Patent ID: 7790076

Claim:
A method for manufacturing foam insulating liners, comprising: providing a mold having a first half and a second half; applying a quantity of non-adhering material in an amount sufficient to prevent a resin material from sticking to an interior surface of each of said first half and said second half; placing a first side of a pre-formed insulating liner frame in said first half of a said mold; placing a second side of said pre-formed insulating liner frame in said second half of said mold; sealing together said first half and said second half of said mold and forming a void between said first and second sides of said pre-formed insulating liner frame; forming a foam insulating core between said first and second sides by disposing a quantity of foam material into said void between said first side and said second side of said insulating liner frame within said sealed mold; removing a foam insulating liner consisting of said foam insulating core positioned between said first and second sides from said mold; fitting a frame about a perimeter and sides of said foam insulating liner; and wherein disposing said quantity of foam material comprises vacuum infusing said quantity of foam material.