Patent ID: 8241699

Claim:
A method for continuously producing a film containing a vapor-depositing material on a substrate, using a roll-to-roll system vapor deposition device including a chamber, an evaporation source located in the chamber for evaporating the vapor-depositing material, and a transportation section located in the chamber for transporting the substrate of a sheet type, by moving the substrate by the transportation section, the method comprising: a step (A) of transporting the substrate to a first zone, a second zone, a third zone and a fourth zone in this order, the first to fourth zones being provided in the chamber so as not to overlap with one another with respect to the evaporation source; wherein: the vapor-depositing material is an active material for battery electrodes, the step (A) includes steps of: (a) while moving the substrate in the first zone in a direction toward the evaporation source, allowing the vapor-depositing material evaporated from the evaporation source to be incident on a surface of the substrate in a first direction inclined with respect to the normal to the surface of the substrate, thereby depositing the vapor-depositing material on the surface of the substrate; (b) while moving the substrate in the second zone in a direction away from the evaporation source, allowing the vapor-depositing material evaporated from the evaporation source to be incident on the surface of the substrate in a second direction inclined oppositely to the first direction with respect to the normal to the surface of the substrate, thereby depositing the vapor-depositing material on the surface of the substrate; (c) while moving the substrate in the third zone in the direction toward the evaporation source, allowing the vapor-depositing material evaporated from the evaporation source to be incident on the surface of the substrate in a third direction inclined on the same side as the first direction with respect to the normal to the surface of the substrate, thereby depositing the vapor-depositing material on the surface of the substrate; and (d) while moving the substrate in the fourth zone in the direction away from the evaporation source, allowing the vapor-depositing material evaporated from the evaporation source to be incident on the surface of the substrate in a fourth direction inclined oppositely to the first direction with respect to the normal to the surface of the substrate, thereby depositing the vapor-depositing material on the surface of the substrate, and a ratio of vapor-depositing material deposition amounts in the first, second, third and fourth vapor deposition zones is 1:2:2:1.