JP2003266622A - Optical laminated polyester film - Google Patents
Optical laminated polyester filmInfo
- Publication number
- JP2003266622A JP2003266622A JP2002071741A JP2002071741A JP2003266622A JP 2003266622 A JP2003266622 A JP 2003266622A JP 2002071741 A JP2002071741 A JP 2002071741A JP 2002071741 A JP2002071741 A JP 2002071741A JP 2003266622 A JP2003266622 A JP 2003266622A
- Authority
- JP
- Japan
- Prior art keywords
- film
- particles
- polyester film
- laminated
- laminated polyester
- 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.)
- Withdrawn
Links
- 229920006267 polyester film Polymers 0.000 title claims abstract description 46
- 230000003287 optical effect Effects 0.000 title claims abstract description 7
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims description 60
- 239000010410 layer Substances 0.000 claims description 17
- 239000012798 spherical particle Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 239000010419 fine particle Substances 0.000 claims description 11
- 239000011146 organic particle Substances 0.000 claims description 8
- 239000001045 blue dye Substances 0.000 claims description 7
- 239000010954 inorganic particle Substances 0.000 claims description 7
- 239000012791 sliding layer Substances 0.000 claims description 7
- 238000001446 dark-field microscopy Methods 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 229910052732 germanium Inorganic materials 0.000 claims description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 18
- 239000010408 film Substances 0.000 description 56
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 19
- 229920000728 polyester Polymers 0.000 description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 10
- -1 etc. Substances 0.000 description 10
- 229920001225 polyester resin Polymers 0.000 description 8
- 239000004645 polyester resin Substances 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 239000001055 blue pigment Substances 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000012788 optical film Substances 0.000 description 3
- 235000011007 phosphoric acid Nutrition 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 229920001634 Copolyester Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000005250 alkyl acrylate group Chemical group 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229940082328 manganese acetate tetrahydrate Drugs 0.000 description 2
- CESXSDZNZGSWSP-UHFFFAOYSA-L manganese(2+);diacetate;tetrahydrate Chemical compound O.O.O.O.[Mn+2].CC([O-])=O.CC([O-])=O CESXSDZNZGSWSP-UHFFFAOYSA-L 0.000 description 2
- 150000002736 metal compounds Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 2
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 238000005809 transesterification reaction Methods 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- BLSQLHNBWJLIBQ-OZXSUGGESA-N (2R,4S)-terconazole Chemical compound C1CN(C(C)C)CCN1C(C=C1)=CC=C1OC[C@@H]1O[C@@](CN2N=CN=C2)(C=2C(=CC(Cl)=CC=2)Cl)OC1 BLSQLHNBWJLIBQ-OZXSUGGESA-N 0.000 description 1
- IMSODMZESSGVBE-UHFFFAOYSA-N 2-Oxazoline Chemical compound C1CN=CO1 IMSODMZESSGVBE-UHFFFAOYSA-N 0.000 description 1
- LPIQIQPLUVLISR-UHFFFAOYSA-N 2-prop-1-en-2-yl-4,5-dihydro-1,3-oxazole Chemical compound CC(=C)C1=NCCO1 LPIQIQPLUVLISR-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 description 1
- JHRWWRDRBPCWTF-UHFFFAOYSA-N captafol Chemical compound C1C=CCC2C(=O)N(SC(Cl)(Cl)C(Cl)Cl)C(=O)C21 JHRWWRDRBPCWTF-UHFFFAOYSA-N 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012769 display material Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229940097364 magnesium acetate tetrahydrate Drugs 0.000 description 1
- XKPKPGCRSHFTKM-UHFFFAOYSA-L magnesium;diacetate;tetrahydrate Chemical compound O.O.O.O.[Mg+2].CC([O-])=O.CC([O-])=O XKPKPGCRSHFTKM-UHFFFAOYSA-L 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- YXTFRJVQOWZDPP-UHFFFAOYSA-M sodium;3,5-dicarboxybenzenesulfonate Chemical compound [Na+].OC(=O)C1=CC(C(O)=O)=CC(S([O-])(=O)=O)=C1 YXTFRJVQOWZDPP-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229960000580 terconazole Drugs 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、光学用ポリエステ
ルフィルムに関する。特に、フィルム厚み均一性、透明
性、易滑性、色調に、優れたポリエステルフィルムに関
するもので、更に詳しくは、LCD、CRT、PDP、
EL等の表示機器における、反射防止フィルム、タッチ
スクリーン、拡散板等の基材用フィルムに関するもので
ある。TECHNICAL FIELD The present invention relates to an optical polyester film. In particular, it relates to a polyester film excellent in film thickness uniformity, transparency, slipperiness, and color tone, and more specifically, LCD, CRT, PDP,
The present invention relates to a film for a base material such as an antireflection film, a touch screen, and a diffusion plate in a display device such as EL.
【0002】[0002]
【従来の技術】2軸配向ポリエステルフィルムは、優れ
た強度、寸法安定性、耐薬品性などから、各種光学用フ
ィルムとして使用されている。特に、近年、LCD、C
RT、PDP、EL等の表示機器分野は、2軸ポリエス
テルの特徴を活用できる分野である、好適に用いられて
いる。しかし、近年、表示材料における、画像の精密
化、カラー化などが進み、光学用ポリエステルフィルム
に対して、フィルム厚みの均一性、透明性と易滑性の向
上、色調の無色性、の優れたものが望まれている。2. Description of the Related Art Biaxially oriented polyester films are used as various optical films because of their excellent strength, dimensional stability and chemical resistance. Especially in recent years, LCD, C
The field of display devices such as RT, PDP, and EL is a field in which the characteristics of biaxial polyester can be utilized, and is preferably used. However, in recent years, the precision and colorization of images in display materials have advanced, and the optical polyester film has excellent film thickness uniformity, improved transparency and slipperiness, and excellent color tone colorlessness. Things are desired.
【0003】[0003]
【発明が解決しようとする課題】2軸ポリエステルフィ
ルムは、そのままでは滑り性が不足し、ハンドリング性
等が不良で悪化あるため、ポリエステルフィルム中に、
一般に滑材と呼ばれる、シリカ、炭酸カルシウム、カオ
リン等の無機粒子、シリコーン、架橋ポリスチレン等の
有機粒子等を含有させ、表面に微細な突起を形成させる
ことで、滑り性を向上させる方法が行われている。しか
しながら、本方式は、ポリエステルフィルム中に、一般
的には、数百ppm以上の無機粒子、有機粒子等を含有
させる必要があるため、これら粒子の存在によって、光
が散乱したりして、ポリエステルフィルムの透明性が悪
化する、またこれら粒子によってポリエステルの分解が
助長され、ポリエステルフィルムが黄色に着色しやすい
等の課題がある。The biaxial polyester film is insufficient in slipperiness as it is, and the handling property is poor and deteriorates.
