Evaluation of mold roughness influence on injected thin micro-cavities

摘要: Due to its ability produce low-cost and high repeatable micro-polymeric parts, micro-injection molding is emerging as one of the most promising enabling technologies in many different fields. When approaching micro-scale, issues related process should be addressed, especially thickness cavities becomes very thin. In particular, mold roughness affects surface quality micro-components produced, like macro-molding, but this could also encompass complete filling parts. The main objective present paper evaluate influence on non-Newtonian fluid flow during thin micro-cavities where condition affect due phenomena neglected macro- or mesoscale less important boundary conditions. part design was properly conceived order neglect effect dimensions geometry highlight contribution phase. experimentation performed using with values decreasing depths from 200 50 μm, considerably lower than 250 μm found literature manufactured by micro-electrical discharge machining (μ-EDM). results experiments are discussed show that cavity-surface scale decreased. cavities, higher promotes component.