Nordson ASYMTEK
Nordson ASYMTEK (www.nordson.com) recently introduced a film coater designed for automated, selective, and precision application of conformal coating materials. According to Nordson ASYMTEK, Select Coat SC-280 provides greater than 99% fluid-transfer efficiency, improving material utilization by 30-50%, and selectively coats complex circuit boards in seconds. The company also notes that, because coating material is not atomized and is precisely applied to the selected areas, overspray, masking, and rework associated with conventional conformal coating processes are minimized or eliminated. The SC-280 has a single-valve design and comes in two versions, circulating (SC-280C) and non-circulating (SC-280N). It handles viscosities of less than 100 cps. Coating thicknesses range from 0.5-8 mils for solvent-based materials. A variety of cross-cut nozzles are available to dispense film pattern widths from ~0.25-0.75 in. (6-19 mm). Each nozzle is engineered to deliver edge definition with a tolerance of ± ~0.030 in. (0.75 mm). The film coater has a 0-90° rotating axis. An optional five-axis accessory allows tilting of the nozzle to coat all four sides and under the components.
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