The base material of the coated steel sheet can be cold rolled steel sheet, galvanized steel sheet or other coated steel sheets. The surface coating material is plastic or resin film. Therefore, the coated steel sheet takes into account the characteristics of steel and plastic in both use and decoration. Reflected in the following points:
1 Especially strong moisture and water resistance. Suitable for wet occasions.
2 Good formability. After cold bending, there will be no paint drop at the squeezed part of the bending roll.
3 Due to the wide variety of plastic films after color printing, the color and variety of coated steel sheets are unmatched by coated sheets. Therefore, the share of coated steel sheets in interior decoration is also larger than that of coated sheets.
4 The coated steel plate is a composite plastic film under a certain pressure, the film layer is strong, and the bonding strength is high. Coupled with the use of steel plates as the base material, more and more building exterior wall panels use coated steel plates to replace coated panels.
The laminating process is a comprehensive technology, which involves many factors, such as plastic film, adhesives, solvents, the condition of the primer surface of the substrate, mechanical control and environmental conditions. To obtain high-quality laminates, it is necessary to control the changes in the above-mentioned factors during the process and coordinate the relationship between them.
Laminating process is an important method for manufacturing laminated products. At present, the application of laminating process for pasting metal plates and plastic films mainly includes wet laminating, dry laminating, hot pressing and cold pressing.
