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Color coated roll is hot galvanized sheet, hot aluminized zinc sheet, galvanized sheet as the substrate, after surface pretreatment (chemical degreasing and chemical conversion treatment), coated with a layer or several layers of organic coating on the surface, and then baked and cured products.Also because coated with a variety of different colors of organic paint color steel coil plate hence named, referred to as color coated roll.

Color coated roll has light weight, beautiful and good corrosion resistance, but also can be directly processed, the color is generally divided into gray, blue, brick red, mainly used in advertising, construction, home appliances, electrical appliances, furniture industry and transportation industry.

The coating structure:

V Type of coating structure

2/1: Apply twice on the upper surface, once on the lower surface, and bake twice.

2/1m: Coat the upper and lower surfaces twice and bake once.

2/2: Coat the upper and lower surfaces twice and bake twice.

V Purpose of different coating structure:

2/1: Monolayer back paint for corrosion resistance, poor scratch resistance, but with good adhesion, main

To be applied to sandwich plates;

2/1M: The back paint has good corrosion resistance, scratch resistance and processability. It has good adhesion

It is suitable for single-layer pressing plate and sandwich plate.

2/2: Double back paint has good corrosion resistance, scratch resistance and processing formability. It is mostly used for single coat

Laminated plate, but its poor bonding, not suitable for sandwich plate.

Color-painted coil substrate classification:

Hot dip galvanized substrate

The organic coating coating on the hot dip galvanized steel plate is hot dip galvanized color coating plate.Hot galvanized color coated plate has the protective effect of zinc, the organic coating on the surface also plays the role of isolation protection, prevent rust, the service life is longer than hot galvanized plate.The zinc content of hot dip galvanized substrate is generally 180g/m2(double-sided), and the zinc content of hot dip galvanized substrate for building external use is the highest 275g/m2.

Hot coated aluminized zinc substrate

Adopts hot coated aluminum zinc steel plate (55%Al-Zn) as the new coating substrate, usually containing aluminum zinc of 150g/㎡(double-sided).The corrosion resistance of hot – plated aluminum-zinc sheet is 2-5 times that of hot – plated zinc sheet.Continuous or intermittent use at temperatures up to 490 ° C does not result in severe oxidation or scaling.The ability to reflect heat and light is 2 times that of hot dip galvanized steel plate. The reflectivity is greater than 0.75, which is an ideal building material for energy saving.

Zinc plated substrate

Electro-galvanized sheet as the substrate, coated with organic coating baking products for galvanized color coated plate, because the zinc layer of galvanized sheet is thin, usually zinc content is 20/20g/m2, so the product is not suitable for use in the outdoor production of walls, roofs, etc.But because of its beautiful appearance and excellent processing performance, it can be mainly used for home appliances, audio, steel furniture, interior decoration, etc.

Color-coated coil substrate properties

Electroplating zinc substrate: the coating is thin, corrosion resistance is not as good as hot dip galvanized substrate;

Hot dip galvanized substrate: a thin steel plate immersed in molten zinc groove, so that its surface adheres to a layer of zinc, this galvanized sheet has good coating density and weldability.

Hot aluminized zinc substrate:

The product has 55% Al-Zn plating, with excellent corrosion resistance, its service life is more than four times that of ordinary galvanized steel plate.It is the replacement product of galvanized sheet.

Product features:

(1) has good durability, corrosion resistance compared with galvanized steel longer life;

(2) has good heat resistance, compared with galvanized steel plate at high temperature is not easy to discolor;

(3) It has good thermal reflectivity;

(4) it has similar processing performance and spraying performance as galvanized steel plate;

(5) It has good welding performance.

(6) It has good performance-price ratio, durable performance and competitive price.As a result, both architects, engineers and manufacturers have been widely used in industrial buildings, steel structures and civil facilities, such as garage doors, eaves and roofs.

color coating roll application:

Color coated roll has light weight, beautiful and good corrosion resistance, but also can be directly processed, the color is generally divided into gray, blue, brick red, mainly used in advertising, construction, home appliances, electrical appliances, furniture industry and transportation industry.

Color coating roll used according to the use of different environment to choose the appropriate resin, such as polyester silicon modified polyester, polyvinyl chloride plastic sol, polyvinylidene chloride, etc.Users can choose according to their use.


Post time: Jan-14-2021