Patent ID: 6251495
Filing Date: 2001-06-26
Classification: B32B,E04D,Y10T

Abstract:
A method for producing a product which exhibits (a) a low level of emissivity and (b) a high level of moisture vapor permeability, and which enables trapped excess moisture to be transported from the product while maintaining its effective radiant barrier properties, comprising the steps ofproviding an underlying wood-based substrate having a pair of outer surfaces;adhering a radiant barrier material to at least one of said pair of outer surfaces of said underlying substrate with an adhesive material to form a radiant barrier material covered substrate; andforming said product by introducing a plurality of apertures into said radiant barrier material covered substrate,said apertures extending substantially completely through both said radiant barrier material and said adhesive material forming substantially completely open moisture vapor flow channels which create a high level of moisture vapor permeability through the radiant barrier material and the adhesive material, permitting a substantial amount of trapped excess moisture to pass from said underlying substrate into the surrounding atmosphere to avoid unwanted degradation of said underlying substrate, while maintaining said low level of emissivity of said product, and minimizing the amount of said radiant barrier material which is removed from said product during forming of said apertures thereby maintaining said low level of emissivity of said product.