Window film technology
Sputtered Film
Sputtered film is made by vapour-depositing extremely thin metal layers onto the substrate in a vacuum chamber, producing high heat rejection with a more neutral appearance than older metallised films.
Sputtering deposits individual atoms of metal (or metal oxides) onto a polyester substrate inside a vacuum chamber. The resulting layer is thin enough to be optically subtle but dense enough to reject a wide band of solar energy.
Premium sputtered films use noble metals (silver, gold, or alloys) to fine-tune the spectral curve — for example, reflecting near-infrared while letting visible light through. Compared to old-style aluminium-deposited films, well-engineered sputtered films can be selective enough to keep a near-clear appearance.
Sputtered films still contain metal, so they can attenuate signals in some installations. In Singapore, sputtered films are most common in architectural applications and high-performance commercial glazing.