JPH0679736A - Method for manufacturing polysulphone resin film - Google Patents
Method for manufacturing polysulphone resin filmInfo
- Publication number
- JPH0679736A JPH0679736A JP13847593A JP13847593A JPH0679736A JP H0679736 A JPH0679736 A JP H0679736A JP 13847593 A JP13847593 A JP 13847593A JP 13847593 A JP13847593 A JP 13847593A JP H0679736 A JPH0679736 A JP H0679736A
- Authority
- JP
- Japan
- Prior art keywords
- polysulfone
- solution
- film
- based resin
- producing
- 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
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Moulding By Coating Moulds (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ポリサルホン系樹脂フ
ィルムの製造方法に関し、さらに詳しくは、外観、平滑
性、厚み精度及び透明性に優れたキャストフィルムを生
産性良く製造する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a polysulfone resin film, and more particularly to a method for producing a cast film excellent in appearance, smoothness, thickness accuracy and transparency with high productivity.
【０００２】[0002]
【従来の技術】現在のところ、ポリサルホン系樹脂フィ
ルムの製造方法として、溶融キャスト成膜法と、溶液キ
ャスト成膜法の２つの手段がある。溶融キャスト成膜法
とは、例えば特開昭５２−１４７６６２号公報に記載さ
れているように熱により溶融しているポリサルホン系樹
脂を金型からフィルム状に押し出して支持体表面にキャ
スト（流延）して冷却し、フィルムを得る方法である。2. Description of the Related Art At present, there are two methods for producing a polysulfone resin film, a melt cast film forming method and a solution cast film forming method. The melt-cast film forming method is, for example, as described in JP-A-52-147662, a polysulfone-based resin melted by heat is extruded from a mold into a film and cast (cast) on the surface of a support. ) And cool to obtain a film.
【０００３】この溶融キャスト成膜法によって得られた
フィルムは、溶融残渣や異物等を核としたフィッシュア
イのためにフィルムの外観品質が十分でなく、また透明
性や平滑性に悪影響を及ぼす。さらに、厚み精度の面で
も金型の機械精度以上になることはなく、十分とは言え
ない。The film obtained by this melt cast film forming method has an insufficient appearance quality of the film due to fish eyes whose cores are molten residues and foreign substances, and adversely affects transparency and smoothness. Further, in terms of thickness accuracy, it does not exceed the mechanical accuracy of the mold, which is not sufficient.
【０００４】溶液キャスト成膜法とは、例えば特開平２
−１１１５１１号公報に記載されているように樹脂を溶
媒に溶解し、溶液状態でカンマコーター、リップコータ
ー、ドクターブレードコーター、バーコーター、ロール
コーター等を用いてステンレスベルト、ステンレスドラ
ム、プラスチックフィルム等の支持体の上にキャストし
た後に溶媒を蒸発させ支持体から剥離してフィルムを得
る方法である。The solution cast film forming method is described in, for example, Japanese Patent Laid-Open No.
As described in JP-A-111511, a resin is dissolved in a solvent, and a solution such as a comma coater, a lip coater, a doctor blade coater, a bar coater, and a roll coater is used to form a stainless belt, a stainless drum, a plastic film, or the like. It is a method of obtaining a film by casting on a support and then evaporating the solvent to separate it from the support.