Generally, a method of improving lubricity by containing inorganic particles such as silica, calcium carbonate, kaolin, etc., organic particles such as silicone, cross-linked polystyrene, etc., and forming fine projections on the surface is carried out. ing. However, in this method, in the polyester film, it is generally necessary to contain several hundred ppm or more of inorganic particles, organic particles, and the like, and the presence of these particles causes light to scatter, resulting in a polyester. There are problems such that the transparency of the film is deteriorated and the polyester is promoted to be decomposed by these particles, so that the polyester film is easily colored yellow.
【0004】これに対して、ポリエステルの透明性を維
持するため、ポリエステルフィルム中に、前記の無機粒
子、有機粒子を含有させないで、ポリエステルフィルム
の表面に、易滑層を形成させ、透明性と易滑性のバラン
スをとる方法が考えられている。しかしながら、ポリエ
ステル中に粒子が存在しない、もしくは、あまりにも少
ないと、2軸延伸フィルムの製造の際に延伸の均一性が
良くない傾向があり、厚み、配向等の均一性が悪化しや
すい等の課題がある。On the other hand, in order to maintain the transparency of the polyester, the polyester film does not contain the above-mentioned inorganic particles and organic particles, and a slipping layer is formed on the surface of the polyester film to improve transparency. A method of balancing slipperiness has been considered. However, if there are no particles in the polyester, or if there are too few particles, the uniformity of stretching tends to be poor during the production of a biaxially stretched film, and the uniformity of thickness, orientation, etc. tends to deteriorate. There are challenges.
【0005】本発明はかかる課題を解決して、優れたフ
ィルム均一性、透明性、易滑性、色調、を有する光学用
ポリエステルフィルムを得ることを目的とする。An object of the present invention is to solve the above problems and to obtain an optical polyester film having excellent film uniformity, transparency, slipperiness and color tone.
【0006】[0006]
【課題を解決するための手段】本発明の光学用積層ポリ
エステルフィルムは、2軸配向ポリエステルフィルムを
基材とし、基材の少なくとも片面に、球状粒子を含有し
た易滑層を形成した積層フィルムであって、基材フィル
ム中には触媒金属または添加剤金属に起因した微細粒子
が存在し、暗視野顕微鏡法で基材フィルムを観察した際
に測定される微細粒子密度は、粒径1μmから10μm
の微細粒子が200から20000個/mm2であり、
粒径10μmを越える微細粒子が10個/mm2以下、
さらに積層フィルムの厚み斑が0.5〜7.0%である
ことを特徴とする。The laminated polyester film for optics of the present invention is a laminated film in which a biaxially oriented polyester film is used as a base material, and an easy sliding layer containing spherical particles is formed on at least one surface of the base material. Therefore, there are fine particles due to the catalyst metal or the additive metal in the base film, and the fine particle density measured when observing the base film by the dark field microscopy is from 1 μm to 10 μm.
Of fine particles of 200 to 20,000 particles / mm 2 ,
Fine particles with a particle size of more than 10 μm are 10 particles / mm 2 or less,
Further, the thickness unevenness of the laminated film is 0.5 to 7.0%.
【0007】本発明の積層ポリエステルフィルムの基材
である、2軸配向ポリエステルフィルムは、ポリエチレ
ンテレフタレート、ポリエチレン−2、6−ナフタレー
ト、または、これらの樹脂の構成成分を主体とする共重
合体が用いられる。The biaxially oriented polyester film, which is the base material of the laminated polyester film of the present invention, is made of polyethylene terephthalate, polyethylene-2,6-naphthalate, or a copolymer mainly composed of the constituent components of these resins. To be
【0008】2軸配向ポリエステルフィルムを形成する
ポリエステルとして、前記のポリエステルの共重合体を
用いる場合は、そのジカルボン酸成分として、アジピン
酸、セバシン酸等の脂肪族ジカルボン酸、テレフタル
酸、イソフタル酸、2、6−ナフタレンジカルボン酸等
の芳香族ジカルボン酸、トリメット酸等の多官能カルボ
ン酸が用いられる。また、グリコール成分として、ジエ
チレングリコール、トリエチレングリコール、トリメチ
レングリコール、テトラメチレングリコール、ネオペン
チルグリコール等の脂肪族グリコール、1,4−シクロ
ヘキサンジメタノール等の脂環族グリコールが用いられ
る。なお、好ましい共重合成分、量は、2軸配向ポリエ
ステルフィルムとして配向を形成、維持できれば、上記
成分、量は問わない。なお、2軸配向ポリエステルフィ
ルムは、帯電防止剤、酸化防止剤等を、本特許の効果を
妨げない範囲で含有していてもよい。When the above-mentioned polyester copolymer is used as the polyester for forming the biaxially oriented polyester film, the dicarboxylic acid component thereof is an aliphatic dicarboxylic acid such as adipic acid or sebacic acid, terephthalic acid, isophthalic acid, Aromatic dicarboxylic acids such as 2,6-naphthalenedicarboxylic acid and polyfunctional carboxylic acids such as trimetic acid are used. As the glycol component, aliphatic glycols such as diethylene glycol, triethylene glycol, trimethylene glycol, tetramethylene glycol, neopentyl glycol and alicyclic glycols such as 1,4-cyclohexanedimethanol are used. The preferred copolymerization components and amounts are not limited as long as they can form and maintain the orientation as a biaxially oriented polyester film. The biaxially oriented polyester film may contain an antistatic agent, an antioxidant, etc. within a range that does not impair the effects of the present patent.
