JP2005048103A - ドープの調製方法,溶液製膜方法及びフィルム製品 - Google Patents
ドープの調製方法,溶液製膜方法及びフィルム製品 Download PDFInfo
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- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7466—Combinations of similar mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/82—Heating or cooling
- B29B7/826—Apparatus therefor
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
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- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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Abstract
【解決手段】 ジクロロメタン系混合溶媒とTACと可塑剤とを溶解タンク12に入れる。攪拌翼21で攪拌して粗溶解液22を得る。粗溶解液22を貯蔵タンク23に移送してさらに攪拌された粗溶解液26とする。ポンプ27で加熱用熱交換器31に送液した後にスタティックミキサー32で混合攪拌する。測温計33で多点のドープ温度を測定する。多点のドープ温度の温度分布に基づき加熱用熱交換器31の伝熱条件を調整する。ドープを冷却用熱交換器35に送液する。ドープの沸点以下まで冷却した後にスタティックミキサー36で混合攪拌する。ドープ調製を行う際に温度分布の発生を抑制しているので均一なドープ53を得る。
【選択図】 図1
Description
発明協会公開技報公技番号2001−1745号(第22−30頁)
3.0MPa>P(MPa)≧[P0+(T−40)×0.002](MPa)の範囲に調整することが好ましい。
3.0(MPa)>P(MPa)≧
[P0+(T−40)×0.002]MPa・・(1)
ここで、P0(MPa)は、ドープ温度が沸点以上で到達する最高温度T(℃)より算出される蒸気圧(MPa)の理論値である。なお、圧力P(MPa)を3.0MPa以上としても良いが、ポンプ27の送液負荷が高まるためにコストの点から不利である。なお、圧力Pの最大値は、2.5MPa以下がより好ましく、最も好ましくは2.0MPa以下とすることである。圧力Pの最大値を下げることにより、耐圧性が低い設備を用いることが可能となり、設備コストを低減することができる。また、下限値の(T−40)×0.002は、ヒータの熱源(例えば、スチームなど)の変動が生じた場合にも、ドープの発泡を生じさせないために必要な加圧量であることを本発明者は、見出した。
3.0(MPa)>P(MPa)≧
[P0+(T−40)×0.002]MPa・・(1)
なお、P0(MPa)は、前述したようにドープ最高温度T(℃)において算出される蒸気圧(MPa)の理論値である。
このようにドープの圧力P(MPa)を最高温度の蒸気圧P0(MPa)より大きくすることで、ドープの発泡を抑制する。
セルローストリアセテート(置換度2.82、粘度平均重合度320、含水率0.4質量%、ジクロロメタン溶液中6質量%の粘度 305mPa・s、平均粒子径1.5mmであって標準偏差0.5mmである粉体)
14.5重量部
酢酸メチル 67.69重量部
アセトン 6.69重量部
エタノール 5.85重量部
n−ブタノール 3.34重量部
可塑剤A(ジトリメチロールプロパンテトラアセテート) 0.29重量部
可塑剤B(トリフェニルフォスフェート) 0.91重量部
可塑剤C(ビフェニルジフェニルフォスフェート) 0.54重量部
可塑剤D(エチルフタリルグリコールエチルエステル) 0.091重量部
UV剤a (2,4−ビス−(n−オクチルチオ)−6−(4−ヒドロキシ−3,5−ジ−tert−ブチルアニリノ)−1,3,5−トリアジン)
0.05重量部
UV剤b 2(2’−ヒドロキシ−3’,5’−ジ−tert−ブチルフェニル)−5−クロルベンゾトリアゾール 0.05重量部
UV剤c (2(2’−ヒドロキシ−3’,5’−ジ−tert−アミルフェニル)−5−クロルベンゾトリアゾール 0.1重量部
クエン酸エチルエステル(剥離剤) 0.03重量部
微粒子(二酸化ケイ素(粒径20nm)、モース硬度 約7)
0.05重量部
30,38 圧力計
31,35 熱交換器
32,36 スタティックミキサー
33,37 測温計
39 圧力調整バルブ
53 ドープ
156 フィルム
Claims (26)
- ポリマーを溶媒に溶解させてドープを調製する方法において、
