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Chrome-free aluminium pre-treatment successful in GSB 10-year long-term test

Fig. 1: Aluminium panel after 10 years' natural weathering at the Hoek of Holland
Fig. 1: Aluminium panel after 10 years' natural weathering at the Hoek of Holland  
Fig. 2: Aluminium panel after 10 years' natural weathering at the Hook of Holland
Fig. 2: Aluminium panel after 10 years' natural weathering at the Hook of Holland  
Fig. 3: GSB "Approved Coated Aluminium" quality seal Photos (1+2): fem Forschungsinstitut Edelmetalle + Metallchemie, investigation report number 5G17046 dated 02/06/2017
Fig. 3: GSB "Approved Coated Aluminium" quality seal

Photos (1+2): fem Forschungsinstitut Edelmetalle + Metallchemie, investigation report number 5G17046 dated 02/06/2017  

ENVIRAL® Oberflächenveredelung GmbH operates successfully as a job powder coater in both Niemegk in Brandenburg and in Pöttelsdorf in Austria. This medium-sized company employs environmentally safe production processes in both works. "We consciously chose plastic powder coating for surface coating customers' merchandise since this coating process is completely free of solvents", explains the manager, Rainer Rogovits.

Environmental awareness for ENVIRAL® already starts beforehand with the pre-treatment of the components to be coated. It is therefore no surprise that this innovative company was the first in Germany to use pre-treatment chemicals which contained no heavy metals back in 1996 and led the way as an architecture powder coater with its "ENVIRAL® chrome-free aluminium pre-treatment" product.

Since the prohibition of chrome(VI)-containing compounds in the construction sector was already in the offing in the 1990s, GSB International was also intensively occupied with the introduction and approval of chrome-free pre-treatment processes. In this context, GSB started a long-term test in 1998, the results of which are now available for ENVIRAL®. In the course of this test, various samples were pre-treated in a coating company certified by GSB and coated with a GSB-approved coating system under the supervision of an independent representative of GSB. After some of the samples had initially passed the accelerated corrosion tests in an accredited test institute, further samples from the same production facility were scratched and exposed to natural weathering at the Hook of Holland in April 1998 ‒ close to the North Sea coast and the industrial climate of Rotterdam. One sample was examined after 3, 5 and 10 years. The result of this long-term test: all samples fulfill the strict GSB International requirements of based on ISO 8565:1992 and EN 12206-1:2004.

ENVIRAL® has also used GSB long-term tested chrome-free pre-treatment chemicals since 1996 in Germany and since 2007 in Austria. Moreover, the company has been approved by GSB as a Master Coater for the powder coating of aluminium since 2011 (in Germany) and since 2014 (in Austria). This investigative report, which is based on real data under extreme conditions, therefore documents not only the quality of the product tested but also the quality of the entire pre-treatment process.


Kategória: Projektek
16.10.2017



ENVIRAL ® Oberflächenveredelung GmbH – A-7023 Pöttelsdorf, Viktor-Kaplan-Allee 3 – Telefon +43 (0)2626 50074 – Telefax +43 (0)2626 50074-74 – 0800 400 150