【0009】2軸配向ポリエステルフィルムの製造法に
ついては、特に限定されるものではない。例えば、溶融
したポリエステル樹脂を回転冷却ドラム上に、静電印荷
法、エアーナイフ法等手段で、シート状に押し出し、極
力厚み斑のない未延伸シートとする。続いて、得られた
未延伸シートを、80〜120℃に加熱して、縦方向
(長手方向)に、2.8〜4.5倍延伸した後、80〜
180℃に加熱されたゾーンで、横方向(幅方向)に
2.8〜4.5倍延伸する。更に、160〜240℃の
熱処理ゾーンで熱処理を実施する。なお、この熱処理工
程中で、必要に応じて、縦方向 及び/または横方向に
弛緩処理をしてもよい。なお、延伸工程に関しては、上
記の縦、横の逐次延伸以外に、縦縦横、縦横縦、縦横縦
横の多段逐次延伸法、もしくは、縦横同時2軸延伸法を
用いてもよい。The method for producing the biaxially oriented polyester film is not particularly limited. For example, the molten polyester resin is extruded into a sheet shape on a rotating cooling drum by a method such as an electrostatic printing method or an air knife method to obtain an unstretched sheet having no unevenness in thickness as much as possible. Subsequently, the obtained unstretched sheet is heated to 80 to 120 ° C. and stretched 2.8 to 4.5 times in the longitudinal direction (longitudinal direction), and then 80 to
In the zone heated to 180 ° C., the film is stretched 2.8 to 4.5 times in the transverse direction (width direction). Further, heat treatment is performed in a heat treatment zone of 160 to 240 ° C. In this heat treatment step, relaxation treatment may be performed in the longitudinal direction and / or the lateral direction, if necessary. Regarding the stretching step, in addition to the above-described sequential stretching in the longitudinal and transverse directions, a multi-stage sequential stretching method of vertical and horizontal, vertical and horizontal, vertical and horizontal and vertical or a simultaneous vertical and horizontal biaxial stretching method may be used.
【0010】本発明の2軸配向ポリエステルフィルムの
基材には、ポリエステル合成時に添加した触媒金属や添
加剤金属に起因した微細粒子を適切な量含有する。こう
した粒子を含有させる方法としては、例えば、エステル
交換反応時においてマンガン、マグネシウム、カルシウ
ム、リチウム、ナトリウム、カリウム等の金属化合物、
リン化合物、また、重縮合反応時に、アンチモン、ゲル
マニウム、チタン等金属化合物を添加し、ポリエステル
合成中に、ポリエステル構成成分であるジカルボン酸成
分、あるいはグリコール成分と反応させて、上記金属成
分が単独、もしくは複合状態で有機成分と結びついた粒
子を形成、含有させる方法が挙げられる。こうした粒子
が、ポリエステル構成成分であるジカルボン酸成分ある
いはグリコール成分と結びついている場合、屈折率が比
較的ポリエステルフィルムの屈折率に近い特徴を有する
ことになる。また、これらの粒子は、上記の金属化合物
の種類、量、組み合わせ、もしくは、ポリエステル合成
時の温度、反応速度等を適切に選択することで、粒子の
大きさ、量が制御できる特徴を有する。The substrate of the biaxially oriented polyester film of the present invention contains an appropriate amount of fine particles derived from the catalyst metal or additive metal added during the polyester synthesis. As a method of containing such particles, for example, a metal compound such as manganese, magnesium, calcium, lithium, sodium, and potassium during a transesterification reaction,
Phosphorus compound, also, during the polycondensation reaction, antimony, germanium, such as titanium metal compound is added, during the polyester synthesis, dicarboxylic acid component which is a polyester constituent component, or by reacting with a glycol component, the metal component alone, Alternatively, there may be mentioned a method of forming and containing particles bound to an organic component in a composite state. When such particles are associated with a dicarboxylic acid component or a glycol component, which are polyester constituent components, the refractive index is relatively close to that of the polyester film. Further, these particles are characterized in that the size and amount of the particles can be controlled by appropriately selecting the kind, amount and combination of the above metal compounds, or the temperature and reaction rate during polyester synthesis.
【0011】なお、本発明の2軸配向ポリエステルフィ
ルムの基材には、必要に応じて、ごく少量である、3〜
50重量ppmの量であるならば、上記の触媒金属や添
加剤金属に起因した粒子以外に、平均粒径が2μm以下
のシリカ、カオリン、アルミナ、リン酸カルシウム等の
無機不活性粒子、球状架橋ポリアクリル、球状架橋ポリ
スチレン、球状シリコーン等の有機粒子を含有していて
も良い。また、球状粒子を含有した易滑層を積層したフ
ィルムを溶融し、チップ化した回収ポリマーを、ポリエ
ステル合成して得られた新規ポリマーと混合使用するこ
とも、2軸配向ポリエステルフィルム基材に、少量の粒
子が混在するが、これもごく少量であるため、可能であ
る。The base material of the biaxially oriented polyester film of the present invention may contain a very small amount of 3 to 3, if necessary.
If the amount is 50 ppm by weight, in addition to the particles derived from the above-mentioned catalyst metal and additive metal, inorganic inert particles such as silica, kaolin, alumina and calcium phosphate having an average particle size of 2 μm or less, spherical crosslinked polyacryl It may also contain organic particles such as spherical crosslinked polystyrene and spherical silicone. In addition, a film obtained by laminating an easy-sliding layer containing spherical particles is melted, and the recovered polymer that is made into chips can also be used as a mixture with a novel polymer obtained by polyester synthesis, in a biaxially oriented polyester film substrate. A small amount of particles are mixed, but this is possible because it is also a very small amount.
【0012】触媒金属や添加剤金属に起因した微細粒子
量は、暗視野顕微鏡法(詳細は後述)で測定したとき観
察されるものを測定する。また、上に記載のごとく、ご
く少量の無機不活性粒子、有機不活性も、暗視野顕微鏡
で同時に観察されるが、触媒金属、添加剤金属に起因し
た粒子とみなして、測定してよい。粒子量は、粒径10
μm以上の粒子が10個/mm2以下、粒径1μmから
10μmの粒子が200から20000個/mm2であ
る。好ましくは、粒径1μmから10μmの粒子が30
0から15000個/mm2、更に好ましくは500か
ら10000個/mm2である。The amount of fine particles due to the catalyst metal and the additive metal is determined by the amount observed when measured by dark field microscopy (details will be described later). Further, as described above, a very small amount of inorganic inactive particles and organic inactive particles are simultaneously observed by a dark field microscope, but they may be regarded as particles due to the catalyst metal and the additive metal and may be measured. The amount of particles is 10
The number of particles having a size of μm or more is 10 particles / mm 2 or less, and the number of particles having a particle size of 1 μm to 10 μm is 200 to 20000 particles / mm 2 . Preferably, 30 particles having a particle size of 1 μm to 10 μm are used.
It is 0 to 15000 pieces / mm 2 , and more preferably 500 to 10000 pieces / mm 2 .
