Abstract: In a multi-stage washing system comprising a plurality of washing tanks, fresh liquid is applied over a treated material at a front position in the zone of a furthermost tank, whereas in the tanks excluding a nearest tank, washing liquid is pumped from the individual washing tanks in an amount of more than that of the applied fresh liquid and applied over the treated material at a front position in the zones of individual adjacent washing tanks placed after said individual washing tanks in an amount of the applied fresh liquid and a rear position in the zones of said individual washing tanks in the remaining amount.

Abstract: In continuously blanking a coiled metal sheet, an operator rapidly detects parts of welded connection of a metal sheet without any manual touch of the metal sheet, removes the parts of welded connection and restarts the apparatus for blanking the metal sheet.

Abstract: A cylindrical can being transported along a vertical circular passageway is passed through a first application zone where a part of the given amount of white paint is applied to all the outer surface of the can body and then advanced to a second application zone where the rest of said white paint is applied to all the said coated surface.

Abstract: A drawn and ironed can body with integral bottom and a drawn and ironed can seamed with a top closure at the opening end are designed for packaging pressurized beverages and made of a sheet material thinner than that heretofore used for conventional drawn and ironed cans, and the top closure and the bottom resist buckling as might be caused by the actual internal pressure produced therein.