Continued development of Reinforced Reaction Injection Molding (RRIM) polyurea polymers and toughness,blister resistance and large-part processing as exterior vertical body panels has launched E-Coat-compatible exterior outers into automotive assembly-line operations.This allows automotive OEM design to take advantage of the unique molding shapes for side outers and fenders while reducing weight,assembly (DFA) and time/operations costs (DMF).Polyurea RRIM body panels have been successful in meeting the demanding auto industry requirement for lightweight,damage-resistant exterior outer panels as an economical alternative to steel.Design freedom advantages,low prototype cost and tooling savings through predictive modelling have allowed the commercial use of RRIM body panels.Having these exterior body panels pass through the E-Coat lines with the complete steel assemblies also avoids costly space and time requirements,as well as "add-on" body shop space.Since the 1998,SPECTRIM HH390 has had outstanding success as a SMC and steel replacmeent for exterior body panels on two GM truck programs.
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