【0013】粒径10μmを超える超える粒子が、10
個/mm2を超えて存在すると、光学用フィルムに用い
たとき、画面に異物状欠点として目立つ。一方、粒径1
μmから10μmの粒子量が、200個/mm2に満た
ないときは、2軸延伸フィルムの製造の際に、粒子によ
る応力集中防止効果が不足する等の原因により、延伸の
均一性不良の傾向があり、厚み、配向等の斑が発生しや
すい。一方、粒子量が20000個/mm2を超える
と、フィルム中の粒子量が多すぎるため、粒子による光
の散乱等によりフィルムの透明性が悪化し、光学用フィ
ルムに用いたとき、画面がぼやける等の課題が発生す
る。10 particles having a particle size exceeding 10 μm
When it is present in an amount of more than the number of pieces / mm 2 , it is conspicuous as a foreign matter-like defect on the screen when used in an optical film. On the other hand, particle size 1
When the amount of particles from μm to 10 μm is less than 200 particles / mm 2 , the tendency of poor uniformity of stretching due to insufficient effect of preventing stress concentration by particles during production of biaxially stretched film. Therefore, unevenness in thickness and orientation is likely to occur. On the other hand, when the amount of particles exceeds 20,000 particles / mm 2 , the amount of particles in the film is too large, so that the transparency of the film is deteriorated due to light scattering by particles and the screen is blurred when used for an optical film. Issues such as occur.
【0014】本発明の積層ポリエステルフィルムの厚み
斑が、0.5〜7.0%であり、好ましくは0.7から
5%、更に好ましくは、1〜4%である。厚み斑が0.
5%に満たないときは、上記の粒子を含有していても、
製膜スピード等を非常に遅くする必要があり、生産性が
劣り、商業生産は困難となる。一方、7.0%を超える
と、フィルム厚みの均一性不足のため、反射防止フィル
ム、タッチスクリーン、拡散板等の基材用フィルムとし
て使用したとき、画像が歪む、色斑が発生する等の問題
が発生する。The thickness unevenness of the laminated polyester film of the present invention is 0.5 to 7.0%, preferably 0.7 to 5%, more preferably 1 to 4%. Thickness unevenness is 0.
When it is less than 5%, even if it contains the above particles,
It is necessary to extremely slow down the film forming speed, etc., resulting in poor productivity and difficulty in commercial production. On the other hand, if it exceeds 7.0%, the film thickness is insufficiently uniform, and therefore, when it is used as a film for a base material such as an antireflection film, a touch screen, a diffusing plate, an image is distorted or color spots are generated. The problem occurs.
【0015】本発明の積層ポリエステルフィルムは、2
軸配向ポリエステルフィルムを基材とし、前記基材の少
なくとも片面に接着性向上を兼ねた易滑層を形成してい
る。易滑層の形成方法は特に限定されないが、好ましく
は、未延伸シート、または、1軸延伸フィルムの片面、
あるいは両面に易滑層形成する樹脂、球状粒子の混合分
散体を塗付した後、延伸、熱処理するインラインコート
法により形成される。The laminated polyester film of the present invention has 2
An axially oriented polyester film is used as a base material, and an easily slipping layer that also serves to improve adhesiveness is formed on at least one surface of the base material. The method for forming the easy-slip layer is not particularly limited, but preferably an unstretched sheet, or one side of a uniaxially stretched film,
Alternatively, it is formed by an in-line coating method in which a resin for forming an easy-slip layer and a mixed dispersion of spherical particles are applied to both surfaces, and then stretched and heat-treated.
【0016】易滑層を形成させる樹脂としては、特に限
定されないが、共重合ポリエステル系樹脂を主成分とす
ることが好ましい。共重合ポリエステル樹脂としては、
例えば、ジカルボン酸成分として、テレフタル酸、イソ
フタル酸、および5−スルホイソフタル酸ナトリウム
等、グリコール成分としてエチレングリコ−ル、テトラ
メチレングリコール、ネオペンチルグリコール等の共重
合ポリエステルがあげられる。特に、ガラス転移点が4
0〜100℃の範囲にあるポリエステル樹脂が好まし
い。また、ポリエステル樹脂と共存させる成分として、
例えば、光学用積層ポリエステルフィルムが好ましく使
用されるハードコート主成分であるアクリル系樹脂との
接着性を向上させ、かつ、易滑層の耐スクラッチ性を向
上させるために、アルキルアクリレート、アルキルアク
リレート等のモノマーを主成分とするアクリル系樹脂、
エポキシ、オキサゾリン系架橋剤を含有させたものを好
ましく用いることもできる。The resin for forming the easy-slip layer is not particularly limited, but it is preferable to use a copolyester resin as a main component. As the copolyester resin,
Examples of the dicarboxylic acid component include terephthalic acid, isophthalic acid, and sodium 5-sulfoisophthalate, and the glycol component includes copolymerized polyesters such as ethylene glycol, tetramethylene glycol, and neopentyl glycol. In particular, the glass transition point is 4
A polyester resin in the range of 0 to 100 ° C is preferable. Also, as a component to coexist with the polyester resin,
For example, in order to improve the adhesiveness with the acrylic resin which is the main component of the hard coat for which the laminated polyester film for optics is preferably used, and to improve the scratch resistance of the easy-sliding layer, alkyl acrylate, alkyl acrylate, etc. Acrylic resin whose main component is
Those containing an epoxy or oxazoline crosslinking agent can also be preferably used.
