JPH0431030A - Manufacture of heat-resistant optical film - Google Patents
Manufacture of heat-resistant optical filmInfo
- Publication number
- JPH0431030A JPH0431030A JP2137109A JP13710990A JPH0431030A JP H0431030 A JPH0431030 A JP H0431030A JP 2137109 A JP2137109 A JP 2137109A JP 13710990 A JP13710990 A JP 13710990A JP H0431030 A JPH0431030 A JP H0431030A
- Authority
- JP
- Japan
- Prior art keywords
- film
- polishing
- surface roughness
- heat
- resistant optical
- 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
- 239000012788 optical film Substances 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000010408 film Substances 0.000 claims abstract description 24
- 238000005498 polishing Methods 0.000 claims abstract description 12
- 230000003746 surface roughness Effects 0.000 claims abstract description 10
- 230000009477 glass transition Effects 0.000 claims abstract description 6
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 6
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 6
- 239000004695 Polyether sulfone Substances 0.000 abstract description 4
- 229920006393 polyether sulfone Polymers 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 239000004697 Polyetherimide Substances 0.000 abstract description 2
- 239000006096 absorbing agent Substances 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000000314 lubricant Substances 0.000 abstract description 2
- 229920002492 poly(sulfone) Polymers 0.000 abstract description 2
- 229920001230 polyarylate Polymers 0.000 abstract description 2
- 229920001601 polyetherimide Polymers 0.000 abstract description 2
- 239000003381 stabilizer Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000001788 irregular Effects 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000270281 Coluber constrictor Species 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- OQZCSNDVOWYALR-UHFFFAOYSA-N flurochloridone Chemical compound FC(F)(F)C1=CC=CC(N2C(C(Cl)C(CCl)C2)=O)=C1 OQZCSNDVOWYALR-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/022—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor
-
- 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
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
- B29K2033/08—Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate
-
- 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
- B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
- B29K2079/08—PI, i.e. polyimides or derivatives thereof
- B29K2079/085—Thermoplastic polyimides, e.g. polyesterimides, PEI, i.e. polyetherimides, or polyamideimides; Derivatives thereof
-
- 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
- B29K2081/00—Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
- B29K2081/06—PSU, i.e. polysulfones; PES, i.e. polyethersulfones or derivatives thereof
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0039—Amorphous
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は耐熱性光学用フィルムの製造方法に関し、更に
詳しくは表面平滑性、外観の優れた耐熱性光学用フィル
ムの製造方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing a heat-resistant optical film, and more particularly to a method for producing a heat-resistant optical film with excellent surface smoothness and appearance. .
ここに述べる耐熱性光学用フィルムの用途としては液晶
表示素子用透明導電性フィルム、耐熱性偏光素子保護フ
ィルム、光記録媒体基・板フィルム、などがある。Applications of the heat-resistant optical film described herein include transparent conductive films for liquid crystal display elements, heat-resistant polarizing element protective films, and optical recording medium substrate/plate films.
従来これらの用途にガラス板か使用されてきたか、可撓
性、耐衝撃性の点て問題かあった。Conventionally, glass plates have been used for these purposes, but there have been problems with flexibility and impact resistance.
この問題を解決するため、耐熱性、及び光学等方性に優
れた熱可塑性樹脂フィルムをこれらの用途に応用すべく
研究を進めたところ押出し工程で発生するフィッシュア
イ・ダイラインと称するフィルム表面の突起か重大な欠
点となることかわかった。たとえばＳＴＮ型液晶方式で
は表面突起部の液晶セルギヤノブか他の部分よりも狭く
なるため色むらを生じ、またレーサー光による光ディス
クではフィルム表面の突起によって、レーサー光か屈折
し、記録トラックからはずれたり、受光ヘットに進行し
なくなる不都合か生じたりしていた。In order to solve this problem, we conducted research to apply thermoplastic resin films with excellent heat resistance and optical isotropy to these applications, and as a result, we encountered protrusions on the film surface called fisheye die lines that occur during the extrusion process. It turned out to be a serious drawback. For example, in the STN type liquid crystal system, the liquid crystal cell gear knob on the surface protrusion is narrower than other parts, resulting in uneven color, and on optical discs that use racer light, the laser light may be refracted by the protrusion on the film surface, causing it to deviate from the recording track. There was an inconvenience that the light could not advance to the light receiving head.
