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Field of Application – Powder Coatings Searching for a grain of truth and finding it Since powder coatings are free from Extruding is an important core process any solvents, they are extremely in the manufacture of powder coatings. environmentally friendly and therefore The premixed material used to fill the gaining popularity in many industries. extruder contains everything crucial During application, the powder coating for the subsequent properties of the particles become electrostatically powder coating. At this stage, the solid charged in special powder spray guns. formulation components (pigments, State-of-the-art coating lines can fillers, additives) are mechanically broken achieve a yield of over 95% of the down into pieces at approximately powder coating on the work piece. This 110°C and homogenously worked Application with a powder coating gun layer of powder coating is then melted into the melted binder. The extrudate in the baking oven, where it cross-links experiences extreme shear as it passes to form a crater-free, glossy surface between the screws and walls of the with good leveling properties. That’s extruder. To guarantee the intended the theory. visual (color, gloss) and mechanical (impact resistance, elasticity) properties, In practice though, quality defects the extruding process needs to be can easily occur due to changes in flawless. The finished extrudate is rolled raw materials, formulations, or even out between cylinders, cooled down production processes. This is one of the at room temperature and broken into ways we are able to convince powder chips. coating producers of our laboratory service and our special expertise. The professionals in our powder coating The manufacture and processing of laboratory are able to reproduce each powder coatings is complex: Premixing, step in the process, from premixing to extruding, breaking into pieces, cross-linking, in order to recommend the grinding, sieving, spraying and cross- perfect additive for your application. We linking. It is important that everything work through solutions to problems in is coordinated: the formulation, the manufacturing, and the processing so today with standard formulations which Raw material mix: Powder coating chips and the that the end product is perfect for the manifest unexpected problems under coating after it has been ground job. Transparent or opaque, high-gloss different conditions, tomorrow with or matte, structured or unstructured, it new developments which aim to tap is always a matter of choosing the right new markets. The staff in our powder additive for the job. coating laboratory live and breathe this service concept; as they know that the customer is our most important partner. 24


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