【0017】易滑層は、フィルムに滑り性を付与するた
めに、球状粒子を含有する。粒子としては、球状シリ
カ、球状アルミナ等の無機粒子、球状架橋ポリアクリ
ル、球状架橋ポリスチレン、球状シリコーン等の有機粒
子があげられる。これらの球状粒子は、一般に、粒径が
揃っている、粗大な粒子の含有量が少ないため、易滑層
に均一な、滑り性のよい微細な突起を付与することがで
きる。球状粒子として、無機粒子は、少量でも易滑性付
与に優れ、また、有機粒子は、上記特性に加えて、柔軟
な特性を有するため、易滑層から脱落した際に、フィル
ムを傷つけにくい特徴を有する。なお、球状粒子とし
て、無機粒子と有機粒子を混在させて含有されることも
好ましい。一方、粒子として、炭酸カルシウム、リン酸
カルシウム、通常のシリカ、カオリン等は、形状が塊
状、板状等と一定せず、また粒径も揃っていないため、
易滑層に均一な微細突起を付与することは困難であり、
易滑性、フィルムヘーズのバランスが取りにくい。The easy-slip layer contains spherical particles in order to impart a slip property to the film. Examples of the particles include inorganic particles such as spherical silica and spherical alumina, and organic particles such as spherical crosslinked polyacryl, spherical crosslinked polystyrene and spherical silicone. Since these spherical particles generally have a uniform particle size and a small content of coarse particles, it is possible to provide uniform, smooth and fine projections to the easy-slipping layer. As spherical particles, the inorganic particles are excellent in imparting slipperiness even in a small amount, and the organic particles have soft characteristics in addition to the above characteristics, so that the film is hard to be damaged when it is dropped from the slippery layer. Have. In addition, it is also preferable that inorganic particles and organic particles are mixed and contained as the spherical particles. On the other hand, as particles, calcium carbonate, calcium phosphate, ordinary silica, kaolin and the like, the shape is not uniform such as lumpy, plate-like, and the particle size is not uniform,
It is difficult to give uniform fine protrusions to the easy-slip layer,
It is difficult to balance slipperiness and film haze.
【0018】易滑層に含有される球状粒子の平均粒径
は、200nm以下が好ましく、更に、150nm以下
がより好まく、更に100nm以下が更に好ましい。球
状粒子の平均粒径が200nmを超えると、光りの散乱
が置きやすく、フィルムヘーズの上昇、黄色味の着色が
起こりやすい傾向がある。平均粒径が、100nm以下
の2種類以上の粒子を混合して含有させても構わない。
また、易滑層に含有される球状粒子の含有量は、40%
以下が好ましく、更に、30%以下が好ましい。含有量
が40%を超えると、フィルムヘーズの上昇、粒子の易
滑層からの脱落がおきやすい傾向がある。The average particle size of the spherical particles contained in the easy-slip layer is preferably 200 nm or less, more preferably 150 nm or less, and further preferably 100 nm or less. When the average particle diameter of the spherical particles exceeds 200 nm, light is likely to be scattered, and the film haze tends to increase and yellowish coloring tends to occur. Two or more kinds of particles having an average particle diameter of 100 nm or less may be mixed and contained.
The content of the spherical particles contained in the easy-slip layer is 40%.
The following is preferable, and 30% or less is more preferable. When the content exceeds 40%, the film haze tends to increase and the particles tend to fall off from the easy-slip layer.
【0019】本発明の積層ポリエステルフィルム厚み
は、50μmが好ましく、更に100〜250μmが好
ましい。積層ポリエステルフィルムのヘイズ値は、0.
3〜1.5%であることが好ましい。フィルムヘーズが
1.5%を超えると、表示機器等の画像の鮮明度が低下
するため好ましくない。The thickness of the laminated polyester film of the present invention is preferably 50 μm, more preferably 100 to 250 μm. The haze value of the laminated polyester film is 0.
It is preferably 3 to 1.5%. When the film haze exceeds 1.5%, the sharpness of an image on a display device or the like decreases, which is not preferable.
【0020】本発明の積層ポリエステルフィルムの透過
光測定による、カラーb*値が、−0.5〜1.5であ
ることが好ましい。カラーb*値が、−0.5に満たな
いと、表示機器等の画像の青みが強すぎる傾向があり、
また、カラーb*値が、1.5を超えると、表示機器等
の画像が黄色味の色調になる傾向があるため、好ましく
ない。The color b * value of the laminated polyester film of the present invention measured by transmitted light is preferably -0.5 to 1.5. If the color b * value is less than −0.5, the bluishness of an image on a display device tends to be too strong.
Further, if the color b * value exceeds 1.5, the image of a display device or the like tends to have a yellowish color tone, which is not preferable.
【0021】本発明の積層ポリエステルフィルムは、色
調調整のため、基材ポリエステルフィルム中、もしくは
易滑層に、これらの樹脂基材に、青色系、緑色系、赤色
系染料、顔料等を含有させることも可能である。このう
ち、青色系染料、顔料が、フィルムの黄色味を補完する
面で好ましい。青色系染料、顔料は、特に限定されるも
のでないが、カラー・インデックス・ソルベントブルー
45(Color Index Solvent Bl
ue45)等のアントラキノン系青色染料、もしくは、
600〜700nm付近に極大吸収を持つフタロシアニ
ン系青色顔料が好ましく、特に、カラー・インデックス
・ソルベントブルー45系染料が、耐熱性、ポリエステ
ルへの溶解性の面より好ましい。また、これらの染料の
含有量は、積層ポリエステルフィルムの透過光測定によ
る、カラーb*値が、−0.5〜1.5であることが好
ましいことを考慮して、設定すればよい。例えば、青色
系染料を基材ポリエステルフィルム中添加する場合は、
0.2〜5重量ppmが好ましく、また、易滑層中に含
有させる場合は、易滑層の厚みを考慮して、200〜5
000重量ppmが好ましい。In the laminated polyester film of the present invention, in order to adjust the color tone, a blue-based, green-based, red-based dye, pigment or the like is added to these resin base materials in the base polyester film or in the easy-slip layer. It is also possible. Among these, blue dyes and pigments are preferable in terms of complementing the yellow tint of the film. The blue dyes and pigments are not particularly limited, but Color Index Solvent Blue 45 (Color Index Solvent Bl)
blue dyes such as ue45), or
A phthalocyanine-based blue pigment having a maximum absorption in the vicinity of 600 to 700 nm is preferable, and a color index solvent blue 45-based dye is particularly preferable in terms of heat resistance and solubility in polyester. The content of these dyes may be set in consideration of the fact that the color b * value of the laminated polyester film measured by transmitted light is preferably −0.5 to 1.5. For example, when adding a blue dye in the base polyester film,
0.2 to 5 ppm by weight is preferable, and when it is contained in the easily slipping layer, it is 200 to 5 in consideration of the thickness of the easily slipping layer.
000 ppm by weight is preferred.
【0022】[0022]
【実施例】以下、本発明を実施例に基づいて説明する。
なお、実施例、及び比較例中における「部」は、重量部
を示す。また、本発明は、これらの実施例に限定される
ものではない。EXAMPLES The present invention will be described below based on examples.
In addition, "part" in an Example and a comparative example shows a weight part. Further, the present invention is not limited to these examples.
