Patent ID: 6589399
Filing Date: 2003-07-08
Classification: C25D

Abstract:
An electrolytic apparatus for treating a strip with electrolyte comprising:a first electrode unit having an inlet side, an outlet side and a pair of spaced apart electrodes disposed between the inlet side and the outlet side; a first liquid feeding unit provided at the outlet side of the first electrode unit for feeding electrolyte into the first electrode unit; a first waste liquid unit provided at the inlet side of the first electrode unit for recovering electrolyte from the first electrode unit; a liquid electrolytic tank provided downstream the first liquid feed unit of the first electrode unit, said liquid electrolyte unit arranged in fluid communication with the first electrode unit through said first liquid feeding unit; a second electrode unit having an inlet side, an outlet side and a pair of spaced apart electrodes disposed between the inlet side and the outlet side; a second liquid feeding unit provided at the outlet side of the second electrode unit for feeding electrolyte into the second electrode unit; a second waste liquid unit provided at the inlet side of the second electrode unit for recovering electrolyte from the second electrode unit; said liquid electrolytic tank located upstream the second waste liquid unit of the second electrode unit, said liquid electrolyte tank arrange in fluid communication with the second electrode unit through said second waste liquid unit; a first liquid throttle unit comprising a pair of seal rolls disposed between the first liquid feeding unit at the outlet side of the first electrode unit and the liquid electrolyte tank; said first pair of seal rolls spaced facing each other in a non-contacting state for passage of the strip therebetween at a spacing between the seal rolls of 0.1 mm to 5 mm wider than the thickness of the strip to be passed through said seal rolls; a second liquid throttle unit comprising a pair of seal rolls disposed between the second waste liquid unit at the inlet side of the second electrode unit and the liquid electrolyte tank; said second pair of seal rolls spaced facing each other in a non-contacting state for passage of the strip therebetween at a spacing between the seal rolls of 0.1 mm to 5 mm wider than the thickness of the strip to be passed through said seal rolls.