【０００５】この溶液キャスト成膜法によってフィルム
を製造する場合には、キャストする溶液の固形分は１０
０％ではないため、キャストした溶液は乾燥させると溶
媒が蒸発して厚みが薄くなる。したがって、前述の各種
コーターの持つ機械精度からくる厚みのバラツキに固形
分比率を乗じたものが乾燥後のフィルムの厚みのバラツ
キとなり、厚み精度が向上する。このため、前者の溶融
キャスト成膜法よりも厚み精度の高いフィルムを製造す
ることが可能である。また、溶融状態よりも低い粘度で
のキャストが可能なため、より保留粒径の小さいフィル
ターによって異物を除去する事が可能であり、外観や平
滑性の面でも溶融キャスト成膜法よりも有利である。When a film is produced by this solution cast film forming method, the solid content of the solution to be cast is 10
Since it is not 0%, when the cast solution is dried, the solvent evaporates and the thickness becomes thin. Therefore, a product obtained by multiplying the variation in thickness due to the mechanical precision of the various coaters described above by the solid content ratio becomes the variation in the thickness of the film after drying, and the thickness precision is improved. Therefore, it is possible to manufacture a film having higher thickness accuracy than the former melt cast film forming method. In addition, since it is possible to cast with a viscosity lower than that in the molten state, it is possible to remove foreign substances with a filter having a smaller retained particle size, which is more advantageous in terms of appearance and smoothness than the melt cast film formation method. is there.
【０００６】[0006]
【発明が解決しようとする課題】かかる利点を有する溶
液キャスト成膜法によりポリサルホン系樹脂フィルムを
製造する場合においても、ポリサルホン系樹脂を良溶媒
である塩化メチレン、1,2-ジクロロエタン、クロロベン
ゼン等に溶解すると、ポリサルホン系樹脂溶液が撥水性
となる。このため、キャストする際の支持体である前述
のステンレスベルト、ステンレスドラム、プラスチック
フィルムの表面材質であるステンレス、クロム、ポリエ
ステル、ガラス、フッ素樹脂等に対するポリサルホン系
樹脂溶液の濡れが低くなる。したがって、実際の成膜に
おいては、図１のように支持体１の上に溶液３をキャス
トする際にエアー２を巻き込み易く、この巻き込まれた
エアーが溶媒を蒸発させる工程で発泡核４となりキャス
トフィルムの外観、平滑性、厚み精度を損なう。また、
これら良溶媒はいずれも低沸点溶媒であり、前述の支持
体上にキャストした後の乾燥過程において発泡を生じや
すく、外観、平滑性、厚み精度を損ないやすく、発泡を
生じさせないためには乾燥速度を低下させることが必要
となり、生産性が著しく低下する。Even when a polysulfone-based resin film is produced by a solution cast film forming method having such an advantage, the polysulfone-based resin is changed to a good solvent such as methylene chloride, 1,2-dichloroethane or chlorobenzene. When dissolved, the polysulfone-based resin solution becomes water repellent. For this reason, the wettability of the polysulfone-based resin solution with respect to the stainless steel belt, the stainless steel drum, which is the support when casting, and the stainless steel, chromium, polyester, glass, fluororesin and the like which are the surface materials of the plastic film is low. Therefore, in the actual film formation, as shown in FIG. 1, when the solution 3 is cast on the support 1, it is easy to entrain the air 2, and the entrained air becomes the foaming nuclei 4 in the step of evaporating the solvent and casting. Impairs the appearance, smoothness, and thickness accuracy of the film. Also,
All of these good solvents are low boiling point solvents, and foaming is likely to occur in the drying process after casting on the above-mentioned support, and appearance, smoothness, and thickness accuracy are likely to be impaired. It becomes necessary to reduce the above, and the productivity is remarkably reduced.
【０００７】また、この現象は、溶液中にポリサルホン
系樹脂と良溶媒の他に、目的に応じてアセトン等の貧溶
媒または可塑剤を添加した場合等でも同様に生じ、外観
不良等の問題を発生させるため、発泡核を生じない塗工
方法もしくは条件の検討を必要とする。This phenomenon also occurs when a poor solvent such as acetone or a plasticizer is added to the solution in addition to the polysulfone resin and the good solvent, depending on the purpose. In order to generate it, it is necessary to examine the coating method or conditions that do not generate foam nuclei.
