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Powder-coating
January 2007
BRISTA focuses on pure corrosion protection – by powder coating of the highest quality!
BRISTA is expanding its spectrum of surface finishing services at the Höingen site and investing in a 2500 m2 new, powerful facility for powder coating galvanized and non-galvanized steel and aluminium.
The new plant should be up and running by April 2007.
Products often have to be hot dip galvanized first and then coated; this can result in enormous transport costs. By combining galvanizing with powder coating, BRISTA offers its customers significant logistical advantages! Additionally, BRISTA has invested in a 5500 m² external storage facility, which provides BRISTA customers with interim storage of larger quantities of goods if required.
By connecting to the existing hot dip galvanizing plant BRISTA is now in a position to offer its customers first-class corrosion protection as a duplex system (hot dip galvanizing and coating). This system is characterized by very high durability and extreme stability. In addition, coating of this nature facilitates the accomplishment of excellent decorative properties.
The high level of competence in the field of hot dip galvanizing is complemented and extended by powder coating. BRISTA customers have the opportunity to improve the corrosion protection and aesthetics of their products with only one supplier. Customers can be assisted at all times in selecting the necessary and/or most appropriate surface treatment with comprehensive technical know-how.
With its fully automatic cabin and an additional 2-man manual cabin, BRISTA is able to respond flexibly and rapidly to customer specified colour changes.
In the new plant parts with a length of up to 8,000 mm, height of 2,700 mm, width of 800 mm, and weight of up to 1000 kg can be coated.
Quality begins with the pre-treatment of materials!
The goods to be powder coated are transported on the crossbars of a power & free conveyor. A residue-free, perfectly clean and smooth surface is the most important prerequisite for optimal coating. And BRISTA offers two variants!
On one hand, with stainless steel shot blasting (so-called "sweeping"), which is an alternative to chemical pre-treatment. This procedure is used specifically for hot dip galvanized parts in order to roughen the surface for better adhesion of the powder coat. On the other hand, BRISTA offers the chemical four-chamber pre-treatment system with subsequent chrome-free passivation in order to increase the corrosion resistance of the surface and enhance the coating's adhesion properties. Of course both variations can be combined for optimum results.
After pre-treatment all of the products go through a drying process, as only an absolutely dry surface ensures a perfect coating. Additionally, with galvanized goods this heat treatment facilitates the so-called "outgassing" of the fresh zinc coating.
The actual coating occurs in the fully automatic or, if necessary, in the manual powder cabin. Electrostatic powder coating involves the material to be coated being positively charged. An electric field is established and the negatively charged powder particles are drawn by the positive field of the material surface, where they collect evenly. The powder cabin is equipped with a cyclone and an absolute filter. This suction facility is configured so as to prevent powder particles from entering the hall.
After the coating process the goods are transported through a furnace, in which the powder particles melt at a temperature of around 180° C to create a layer of coating.
The powder coatings used are environmentally-friendly and do not contain any hazardous substances. All production processes are also non-polluting and have no effect on the employees. The waste water from the chemical pre-treatment is prepared internally via an evaporator and recycled in new baths - because environmentally-friendly production is also a main priority at BRISTA!
We hope we have been able to awake your interest and would be delighted to hear from you. Contact us.
BRISTA powder coating:
