Patent ID: 6269945
Filing Date: 2001-08-07
Classification: A23L,B65D,Y02W

Abstract:
A packaging system for preserving a perishable item, wherein said packaging system is comprised of a gas permeable tray comprised of open-cell foam, wherein said gas permeable tray is disposed within a sealed, oxygen-impermeable barrier bag, and wherein:(a) said gas permeable tray is comprised of foam material, wherein at least about 20 volume percent of said foam material is open cell foam comprised of a multiplicity of open cells, said open cells comprise a gas phase which comprises less than about 0.05 volume percent of oxygen, and said open cells have an average cell diameter of from about 0.0001 to about 0.030 inches,(b) said gas permeable tray is comprised of a bottom wall and at least one side wall integrally connected to said bottom wall and extending upwardly and outwardly from said bottom wall at an angle of from about 1 to about 90 degrees, wherein each of said bottom wall and said side wall have a thickness of from about 0.025 to about 0.50 inches,(c) said gas permeable tray has a density of from about 0.2 to about 55 pounds per cubic foot,(d) said sealed barrier bag has an oxygen permeability of less than 10 cubic centimeters per 100 square inches per 24 hours, and(f) the atmosphere within said sealed barrier bag is comprised of inert gas and less than about 0.05 volume percent of oxygen.