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...

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Bibliographic Details
Main Authors MANAGO, TERUAKI, AZAMI, YOKO
Format Patent
LanguageChinese
English
Published 01.03.2010
Subjects
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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Summary: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.
Bibliography:Application Number: TW200998125786