Device and method for producing electrode foil for electrolytic capacitors

A method for producing an electrode foil for an electrolytic capacitor, the method comprising:

• a preparation step of setting a metal foil having a strip shape in a conveyance mechanism, the metal foil including a porous part on a surface of the metal foil;
• and
• a layer formation step of forming a dielectric layer on the porous part by an atomic layer deposition method while the metal foil is conveyed,
• wherein:
• the dielectric layer is formed using a head unit that supplies and removes a source gas for forming the dielectric layer,
• the layer formation step is performed in a film formation region where the dielectric layer is to be formed by the head unit while the metal foil is supported by a support belt from a side opposite to the head unit, the metal foil being interposed between the support belt and the head unit, and
• in the layer formation step, the support belt includes a contact part in contact with the metal foil in the film formation region, the contact part being moved in a direction identical to a direction in which the metal foil is moved while the metal foil is supported in the film formation region.