本発明の目的とするところは表面平滑性、外観が著しく
優れた耐熱性光学用フィルムを提供するにある。An object of the present invention is to provide a heat-resistant optical film that has excellent surface smoothness and excellent appearance.
本発明は、ガラス転移くか１８０℃以上の非晶性熱可塑
性樹脂フィルムの、少なくともその片面を研磨加工し、
表面粗さを０．１μｍ以下にすることを特徴とする耐熱
性光学用フィルムの製造方法である。The present invention involves polishing at least one side of an amorphous thermoplastic resin film having a glass transition temperature of 180°C or higher,
This is a method for producing a heat-resistant optical film, characterized in that the surface roughness is 0.1 μm or less.
本発明におけるガラス転移点か１８０℃以上の非晶性熱
可塑性樹脂としてはポリエーテルサルホン、ポリエーテ
ルイミド、ポリサルホン、ボリアリレートおよび、これ
らをブレンドした樹脂をあげることができる。Examples of the amorphous thermoplastic resin having a glass transition point of 180° C. or higher in the present invention include polyethersulfone, polyetherimide, polysulfone, polyarylate, and resins blended with these.
また、添加剤として、少量の安定剤、滑剤、紫外線吸収
剤が含まれていてもさしつかえない。Further, small amounts of stabilizers, lubricants, and ultraviolet absorbers may be included as additives.
フィルム厚みは１０μｍから５００μｍ更には５０μｍ
から３００μｍであることか加工性、可撓性の面から望
ましい。Film thickness ranges from 10μm to 500μm and even 50μm
300 μm from the viewpoint of workability and flexibility.
本発明の耐熱光学用フィルムはフィルムの表面粗さか０
．１μｍ以下であることか好ましく、更には０．０５μ
ｍ以下であることが好ましい。表面粗さが０．１μｍよ
り大きいと前述した様に、液晶表示に使用した場合に色
むらか生じる。The heat-resistant optical film of the present invention has a surface roughness of 0 or less.
．． It is preferably 1 μm or less, more preferably 0.05 μm.
It is preferable that it is below m. As mentioned above, if the surface roughness is greater than 0.1 μm, color unevenness will occur when used in a liquid crystal display.
従来の押出し法ではフィッシュアイ・ダイライン等のフ
ィルム表面の突起のために表面粗さを０．１μｍ以下に
することは困難であり、この問題を解決するために鋭意
検討した結果、フィルム表面を研磨することで平滑性を
著しく向上てきるという知見を得、本発明に至った。With conventional extrusion methods, it is difficult to reduce the surface roughness to 0.1 μm or less due to protrusions on the film surface such as fisheyes and die lines.As a result of intensive study to solve this problem, we have developed a method of polishing the film surface. The present invention was based on the finding that smoothness can be significantly improved by doing so.
研磨はフィルムを定盤上に取付けた研磨苗土で、研磨液
を介して、加圧しながら回転させることで可能である。Polishing can be done by rotating the film with a polishing soil attached to a surface plate while applying pressure through the polishing liquid.
本発明における表面粗さとは中心線平均粗さＲａとして
Ｊｕｌ−ＢＯ６０１て定義される値である。The surface roughness in the present invention is a value defined as center line average roughness Ra according to Jul-BO601.
住人化学工業■のポリエーテルサルホン樹脂二ピクトレ
ックスＰ Ｅ Ｓ ４１００Ｇ （ガラス転移点２１３
”Ｃ）を押出し法でフィルム化した。Susumu Kagaku Kogyo■ polyether sulfone resin Nipictrex PES 4100G (glass transition point 213
"C) was made into a film by extrusion.
このフィルムを定盤上に取付けた研磨苗土で研磨液（商
品名、ボリブラ １０３Ｈ不二見研磨材工薬製）を介し
て、０．１ｋｇ／ａｌの圧力をかけなから５０ｒｐｍの
速度で１分間回転した。This film was placed on a surface plate and polished using a polishing slurry (product name: Volibra 103H, manufactured by Fujimi Abrasives Co., Ltd.) for 1 minute at a speed of 50 rpm while applying a pressure of 0.1 kg/al. It rotated.
