초록 ▼

The present invention provides an improved method for making a solar control sheet having one or more metal layers. In the prior art solar control sheets, each metal layer would normally be non-porous so that water vapor would not be readily transmitted therethrough. However, in this invention the m

The present invention provides an improved method for making a solar control sheet having one or more metal layers. In the prior art solar control sheets, each metal layer would normally be non-porous so that water vapor would not be readily transmitted therethrough. However, in this invention the metal layer is rendered porous because it is deposited on a porosity inducing surface. The porosity inducing surface may be the surface of a porous primer layer or a surface which has been roughened. Consequently when the solar control film of this invention is mounted on a window with a water based mounting media, the water can quickly evaporate through the film without causing undesirable cloudiness which is normally associated with water which becomes trapped between the film and the window.

대표청구항 ▼

[ What is claimed is:] [1.] A method for making a water vapor transmissible solar control sheet of the type which comprises a water vapor transmissible film with a light affecting coating thereon; said light affecting coating including a metal layer or a metal compound layer; wherein said method com

[ What is claimed is:] [1.] A method for making a water vapor transmissible solar control sheet of the type which comprises a water vapor transmissible film with a light affecting coating thereon; said light affecting coating including a metal layer or a metal compound layer; wherein said method comprises forming a porous primer layer on a water vapor transmissible film, said porous primer layer having pores greater than 1 nm up to 100 nm in diameter whereby said porous primer layer has a porosity inducing surface on an exposed surface thereof and said porous primer layer being formed by thermally evaporating a compound under a vacuum and depositing said evaporated compound on said water vapor transmissible film and then depositing a metal or metal compound coating on said porosity inducing surface of said porous primer layer to induce the porosity of said coating as said coating is deposited on said porosity inducing surface of said porous primer layer whereby said coating is rendered porous for the transmission of water vapor therethrough.