MICROPOROUS MEMBRANE ROLL FOR BATTERY SEPARATORS AND METHOD FOR PRODUCING SAME

An object of the invention is to provide a display means with which no unevenness is caused on a surface of a separator material in a microporous film roll for a battery separator. Microporous film roll (1) for the battery separator according to the invention has indicator part (18) different in opt...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HONDA Kouichi, YAMAMOTO Yasuhiro, GOTO Shuichi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS CUTTING DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING ELECTRICITY HAND CUTTING TOOLS PERFORMING OPERATIONS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SEVERING TRANSPORTING
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Beschreibung
Zusammenfassung:	An object of the invention is to provide a display means with which no unevenness is caused on a surface of a separator material in a microporous film roll for a battery separator. Microporous film roll (1) for the battery separator according to the invention has indicator part (18) different in optical characteristics therefrom in microporous film (3) for the battery separator. Moreover, a method for producing microporous film roll (1) for the battery separator according to the invention has features of providing indicator part (18) different in light shieldability or light reflectivity therefrom in microporous film (3) for the battery separator.