The figure on the right is an example of surface-adjusted to rough metal surfaces. Polymers areinjected with surface-conditioned metal knife pellets and technically resins in 180MET III-15h bya double-channel mold injector. Hot nozzle temperature 290 °C, mold temperature 60 °C,injection pressure 50 MPa, injection speed 50 mm./s, compressed pressure 40 MPa, compressedtime 4 seconds, cooling time 20 seconds and then subjected to tensile testing on the tensionertest