【０００８】本発明の目的は、溶液キャスト成膜法にて
製造する際のポリサルホン系樹脂溶液の支持体表面との
濡れの改善を図り、溶液キャスト成膜法による外観、平
滑性、厚み精度に優れたポリサルホン系樹脂フィルムを
製造する方法を提供することにある。The object of the present invention is to improve the wettability of the polysulfone-based resin solution with the surface of the support during the production by the solution cast film forming method, and to improve the appearance, smoothness and thickness accuracy by the solution cast film forming method. It is to provide a method for producing an excellent polysulfone-based resin film.
【０００９】[0009]
【課題を解決するための手段】本発明者は、前記課題に
関し鋭意検討した結果、ポリサルホン系樹脂フィルムを
溶液キャスト成膜法にて製造する際に、ポリサルホン系
樹脂溶液中の含水率が支持体との濡れに寄与しているこ
とを見い出し本発明に至った。Means for Solving the Problems As a result of extensive studies on the above problems, the present inventor has found that when a polysulfone-based resin film is produced by a solution cast film-forming method, the water content in the polysulfone-based resin solution is a support. The inventors of the present invention have found that they contribute to the wetting with the present invention.
【００１０】すなわち、本発明の要旨は、ポリサルホン
系樹脂フィルムを溶液キャスト成膜法にて製造する際
に、ポリサルホン系樹脂溶液中の含水率が、０．２重量
％以下となるように調製した溶液を流延・乾燥すること
によりフィルムを得ることを特徴とするポリサルホン系
樹脂フィルムの製造方法にある。That is, the gist of the present invention is that when a polysulfone-based resin film is produced by a solution cast film forming method, the water content in the polysulfone-based resin solution is adjusted to 0.2% by weight or less. A method for producing a polysulfone-based resin film, characterized in that the film is obtained by casting and drying the solution.
【００１１】本発明に用いられるポリサルホン系樹脂と
しては、4,4'−ジクロロジフェニルサルホンとビスフェ
ニールＡのナトリウム塩の共縮重合体であるポリサルホ
ンに代表される、繰り返し単位中にサルホン基を有する
芳香族ポリサルホン系重合体等である。The polysulfone resin used in the present invention has a sulfone group in a repeating unit, which is represented by polysulfone which is a co-condensation polymer of 4,4'-dichlorodiphenylsulfone and a sodium salt of bisphenyl A. The aromatic polysulfone-based polymer and the like.
【００１２】溶液キャスト成膜法に供せられるポリサル
ホン系樹脂溶液中のポリサルホン系樹脂の固形分濃度と
しては、溶液粘度として２０００から１０００００ｃｐ
ｓとなる濃度、すなわちスチレン換算での重量平均分子
量が７×１０4 のポリサルホン樹脂の場合で、２０から
４０重量％が望ましい。The solid content concentration of the polysulfone-based resin in the polysulfone-based resin solution used in the solution cast film forming method is a solution viscosity of 2000 to 100000 cp.
In the case of a polysulfone resin having a concentration of s, that is, a weight average molecular weight in terms of styrene of 7 × 10 4 , it is preferably 20 to 40% by weight.
【００１３】ポリサルホン系樹脂溶液の含水率として
は、０．２重量％以下が好ましい。さらに好適には、
０．０３重量％以上０．２重量％以下が好ましい。０．
２重量％を越えると、ポリサルホン系樹脂の溶液安定性
に問題が生じ、溶液が白濁してしまい、流延・乾燥後も
白濁したフィルムとなり透明性を損ってしまい、さらに
発泡核を生じ、フィルムの平滑性、厚み精度に問題を生
じる。０．０３重量％以下の場合には製作条件によって
は実用上問題にならない程度の僅かな発泡が生じる場合
がある。The water content of the polysulfone resin solution is preferably 0.2% by weight or less. More preferably,
It is preferably 0.03% by weight or more and 0.2% by weight or less. 0.
If it exceeds 2% by weight, a problem occurs in the solution stability of the polysulfone-based resin, the solution becomes cloudy, the film becomes cloudy even after casting and drying, and the transparency is impaired. This causes problems with the smoothness and thickness accuracy of the film. When the content is 0.03% by weight or less, a slight amount of foaming may occur depending on the manufacturing conditions, which is not a problem in practical use.
