Abstract: A single-side embossed color steel sheet, and a method for manufacturing the same are disclosed. The steel sheet comprises a steel sheet substrate, a zinc or zinc alloy-plated layer, a non-chromate or chromate pretreated layer, a primary coat paint layer of modified epoxy or modified polyester, a color base paint layer, a printed layer, and a top coat clear paint layer. The printed layer exhibits a feeling of solidity with various feelings of texture and colors. The top coat clear paint layer serves to protect the printed layer from contaminants. The color steel sheet exhibits a remarkably enhanced feeling of solidity at an irregular surface thereof, and has enhanced contaminant resistance properties and environmental friendliness, thereby satisfying requirements for aesthetic design and functionality of products.

Abstract: Disclosed herein is a highly weather resistant colored steel plate which comprises a steel plate as a substrate, a zinc- or zinc alloy-plated layer formed on the steel plate, a layer formed on the zinc- or zinc alloy-plated layer and pretreated with chromate or non-chromate, and a highly weather resistant film formed on the chromate or non-chromate layer, wherein the highly weather resistant film includes a polyester-based primer coated onto the chromate or non-chromate layer and a polyester top coat coated onto the polyester-based primer, the top coat being produced from a mixture of a main resin obtained by reacting an oil-free polyester-modified resin and a polyisocyanate compound, a melamine resin as a crosslinking agent, and other additives.

Abstract: Disclosed-herein is a highly weather resistant colored steel plate which comprises a steel plate as a substrate, a zinc- or zinc alloy-plated layer formed on the steel plate, a layer formed on the zinc- or zinc alloy-plated layer and pretreated with chromate or non-chromate, and a highly weather resistant film formed on the chromate or non-chromate layer, wherein the highly weather resistant film includes a polyester-based primer coated onto the chromate or non-chromate layer and a polyester top coat coated onto the polyester-based primer, the top coat being produced from a mixture of a main resin obtained by reacting an oil-free polyester-modified resin and a polyisocyanate compound, a melamine resin as a crosslinking agent, and other additives.

Abstract: A method for manufacturing a gravure transfer-coated continuous metal plate, wound in the form of a coil, comprising: coating, over the metal plate, a primer coating material; curing the primer coating material to form a lower coating layer; thermally transferring a desired pattern from a gravure transfer sheet onto the lower coating layer, thereby forming a transfer coating; coating, over the transfer coating, an upper coating material of thermosetting fluorine resin, thermosetting polyester resin, or UV-thermosetting polyurethane-acryl-based resin; and curing the upper coating material to form an upper coating layer. The primer coating material consists essentially of: 20-40% polyester resin having a number average molecular weight of 5,000-20,000 and a glass transition temperature of 10-50° C., 4-15% melamine resin, 1-10% urethane resin, 0.3-3% isocyanate, 15-35% pigment 30-50% hydrocarbon/ester-based mixed solvent, and 1.5-3% additives.

Abstract: Disclosed is a technique for manufacturing a Ni—Fe alloy thin foil using a single-step electrodeposition-based plating process without requiring processes such as melting, casting, forging, and rolling. A manufacturing apparatus is provided which includes an electrolyzer adapted to receive an electrolyte containing, as a major component thereof, a solution of nickel and iron compounds, a cathode partially dipped in the electrolyte and arranged in such a fashion that it is rotatable, an anode completely dipped in the electrolyte and arranged in such a fashion that it faces the cathode while being spaced apart from the cathode by a desired distance, and a current supply device adapted to generate a flow of current between the cathode and the anode, whereby a Ni—Fe alloy thin film is electrodeposited to a desired thickness over a surface of the cathode facing the anode, and then peeled off from the surface of the cathode, so that a continuous Ni—Fe alloy thin foil is manufactured.

Abstract: Alloy coating composition that is Al 55% by weight, Zn 43.4% by weight, Si 1.6% by weight, comprising addition of Ti to said composition at a concentration of 0.0001-0.5% by weight of said composition. Ti-Al alloy is melted preliminary in a premelt pot (2), and it, thus Ti, is introduced into the bath of coating pot (1). Then a steel plate is passed through the coating pot (1); and thus, the surface of the steel plate is treated with Ti which stifles growth of spangle particles.