Patent ID: 6786992
Filing Date: 2004-09-07
Classification: B29C,B29K,B29L,B32B,B65D,C08J,Y10S,Y10T

Abstract:
In the method of making a dunnage platform comprising the steps of:providing a core made from expanded polystyrene in the general shape of a rectangular slab with one side having a plurality of legs extending therefrom; providing first and second high impact polystyrene sheets; providing a forming mold with an interior that is complimentary to a shape outlined by an edge of said core; retaining said core within said mold with a first side of said core and at least half the thickness of said core extending therefrom; heating said first sheet to a temperature in a range of 293Â° F. to 375Â° F.; placing said heated first sheet onto portions of said core that extend from said mold, thereby forming strengthened polystyrene proximal to the surface of said first side and proximal to a surface of at least half of the edge of said core; retaining said core within said mold with a second side of said core and at least half the thickness of said core extending therefrom; heating said second sheet to a temperature in a range of 293Â° F. to 375Â° F.; and placing said heated second sheet onto portions of said core that extend from said mold.