METHOD FOR ETCHING MAGNIFICATION OF ALUMINIUM FOIL

摘要

PURPOSE: A method for etching an aluminium foil is provided, which can be carried out by using even a weak acid, and is improved in the etching rate and thereby the productivity. CONSTITUTION: An aluminium foil (1) is easily etched even in the low voltage and current by forming scratches on the surface prior to etching. The horizontal scratch (4) is formed by passing the aluminium foil (1) through the first rollers (2). The vertical scratch (5) is formed by passing the aluminium foil (1) through the second rollers (3). The first rollers (2) and the second rollers (3) has sand brushes on their surface.