초록 ▼

A laminated window construction includes a solar control film formed by a flexible plastic substrate such as a PET sheet having on one surface a multilayer solar coating. This multilayer solor coating includes at least one thin layer of metal and at least one adjacent adherent layer of a dielectric

A laminated window construction includes a solar control film formed by a flexible plastic substrate such as a PET sheet having on one surface a multilayer solar coating. This multilayer solor coating includes at least one thin layer of metal and at least one adjacent adherent layer of a dielectric material. An energy absorbing safety film of the type normally used in shatterproof glass laminates (e.g., plasticized PVB) is bonded to at least one side, and preferably both sides, of the solar control film to form a composite solar/safety film. This composite solar/safety film is specially designed to contribute, after incorporation into a glass laminate, no more than about two percent of visible reflection (based on total incident visible radiation) which has the effect of substantially masking the visible effects of wrinkles in the solar control film substrate (i.e., the wrinkles are made less visible). This low level of visible reflection contribution is achieved by careful control of the optical properties of the solar control film, the safety film or both. Outer layer transparent glass panes are laminated to one or both sides of the composite solar/safety film to provide a safety window which in one preferred embodiment is a windshield having at least seventy percent normal visible light transmissibility, and a total reflection of visible light of generally less than ten percent.

대표청구항 ▼

A composite solar/safety film for use in a laminated window assembly comprising: a flexible, transparent plastic substrate layer having a carrier surface and an opposing back surface; a multilayer solar control coating on said carrier surface, said coated substrate defining a solar control film; and

A composite solar/safety film for use in a laminated window assembly comprising: a flexible, transparent plastic substrate layer having a carrier surface and an opposing back surface; a multilayer solar control coating on said carrier surface, said coated substrate defining a solar control film; and at least one flexible, transparent, energy absorbing plastic safety layer bonded to a surface of said solar control film; wherein said solar control film contributes no more than about 2% visible reflectance, based on total visible incident radiation, in a laminated window assembly containing said composite solar/safety film laminated to at least one rigid transparent member. The composite solar/safety film of claim 1 wherein said multilayer solar control coating comprises at least one electrically conductive, near infrared reflecting metal layer and at least one adjacent adherent layer of a dielectric material. The composite solar/safety film of claim 7 wherein said multilayer solar control coating comprises, in order outward from said carrier surface, a first layer of dielectric material, a layer of metal, and a second layer of dielectric material. The composite solar/safety film of claim 10 wherein said first and second layers of dielectric material each have a thickness of from about 200 to about 600 angstroms, said dielectric materials has a refractive index of at least about 1.8, said layer of metal has a thickness of from about 60 to about 120 angstroms, and said metal is silver.