前記ポリマーと前記溶媒とを加熱機を用いて加熱して前記ドープを調製する加熱工程と、
前記加熱工程の後に混合装置を用いて前記ドープを混合攪拌する第1混合工程と、
を含むことを特徴とするドープの調製方法。 - 前記第1混合工程の後に、
前記ドープを前記溶媒の沸点以下に冷却機を用いて冷却を行う冷却工程と、
前記冷却工程の後に混合装置を用いて前記ドープを混合攪拌する第2混合工程と、
を含むことを特徴とする請求項1記載のドープの調製方法。 - 前記加熱工程を行う際に、加熱機とその下流側に混合装置とを備えた加熱ユニットを複数用い、
前記ドープを前記各加熱機で20℃〜70℃の範囲で段階的に昇温させることを特徴とする請求項1または2記載のドープの調製方法。 - 前記冷却工程を行う際に、冷却機とその下流側に混合装置とを備えた冷却ユニットを複数用い、
前記ドープを前記各冷却機で20℃〜70℃の範囲で段階的に降温させることを特徴とする請求項2または3記載のドープの調製方法。 - 前記混合装置の下流側にインラインで温度測定手段を設け、前記ドープの温度を測定する温度測定工程と、
前記温度測定結果に基づき前記加熱機または前記冷却機の少なくともいずれかの温度調整条件を制御する温度制御工程と、
を含むことを特徴とする請求項1ないし4いずれか1つ記載のドープの調製方法。 - 前記温度測定手段に多点式測温抵抗管を用いることを特徴とする請求項5記載のドープの調製方法。
- 前記ドープの温度が前記溶媒の沸点以下となる箇所に圧力調整手段を設け、
前記圧力調整手段を用いて前記ドープの圧力を上昇させることを特徴とする請求項1ないし6いずれか1つ記載のドープの調製方法。 - 前記温度測定工程で、前記ドープの最高温度T(℃)が60℃以上150℃以下であって、
前記最高温度T(℃)から算出される蒸気圧の理論値をP0(MPa)としたときに、
前記ドープの圧力P(MPa)を
3.0MPa>P(MPa)≧[P0+(T−40)×0.002](MPa)の範囲に調整することを特徴とする請求項5ないし7いずれか1つ記載のドープの調製方法。 - 前記加熱機に熱交換器を用いることを特徴とする請求項1ないし8いずれか1つ記載のドープの調製方法。
- 前記冷却機に熱交換器を用いることを特徴とする請求項2ないし9いずれか1つ記載のドープの調製方法。
- 前記熱交換器にスパイラル熱交換器を用いることを特徴とする請求項9または10記載のドープの調製方法。
- 前記混合装置にスタティックミキサーを用いることを特徴とする請求項1ないし11いずれか1つに記載のドープの調製方法。
- 前記ドープの流量を30L/min以上200L/min以下とした場合であって、
径が50mm以上300mm以下、
羽根の枚数が6枚以上60枚以下のスタチックミキサーを用いることを特徴とする請求項12記載のドープの調製方法。 - 前記加熱工程を行う際に、前記ポリマー濃度を0.1重量%以上25.0重量%以下であるドープを調製することを特徴とする請求項1ないし13いずれか1つ記載のドープの調製方法。
- 前記ポリマーにセルロースエステルを用いることを特徴とする請求項1ないし14いずれか1つ記載のドープの調製方法。
- 前記セルロースエステルに57.5%以上62.5%以下の平均酢化度を有するセルロースアセテートを用いることを特徴とする請求項15記載のドープの調製方法。
- 前記ポリマーに対して0.1重量%以上20.0重量%以下の可塑剤を前記ドープに溶解させることを特徴とする請求項1ないし16いずれか1つ記載のドープの調製方法。
- 前記溶媒に混合溶媒を用いる場合であって、前記混合溶媒の主溶媒にハロゲン化炭化水素を用いることを特徴とする請求項1ないし17いずれか1つ記載のドープの調製方法。
- ポリマーを溶媒に溶解させてドープを調製する方法において、
前記ポリマーと前記溶媒とを冷却機を用いて冷却して前記ドープを調製する冷却調製工程と、
前記冷却調製工程の後に混合装置を用いて前記ドープを混合攪拌する第3混合工程と、
を含むことを特徴とするドープの調製方法。 - 請求項1ないし19いずれか1つ記載のドープの調製方法により調製されたドープを流延して、フィルムを製膜することを特徴とする溶液製膜方法。
- 請求項1ないし19いずれか1つ記載のドープの調製方法により2以上のドープを調製し、
前記2以上のドープを共流延して、フィルムを製膜することを特徴とする溶液製膜方法。 - 請求項1ないし19いずれか1つ記載のドープの調製方法により2以上のドープを調製し、
前記2以上のドープを逐次流延して、フィルムを製膜することを特徴とする溶液製膜方法。 - 前記流延した後に、前記フィルムの少なくとも1軸以上を延伸することを特徴とする請求項20ないし22いずれか1つ記載の溶液製膜方法。
- 偏光板保護膜として用いるフィルムを製膜することを特徴とする請求項20ないし23いずれか1つ記載の溶液製膜方法。
- 偏光板として用いるフィルムを製膜することを特徴とする請求項20ないし23いずれか1つ記載の溶液製膜方法。
