smooth glass plate and a polyester film (T100-38 manufactured by Diafoil Hoechst) , A rubber plate is placed thereon, and a load is further placed thereon, and the contact pressure of the two films is set to 0.5 g / mm 2 , and 20 mm / m 2
The frictional force was measured by sliding the films at a speed of in. The value at the point of sliding by 5 mm was calculated to be the coefficient of friction. The measurement was performed in an atmosphere at a temperature of 23 ° C. and a humidity of 50%.
【００５１】（５）耐摩耗性層の表面粗度（Ｒａ）：中
心線平均粗さＲａ（μｍ）をもって表面粗さとする。表
面粗さ測定機（（株）小坂研究所社製「ＳＥ−３Ｆ」）
を使用し次の様にして求めた。すなわち、フィルム断面
曲線からその中心線の方向に基準長さＬ（２．５ｍｍ）
の部分を抜き取り、この抜き取り部分の中心線をｘ軸、
縦倍率の方向をｙ軸として粗さ曲線ｙ＝ｆ（ｘ）で表わ
した際に次の式で与えられた値を〔μｍ〕で表わす。中
心線平均粗さは、試料フィルム表面から１０本の断面曲
線を求め、これらの断面曲線から求めた抜き取り部分の
中心線平均粗さの平均値で表わした。なお、触針の先端
半径は２μｍ、荷重は３０ｍｇとし、カットオフ値は
０．０８ｍｍとした。(5) Surface roughness (Ra) of the wear-resistant layer: The center line average roughness Ra (μm) is defined as the surface roughness. Surface roughness measuring machine (“SE-3F” manufactured by Kosaka Laboratory Co., Ltd.)
And was determined as follows. That is, a reference length L (2.5 mm) from the film cross-section curve in the direction of its center line
, And the center line of the extracted part is the x-axis,
When the direction of the vertical magnification is represented by the roughness curve y = f (x) using the y-axis as the y-axis, the value given by the following equation is represented by [μm]. The center line average roughness was obtained by calculating ten cross-sectional curves from the surface of the sample film, and expressing the average value of the center line average roughness of the sampled portion obtained from these cross-sectional curves. The tip radius of the stylus was 2 μm, the load was 30 mg, and the cutoff value was 0.08 mm.
【００５２】[0052]
【数１】 (Equation 1)
【００５３】（６）耐摩耗性層の粘着剤に対する剥離
力：耐摩耗性層上に両面粘着テープ（日東電工社製「Ｎ
ｏ．５０２」）を貼り、ゴムローラーを使用し４５０ｇ
／ｃｍの線圧で圧着し、５０ｍｍ幅に切り出し剥離力測
定用試料とした。圧着してから１時間放置後インストロ
ン型引張試験機を用いて、１８０度方向に引張速度３０
０ｍｍ／ｍｉｎ．で剥し、その応力の平均値をその試料
の剥離力とした。この試験を１０回繰り返し行い、１０
回の相加平均をもって剥離力とした。なお、この試験を
行った雰囲気は、２３℃、５０％ＲＨの標準状態であ
る。(6) Peeling force of the abrasion-resistant layer to the adhesive: A double-sided adhesive tape (Nitto Denko Corporation “N
o. 502 ") and 450g using a rubber roller
/ Cm, and cut out to a width of 50 mm to obtain a sample for peel force measurement. After leaving for 1 hour after pressing, using an Instron type tensile tester, a tensile speed of 30 in the 180-degree direction.
0 mm / min. And the average value of the stress was taken as the peeling force of the sample. This test was repeated 10 times, and
The arithmetic average of the times was taken as the peel force. The atmosphere in which this test was performed is a standard condition of 23 ° C. and 50% RH.
【００５４】（７）積層フィルムの全光線透過率（Ｔ
Ｌ）：ＪＩＳ−Ｋ７１０５に準じ、積分球式濁度計（日
本電色工業社製「ＮＤＨ−３００Ａ」）により、全光線
透過率（ＴＬ）を測定した。(7) Total light transmittance (T) of the laminated film
L): Total light transmittance (TL) was measured with an integrating sphere turbidimeter (“NDH-300A” manufactured by Nippon Denshoku Industries Co., Ltd.) according to JIS-K7105.
【００５５】（８）取扱性：耐摩耗性層形成工程や粘着
層形成工程におけるフィルムの取扱性および偏向板への
貼着時の積層フィルムの取扱性を評価した。(8) Handleability: The handleability of the film in the step of forming the abrasion-resistant layer and the step of forming the adhesive layer and the handleability of the laminated film at the time of sticking to the deflection plate were evaluated.
【００５６】（９）消光状態：クロスニコル状態の２枚
の偏向板の間に特性評価用の異物入りフィルムを配置
し、試料フィルムを通して上から全体を見た際の消光状
態の有無を観察した。(9) Light-extinguishing state: A film containing a foreign substance for evaluating characteristics was arranged between two deflection plates in a crossed Nicols state, and the presence or absence of a light-extinguishing state when the whole was viewed from above through a sample film was observed.
【００５７】（１０）耐摩耗性評価：大平理化工業社製
「ＲＵＢＢＩＮＧ ＴＥＳＴＥＲ」を使用し、６５ｍｍ
×５０ｍｍの金属製平板圧子に長繊維のセルロース不織
布を巻き付け、酢酸エチル１ｍｌをしみ込ませて耐摩耗
性層表面を１００往復こすった。その後、表面を観察
し、耐摩耗性層が殆ど変化していない場合を良好、耐摩
耗性層が脱落している場合を不良として評価した。(10) Evaluation of abrasion resistance: Using "RUBING TESTER" manufactured by Ohira Rika Kogyo Co., Ltd., 65 mm
A long fiber cellulose nonwoven fabric was wound around a 50 mm metal flat plate indenter, and 1 ml of ethyl acetate was impregnated to rub the surface of the abrasion-resistant layer 100 times. Thereafter, the surface was observed, and the case where the wear-resistant layer hardly changed was evaluated as good, and the case where the wear-resistant layer was dropped was evaluated as poor.
【００５８】（１１）ゴミ付着性：積層フィルムの耐摩
耗性層の表面にタバコの灰を落とし、１回転（３６０度
の回転）させた際の灰の付着状態を観察し、ゴミ付着性
の有無を評価した。(11) Dust adhesion: Tobacco ash was dropped on the surface of the abrasion resistant layer of the laminated film, and the state of adhesion of the ash after one rotation (360 ° rotation) was observed. The presence or absence was evaluated.
【００５９】（１２）ブロッキング性：耐摩耗性層を形
成したポリエステルフィルムを２枚重ね、下側のフィル
ムを固定し、上側のフィルムを指で押して滑らせ、耐摩
耗性層とポリエステルフィルムとの間のブロッキングの
有無を調査した。(12) Blocking property: Two polyester films each having a wear-resistant layer formed thereon are stacked, the lower film is fixed, and the upper film is pushed with a finger and slid, so that the wear-resistant layer and the polyester film are combined. The presence or absence of blocking between them was investigated.
【００６０】（１３）検査容易性：クロスニコル状態の
２枚の偏向板の間に特性評価用の異物入りフィルムを配
置し、試料フィルムを通して上から全体を見た際の異物
の見え易さを評価した。(13) Easiness of inspection: A film containing a foreign substance for property evaluation was arranged between two deflection plates in a crossed Nicols state, and the visibility of the foreign substance when the whole was viewed from above through the sample film was evaluated. .
【００６１】（１４）粘着剤付着性：耐摩耗性層の表面
にアクリル系粘着剤を擦り付け、粘着剤の付着性の有無
を評価した。(14) Adhesive adhesion: An acrylic adhesive was rubbed on the surface of the abrasion-resistant layer, and the presence or absence of adhesive adhesion was evaluated.
【００６２】製造例１（ポリエステルＡ） ジメチルテレフタレート１００部、エチレングリコール
６０部および酢酸マグネシウム・４水塩０．０９部を反
応器に採り、加熱昇温すると共にメタノールを留去し、
エステル交換反応を行い、反応開始から４時間を要して
２３０℃に昇温し、実質的にエステル交換反応を終了し
た。次いで、平均粒径１．５４μｍのシリカ粒子を０．
１部含有するエチレングリコールスラリーを反応系に添
加し、更に、エチルアシッドフォスフェート０．０４
部、酸化ゲルマニウム０．０１部を添加した後、１００
分で温度を２８０℃、圧力を１５ｍｍＨｇに達せしめ、
以後も徐々に圧力を減じて最終的に０．３ｍｍＨｇとし
た。４時間後に系内を常圧に戻しポリエステルＡを得
た。当該ポリエステルＡのシリカ粒子の含有量は０．１
重量％であった。Production Example 1 (Polyester A) 100 parts of dimethyl terephthalate, 60 parts of ethylene glycol and 0.09 part of magnesium acetate tetrahydrate were placed in a reactor, heated and heated, and methanol was distilled off.
