Apparatus and method of manufacturing laminated steel sheet

An apparatus for manufacturing a laminated steel sheet, comprising:

• an uncoiler for unwinding a coiled base steel sheet and supplying the uncoiled base steel sheet;
• a cleaner comprising an acid pickling unit for pickling the surfaces of a hot rolled steel sheet with acid pickling water when the base steel sheet is the hot rolled steel sheet, an alkali cleaning unit for cleaning the surfaces of a galvanized steel sheet with alkali cleaning water when the base steel sheet is the galvanized steel sheet, and a rinsing unit for rinsing the base steel sheet with rinsing water, means for selectively using the acid pickling unit or the alkali cleaning unit on the basis of which kind of base steel sheet is supplied from the uncoiler;
• a first drier for drying the base steel sheet cleaned by the cleaner;
• a heater for heating the base steel sheet dried by the first drier;
• a laminator for attaching lamination sheets to the surfaces the base steel sheet heated by the heater to form a laminated steel sheet;
• a cooler for cooling and hardening the lamination sheets attached to the base steel sheet of the laminated steel sheet;
• a second drier for drying the cooled lamination sheets attached to the surfaces of the base steel sheet of the laminated steel sheet;
• and
• a re-coiler for winding the dried laminated steel sheet in the form of a reel.