A process for preparing a fiberglass insulation product, including the steps of: (a) providing a layer of kraft paper, (b) coating the kraft paper layer with from 2 to 10 pounds of HDPE or of polypropylene per 3000 square feet of the paper to form an HDPE-kraft laminate or a polypropylene-kraft laminate,...http://www.google.com.au/patents/US6815380?utm_source=gb-gplus-sharePatent US6815380 - High performance kraft facing for fiberglass insulation
