Peter Jahoda - Ridgeway VA,
Ricardo Romero Orozco - Downey CA,
428 418, 428412, 428339, 428220, 427492
A non-laminated low-emissivity window film includes a flexible polymeric substrate having a first surface and an opposed second surface. A metal-adhesion promoting layer is disposed on the first surface, a reflective metal layer is disposed on the metal adhesion-promoting layer, and a transparent polycarbonate coating is disposed on the metal layer. The window film can have an emissivity of about 0.27 to about 0.33 and a visible light transmission of at least about 17 percent.