Table of contents:
- New raw materials make it possible
- Protective metal paint: corrosion protection included
- On the way to becoming a bestseller
Video: Protective Metal Coating Makes Metal Coatings Easier And More Economical
2023 Author: Hannah Pearcy | [email protected]. Last modified: 2023-11-26 11:39
Many users want a paint that adheres securely to all surfaces, including critical substrates such as coil coatings or powder coatings. Jansen presented an innovative protective metal coating at FAF 2019, which should make the execution of metal coatings easier and more economical.
Author I Photo: Susanne Sachsenmaier-Wahl
Hardly any painters have yet to pay any tuition fees when reworking coil coatings. The coatings that are applied to metal coils in industrial coating processes must therefore be resistant. In this way, they can withstand the subsequent production steps such as punching, cutting, kinking and folding without tearing or peeling off. Silicon-modified acrylates and polyesters are often used as coating systems. The advantage of these silicone-containing binders is their high weather resistance and long durability. However, liability problems often arise with subsequent renovation coatings. Powder-coated metals, as are often found in factory-coated steel doors, winter gardens or aluminum windows, are also considered problematic surfaces. Many powder coating formulations have waxes added to them that reduce adhesion. In addition, as with coil coatings, the surface structure of powder coatings is extremely smooth due to the high crosslinking density. Nevertheless, there is often no way around such substrates. In industrial areas, for example, facades made of coil coating sheets can be found in many places, and powder-coated metal substrates have long been part of everyday life in construction. In industrial areas, for example, facades made of coil coating sheets can be found in many places, and powder-coated metal substrates have long been part of everyday life in construction. In industrial areas, for example, facades made of coil coating sheets can be found in many places, and powder-coated metal substrates have long been part of everyday life in construction.
At the FAF in Cologne, manufacturer Jansen presented a product innovation that can finally get a grip on these problems. Because the new paint should adhere securely to the above-mentioned substrates. "The 1-component Aqua Metal Protection 3-in-1 offers the painter unbeatable advantages, especially for metal doors, garage doors or facades that were delivered pre-coated," says product manager Frank Jakobs. Painter professionals were able to get an idea of the innovative metal protection at the exhibition stand. The rush of visitors showed how much interest this topic is for the industry. "With the system, we hit the bull's eye," says managing director Peter Jansen proudly. “It was impressive that many painters had already informed themselves about the product in advance and asked specifically.“I want to know from Jansen how liability is achieved on the critical substrates mentioned.
New raw materials make it possible
"Special binder combinations in conjunction with an adhesion promoter guarantee the very best adhesion properties," he reveals and adds: "The substrates must be pre-treated with our metal cleaner. This removes all separating substances from the surface to be coated.”The metal cleaner not only removes oils, greases and soot from metal surfaces, but also acts as a lye on coil coatings and powder coatings. This significantly improves the liability for subsequent coats. Could this cleaner also replace ammoniacal wetting agent washing on galvanized substrates? "The metal cleaner replaces the classic wetting agent wash", confirms the company boss and explains how to clean:"As with wetting agent washing, the surface to be coated is
fleece processed.”For large areas, the cleaner is applied with a pressure sprayer, sanded and then washed with water. In the case of small areas, the cleaner is applied directly with the sanding fleece.
However, secure adhesion to factory-coated metal substrates is not the only advantage of the new paint system. Heinrich Krebsbach, head of research and development at Jansen, was extremely important in addition to the strong adhesion. "An identical surface quality, regardless of whether the paint is being painted, rolled or sprayed." Two additives, Additive A and Additive SRS, are used to adjust the coating and spray quality. “With Additive A, the standard quality of Aqua Metallschutz 3-in-1 can be set to a viscosity that is required for an airless application. Layer thicknesses with a stability of 350 µm wet can be applied. Additive SRS extends the open time when painting and rolling and is used to adjust the viscosity for HVLP devices. With both additives, it is now possible for the first time to set all viscosity levels with just one standard material,”explains Peter Jansen.
Protective metal paint: corrosion protection included
Special additives and new pigments that have been added to the paint formulation also enable increased corrosion protection. It is often possible to do without an anti-rust primer. "The desired degree of corrosion protection is crucial," summarizes Peter Jansen. "For most substrates that are processed by the painter, eg. B. trapezoidal sheets or steel doors, there is very good corrosion protection."
The stew varnish also leaves nothing to be desired in terms of color. “RAL 9006, DB 701, DB 702, DB 703 and copper scrap with metallic gray and white are available as ready-mix colors. There is an almost unlimited choice of colors in our MIX system,”explains company boss Jansen. A top coat varnish rounds off the system. It makes surfaces coated with iron mica smoother and therefore easier to clean. The mica effect and the surface are protected against wear and sweat.
On the way to becoming a bestseller
With so many positive properties that the new paint combines, you could almost think that the much more cumbersome 2K paint technology is superfluous. "Two-component paints are harder and more resistant to chemicals," puts Peter Jansen in perspective. The user decides which properties are desired. “With a facade coating, for example, an elastic coating is an advantage. Hardness and chemical resistance are also not the decisive criteria for steel doors,”he adds. In classic painting applications, the paint innovation could actually become a bestseller. Peter Jansen also sees that the paint is on the right track: "During the trade fair, we were repeatedly confirmed that this holistic approach will change the thinking of the industry."
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