Linetec anodize etch chemistry


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Linetec has changed from a traditional, caustic anodizing etch process to a more environmentally friendly acid etch process, it reports. The new process creates a frostier matte finish that helps hide small defects, such as die lines, flow lines, minor corrosion and scratches that may occur on the aluminum surface of architectural products, according to the company. Anodizing highlights aluminum’s metallic appearance, and because it is an integral part of the substrate, the anodic coating results in a hard, durable substance providing excellent wear and abrasion resistance with minimal maintenance, the supplier notes. The process byproducts from the acid etch bath are recyclable, and the acid etch anodize process also reduces waste and energy used with traditional etch processes.