- STANDARD system
It is a polyester-based system with an excellent stability when exposed to weather conditions and a good resistance to chemicals.
- SUPER system
These are superpolyester-based and silicone-polyester systems. The resulting films are characterized by high resistance to the exposure to the sun, and have an excellent resistance to chalking and color changing.
- PVdF system
These systems are based on polyvinyldenfluorurate mixed in variable ratios with acrylic resins. Since these films are highly chemical inert, the life of these coatings is particularly long when they are applied to building elements that are in touch with the external environment. The Metcno Coil Coating line can also manufacture Plastisol films, which are formed by a dispersion of PVC in a plasticizer; the thickness can vary between 100 and 200 microns. Plastisol films are suitable for particularly corroding environments, like iron metallurgic and chemical plants, but are mainly used in North European countries, where the insulation is lower than in the Mediterranean area. In fact, since these films are particularly sensitive to the UV rays, they easily chalk and change their color.
In this case, the metal support used for the Metecno pre-painting is made of aluminum alloys of grade 3105 H18 or 3003 H18. The aluminum strip is also subject to a pre-treatment aimed at preparing the surface for the paint adhesion before painting, but using different chemicals from those used for steel. The strip is painted with the same methodology and process as those used for steel, and the painting cycles are the same as those described for steel, and also the behavior of the organic coatings is similar, considering the differences of the metal support.