Patent ID: 6551435
Filing Date: 2003-04-22
Classification: B29C,B29K,B32B,Y10S,Y10T

Abstract:
The process of forming an insulated foam board system comprising:providing a first polymeric web of foam, said first polymeric web of foam comprising a material selected from the group consisting of alkenyl aromatic polymers, polypropylenes, polyethylene terephthalates, polyethylenes and combinations thereof; providing a second polymeric web of foam, said second polymeric web of foam comprising a material selected from the group consisting of alkenyl aromatic polymers, polypropylenes, polyethylene terephthalates, polyethylenes and combinations thereof; transporting said first polymeric web of foam through a first set of a plurality of rollers; transporting said second polymeric web of foam through a second set of a plurality of rollers; inserting a coated or laminated central layer to provide flexibility between said first polymeric web of foam and said second polymeric web of foam, said central layer comprising a material selected from the group consisting of crystal polystyrene, impact polystyrene, polyethylene terephthalate and combinations thereof, and bonding said central layer to said first polymeric web of foam and said second polymeric web of foam so as to form said insulated foam board system; wherein the density of the insulated foam board system is from about 1 to about 4 lbs/ft3.