【００１４】ポリサルホン系樹脂溶液中の溶媒とは、塩
化メチレン、1,2-ジクロロエタン、クロロベンゼン等の
良溶媒の単独、またはこの良溶媒に目的に応じて貧溶
媒、可塑剤等が混合されてなるものである。The solvent in the polysulfone resin solution is a good solvent such as methylene chloride, 1,2-dichloroethane or chlorobenzene, or a mixture of this good solvent with a poor solvent, a plasticizer or the like depending on the purpose. It is a thing.
【００１５】本発明で述べるポリサルホン系樹脂溶液の
含水率とは良溶媒、貧溶媒、可塑剤等の総量に対する含
水率をいう。The water content of the polysulfone resin solution described in the present invention means the water content with respect to the total amount of good solvent, poor solvent, plasticizer and the like.
【００１６】ここで述べる貧溶媒とは、ポリサルホン系
樹脂との相溶性が悪く、塩化メチレンとの相溶性の良い
もので、かつ着色の生じないものが好ましい。例えば、
アセトン、テトラヒドロフラン、メチルエチルケトン、
ヘキサン等の貧溶媒が使用可能であり、２種類以上の貧
溶媒を混合して用いてもかまわない。The poor solvent described here is preferably one which has poor compatibility with the polysulfone resin and good compatibility with methylene chloride and does not cause coloring. For example,
Acetone, tetrahydrofuran, methyl ethyl ketone,
A poor solvent such as hexane can be used, and two or more kinds of poor solvents may be mixed and used.
【００１７】また可塑剤としては、ポリサルホン系樹脂
との相溶性が良く、相分離やブリードアウトを生じない
もので、かつ、着色の生じないものが好ましい。例え
ば、フタル酸系、りん酸系、アジピン酸系、クエン酸
系、グリコール酸系などの可塑剤が使用可能で、フタル
酸ジシクロヘキシル、フタル酸ブチルベンジル、りん酸
トリクレジル、メチルフタリル・エチルグリコレートな
どが好適であり、２種類以上の可塑剤を混合して用いて
もかまわない。The plasticizer is preferably one which has good compatibility with the polysulfone resin, does not cause phase separation or bleed-out, and does not cause coloring. For example, phthalic acid-based, phosphoric acid-based, adipic acid-based, citric acid-based, glycolic acid-based plasticizers can be used, and dicyclohexyl phthalate, butylbenzyl phthalate, tricresyl phosphate, methylphthalyl / ethyl glycolate, etc. can be used. It is preferable, and two or more kinds of plasticizers may be mixed and used.
【００１８】ポリサルホン系樹脂溶液をキャストする際
の支持体としては、ステンレスベルト、ステンレスドラ
ム等の金属、ポリエチレンテレフタレートフィルム等の
合成樹脂フィルム等が使用でき、これらの表面をガラス
等の焼結体やフッ素樹脂等で被覆したり、シリコンやフ
ッ素樹脂等で離型処理してもよい。As a support for casting the polysulfone-based resin solution, a metal such as a stainless belt or a stainless drum, a synthetic resin film such as a polyethylene terephthalate film, or the like can be used, and the surface thereof is a sintered body such as glass or the like. It may be covered with a fluororesin or the like, or may be subjected to a mold release treatment with silicon or a fluororesin.
【００１９】含水率を調整したポリサルホン系樹脂溶液
を、カンマコーター、リップコーター、ドクターブレー
ドコーター、ロールコーター等を用いて支持体の上にキ
ャストし乾燥した後に支持体より剥離することにより、
厚み精度が良く、平滑性・透明性も高く、外観不良の無
いポリサルホン系樹脂フィルムが得られる。By using a comma coater, a lip coater, a doctor blade coater, a roll coater, etc., the polysulfone-based resin solution having the adjusted water content is cast on the support, dried, and then peeled from the support.
