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Technical Paper

Processing Improvements in Low Density RIM Composites

The advantage of internal mold release in the production of automotive parts such as exterior fascia and body panels is well known. Recently a new type of internal mold release technology has emerged in the area of low density RIM for interior door panels. Products have been developed for both low density reinforced RIM and structural RIM applications without sacrificing physical properties. This latest technology has the potential for producing hundreds of parts after a single application of external mold release. The exact number of parts that can be obtained will vary depending on several factors including the initial condition and design of the mold. Although able to release from aluminum or steel, adhesion to vinyl cover stock is not greatly affected. Therefore, these products can be used for both pour behind vinyl and substrate only applications.