The transesterification reaction was performed, and the temperature was raised to 230 ° C. over 4 hours from the start of the reaction, and the transesterification reaction was substantially completed. Then, silica particles having an average particle size of 1.54 μm were added to 0.1%.
1 part of an ethylene glycol slurry was added to the reaction system, and further, ethyl acid phosphate 0.04 was added.
Parts, 0.01 part of germanium oxide,
In a minute, the temperature reaches 280 ° C and the pressure reaches 15mmHg,
Thereafter, the pressure was gradually reduced to finally 0.3 mmHg. After 4 hours, the inside of the system was returned to normal pressure to obtain polyester A. The content of the silica particles of the polyester A is 0.1
% By weight.
【００６３】製造例２（ポリエステルＢ） 製造例１において、平均粒径１．５４μｍのシリカ粒子
０．１部含有するエチレングリコールスラリーの代わり
に、平均粒径０．２７μｍの酸化チタン粒子１部含有す
るエチレングリコールスラリーを使用した以外は、製造
例１と同様にしてポリエステルＢを得た。当該ポリエス
テルＢの酸化チタン粒子の含有量は、１重量％であっ
た。Production Example 2 (Polyester B) In Production Example 1, instead of ethylene glycol slurry containing 0.1 part of silica particles having an average particle diameter of 1.54 μm, 1 part of titanium oxide particles having an average particle diameter of 0.27 μm was contained. Polyester B was obtained in the same manner as in Production Example 1 except that the ethylene glycol slurry used was used. The content of the titanium oxide particles in the polyester B was 1% by weight.
【００６４】製造例３（ポリエステルフィルムＡ１） ポリエステルＡを１８０℃で４時間不活性ガス雰囲気中
で乾燥し、溶融押出機により２９０℃で溶融押出し、静
電印加密着法を使用し、表面温度を４０℃に設定した冷
却ロール上で冷却固化して未延伸シートを得た。得られ
たシートを８５℃で３．５倍縦方向に延伸した後、１０
０℃で３．７倍横方向に延伸し、更に、２３０℃にて熱
固定し、厚さ２５μｍのポリエステルフィルムＡ１を得
た。当該フィルムのレターデーション値は７００ｎｍで
あった。Production Example 3 (Polyester Film A1) Polyester A was dried at 180 ° C. for 4 hours in an inert gas atmosphere, melt-extruded at 290 ° C. by a melt extruder, and the surface temperature was adjusted using an electrostatic contact method. It was cooled and solidified on a cooling roll set at 40 ° C. to obtain an unstretched sheet. After stretching the obtained sheet 3.5 times in the longitudinal direction at 85 ° C.,
The film was stretched 3.7 times in the transverse direction at 0 ° C., and further heat-set at 230 ° C. to obtain a 25 μm-thick polyester film A1. The retardation value of the film was 700 nm.
【００６５】製造例４（ポリエステルフィルムＡ２） 製造例３と同様にして厚さ３８μｍのポリエステルフィ
ルムＡ２を得た。当該フィルムのレターデーション値は
９９０ｎｍであった。Production Example 4 (Polyester film A2) A 38 μm-thick polyester film A2 was obtained in the same manner as in Production example 3. The retardation value of the film was 990 nm.
【００６６】製造例５（ポリエステルフィルムＡ３） 製造例３と同様にして厚さ３μｍのポリエステルフィル
ムＡ３を得た。当該フィルムのレターデーション値は９
０ｎｍであった。Production Example 5 (Polyester film A3) A 3 μm-thick polyester film A3 was obtained in the same manner as in Production Example 3. The retardation value of the film is 9
It was 0 nm.
【００６７】製造例６（ポリエステルフィルムＡ４） 製造例３と同様にして厚さ７５μｍのポリエステルフィ
ルムＡ４を得た。当該フィルムのレターデーション値は
２２００ｎｍであった。Production Example 6 (Polyester Film A4) A 75 μm thick polyester film A4 was obtained in the same manner as in Production Example 3. The retardation value of the film was 2,200 nm.
