TWIN-SCREW EXTRUDING KNEADER AND METHOD FOR PRODUCING ELECTRODE MIXTURE USING THE SAME

摘要

Provided is a technology capable of producing a paste with desired viscosity. A twin-screw extruding kneader includes: a housing; two rotational shafts arranged inside the housing; and paddles arranged around each rotational shaft. A paddle length L1 and a clearance C1, and a paddle length L2 and a clearance C2 are set to satisfy a conditional expression shown in the following Math. 1, the paddle length L1 being the sum of thicknesses of all the paddles arranged around the rotational shaft in a stiffly kneading zone, the clearance C1 being the smallest gap width between the paddle arranged in the stiffly kneading zone and the housing, the paddle length L2 being the sum of thicknesses of all the paddles arranged around the rotational shaft in a diluting zone, the clearance C2 being the smallest gap width between the paddle arranged in the diluting zone and the housing.; (L1/C1)/(L2/C2)≧1.4   [Math. 1];L1: Paddle length in stiffly kneading zone C1: Clearance in stiffly kneading zone;L2: Paddle length in diluting zone C2: Clearance in diluting zone