It is possible to obtain a polysulfone-based resin film that has good thickness accuracy, high smoothness and transparency, and has no defective appearance.
【００２０】[0020]
【作用】溶液キャスト成膜法によってポリサルホン系樹
脂フィルムを製造する場合の溶液中の含水率を調整する
ことにより、溶液をキャストする際の支持体に対する濡
れ性が向上し、気泡の巻き込みがなくなり、発泡核がな
く、白濁もしていない、つまりは外観、平滑性、厚み精
度に優れたキャストフィルムを生産することが可能とな
る。[Function] By adjusting the water content in the solution in the case of producing a polysulfone-based resin film by the solution cast film forming method, the wettability to the support at the time of casting the solution is improved, and the inclusion of bubbles is eliminated, It is possible to produce a cast film that has no foam nuclei and is not clouded, that is, has excellent appearance, smoothness, and thickness accuracy.
【００２１】[0021]
【実施例】以下、実施例によりさらに詳しく説明する
が、本発明のポリサルホン系樹脂フィルムの製造方法は
以下の実施例に限定されるものではない。EXAMPLES The present invention will be described in more detail below with reference to Examples, but the method for producing the polysulfone-based resin film of the present invention is not limited to the following Examples.
【００２２】実施例１ １４０℃で７時間乾燥し含水率を０．００１重量％とし
たスチレン換算での重量平均分子量が７×１０4 のポリ
サルホン樹脂を、モレキュラーシーブにより含水率を
０．０１重量％まで減少させた塩化メチレンに溶解しさ
らに水を加えて固形分２５重量％、含水率０．２重量％
になるように溶液を調製した。この溶液をロールコータ
ーによりポリエチレンテレフタレートフィルムの上に乾
燥後の厚みが１００μｍとなるようにキャストし、乾燥
してフィルムを製作した。乾燥後の発泡による欠陥の個
数及び白濁の有無を評価した結果を表１に示す。Example 1 Polysulfone resin having a weight average molecular weight of 7 × 10 4 in terms of styrene, which was dried at 140 ° C. for 7 hours and had a water content of 0.001% by weight, had a water content of 0.01% by a molecular sieve. Dissolved in methylene chloride reduced to 20% and further added water to obtain a solid content of 25% by weight, water content of 0.2% by weight
A solution was prepared so that This solution was cast on a polyethylene terephthalate film by a roll coater so that the thickness after drying would be 100 μm, and dried to produce a film. Table 1 shows the results of evaluation of the number of defects due to foaming after drying and the presence or absence of white turbidity.
【００２３】実施例２ 実施例１と同じポリサルホン樹脂と塩化メチレンで、固
形分３０重量％、含水率０．１重量％になるように溶液
を調製し、得られた溶液を実施例１と同様にフィルムを
作成し、評価を行った。その結果を表１に示す。Example 2 A solution was prepared with the same polysulfone resin and methylene chloride as in Example 1 so that the solid content was 30% by weight and the water content was 0.1% by weight, and the obtained solution was the same as in Example 1. A film was prepared on and evaluated. The results are shown in Table 1.
【００２４】実施例３ 実施例１と同じ塩化メチレンとモレキュラーシーブによ
り含水率を０．０３重量％まで減少させたアセトンと
で、塩化メチレン：アセトン＝９７：３（重量比）の混
合溶媒を作成し、該混合溶媒に実施例１と同じポリサル
ホン樹脂を溶解しさらに水を加えて固形分３０重量％、
含水率０．０３重量％になるように溶液を調製し、得ら
れた溶液を用いて実施例１と同様にフィルムを製作し、
評価を行った。その結果を表１に示す。Example 3 A mixed solvent of methylene chloride: acetone = 97: 3 (weight ratio) was prepared from the same methylene chloride as in Example 1 and acetone whose water content was reduced to 0.03% by weight with a molecular sieve. Then, the same polysulfone resin as in Example 1 was dissolved in the mixed solvent, and water was further added to obtain a solid content of 30% by weight.