【0023】(1)暗視野顕微鏡法による粒子測定
積層フィルムの表面を、メチルエチルケトンで処理し
て、易滑層を除去したのち、顕微鏡(Nikon Mi
crophoto―FX)を使用して、透過暗視野測定
法にて、光源10目盛、100倍で、撮影した。得られ
た写真を、画像解析装置にて、直径が1〜10μmに観
察される粒子の個数をカウントした。(1) Particle Measurement by Dark Field Microscopy The surface of the laminated film was treated with methyl ethyl ketone to remove the easy-sliding layer, and then a microscope (Nikon Mi) was used.
The image was taken by a transmission dark-field measuring method using a photo-FX) at a light source 10 scale and 100 times. The obtained photograph was counted with an image analyzer for the number of particles observed with a diameter of 1 to 10 μm.
【0024】(2)フィルム厚み斑
アンリツ製電子マイクロメーター(KG601B)を用
いて、フィルムの幅方向、及び長さ方向の厚みを以下の
条件で測定し、その最大値と最小値の差を、フィルム厚
みで割った値を厚みrとした。
サンプル面積:長さ方向 2m、幅方向 3m
測定間隔 :長さ方向に、30cm間隔
測定速さ :5mm/秒(2) Film thickness unevenness An Anritsu electronic micrometer (KG601B) was used to measure the thickness of the film in the width direction and the length direction under the following conditions, and the difference between the maximum value and the minimum value was measured. The value divided by the film thickness was defined as the thickness r. Sample area: 2 m in the length direction, 3 m in the width direction Measurement interval: 30 cm intervals in the length direction Measurement speed: 5 mm / sec
【0025】(3)フィルムのヘイズ値
JIS−K7105規格に準じ、ヘーズメーター(日本
電色工業社製、NDH−20)を用いて測定した。(3) Haze value of film According to JIS-K7105 standard, haze value was measured using a haze meter (NDH-20 manufactured by Nippon Denshoku Industries Co., Ltd.).
【0026】(4)フィルムの透過光測定による、カラ
ーb*値
JIS―Z8722と8729規格に準じ、カラーメー
ター(日本電色工業社製、SZ−Σ90)を用いて、フ
ィルムの透過光のカラーb*値を測定した。(4) Color b * value measured by the transmitted light of the film According to JIS-Z8722 and 8729 standards, the color of the transmitted light of the film was measured using a color meter (SZ-Σ90 manufactured by Nippon Denshoku Industries Co., Ltd.). The b * value was measured.
【0027】[実施例1]
(フィルム基材用ポリエステルの合成)ジメチルテレフ
タレート:100部、エチレングリコール:65部、酢
酸マンガン4水塩:0.04部、を反応容器に仕込み、
3時間で、240℃まで昇温し、エステル交換反応を実
施した。続いて、正リン酸:0.02部、三酸化アンチ
モン0.02部を添加し、その後、3時間で、減圧下
(〜2mmHg)、290℃まで昇温し、重縮合反応を
行い、固有粘度 0.65dl/gのポリエチレンテレ
フタレート樹脂ペレットを得た。[Example 1] (Synthesis of polyester for film substrate) Dimethyl terephthalate: 100 parts, ethylene glycol: 65 parts, manganese acetate tetrahydrate: 0.04 parts were charged into a reaction vessel,
The temperature was raised to 240 ° C. in 3 hours to carry out a transesterification reaction. Subsequently, orthophosphoric acid: 0.02 part and antimony trioxide 0.02 part were added, and then, under reduced pressure (to 2 mmHg), the temperature was raised to 290 ° C. in 3 hours to carry out a polycondensation reaction to obtain a unique property. Polyethylene terephthalate resin pellets having a viscosity of 0.65 dl / g were obtained.
【0028】<易滑層用塗布液の調整>下記のポリエス
テル樹脂(イ)を65重量%、架橋剤(ロ)を20%、
球状粒子(ハ)を10重量%、濡れ剤(ニ)を5重量%
の割合で、混合に分散処理して、これらの成分の合計濃
度が8%の水系塗布液を調整した。
(イ)ポリエステル樹脂:酸成分が、2、6−ナフタレ
ンジカルボン酸 70モル%/イソフタル酸 25モル
%/5−ナトリウムスルホイソフタル酸 5モル%、グ
リコール成分が、エチレングリコール 90モル%/ジ
エチレングリコール 10モル%のポリエステル樹脂。
(ロ)架橋剤:メチルメタアクリレート 25モル%、
2−イソプロペニル−2−オキサゾリン 30モル%、
ポリエチレンオキシドメタクリレート 10モル%/ア
クリルアミド 35%で構成。
(ハ)球状粒子:球状架橋アクリル粒子(粒径 100
nm)。
(ニ)濡れ剤:ポリオキシエチレンラウリルエーテル。<Preparation of coating liquid for easy sliding layer> 65% by weight of the following polyester resin (a), 20% of a crosslinking agent (b),
10% by weight of spherical particles (C) and 5% by weight of wetting agent (D)
The mixture was dispersed and mixed at a ratio of 1 to prepare an aqueous coating liquid having a total concentration of these components of 8%. (A) Polyester resin: acid component 70 mol% 2,6-naphthalenedicarboxylic acid / isophthalic acid 25 mol% / 5-sodium sulfoisophthalic acid 5 mol%, glycol component ethylene glycol 90 mol% / diethylene glycol 10 mol % Polyester resin. (B) Cross-linking agent: methyl methacrylate 25 mol%,
2-isopropenyl-2-oxazoline 30 mol%,
Consists of 10 mol% polyethylene oxide methacrylate / 35% acrylamide. (C) Spherical particles: spherical crosslinked acrylic particles (particle size 100
nm). (D) Wetting agent: polyoxyethylene lauryl ether.
【0029】<フィルムの製膜>ポリエチレンテレフタ
レート樹脂ペレットを、140℃で、6時間減圧乾燥し
た後、押し出し機に供給し、約285℃で、溶融したポ
リエステル樹脂を回転冷却ドラム上に、静電印荷法、エ
アーナイフ法等手段で、シート状に押し出し、極力厚み
斑のない未延伸シートとした。続いて、得られたシート
を、100℃に加熱して、縦方向(長手方向)に、3.