【００６８】製造例７（ポリエステルフィルムＡ５） 製造例３において、縦方向に延伸した後、次の水分散体
塗布液を延伸乾燥後の塗布厚さが０．１μｍになる様に
塗布した以外は、製造例３と同様にしてポリエステルフ
ィルムＡ５を得た。得られたフィルムのレターデーショ
ン値は、７００ｎｍであった。Production Example 7 (Polyester film A5) Except for stretching in the longitudinal direction in Production Example 3, the following aqueous dispersion coating solution was applied so that the coating thickness after stretching and drying was 0.1 μm. In the same manner as in Production Example 3, a polyester film A5 was obtained. The retardation value of the obtained film was 700 nm.
【００６９】上記の水分散体塗布液は次の様にして調製
した。すなわち、先ず、ｐ−スチレンスルホン酸ナトリ
ウム塩（４０部）、ビニルスルホン酸ナトリウム塩（４
０部）、Ｎ，Ｎ’−ジメチルアミノメタクリレート（２
０部）を蒸留水中に溶解させ、６０℃で加熱攪拌しなが
ら重合開始剤として２，２’−アゾビス（２−アミノジ
プロパン）２塩酸塩を添加して重合を行い、帯電防止性
樹脂を得た。The above aqueous dispersion coating solution was prepared as follows. That is, first, p-styrenesulfonic acid sodium salt (40 parts) and vinylsulfonic acid sodium salt (4
0), N, N'-dimethylaminomethacrylate (2
0 part) was dissolved in distilled water, and 2,2′-azobis (2-aminodipropane) dihydrochloride was added as a polymerization initiator while heating and stirring at 60 ° C. to carry out polymerization, thereby preparing an antistatic resin. Obtained.
【００７０】次いで、上記の帯電防止性樹脂３０部に、
ポリウレタン樹脂（イソシアネート成分：イソホロンジ
イソシアネート、ポリオール成分：テレフタル酸、イソ
フタル酸、エチレングリコール、ジエチレングリコール
より構成されるポリエステルポリオール、鎖延長剤：
２，２−ジメチロールプロピオン酸）５０部、アクリル
樹脂（構成単位：メチルメタクリレート、Ｎ，Ｎ’−ジ
メチルアミノエチルメタクリレート、２−ヒドロキシエ
チルメタクリレート、ブチルアクリレート）１０部、３
官能水溶性エポキシ化合物５部、平均粒径０．１μｍの
コロイダルシリカを５部を配合して水分散体塗布液を調
製した。Next, 30 parts of the antistatic resin was
Polyurethane resin (isocyanate component: isophorone diisocyanate, polyol component: polyester polyol composed of terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol, chain extender:
50 parts of 2,2-dimethylolpropionic acid, 10 parts of acrylic resin (structural units: methyl methacrylate, N, N'-dimethylaminoethyl methacrylate, 2-hydroxyethyl methacrylate, butyl acrylate)
Five parts of the functional water-soluble epoxy compound and 5 parts of colloidal silica having an average particle size of 0.1 μm were blended to prepare a water dispersion coating solution.
【００７１】製造例８（ポリエステルフィルムＢ１） 製造例３において、ポリエステルＡをポリエステルＢに
変更する以外は、製造例３と同様にして、厚さが５０μ
ｍのポリエステルフィルムＢ１を得た。当該フィルムの
レターデーション値は測定不能であった。Production Example 8 (Polyester film B1) A 50 μm thick polyester film was prepared in the same manner as in Production Example 3 except that Polyester A was changed to Polyester B.
m polyester film B1 was obtained. The retardation value of the film could not be measured.
