Laminated microporous film and method for manufacturing the same, and separator for battery

The present invention provides a laminated microporous film with good balance between gas permeability and film-breaking temperature, the laminated microporous film being formed by laminating a first microporous layer composed of a first resin composition, and a second microporous layer composed of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MANAGO, TERUAKI, AZAMI, YOKO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention provides a laminated microporous film with good balance between gas permeability and film-breaking temperature, the laminated microporous film being formed by laminating a first microporous layer composed of a first resin composition, and a second microporous layer composed of a second resin composition having a melt point lower than the first resin composition, wherein the melting viscosity A of the first microporous layer is 10000 Pa.S or more, and a ratio A/ B of the melting viscosity A to the melting viscosity B of the second microporous layer is 0.01 to 10.