- 光学機能性膜として用いるフィルムを製膜することを特徴とする請求項20ないし23いずれか1つ記載の溶液製膜方法。
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| TW093122344A TWI324084B (en) | 2003-07-30 | 2004-07-27 | Method and apparatus for producing dope |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006242473A (ja) * | 2005-03-03 | 2006-09-14 | Takasago Thermal Eng Co Ltd | 精密温調用空調機 |
| JP2009090655A (ja) * | 2007-09-20 | 2009-04-30 | Fujifilm Corp | ドープ混合装置、溶液製膜設備、ドープ混合方法及び溶液製膜方法 |
| JP2010100701A (ja) * | 2008-10-22 | 2010-05-06 | Toray Ind Inc | 樹脂スラリーの処理方法 |
| JP2014077059A (ja) * | 2012-10-10 | 2014-05-01 | Mitsubishi Chemicals Corp | ポリカーボネート樹脂の製造方法及びポリカーボネート樹脂の製造装置 |
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| US20060214333A1 (en) * | 2005-03-25 | 2006-09-28 | Fuji Photo Film Co., Ltd. | Polymer film and production method thereof |
| JP5518315B2 (ja) * | 2007-09-20 | 2014-06-11 | 富士フイルム株式会社 | ドープ混合装置、溶液製膜設備及び溶液製膜方法 |
| EP2439040B1 (en) | 2009-06-04 | 2019-01-23 | Berndorf Band GmbH | Wide casting belt, method for manufacturing a wide film, and wide film |
| CN103170280B (zh) * | 2013-04-03 | 2015-07-08 | 江阴华美数码科技有限公司 | 一种涂布剂配料结构 |
| US11384224B1 (en) * | 2018-10-05 | 2022-07-12 | Celanese International Corporation | Cellulose acetate film with optical properties |
| IT201800011011A1 (it) * | 2018-12-12 | 2020-06-12 | Pegaso Ind S P A | Dispositivo dosatore di additivi liquidi per la lavorazione di materie plastiche |
| CN111603965B (zh) * | 2020-06-18 | 2022-11-01 | 安徽蓝燕新材料科技有限公司 | 一种自动防凝固的涂料搅拌机 |
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| JP4352592B2 (ja) * | 2000-07-11 | 2009-10-28 | コニカミノルタホールディングス株式会社 | セルロースエステルドープ組成物、セルロースエステルフィルムの製造方法、セルロースエステルフィルム及びそれを用いた偏光板 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006242473A (ja) * | 2005-03-03 | 2006-09-14 | Takasago Thermal Eng Co Ltd | 精密温調用空調機 |
| JP2009090655A (ja) * | 2007-09-20 | 2009-04-30 | Fujifilm Corp | ドープ混合装置、溶液製膜設備、ドープ混合方法及び溶液製膜方法 |
| JP2010100701A (ja) * | 2008-10-22 | 2010-05-06 | Toray Ind Inc | 樹脂スラリーの処理方法 |
| JP2014077059A (ja) * | 2012-10-10 | 2014-05-01 | Mitsubishi Chemicals Corp | ポリカーボネート樹脂の製造方法及びポリカーボネート樹脂の製造装置 |
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