【００７２】実施例１ ジペンタエリスリトールヘキサアクリレート３０部、４
官能ウレタンアクリレート４０部、ビスフェノールＡ型
エポキシアクリレート２７部および１−ヒドロキシシク
ロヘキシルフェニルケトン３部より成る活性エネルギー
線硬化樹脂組成物と帯電防止剤として４級アンモニウム
塩基含有メタクリルイミド共重合体を９５対５の重量比
で配合し、ポリエステルフィルムＡ１の一方の表面に、
硬化後の厚さが２μｍになる様に塗布し、１２０Ｗ／ｃ
ｍのエネルギーの高圧水銀灯を使用し、照射距離１００
ｍｍにて１５秒間照射し硬化皮膜を形成した。そして、
硬化皮膜塗設面と反対側の面にアクリル系粘着剤を塗設
し積層フィルムを得た。Example 1 30 parts of dipentaerythritol hexaacrylate, 4 parts
An active energy ray-curable resin composition comprising 40 parts of a functional urethane acrylate, 27 parts of a bisphenol A type epoxy acrylate and 3 parts of 1-hydroxycyclohexyl phenyl ketone, and a methacrylimide copolymer containing a quaternary ammonium salt group as an antistatic agent in a ratio of 95: 5. Is blended in a weight ratio of, and on one surface of the polyester film A1,
Apply so that the thickness after curing becomes 2μm, 120W / c
m high-pressure mercury lamp with energy of 100 m
Irradiated at 15 mm for 15 seconds to form a cured film. And
An acrylic pressure-sensitive adhesive was applied on the surface opposite to the surface on which the cured film was applied to obtain a laminated film.
【００７３】実施例２ 実施例１において、硬化後の厚さが１μｍになる様に耐
摩耗性硬化皮膜を形成した以外は、実施例１と同様にし
て積層フィルムを得た。Example 2 A laminated film was obtained in the same manner as in Example 1 except that an abrasion-resistant cured film was formed so that the thickness after curing became 1 μm.
【００７４】実施例３ 実施例１において、ポリエステルフィルムＡ１をポリエ
ステルフィルムＡ２に変更した以外は、実施例１と同様
にして積層フィルムを得た。Example 3 A laminated film was obtained in the same manner as in Example 1, except that the polyester film A1 was changed to the polyester film A2.
【００７５】実施例４ 実施例１において、ポリエステルフィルムＡ１をポリエ
ステルフィルムＡ５に変更し、活性エネルギー線硬化樹
脂組成物に帯電防止剤として４級アンモニウム塩基含有
メタクリルイミド共重合体を配合しなかった以外は、実
施例１と同様にして積層フィルムを得た。Example 4 Example 1 was repeated except that the polyester film A1 was changed to the polyester film A5, and the methacrylimide copolymer containing a quaternary ammonium salt group was not added to the active energy ray-curable resin composition as an antistatic agent. In the same manner as in Example 1, a laminated film was obtained.
【００７６】比較例１ 実施例１において、帯電防止剤を配合しない以外は、実
施例１と同様にして積層フィルムを得た。Comparative Example 1 A laminated film was obtained in the same manner as in Example 1 except that no antistatic agent was added.
【００７７】比較例２ 実施例１において、硬化皮膜を形成しなかった以外は、
実施例１と同様にして積層フィルムを得た。Comparative Example 2 In Example 1, except that no cured film was formed,
A laminated film was obtained in the same manner as in Example 1.
【００７８】比較例３ 実施例１において、ポリエステルフィルムＡ１をポリエ
ステルフィルムＡ３に変更した以外は、実施例１と同様
にして積層フィルムを得た。ところが、フィルム全体に
しわが入り、実用上問題のレベルであった。Comparative Example 3 A laminated film was obtained in the same manner as in Example 1, except that the polyester film A1 was changed to the polyester film A3. However, the entire film was wrinkled, which was at a practically problematic level.
【００７９】比較例４ 実施例１において、ポリエステルフィルムＡ１をポリエ
ステルフィルムＡ４に変更した以外は、実施例１と同様
にして積層フィルムを得た。Comparative Example 4 A laminated film was obtained in the same manner as in Example 1, except that the polyester film A1 was changed to the polyester film A4.
【００８０】比較例５ 実施例１において、ポリエステルフィルムＡ１をポリエ
ステルフィルムＢ１に変更した以外は、実施例１と同様
にして積層フィルムを得た。Comparative Example 5 A laminated film was obtained in the same manner as in Example 1, except that the polyester film A1 was changed to the polyester film B1.
【００８１】実施例１〜４及び比較例１〜５の結果を表
１及び表２に示す。Tables 1 and 2 show the results of Examples 1 to 4 and Comparative Examples 1 to 5.
