JP5673526B2 - 光学フィルムの製造方法 - Google Patents
光学フィルムの製造方法 Download PDFInfo
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- JP5673526B2 JP5673526B2 JP2011504800A JP2011504800A JP5673526B2 JP 5673526 B2 JP5673526 B2 JP 5673526B2 JP 2011504800 A JP2011504800 A JP 2011504800A JP 2011504800 A JP2011504800 A JP 2011504800A JP 5673526 B2 JP5673526 B2 JP 5673526B2
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- 238000010137 moulding (plastic) Methods 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- YAFOVCNAQTZDQB-UHFFFAOYSA-N octyl diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(=O)(OCCCCCCCC)OC1=CC=CC=C1 YAFOVCNAQTZDQB-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/58—Applying the releasing agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating agents
- B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
- B29C33/64—Silicone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/30—Making multilayered or multicoloured articles
- B29C43/305—Making multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
- B29C48/9155—Pressure rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
- B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
- B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
前記流延工程で押し出されたフィルム状の溶融物を、前記回転支持体と挟圧回転体とで挟圧する挟圧工程とを備えた光学フィルムの製造方法において、
前記挟圧回転体の表面に、前記挟圧回転体と前記フィルム状の溶融物との離型性を良くするための離型性調整剤を塗布し、
前記離型性調整剤が、前記溶融物に含まれる添加剤のうち少なくとも1つと同じ材料を含み、 前記離型性調整剤が、前記光学フィルムの内部で紫外線を吸収するために用いられるベンゾトリアゾール系紫外線吸収剤又はベンゾフェノン系紫外線吸収剤であり、
前記回転支持体の表面と水との接触角S1と、前記離型性調整剤を塗布した後の挟圧回転体の表面と水との接触角S2とが、0.5°<S2−S1<100°の関係にあること特徴とする光学フィルムの製造方法。
(液晶表示装置)
本発明の光学フィルムによって構成される位相差フィルムを含む偏光板は、通常の偏光板と比較して高い表示品質を発現させることができ、特にマルチドメイン型の液晶表示装置、より好ましくは複屈折モードによるマルチドメイン型の液晶表示装置への使用に適している。
(実施例1〜8)
(樹脂混合物)
セルロースアセテートプロピオネート 89質量%
(アセチル基置換度1.4、プロピオニル基置換度1.35、
数平均分子量60000)
トリメチロールプロパントリベンゾエート 9質量%
(可塑剤、融点85℃)
酸化防止剤(IRGANOX XP 420/FD) 0.25質量%
(チバ・ジャパン社製)
紫外線吸収剤 1.6質量%
(TINUVIN 928、チバ・ジャパン社製、融点115℃)
マット剤(シリカ微粒子) 0.15質量%
(シーホスターKEP−30:日本触媒株式会社製、平均粒径0.3μm)
なお、セルロースアセテートプロピオネートのアセチル基、プロピオニル基等のアシル基の置換度の測定は、ASTM−D817−96に規定の方法に準じて測定した。
(光学フィルムの製造)
上記ペレットを100℃で5時間乾燥させ、含水率100ppmとし、図2に示すTダイ4を取り付けた単軸押出し機1に該ペレットを供給して製膜を行った。溶融物には、樹脂以外の添加剤が11質量%含まれていた。
(光学フィルムの評価)
つぎに、実施例1〜8の光学フィルムについて、光学フィルムの全領域の表面を目視観察により、フィルム幅方向の筋状のムラ(横段ムラ)の有無を観察した。横段ムラの無いものをランク4、1本以上3本未満のものをランク3、3本以上6本未満のものをランク2、6本以上あるものをランク1とした。また、リタデーションの均一性の評価として、実施例1〜8のフィルムを、偏光板によるクロスニコル下、すなわち、直交状態(クロスニコル状態)に配置した2枚の偏光子で挟み、一方の偏光板の外側から光を当て、他方の偏光板の外側から目視で観察し、リタデーションの均一性のランク付けをした。光学フィルムの全領域に渡って、光の透過がなく、全体に均一な暗視野のものをランクA、部分的にスジ状の明暗がわずかに認められるものをランクB、部分的にスジ状の明暗が認められるものをランクC、部分的に強いスジ状の明暗が認められるものをランクDとした。横段ムラが目視により6本以上観察され、リタデーションのムラがランクDでは、製品品質上問題となる。
(比較例1)
実施例1の光学フィルムの製造方法において、タッチロール6の表面に離型性調整剤を塗布しなかった他は、実施例1と同様に作製し、評価した。
(比較例2)
実施例1の光学フィルムの製造方法において、タッチロール6の表面に離型性調整剤を塗布せず、フィルム状溶融物を落下させる前のキャストロール5の表面に実施例1で用いた離型性調整剤(T−928)を0.04μmの厚さに塗布した他は、実施例1と同様に作製し、評価した。
