Coating drying curing

The coating is usually in a fluid state. When it is applied to the surface of the object, it is believed that a solid dry and hard coating film is formed. This process is called drying and curing. The process of drying and curing the paint on the surface of the coated object is the process of film formation.

The drying and curing of the coating film is divided into two stages: surface drying (touch drying) and complete drying (hard drying).

The quality of the drying and curing process of the coating film directly affects the performance of the coating film and the appearance of the coating surface.

There are many types of paints and coatings, and the composition of film-forming substances is also very wide. There are many ways to dry and form films. The general atmosphere is as follows:

(1) Solvent volatilization type (2) Oxidation polymerization type (3) Curing agent curing type (4) Baking polymerization type 

There are many equipment for drying and curing the coating film. The use of drying equipment is not only useful for baking polymeric coatings, but other types of paints can often accelerate the drying and curing of the coating film through baking.

Method of drying and curing coating film

Natural drying method

Put the painted products directly in a place with a large workshop, smooth air and sufficient sunshine, and use the natural air for drying, which is called the natural drying method

Forced drying method

The method of heating and baking the coating to make the coating film dry and solidify is the forced drying method. The general forced drying method requires the use of a heating baking device, that is, drying equipment.