The application process has a direct impact on the appearance, the manufacturing and material costs, as well as on the long-term performance of the coated cookware.
A basic requirement for all coating processes is a thorough pre-treatment of the substrate. Degreasing, sandblasting with non-corrosive material, etching, lapping, brushing or chemical conversion are the most common processes. Subsequently, the coating material is applied, and finally it is baked at temperatures between 200 and 420 °C.
Let’s have a look at the actual application technologies:
This »pre-coat process« is important for coating frying utensils and bakeware because of its economic way of working.
With this roller application technique, max. 3 mm thick aluminium can be processed and coated in up to 5 thin layers.
Because aluminium shapes can be formed after processing, the dry film thickness is limited to 12–25 µm.
The process is closely related to the roller coating process, but here the application aggregates are depositing heads and not rollers.
The surface is completely smooth and very attractive. As regards material thickness and coating layer, the same conditions as the roller coating process apply.
Especially for high-quality products and professional requirements
»Finish first« is the motto when it comes to the coil coating process, a very efficient method of producing a large quantity of bakeware. Large stainless-steel or aluminium sheet rollers are coated and cured over counter-turning rollers on both sides. During just one curing run, both sides can be coated with up to 2 layers. The visually very attractive material is then further processed by the bakeware manufacturer into its final shape.
An almost universal method of application with a perfect surface on all substrates. Preferably with two to four layers, dry film thicknesses of up to 50 µm can be achieved.