【００８２】[0082]
【表１】 [Table 1]
【００８３】[0083]
【表２】 [Table 2]
【００８４】製造例９（ポリエステルＣ） 製造例１において、平均粒径１．５４μｍのシリカ粒子
を０．１部含有するエチレングリコールスラリーの代り
に、平均粒径１．５４μｍのシリカ粒子を０．０７５部
含有するエチレングリコールスラリーを使用した以外
は、製造例１と同様にしてポリエステルＣを得た。当該
ポリエステルＣのシリカ粒子の含有量は、０．０７５重
量％であった。Production Example 9 (Polyester C) In Production Example 1, instead of the ethylene glycol slurry containing 0.1 part of silica particles having an average particle size of 1.54 μm, silica particles having an average particle size of 1.54 μm were added. Polyester C was obtained in the same manner as in Production Example 1, except that an ethylene glycol slurry containing 075 parts was used. The content of the silica particles of the polyester C was 0.075% by weight.
【００８５】製造例１０（ポリエステルＤ） 製造例１において、平均粒径１．５４μｍのシリカ粒子
を０．１部含有するエチレングリコールスラリーの代り
に、平均粒径１．５４μｍのシリカ粒子を０．２部含有
するエチレングリコールスラリーを使用した以外は、製
造例１と同様にしてポリエステルＤを得た。当該ポリエ
ステルＤのシリカ粒子の含有量は、０．２重量％であっ
た。Production Example 10 (Polyester D) In Production Example 1, silica particles having an average particle size of 1.54 μm were replaced with 0.1% silica particles containing 0.1 part of silica particles having an average particle size of 1.54 μm. Polyester D was obtained in the same manner as in Production Example 1, except that an ethylene glycol slurry containing 2 parts was used. The content of the silica particles of the polyester D was 0.2% by weight.
【００８６】製造例１１（ポリエステルルムフィルム
Ｃ） 製造例３において、ポリエステルＡをポリエステルＣに
変更する以外は、製造例３と同様にして、厚さが２５μ
ｍのポリエステルフィルムＣを得た。当該フィルムのレ
ターデーション値は７００ｎｍであった。Production Example 11 (Polyester film C) A 25 μm thick film was produced in the same manner as in Production Example 3 except that Polyester A was changed to Polyester C.
m of polyester film C was obtained. The retardation value of the film was 700 nm.
【００８７】製造例１２（ポリエステルルムフィルム
Ｄ） 製造例３において、ポリエステルＡをポリエステルＤに
変更する以外は、製造例３と同様にして、厚さが２５μ
ｍのポリエステルフィルムＤを得た。当該フィルムのレ
ターデーション値は７００ｎｍであった。Production Example 12 (Polyester film D) A 25 μm thick film was produced in the same manner as in Production Example 3 except that polyester A was changed to polyester D.
m polyester film D was obtained. The retardation value of the film was 700 nm.
【００８８】実施例５ 実施例１において、ポリエステルフィルムＡ１をポリエ
ステルフィルムＣに変更し、そして、次の硬化皮膜用塗
布剤を使用した以外は、実施例１と同様にして積層フィ
ルムを得た。硬化皮膜用塗布剤としては、実施例１で使
用した塗布剤（活性エネルギー線硬化樹脂組成物と帯電
防止剤の混合物）と直鎖状ジメチルポリシロキサンガム
とを９５対５の重量比で配合して調製した塗布剤を使用
した。Example 5 A laminated film was obtained in the same manner as in Example 1 except that the polyester film A1 was changed to the polyester film C, and the following coating agent for a cured film was used. As the coating agent for the cured film, the coating agent used in Example 1 (a mixture of the active energy ray-curable resin composition and the antistatic agent) and the linear dimethylpolysiloxane gum were blended in a weight ratio of 95: 5. The coating agent prepared in this way was used.
【００８９】実施例６ 実施例５において、硬化後の厚さが１μｍになる様に耐
摩耗性硬化皮膜を形成した以外は、実施例５と同様にし
て積層フィルムを得た。Example 6 A laminated film was obtained in the same manner as in Example 5, except that an abrasion-resistant cured film was formed so that the thickness after curing became 1 μm.
【００９０】実施例７ 実施例５において、次の硬化皮膜用塗布剤に変更した以
外は、実施例５と同様にして積層フィルムを得た。硬化
皮膜用塗布剤としては、実施例１で使用した塗布剤（活
性エネルギー線硬化樹脂組成物と帯電防止剤の混合物）
と直鎖状ジメチルポリシロキサンガムとを９８対２の重
量比で配合して調製した塗布剤を使用した。Example 7 A laminated film was obtained in the same manner as in Example 5, except that the following coating agent for a cured film was used. As the coating agent for the cured film, the coating agent used in Example 1 (a mixture of the active energy ray-curable resin composition and the antistatic agent)
And a linear dimethylpolysiloxane gum in a weight ratio of 98: 2.
