Patent ID: 6511730
Filing Date: 2003-01-28
Classification: B32B,E04B,Y10S,Y10T

Abstract:
A composite sandwich panel comprising:a core structure which comprises a first face and a second face located on opposite sides of said core structure; at least one face sheet which is adhesively bonded to either said first face or said second face of said core structure, said face sheet comprising: an adhesive layer located adjacent to said face of the core structure, said adhesive layer consisting essentially of a phenolic adhesive wherein the peel strength of the adhesive bond between said face sheet and said core structure is at least 80 N/76 mm; a fire protection layer, located adjacent to said adhesive layer, said fire protection layer comprising a phenolic resin and a sufficient amount of one or more fire protection agents to provide said face sheet with a flammability level of below 20/20 OSU wherein said one or more fire protection agents are dispersed in said phenolic resin; and at least one fiber layer located within said face sheet.