2 フィルター
3 スタチックミキサー
4 流延ダイ
5 キャストロール、回転支持体
6 タッチロール、挟圧回転体
7、8 冷却ロール
P1 フィルムが最初にキャストロール表面に接触した点
P2 フィルムがタッチロール表面に接触した点
P3 フィルムがキャストロールから離れる点
9 剥離ロール
10 縦延伸装置
17 フィルム
19 スリッター
20 横延伸装置
52 バックロール
53 エンボスリング
60 巻取り装置
100 離型性調整剤塗布装置
101 塗布ローラ
102 汲み上げローラ
103 規制ブレード
104 離型性調整剤
105 貯留槽
Y 溶融物
F 光学フィルム(元巻き)
Claims (5)
- 熱可塑性樹脂を含む溶融物を流延ダイから回転支持体の表面にフィルム状に押し出す流延工程と、
前記流延工程で押し出されたフィルム状の溶融物を、前記回転支持体と挟圧回転体とで挟圧する挟圧工程とを備えた光学フィルムの製造方法において、
前記挟圧回転体の表面に、前記挟圧回転体と前記フィルム状の溶融物との離型性を良くするための離型性調整剤を塗布し、
前記離型性調整剤が、前記溶融物に含まれる添加剤のうち少なくとも1つと同じ材料を含み、
前記離型性調整剤が、前記光学フィルムの内部で紫外線を吸収するために用いられるベンゾトリアゾール系紫外線吸収剤又はベンゾフェノン系紫外線吸収剤であり、
前記回転支持体の表面と水との接触角S1と、前記離型性調整剤を塗布した後の挟圧回転体の表面と水との接触角S2とが、0.5°<S2−S1<100°の関係にあること特徴とする光学フィルムの製造方法。 - 前記離型性調整剤の沸点が、150〜250℃であることを特徴とする請求項1に記載の光学フィルムの製造方法。
- 前記離型性調整剤を塗布する厚みが、0.05〜1000μmであることを特徴とする請求項1又は2に記載の光学フィルムの製造方法。
- 前記挟圧回転体が前記回転支持体に押圧した状態での前記フィルム状の溶融物の搬送張力T1と、前記挟圧回転体が前記回転支持体に押圧していない状態での前記フィルム状の溶融物の搬送張力T2との差T1−T2が、1〜250Nであることを特徴とする請求項1から3の何れか1項に記載の光学フィルムの製造方法。
- 前記熱可塑性樹脂が、セルロースエステル系樹脂であることを特徴とする請求項1から4の何れか1項に記載の光学フィルムの製造方法。
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JPH08336878A (ja) * | 1995-06-13 | 1996-12-24 | Denki Kagaku Kogyo Kk | 樹脂シートの製造方法 |
WO2000066339A1 (fr) * | 1999-04-30 | 2000-11-09 | Kyowa Hakko Kogyo Co., Ltd. | Procede et dispositif de production d'un article en resine moule |
JP2006305924A (ja) * | 2005-04-28 | 2006-11-09 | Nippon Synthetic Chem Ind Co Ltd:The | ポリビニルアルコール系フィルムの製造方法、およびポリビニルアルコール系フィルム |
JP2007313888A (ja) * | 2006-04-28 | 2007-12-06 | Konica Minolta Opto Inc | 凹凸構造が設けられた光学フィルムの製造方法、光学フィルム、ワイヤグリッド偏光子、及び位相差フィルム |
JP2008044336A (ja) * | 2006-07-20 | 2008-02-28 | Konica Minolta Opto Inc | タッチロール、光学フィルムの製造装置、及び、光学フィルムの製造方法 |
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JP2008080552A (ja) * | 2006-09-26 | 2008-04-10 | Konica Minolta Opto Inc | 光学フィルムの製造装置 |
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JPH08336878A (ja) * | 1995-06-13 | 1996-12-24 | Denki Kagaku Kogyo Kk | 樹脂シートの製造方法 |
WO2000066339A1 (fr) * | 1999-04-30 | 2000-11-09 | Kyowa Hakko Kogyo Co., Ltd. | Procede et dispositif de production d'un article en resine moule |
JP2006305924A (ja) * | 2005-04-28 | 2006-11-09 | Nippon Synthetic Chem Ind Co Ltd:The | ポリビニルアルコール系フィルムの製造方法、およびポリビニルアルコール系フィルム |
JP2007313888A (ja) * | 2006-04-28 | 2007-12-06 | Konica Minolta Opto Inc | 凹凸構造が設けられた光学フィルムの製造方法、光学フィルム、ワイヤグリッド偏光子、及び位相差フィルム |
JP2008044336A (ja) * | 2006-07-20 | 2008-02-28 | Konica Minolta Opto Inc | タッチロール、光学フィルムの製造装置、及び、光学フィルムの製造方法 |
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KR20120009430A (ko) | 2012-01-31 |
JPWO2010106901A1 (ja) | 2012-09-20 |
WO2010106901A1 (ja) | 2010-09-23 |
TWI522225B (zh) | 2016-02-21 |
KR101645760B1 (ko) | 2016-08-04 |
TW201105480A (en) | 2011-02-16 |
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