METHOD OF APPLICATION OF THE PAINT-AND LACQUER COATING ON THE METALLIC STRIP Russian patent published in 2007 - IPC B05D1/28 B05D7/14 

FIELD: metal-working industry; other industries; methods of application of the paint-and-lacquer coating on the metallic strips.

SUBSTANCE: the invention is pertaining to the metal rolling production and may be used in the sheet-rolling shops coatings sections incorporating the aggregates for the polymer coatings of the rolled coiled stock. The method of application of the paint-and-lacquer coating on the painting surface of the strip includes at least entrapping of the liquid paint-and-lacquer material by the entrapping roll gyrating in the underpan with the enamel, transfer of the enamel layer from the entrapping roll onto the applying roll and on the painting surface of the strip a and the constant feeding of the paint-and-lacquer material into the underpan. Distinctiveness of the method is the preliminary filtration of the paint-and-lacquer material (PLM) before its feeding into the PLM underpan, and feeding of the new potion of the PLM under pressure into the depth of the enamel volume in the underpan in two mutually opposite directions concerning the middle of the strip in width in parallel to the zone of the entrapping of the enamel by the entrapping roll. The technical problem being solved by the invention consists in separation of the enamel fed into the underpan from foreign impurities, improvement of its movement and circulation in the paint-and-lacquer underpan with the purposes of the averaging of its properties along the width of the entrapping roll and reduction of the amount of the rejected cold-rolled strips at the expense of the defects of the surfaces of the paint-and-lacquer coatings.

EFFECT: the invention ensures separation of the enamel fed into the underpan from foreign impurities, improvement of its movement and circulation in the paint-and-lacquer underpan with the purposes of the averaging of its properties along the width of the entrapping roll, reduction of the amount of the rejected cold-rolled strips at the expense of the defects of the surfaces of the paint-and-lacquer coatings on the metal strips.

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