LAMINATED POROUS FILM
PROBLEM TO BE SOLVED: To provide a laminated porous film capable of decreasing fractures on a manufacturing stage by reducing variation of pore size and having shutdown characteristics important to obtain high mechanical strength and safety while having excellent gas permeability contributing to bat...
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| creator | TERAKAWA TORU NEMOTO TOMOYUKI MIURA TAKUYA |
| description | PROBLEM TO BE SOLVED: To provide a laminated porous film capable of decreasing fractures on a manufacturing stage by reducing variation of pore size and having shutdown characteristics important to obtain high mechanical strength and safety while having excellent gas permeability contributing to battery performance.SOLUTION: The laminated porous film has at least two layers of a I layer using polypropylene resin as a principal component and a II layer using a resin composition containing polyethylene system resin and styrene based elastomer as a principal component, and has a pin thrust strength of 1.6 N or more, a gas permeability rate at 25°C of 10-1000 seconds/100 mL and a gas permeability rate after heating for 1 minute at 140°C of 50000 seconds/100 mL or more. |
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| 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 |
| title | LAMINATED POROUS FILM |
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