研磨前のフィルムのＲａは０．５μｍであり研磨後のフ
ィルムのＲａは０．０１ｔＩｍであった。The Ra of the film before polishing was 0.5 μm, and the Ra of the film after polishing was 0.01 tIm.
本発明で得られる耐熱性光学用フィルムは液晶表示素子
用透明導電性フィルム、耐熱性偏光素子保護フィルム、
光記録媒体基板フィルムに好適である。The heat-resistant optical film obtained by the present invention is a transparent conductive film for liquid crystal display elements, a heat-resistant polarizing element protective film,
Suitable for optical recording medium substrate films.
Claims (1)
脂フィルムの少なくともその片面を研磨加工し、表面粗
さを０．１μｍ以下にすることを特徴とする耐熱性光学
用フィルムの製造方法。(1) A method for producing a heat-resistant optical film, which comprises polishing at least one side of an amorphous thermoplastic resin film having a glass transition point of 180° C. or higher to have a surface roughness of 0.1 μm or less. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2137109A JP2807045B2 (en) | 1990-05-29 | 1990-05-29 | Method for producing heat-resistant optical film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2137109A JP2807045B2 (en) | 1990-05-29 | 1990-05-29 | Method for producing heat-resistant optical film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0431030A true JPH0431030A (en) | 1992-02-03 |
| JP2807045B2 JP2807045B2 (en) | 1998-09-30 |
Family
ID=15191053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2137109A Expired - Fee Related JP2807045B2 (en) | 1990-05-29 | 1990-05-29 | Method for producing heat-resistant optical film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2807045B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0693363A1 (en) * | 1993-04-09 | 1996-01-24 | Daikin Industries, Limited | Fluororesin molded product smoothing method and smoothed molded product |
| WO2000048820A1 (en) * | 1999-02-16 | 2000-08-24 | Sumitomo Bakelite Company Limited | Production method for thermoplastic polymer sheet and optical sheet |
| US6146923A (en) * | 1993-04-09 | 2000-11-14 | Tadahiro Ohmi | Method of smoothing fluorine-containing resin molded article and smoothed molded article |
| JP2001212878A (en) * | 2000-02-01 | 2001-08-07 | Sumitomo Bakelite Co Ltd | Method and apparatus for manufacturing polymer film sheet, and polymer film sheet using the same |
| JP2002059472A (en) * | 2000-08-22 | 2002-02-26 | Sumitomo Bakelite Co Ltd | Polymer sheet, manufacturing method therefor and liquid crystal display device |
-
1990
- 1990-05-29 JP JP2137109A patent/JP2807045B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0693363A1 (en) * | 1993-04-09 | 1996-01-24 | Daikin Industries, Limited | Fluororesin molded product smoothing method and smoothed molded product |
| EP0693363A4 (en) * | 1993-04-09 | 1997-03-05 | Daikin Ind Ltd | Fluororesin molded product smoothing method and smoothed molded product |
| US6146923A (en) * | 1993-04-09 | 2000-11-14 | Tadahiro Ohmi | Method of smoothing fluorine-containing resin molded article and smoothed molded article |
| WO2000048820A1 (en) * | 1999-02-16 | 2000-08-24 | Sumitomo Bakelite Company Limited | Production method for thermoplastic polymer sheet and optical sheet |
| JP2001212878A (en) * | 2000-02-01 | 2001-08-07 | Sumitomo Bakelite Co Ltd | Method and apparatus for manufacturing polymer film sheet, and polymer film sheet using the same |
| JP2002059472A (en) * | 2000-08-22 | 2002-02-26 | Sumitomo Bakelite Co Ltd | Polymer sheet, manufacturing method therefor and liquid crystal display device |
| JP4491121B2 (en) * | 2000-08-22 | 2010-06-30 | 住友ベークライト株式会社 | Polymer sheet, polymer sheet manufacturing method, and liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2807045B2 (en) | 1998-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |