Injecting polymer materials into molds causes complex behaviors. Molecular chain elongation and orientation during filling and relaxation during packing and cooling are all highly dependent on design complexity and the molding process. Introducing fibers into the polymer adds another degree of complexity to the fill-to-warp behavior. In this lesson you will learn the impact fiber-filled materials have on shrinkage and warpage behaviors.
Topic in this lesson include: the types of fiber-filled polymers available for molding, molding and processing factors that impact fiber length, how fiber orientation differs throughout a cross-section of a part, and how gate location impacts fiber orientation and resulting warpage inside a part.