UV-Cured sealer stops SMC paint pops. (Keeping up with Composites).
The new approach is said to be "an order of magnitude" more effective than in-mold coating in preventing paint pops, and it eliminates about 30 sec of molding cycle time needed for IMC. BASF's Dynaseal liquid coating is sprayed on parts after molding and then quickly cured with a 20-lamp configuration of Fusion UV's microwave-powered F600 equipment. A second, low-temperature heat-curing step is also required to cure a few "shadow areas" remaining after uv curing. Surface quality of parts is said to exceed that obtained with inmold coating.
Meridian began using the new approach in mid-2001 for pickup truck fenders, but it has since expanded its uv-curing line in Kansas City to include a wider range of part sizes and shapes. The line has experienced zero downtime in a year of operation. The partners are convinced that the new approach has broad applicability in other automotive panels and in large parts for agricultural and recreational vehicles and heavy trucks. BASF (248) 304-5702, www.basf.com/usa; Fusion UV (888) 276-8600, www.fusionuv.com
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|Comment:||UV-Cured sealer stops SMC paint pops. (Keeping up with Composites).(Brief Article)|
|Article Type:||Brief Article|
|Date:||May 1, 2002|
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