Insert molding for manufacturing metal/amorphous polymer jointed parts using Heat & Cool injection molding

The insert injection molding for manufacturing AL/amorphous polymer jointed parts using H&C injection molding was studied. Different from crystalline polymers such as PP, PPS, PA6, amorphous polymers couldn’t reach high bonding strength at the constant mold temperature condition. By using H&C injection molding method, it was confirmed that even with amorphous polymers, the lap-shear strength increased and the polymer entered sufficiently the micropores on the surface treated AL, as well as crystalline polymers.