【００９１】実施例５〜７の結果を表３及び表４に示
す。The results of Examples 5 to 7 are shown in Tables 3 and 4.
【００９２】[0092]
【表３】 [Table 3]
【００９３】[0093]
【表４】 [Table 4]
【００９４】[0094]
【発明の効果】以上説明した本発明によれば、取扱性に
優れ、光学的評価を伴う液晶表示板の検査が容易であ
り、液晶表示板へのゴミの付着防止に優れる等の特性を
有する、液晶表示板表面保護フィルムが提供される。According to the present invention described above, the liquid crystal display panel has excellent characteristics such as excellent handleability, easy inspection of the liquid crystal display panel with optical evaluation, and excellent prevention of dust adherence to the liquid crystal display panel. And a liquid crystal display panel surface protective film.
Claims (9)
面に貼着して使用される液晶表示板表面保護フィルムで
あって、厚さが５〜５０μｍの二軸配向ポリエステルフ
ィルムの一方の表面に耐摩耗性層が設けられ且つ他方の
表面に粘着層が設けられた積層フィルムから成り、上記
の二軸配向ポリエステルフィルムはレターデーション値
が３０〜１０，０００ｎｍであり、上記の耐摩耗性層は
表面抵抗率が１×１０10Ω未満であり、上記の積層フィ
ルムは全光線透過率が８０％以上であることを特徴とす
る液晶表示板表面保護フィルム。1. A liquid crystal display panel surface protective film used by being adhered to the surface of a polarizing plate or a phase difference plate of a liquid crystal display plate, wherein one of a biaxially oriented polyester film having a thickness of 5 to 50 μm is used. The biaxially oriented polyester film has a retardation value of 30 to 10,000 nm, and is formed of a laminated film having a wear-resistant layer provided on one surface and an adhesive layer provided on the other surface. The layer has a surface resistivity of less than 1 × 10 10 Ω, and the laminated film has a total light transmittance of 80% or more.
から成る請求項１に記載のフィルム。2. The film according to claim 1, wherein the abrasion-resistant layer comprises an active energy ray-curable resin.
ている請求項１又は２に記載のフィルム。3. The film according to claim 1, wherein abrasion resistance is provided via an antistatic layer.
項１又は２に記載のフィルム。4. The film according to claim 1, wherein the abrasion-resistant layer contains an antistatic agent.
有されている請求項１〜４の何れかに記載のフィルム。5. The film according to claim 1, wherein the abrasion-resistant layer contains a silicone compound.
する摩擦係数が０．３以下である請求項１〜５の何れか
に記載のフィルム。6. The film according to claim 1, wherein the coefficient of friction of the wear-resistant layer with respect to the polyester film is 0.3 or less.
３μｍ以下である請求項１〜６の何れかに記載のフィル
ム。7. The wear-resistant layer having a surface roughness (Ra) of 0.0
The film according to any one of claims 1 to 6, which has a thickness of 3 µm or less.
着剤、ブロックコポリマー系粘着剤、ポリイソブチレン
系粘着剤およびシリコーン系粘着剤の群から選ばれる少
なくとも１種で構成されている請求項１〜７の何れかに
記載のフィルム。8. The pressure-sensitive adhesive layer is composed of at least one selected from the group consisting of an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a block copolymer-based pressure-sensitive adhesive, a polyisobutylene-based pressure-sensitive adhesive and a silicone-based pressure-sensitive adhesive. The film according to any one of claims 1 to 7.
ている請求項１〜８の何れかに記載のフィルム。9. The film according to claim 1, wherein a release film is laminated on the surface of the adhesive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19495498A JP4106749B2 (en) | 1997-06-25 | 1998-06-25 | LCD panel surface protective film |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9-168480 | 1997-06-25 | ||
| JP16848097 | 1997-06-25 | ||
| JP19495498A JP4106749B2 (en) | 1997-06-25 | 1998-06-25 | LCD panel surface protective film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1170629A true JPH1170629A (en) | 1999-03-16 |
| JP4106749B2 JP4106749B2 (en) | 2008-06-25 |
Family
ID=26492172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19495498A Expired - Lifetime JP4106749B2 (en) | 1997-06-25 | 1998-06-25 | LCD panel surface protective film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4106749B2 (en) |
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1998
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