JPH0325899B

PURPOSE:To enhance the coefficient of utilization of an active material and the strength of an electrode plate, by filling a slurry in the pores of porous plate, and then immersing the plate in the slurry in a slurry container to decrease large bubbles. CONSTITUTION:A guide roller 17 is provided so that a portion thereof is always immersed in a slurry 4 and the roller is rotated in accordance with the movement of a porous plate 2 which is moved in the direction of an arrow shown in the drawing. Since the guide roller 17 is rotated, the slurry 4 in a slurry container 3 clings to the surface of the roller so that the slurry is conveyed upward into contact with the bottom 18 of the porous plate 2. At that time, the slurry 4 enters into the pores 15 of the porous plate 2 upward and drives air out of the pores. The pores 15 of the porous plate 2 are thus filled with the slurry 4 before the plate is immersed in the slurry in the slurry container 3. As a result, the air is hardly trapped at the place of the immersion of the porous plate 2 in the slurry 4 as done in a conventional art.