MANUFACTURING METHOD OF POLYOLEFIN-BASED MULTILAYER COMPOSITE POROUS FILM

PROBLEM TO BE SOLVED: To provide a manufacturing method of a polyolefin-based multilayer composite porous film which can realize excellent mechanical strength and permeability and low heat shrinkage.SOLUTION: The method includes: a) forming into a sheet a composition including a polyolefin resin and...

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Hauptverfasser:	KIM YONGKYOUNG, KANG GWIGWON, SUNG JUNGMOON, WOO YOUNGJUN, KIM HYUNGMIN, JUNG INHWA, KIM JAEWOONG, JOO DONGJIN, RHEE JANG-WEON
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRICITY GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a manufacturing method of a polyolefin-based multilayer composite porous film which can realize excellent mechanical strength and permeability and low heat shrinkage.SOLUTION: The method includes: a) forming into a sheet a composition including a polyolefin resin and a diluent with a weight ratio of 15-50:85-50; b) stretching the sheet and extracting the diluent to manufacture a film; c) applying heat treatment to the manufactured film; and d) coating one surface or both surfaces of the heat-treated film with a coating solution containing a heat resistant resin, where the step c) and the step d) are continuously performed.SELECTED DRAWING: None 【課題】優れた機械的強度及び透過度とともに低い熱収縮率を具現することができるポリオレフィン系多層複合多孔膜の製造方法の提供。【解決手段】ａ）ポリオレフィン樹脂とダイリューエント（希釈剤）を、１５〜５０：８５〜５０の重量比で含む組成物をシートに成形する段階と、ｂ）前記シートを延伸し、及びダイリューエントを抽出してフィルムを製造する段階と、ｃ）前記製造されたフィルムを熱処理する段階と、ｄ）前記熱処理されたフィルムの片面又は両面を耐熱性樹脂を含有するコーティング液でコーティングする段階と、を含み、前記ｃ）段階及びｄ）段階は連続して実施する。【選択図】なし