Patent ID: 6926785

Claim:
A method for producing an integral laminated 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 to the surrounding atmosphere while maintaining its effective radiant barrier properties, comprising the steps of: providing lignocellulosic material; treating said lignocellulosic material with a first adhesive bonding material; forming a mat comprising a plurality of layers of said treated lignocellulosic material; providing a radiant barrier material; treating said mat comprising said plurality of layers of lignocellulosic material and/or said radiant barrier material with a second adhesive bonding material; applying said radiant barrier material to an outer surface of said mat of treated lignocellulosic material to form a radiant barrier material covered mat of treated lignocellulosic material; and bonding together in situ said mat of lignocellulosic material with said first adhesive bonding material, and bonding said radiant barrier material to said mat of lignocellulosic material with said second adhesive material by curing said first adhesive bonding material and said second adhesive material, to form an integral laminated radiant barrier material covered lignocellulosic substrate;and introducing a plurality of apertures into said radiant barrier material prior to and/or subsequent to the formation of said radiant barrier material covered mat of treated lignocellulosic material.