Ultem®/PEI film offers extreme heat resistance, coupled with high mechanical strength, stiffness, UV stability, and broad chemical resistance. This combination of properties allows this film to be utilized in a wide variety of demanding new design concepts including aerospace, automotive, and even medical applications. PEI is a functional product for 3D printing due to its extremely smooth finish, high temperature resistance, and ability to provide print placement security while releasing prints smoothly. Ultem/PEI is a “no surface prep” material which allows for no major surface modifications like sanding materials or applying special adhesives before each print.