Proper drying of TPV (Thermoplastic Vulcanizate) particles before processing (extrusion or injection molding) is essential to prevent surface defects, foam, and hydrolysis, even though TPV is less hygroscopic than nylons or polyesters.

Processing TPE (Thermoplastic Elastomer) particles in injection molding and extrusion requires attention to their unique properties: they are shear-sensitive, require low compression, and have high viscosity melt.