A solution was prepared to have a water content of 0.03% by weight, and a film was produced in the same manner as in Example 1 using the obtained solution.
An evaluation was made. The results are shown in Table 1.
【００２５】実施例４ 実施例１と同じポリサルホン樹脂と塩化メチレンで、固
形分３０重量％、含水率０．０２重量％になるように溶
液を調整し、得られた溶液を実施例１と同様にフィルム
を作成し、評価を行った。その結果を表１に示す。Example 4 The same polysulfone resin as in Example 1 and methylene chloride were used to prepare a solution having a solid content of 30% by weight and a water content of 0.02% by weight. A film was prepared on and evaluated. The results are shown in Table 1.
【００２６】実施例５ 実施例１と同じポリサルホン樹脂溶液をリップコーター
によりガラスコーティングしたステンレス板の上に乾燥
後の厚みが１００μｍとなるようにキャスト、乾燥後に
得られたフィルムを実施例１と同様の評価を行った。そ
の結果を表１に示す。Example 5 The same polysulfone resin solution as in Example 1 was cast on a stainless steel plate coated with glass by a lip coater so that the thickness after drying was 100 μm, and the film obtained after drying was the same as in Example 1. Was evaluated. The results are shown in Table 1.
【００２７】比較例１ 実施例１と同じポリサルホン樹脂と塩化メチレンで、固
形分３０重量％、含水率０．２５重量％になるように溶
液を調整し、得られた溶液を実施例１と同様にフィルム
を作成し、評価を行った。その結果を表１に示す。Comparative Example 1 The same polysulfone resin as in Example 1 and methylene chloride were used to prepare a solution having a solid content of 30% by weight and a water content of 0.25% by weight. A film was prepared on and evaluated. The results are shown in Table 1.
【００２８】[0028]
【表１】 [Table 1]
【００２９】表１から、実施例のフィルムは発泡による
欠陥が殆どなく、また白濁もしていないことがわかる。
一方、比較例のフィルムは、発泡による欠陥が多数個あ
り、さらにフィルムが白濁して透明でない。From Table 1, it can be seen that the films of Examples had almost no defects due to foaming and no clouding.
On the other hand, the film of the comparative example has many defects due to foaming, and the film is opaque and not transparent.
【００３０】[0030]
【発明の効果】本発明により、溶液キャスト成膜法によ
るポリサルホン系樹脂フィルムの製造時に、ポリサルホ
ン系樹脂溶液中の含水率を調整することにより、支持体
との濡れ性が向上し発泡核の発生を防止することがで
き、白濁も防止できて、外観、平滑性、厚み精度に優れ
たキャストフィルムが得られる。EFFECTS OF THE INVENTION According to the present invention, when a polysulfone-based resin film is produced by a solution cast film forming method, the wettability with a support is improved by adjusting the water content in the polysulfone-based resin solution, and foam nuclei are generated. And a white turbidity can be prevented, and a cast film excellent in appearance, smoothness, and thickness accuracy can be obtained.
【図１】図１はコンマロールを用いたロールコーティン
グによる溶液キャスト工程の模式図である。 １ 支持体 ２ 巻き込みエアー ３ ポリサルホン樹脂溶液 ４ 発泡核 ５ コンマロールFIG. 1 is a schematic diagram of a solution casting process by roll coating using comma rolls. 1 Support 2 Entrained Air 3 Polysulfone Resin Solution 4 Foaming Core 5 Comma Roll
Claims (9)
スト成膜法にて製造する際に、ポリサルホン系樹脂溶液
中の含水率が、０．２重量％以下となるように調製した
溶液を流延・乾燥することによりフィルムを得ることを
特徴とするポリサルホン系樹脂フィルムの製造方法。1. When a polysulfone-based resin film is produced by a solution cast film forming method, a solution prepared so that the water content in the polysulfone-based resin solution is 0.2% by weight or less is cast and dried. A method for producing a polysulfone-based resin film, which comprises obtaining a film by
チレンであることを特徴とする請求項１に記載のポリサ
ルホンフィルムの製造方法。2. The method for producing a polysulfone film according to claim 1, wherein the solvent of the polysulfone-based resin solution is methylene chloride.
