Patent ID: 8177954

Claim:
A plating processing method, which comprises: continuously electroplating a surface of a film having a surface resistivity of from 1Ω/square to 1000Ω/square, while transporting the film, wherein: the transportation speed of the film is from 1 m/minute to 30 m/minute; a plurality of plating tanks are present, and the method further comprises applying a washing process and a water-elimination process to the film subsequent to completion of the processing in each plating tank and before processing in any adjacent downstream plating tank; the remaining water content after eliminating water in the water elimination process is 5 ml/m 2 or less; each of the plurality of plating tanks comprises: a plating bath for storing plating liquid; and a feeder roller provided in an inlet side of the plating tank, and the feeder roller guides the film to the plating bath, wherein the distance between the lowest contacting part of the feeder roller in the inlet side with the film and the plating liquid is from 0.5 cm to 15 cm; each of the plurality of plating tanks further comprises: a feeder roller provided in an outlet side; a liquid elimination roller rotatably disposed below the feeder roller in an outlet side; and a spray for water washing for eliminating plating liquid from the film, the spray being disposed between the liquid elimination roller and the feeder roller in an outlet side; and a voltage of from 1 to 100 V is applied to each of the plating tanks, and an amount of electric current on an inlet side of the first tank is from 1 A to 30 A.