5倍延伸し、1軸配向フィルムを得た。その後、前記の
塗布液を、リバースローラー法により、1軸配向フィル
ムの両面に塗付した。さらに、140℃に加熱されたゾ
ーンで、横方向(幅方向)に3.8倍延伸した後、22
0℃の熱処理ゾーンで熱処理を実施して、厚さ125μ
mの2軸配向積層ポリエステルフィルムを得た。フィル
ムの両面に形成された易滑層の厚みは、それぞれ、80
nmであった。<Film Forming> Polyethylene terephthalate resin pellets were dried under reduced pressure at 140 ° C. for 6 hours, then fed to an extruder, and at about 285 ° C., the molten polyester resin was electrostatically charged on a rotary cooling drum. It was extruded into a sheet by means such as a printing method and an air knife method to obtain an unstretched sheet with no unevenness in thickness. Subsequently, the obtained sheet is heated to 100 ° C., and the sheet is longitudinally (longitudinally) 3.
It was stretched 5 times to obtain a uniaxially oriented film. Then, the coating liquid was applied to both sides of the uniaxially oriented film by the reverse roller method. Further, in the zone heated to 140 ° C., after stretching 3.8 times in the transverse direction (width direction), 22
Heat treatment is performed in a heat treatment zone at 0 ° C, and the thickness is 125μ.
A biaxially oriented laminated polyester film of m was obtained. The thickness of the easy-sliding layers formed on both sides of the film is 80, respectively.
was nm.
【0030】[実施例2]実施例1における、酢酸マン
ガン4水塩を、酢酸マグネシウム4水塩とする以外は、
実施例3と同様な方法で、フィルムを得た。Example 2 Except that the manganese acetate tetrahydrate in Example 1 was changed to magnesium acetate tetrahydrate,
A film was obtained in the same manner as in Example 3.
【0031】[実施例3]実施例1における、三酸化ア
ンチモンを、テトラブトキシチタン、0.005部とす
る以外は、実施例1と同様な方法で、フィルムを得た。Example 3 A film was obtained in the same manner as in Example 1, except that the antimony trioxide in Example 1 was changed to 0.005 part of tetrabutoxytitanium.
【0032】[実施例4]実施例1における、溶融した
ポリエステル樹脂量を変えて、フィルム厚みを、175
μmとする以外は、実施例1と同様にして、フィルムを
得た。[Example 4] The film thickness was changed to 175 by changing the amount of molten polyester resin in Example 1.
A film was obtained in the same manner as in Example 1 except that the thickness was changed to μm.
【0033】[実施例5]実施例1における、塗布液中
の球状架橋アクリル粒子を、平均粒径 80nmの球状
シリカとする以外は、実施例1と同様な方法で、フィル
ムを得た。Example 5 A film was obtained in the same manner as in Example 1 except that the spherical crosslinked acrylic particles in the coating solution in Example 1 were changed to spherical silica having an average particle size of 80 nm.
【0034】[実施例6]実施例1において、青色染料
として、テラゾールブルーRLSを 0.0001部、
三酸化アンチモンに続いて、添加する以外は、実施例1
と同様な方法で、フィルムを得た。Example 6 In Example 1, 0.0001 part of Terrazol Blue RLS was used as a blue dye,
Example 1 except that antimony trioxide was added subsequent to the addition.
A film was obtained in the same manner as in.
【0035】[実施例7]実施例1における、塗布液中
に、青色染料として、テラゾールブルーRLSを、0.
1部添加する以外は、実施例1と同様な方法で、フィル
ムを得た。[Embodiment 7] In the coating liquid used in Embodiment 1, as a blue dye, terazol blue RLS was added in an amount of 0.
A film was obtained in the same manner as in Example 1 except that 1 part was added.
【0036】[比較例1]実施例1における、三酸化ア
ンチモン量を、0.10部とし、また、正リン酸を、ト
リメチルフォスフェート、0.01部とする以外は、実
施例1と同様の方法で、フィルムを得た。[Comparative Example 1] The same as Example 1 except that the amount of antimony trioxide in Example 1 was 0.10 part and the amount of orthophosphoric acid was trimethyl phosphate, 0.01 part. A film was obtained by the method of.
【0037】[比較例2]実施例1における、三酸化ア
ンチモン量を、0.01部とし、また、正リン酸量を、
0.06とする以外は、実施例1と同様な方法で、フィ
ルムを得た。Comparative Example 2 In Example 1, the amount of antimony trioxide was 0.01 part, and the amount of orthophosphoric acid was
A film was obtained in the same manner as in Example 1 except that the film thickness was 0.06.
【0038】[比較例3]実施例1における、塗布液中
の球状架橋アクリル粒子を、平均粒径 230nmの不
定形シリカとする以外は、実施例1と同様な方法で、フ
ィルムを得た。Comparative Example 3 A film was obtained in the same manner as in Example 1 except that the spherical crosslinked acrylic particles in the coating liquid in Example 1 were changed to amorphous silica having an average particle size of 230 nm.
【0039】[比較例4]実施例1において、フィルム
基材用ポリエステルに、平均粒径 0.6μmの炭酸カ
ルシウムを 0.05部添加して合成する以外は、実施
例1と同様な方法で、フィルムを得た。[Comparative Example 4] The same procedure as in Example 1 was repeated, except that 0.05 part of calcium carbonate having an average particle size of 0.6 μm was added to the polyester for the film substrate. , A film was obtained.
【0040】以上の実施例1〜7と比較例1〜4につい
て、フィルム品質を、表1に示した。実施例は、いずれ
も、フィルムの厚み斑、ヘイズ、色調に優れたものであ
った。一方、比較例は、いずれも、課題のあるものであ
った。The film qualities of the above Examples 1 to 7 and Comparative Examples 1 to 4 are shown in Table 1. In each of the examples, the film thickness unevenness, haze, and color tone were excellent. On the other hand, each of the comparative examples had problems.
