As larger and more complex objects are candidates for UV-curable coatings, the challenges of exposing curable surfaces to adequate UV energy become greater. It is desirable to position UV lamps for the most effective exposure, and the least wasted energy.
Recent advancements in hardware and software have enabled a new UV process management methodology based upon the establishment of UV process windows. Process windows are a toleranced set of critical parameters which establish where one's UV process works best.
Glass fiber reinforced, or composite plastics are attractive alternatives to conventional sheet metals in automobile construction. The common Sheet Molding Compound (SMC) is the main example. It is composed of an unsaturated polyesters with additives, mineral extenders and the glass fibers.