Application of automotive coating

Automotive coatings are divided into two categories: metallic (base coat) with commercial line 54 and 69 and solid (polyurethane) with commercial line 21.

Top coat or varnish on metallic base coat colors are from the family of polyurethane clears with hydroxyl acrylic base, which are hardened in two-part 2k with isocyanate hardener.

And in single-coat solid colors, our only final layer is white or Alvan paint from the 2k two-component polyurethane family with isocyanate hardener.

Metallic basecoat paint is based on a combination of several different types of resin under a layer of a mixture of saturated polyester resin with melamine formaldehyde resin, which causes it to be used both in air-dry and kiln-fired forms.

All automotive coatings have pigments that are very resistant to sunlight, and in addition, the resins themselves are the most resistant to atmospheric conditions, humidity and sunlight.

In automotive coatings, nitrocellulose liners, stone putty and instant putty, which have the ability to stick to iron and galvanized, are used as a base and primer. Today, one of the most up-to-date products in the underbody of the car body is the use of polyurethane full-solid liner, which is a good alternative to instant liner and wash primer. Excellent stickiness of this galvanized polyurethane liner is one of its most important features.

A colorless and gray plastic lining is also used on the pp polypropylene parts of the car bumper. And then the next layers are applied.

The stone putty that is used for automotive coatings must have the ability to stick to galvanized and iron surfaces, and at the same time, it must have high hardness and standard flexibility.

In automotive coatings, each layer must be selected from the best quality raw materials so that the final color of the base coat and solid has the maximum match of color, gloss and quality with the original body.