| abstract |
The invention provides an aluminum plate that is provided with good coating properties and high sealing ability with active materials and the method of manufacturing the same. Of the aluminum plate, at least two of through holes that penetrated the thickness part of the aluminum plate are provided and the average opening diameter of the through holes is more than 0.1 μm and less than 100 μm. The aluminum plate comprising the through hole A as after mentioned, the through hole A possessing a shape of maximum diameter Ra inside the aluminum plate and the maximum diameter Ra and the minimum diameter Rb satisfying the expression, namely, 1>Rb/Ra≧0.1. |