UV-cure powder coatings protect vinyl flooring.A novel protective surface finish for industrial vinyl flooring uses uv-cured powder coatings Powder coating is a type of dry coating, which is applied as a free-flowing, dry powder. The main difference between a conventional liquid paint and a powder coating is that the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension . A French maker of industrial and commercial floor coverings, Groupe TLM TLM Telemetry TLM Transaction Level Modeling TLM Tout Le Monde (French) TLM The Leprosy Mission (Northern Ireland) TLM Transmission Line Matrix TLM The Little Mermaid (fairy tale) , was looking to improve the stain and scratch resistance of its PVC PVC: see polyvinyl chloride. PVC in full polyvinyl chloride Synthetic resin, an organic polymer made by treating vinyl chloride monomers with a peroxide. interlocking interlocking /in·ter·lock·ing/ (-lok´ing) closely joined, as by hooks or dovetails; locking into one another. interlocking Obstetrics A rare complication of vaginal delivery of twins; the 1st floor tiles. The company chose uv powder coatings due to such advantages as reduced waste, no VOCs, low-temperature cure (PVC melts at 175 to 180 C), small space requirements and fast curing. DuPont Powder Coatings (U.S. office in Houston) developed a clear uv powder that met TLM's requirements. DuPont worked jointly with Fusion UV Systems, Gaithersburg, Md., and French finishing line integrator Cy Franchon. A new automated production line for 400 tiles/hr was built for TLM. A robot loads tiles from pallets on a flat conveyor running at 9.8 ft/min. Automated electrostatic Stationary electrical charges in which no current flows. For example, laser printers and copier machines place a positive charge of the image on a drum, and negatively charged toner is attracted onto the drum. The toner is then transferred to positively charged paper and fused to the paper by heat. spray guns apply 35 to 40 microns of the uv powder. TLM's patented PVC compound eliminates the need for a surface treatment to promote adhesion of the powder. Next, the tiles enter an infrared oven where the powder melts and flows at 266 F. The tiles then pass beneath a row of eight Fusion UV F300 lamps covering a width of 49.2 in. to cure the coating. Another robot palletizes the tiles for shipping. Fusion UV: (301) 990-8700/www.fusionuv.com * DuPont: (800) 247-3886/ www2.dupont.com/Powder/en_US |
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