媒が混合されてなることを特徴とする請求項１に記載の
ポリサルホン系樹脂フィルムの製造方法。3. The method for producing a polysulfone resin film according to claim 1, wherein a poor solvent is mixed in the solvent of the polysulfone resin solution.
剤が混合されてなることを特徴とする請求項１に記載の
ポリサルホン系樹脂フィルムの製造方法。4. The method for producing a polysulfone resin film according to claim 1, wherein a plasticizer is mixed in a solvent of the polysulfone resin solution.
れる貧溶媒がアセトンであることを特徴とする請求項３
に記載のポリサルホン系樹脂フィルムの製造方法。5. The poor solvent contained in the solvent of the polysulfone-based resin solution is acetone.
The method for producing a polysulfone-based resin film according to 1.
れるアセトンが全溶媒中の１から３０重量％であること
を特徴とする請求項５に記載のポリサルホン系樹脂フィ
ルムの製造方法。6. The method for producing a polysulfone-based resin film according to claim 5, wherein the amount of acetone contained in the solvent of the polysulfone-based resin solution is 1 to 30% by weight based on the total amount of the solvent.
する際に、金属または合成樹脂フィルムからなる支持体
上にポリサルホン系樹脂溶液をキャストすることを特徴
とする請求項１に記載のポリサルホン系樹脂フィルムの
製造方法。7. The polysulfone-based resin solution according to claim 1, wherein the polysulfone-based resin solution is cast on a support made of a metal or a synthetic resin film when the film is produced by the solution cast film forming method. Method for producing resin film.
する際の支持体の表面に焼結体の被覆を施したことを特
徴とする請求項７に記載のポリサルホン系樹脂フィルム
の製造方法。8. The method for producing a polysulfone-based resin film according to claim 7, wherein the surface of the support used for producing the film by the solution cast film formation method is coated with a sintered body.
する際の支持体の表面に離型処理を施したことを特徴と
する請求項７に記載のポリサルホン系樹脂フィルムの製
造方法。9. The method for producing a polysulfone-based resin film according to claim 7, wherein the surface of the support when the film is produced by the solution cast film forming method is subjected to a mold release treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13847593A JP3011573B2 (en) | 1992-07-15 | 1993-06-10 | Method for producing polysulfone-based resin film |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18791892 | 1992-07-15 | ||
| JP4-187918 | 1992-07-15 | ||
| JP13847593A JP3011573B2 (en) | 1992-07-15 | 1993-06-10 | Method for producing polysulfone-based resin film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0679736A true JPH0679736A (en) | 1994-03-22 |
| JP3011573B2 JP3011573B2 (en) | 2000-02-21 |
Family
ID=26471485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13847593A Expired - Fee Related JP3011573B2 (en) | 1992-07-15 | 1993-06-10 | Method for producing polysulfone-based resin film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3011573B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5645766A (en) * | 1995-03-30 | 1997-07-08 | Teijin Limited | Film of aromatic polyethersulfone process for the production thereof and solution composition for the production thereof |
-
1993
- 1993-06-10 JP JP13847593A patent/JP3011573B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5645766A (en) * | 1995-03-30 | 1997-07-08 | Teijin Limited | Film of aromatic polyethersulfone process for the production thereof and solution composition for the production thereof |
| US5759449A (en) * | 1995-03-30 | 1998-06-02 | Teijin Limited | Film of aromatic polyethersulfone, process for the production thereof, and solution composition for the production thereof |
| US5958305A (en) * | 1995-03-30 | 1999-09-28 | Teijin Limited | Film of aromatic polyethersulfone, process for the production thereof, and solution composition for the production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3011573B2 (en) | 2000-02-21 |
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