Embossement

Coating formulators usually have to find a balance between several properties, like flexibility and hardness. Coil coatings for instance must be extremely flexible so that the coated strips can be cut and shaped, without any damage to the coatings. But coil coatings used for building components have to be hard enough to avoid dirt pick up.

1K stoving polyurethane coatings are well known in the coil coating industry for their unique balance between hardness and flexibility.

Figure 1: Part of a Coil Coating Line

Polyurethane coatings are flexible enough to withstand intensive layout of the coated material without damages.

In coil applications, the metal sheet is coated before being converted to the finished products. This industrial processing exposes the coating to a rough treatment.

Thanks to their flexibility, polyurethane paints can be embossed without cracking, chipping or being scratched.