JP6773023B2 - 微多孔プラスチックフィルムの製造方法 - Google Patents
微多孔プラスチックフィルムの製造方法 Download PDFInfo
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- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
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- 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
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
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- 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
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- 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
- B29C55/18—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets by squeezing between surfaces, e.g. rollers
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- 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
- B29C55/20—Edge clamps
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- 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
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
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- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
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- H—ELECTRICITY
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
- H01M50/406—Moulding; Embossing; Cutting
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- H—ELECTRICITY
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- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
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- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
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Description
図1は、本発明の一実施形態である微多孔プラスチックフィルムの製造工程の概略側面図である。
ゲル状シート12の厚みは、吐出量に応じた口金スリット部からの流速に対し、冷却ドラムの速度を調整することで調整するのが好ましい。
好ましくは、延伸ローラー群42〜横延伸工程5に張力計を設置して実測することで、より高い精度で速度比を調整し、張力の釣りあいをとることができる。
[実施例1]
[実施例3(参考例)]
[実施例4]
[比較例1]
[比較例2]
[延伸ローラー上での滑り]
×(不可):ローラーとシートの速度差が、ローラー回転速度に対して10%以上
△(可):ローラーとシートの速度差が、ローラー回転速度に対して5%以上10%未満
○(良好):ローラーとシートの速度差が、ローラー回転速度に対して5%未満。
[縦延伸工程の蛇行量]
縦延伸工程4における蛇行量を以下の基準で評価した。
×(不可):蛇行量が10mm以上。
△(可):蛇行量が5mm以上10mm未満。
○(良好):蛇行量が5mm未満。
[微多孔プラスチックフィルム物性および機械的性質]
ガーレ透気抵抗度は、王研式透気抵抗度計(旭精工株式会社製、EGO−1T)を使用して、JIS P8117に準拠して測定した。
○(良好):ガーレ透気抵抗度が250sec±20sec及び突刺強度6N以上
×(不可):上記範囲外
12 ゲル状シート(フィルム)
13 一軸延伸シート(フィルム)
14 二軸延伸シート(フィルム)
15 微多孔プラスチックフィルムロール
21 押出機
22 ギアポンプ
23 口金
31 第1冷却ドラム
32 第2冷却ドラム
4 縦延伸工程
41 昇温ローラー群
42 延伸ローラー群
421 第1延伸ローラー
422 第2延伸ローラー(延伸ローラーA)
423 第3延伸ローラー(延伸ローラーB)
43 冷却ローラー群
44 ニップローラー
5 横延伸工程
6 洗浄・乾燥工程
61 洗浄溶剤
7 再延伸熱処理工程
8 巻取工程
Claims (2)
- 希釈剤とポリオレフィンポリマーとを押出機にて混練し、前記希釈剤が混練されたポリマーを口金からシート状に吐出し、前記口金から吐出されたシートをドラム上で冷却固化した後、前記固化したシートを再び加熱して、複数のローラーによりシートの搬送方向に延伸し、前記シートの搬送方向に延伸した前記シートを冷却した後に前記シート両端をクリップにて把持してテンターに導入し、その後希釈剤を洗浄する1軸または2軸延伸微多孔プラスチックフィルムの製造方法において、
前記複数のローラーのうちの搬送方向最下流のローラー(B)と、前記ローラー(B)の一つ搬送方向上流側でモーターにより駆動されるローラー(A)との間で、前記シートの搬送方向の延伸のうちの最も大きな倍率で延伸を行い、前記ローラー(B)の周速度に対する、前記テンターの搬送方向最上流側の前記クリップの走行速度の比を−3%以上0%未満の範囲内とする、微多孔プラスチックフィルムの製造方法。 - 前記シートの搬送方向の総延伸倍率が4〜12倍であり、
前記ローラー(A)の周速度に対する前記ローラー(B)の周速度の比が2〜6倍であり、
このローラー(A)の周速度に対する前記ローラー(B)の周速度の比を、前記シートの搬送方向の総延伸倍率で除した値が0.3以上である、請求項1に記載の微多孔プラスチックフィルムの製造方法。
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Application Number | Priority Date | Filing Date | Title |
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JP2015031390 | 2015-02-20 | ||
JP2015031390 | 2015-02-20 | ||
PCT/JP2016/051778 WO2016132808A1 (ja) | 2015-02-20 | 2016-01-22 | 微多孔プラスチックフィルムの製造方法 |
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JPWO2016132808A1 JPWO2016132808A1 (ja) | 2018-01-18 |
JP6773023B2 true JP6773023B2 (ja) | 2020-10-21 |
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US (1) | US20180036930A1 (ja) |
EP (1) | EP3260267A4 (ja) |
JP (1) | JP6773023B2 (ja) |
KR (1) | KR102357542B1 (ja) |
CN (1) | CN107249852A (ja) |
WO (1) | WO2016132808A1 (ja) |
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CN109563299B (zh) * | 2016-08-29 | 2021-11-05 | 东丽株式会社 | 微多孔膜、锂离子二次电池和微多孔膜制造方法 |
JP7098931B2 (ja) * | 2016-08-29 | 2022-07-12 | 東レ株式会社 | ポリオレフィン微多孔膜、リチウムイオン二次電池及びポリオレフィン微多孔膜製造方法 |
JP6777931B2 (ja) * | 2016-10-17 | 2020-10-28 | 西工業株式会社 | 可塑剤抽出装置 |
CN110165123B (zh) * | 2019-05-15 | 2022-03-04 | 乐凯胶片股份有限公司 | 聚乙烯微孔膜及其制备方法和应用 |
DE102019119505A1 (de) | 2019-07-18 | 2021-01-21 | Brückner Maschinenbau GmbH & Co. KG | Verfahren und Vorrichtung zur Herstellung eines Schmelze- und/oder Kunststofffilms |
CN112917874A (zh) * | 2021-01-23 | 2021-06-08 | 何涛 | 一种聚氨酯薄膜制备成型方法 |
CN113650208B (zh) * | 2021-08-09 | 2023-05-02 | 界首市天鸿新材料股份有限公司 | 三层共挤隔膜的热处理系统 |
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KR20230102009A (ko) * | 2021-12-29 | 2023-07-07 | 더블유스코프코리아 주식회사 | 분리막 제조용 연신장치 및 이를 이용한 분리막의 제조방법 |
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CN103874725B (zh) | 2011-10-14 | 2015-12-02 | 东丽株式会社 | 多孔性聚烯烃膜和蓄电装置 |
JP6555252B2 (ja) | 2014-03-24 | 2019-08-07 | 東レ株式会社 | 微多孔プラスチックフィルムの製造方法 |
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KR20170118748A (ko) | 2017-10-25 |
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KR102357542B1 (ko) | 2022-02-03 |
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