【0041】[0041]
【表1】 [Table 1]
【0042】[0042]
【発明の効果】本発明によれば、優れた、フィルム厚み
の均一性、透明性と易滑性の向上、色調の無色性の光学
用ポリエステルフィルムを得ることができる。According to the present invention, it is possible to obtain an optical polyester film having excellent uniformity of film thickness, improvement of transparency and slipperiness, and colorless color tone.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) B29L 9:00 B29L 9:00 (72)発明者 水谷 圭 神奈川県相模原市小山3丁目37番19号 帝 人デュポンフィルム株式会社相模原研究セ ンター内 (72)発明者 渡部 誉之 神奈川県相模原市小山3丁目37番19号 帝 人デュポンフィルム株式会社相模原研究セ ンター内 Fターム(参考) 4F100 AA29 AB09B AB09C AB12B AB12C AB14B AB14C AB22B AB22C AK25 AK41A AK42 AT00A BA02 BA03 BA06 BA07 BA10B BA10C CA13B CA13C CA19B CA19C DE01B DE01C EJ38A GB41 JA13B JA13C JA20A JN01 YY00B YY00C 4F210 AA24 AB07 AB12 AB24 AG01 AG03 AH73 QC06 QD08 QD13 QW05 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI theme code (reference) B29L 9:00 B29L 9:00 (72) Inventor Kei Mizutani 3-37-19 Oyama, Sagamihara City, Kanagawa Human DuPont Films Co., Ltd. Sagamihara Research Center (72) Inventor Yoshiyuki Watanabe 3-37-19 Oyama, Sagamihara City, Kanagawa Teijin DuPont Films Co., Ltd. Sagamihara Research Center F-term (reference) 4F100 AA29 AB09B AB09C AB12B AB12C AB14B AB14C AB22B AB22C AK25 AK41A AK42 AT00A BA02 BA03 BA06 BA07 BA10B BA10C CA13B CA13C CA19B CA19C DE01B DE01C EJ38A GB41 JA13B JA13C JA20A JN01 YY00B YY00C 4F210 AA24 Q01 Q03 AH AB01 AB03 AB12 AB03 AB03 AB12 AB03 AB03 AB12
Claims (6)
し、基材の少なくとも片面に、球状粒子を含有した易滑
層を形成した積層フィルムであって、基材フィルム中に
は触媒に起因した微細粒子が存在し、暗視野顕微鏡法で
基材フィルムを観察した際に測定される微細粒子の密度
は、粒径1μmから10μmの微細粒子が200から2
0000個/mm2であり、粒径10μmを超える微細
粒子が10個/mm2以下、さらに積層フィルムの厚み
斑が0.5〜7.0%であることを特徴とする光学用積
層ポリエステルフィルム。1. A laminated film comprising a biaxially oriented polyester film as a base material, and an easy sliding layer containing spherical particles formed on at least one surface of the base material, wherein the base material film contains fine particles derived from a catalyst. The density of fine particles having particles present and measured when observing the substrate film by dark-field microscopy is 200 to 2 for fine particles having a particle size of 1 μm to 10 μm.
0000 pieces / mm 2, fine particles of a particle diameter exceeding 10μm is 10 / mm 2 or less, laminated polyester film for optical, characterized in that further a 0.5 to 7.0% the thickness unevenness of the laminated film .
カルシウム、リチウム、ナトリウム、カリウム、アンチ
モン、ゲルマニウム、チタン、リンのいずれかの元素を
1種類以上含有する粒子であることを特徴とする請求項
1記載の光学用積層ポリエステルフィルム。2. The fine particles are manganese, magnesium,
The laminated polyester film for optics according to claim 1, which is a particle containing at least one element selected from the group consisting of calcium, lithium, sodium, potassium, antimony, germanium, titanium and phosphorus.
子および/または有機粒子であることを特徴とする請求
項1〜2のいずれかに記載の光学用積層ポリエステルフ
ィルム。3. The laminated polyester film for optics according to claim 1, wherein the spherical particles contained in the easy-slip layer are inorganic particles and / or organic particles.
5%であることを特徴とする請求項1〜3のいずれかに
記載の光学用積層ポリエステルフィルム。4. The haze value of the laminated film is 0.3 to 1.
It is 5%, The laminated polyester film for optics in any one of Claims 1-3.
ーb*値が−0.5〜1.5であることを特徴とする請
求項1〜4のいずれかに記載の光学用積層ポリエステル
フィルム。5. The laminated polyester film for optics according to claim 1, wherein the laminated film has a color b * value of -0.5 to 1.5 as measured by transmitted light.
層中に、青色系染料を含有していることを特徴とする請
求項1〜5のいずれかに記載の光学用積層ポリエステル
フィルム。6. The laminated polyester film for optics according to claim 1, wherein a blue dye is contained in the base polyester film or the easy-slip layer.
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JP2002071741A JP2003266622A (en) | 2002-03-15 | 2002-03-15 | Optical laminated polyester film |
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JP2002071741A JP2003266622A (en) | 2002-03-15 | 2002-03-15 | Optical laminated polyester film |
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ID=29201942
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006265323A (en) * | 2005-03-23 | 2006-10-05 | Mitsubishi Polyester Film Copp | Polyester film |
JP2006265324A (en) * | 2005-03-23 | 2006-10-05 | Mitsubishi Polyester Film Copp | Polyester film |
JP2007268711A (en) * | 2006-03-30 | 2007-10-18 | Teijin Dupont Films Japan Ltd | Laminated polyester film for flexible display substrate |
JP2009208337A (en) * | 2008-03-04 | 2009-09-17 | Mitsubishi Plastics Inc | Laminated polyester film |
JP2009208339A (en) * | 2008-03-04 | 2009-09-17 | Mitsubishi Plastics Inc | Laminated polyester film |
JP2009208338A (en) * | 2008-03-04 | 2009-09-17 | Mitsubishi Plastics Inc | Laminated polyester film |
JP2009208340A (en) * | 2008-03-04 | 2009-09-17 | Mitsubishi Plastics Inc | Laminated polyester film |
JP2011251511A (en) * | 2010-06-04 | 2011-12-15 | Toyobo Co Ltd | Base film for lens sheet |
-
2002
- 2002-03-15 JP JP2002071741A patent/JP2003266622A/en not_active Withdrawn
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006265323A (en) * | 2005-03-23 | 2006-10-05 | Mitsubishi Polyester Film Copp | Polyester film |
JP2006265324A (en) * | 2005-03-23 | 2006-10-05 | Mitsubishi Polyester Film Copp | Polyester film |
JP2007268711A (en) * | 2006-03-30 | 2007-10-18 | Teijin Dupont Films Japan Ltd | Laminated polyester film for flexible display substrate |
JP2009208337A (en) * | 2008-03-04 | 2009-09-17 | Mitsubishi Plastics Inc | Laminated polyester film |
JP2009208339A (en) * | 2008-03-04 | 2009-09-17 | Mitsubishi Plastics Inc | Laminated polyester film |
JP2009208338A (en) * | 2008-03-04 | 2009-09-17 | Mitsubishi Plastics Inc | Laminated polyester film |
JP2009208340A (en) * | 2008-03-04 | 2009-09-17 | Mitsubishi Plastics Inc | Laminated polyester film |
JP2011251511A (en) * | 2010-06-04 | 2011-12-15 | Toyobo Co Ltd | Base film for lens sheet |
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