Method for the manufacture of a foam insulated cabinet wherein the cabinet is cooled during the molding to prevent bulging

Claim 1

THE METHOD OF INSULATING A CABINET HAVING SPACED SHEET WALLS, PROVIDING AN INSULATION SPACE THEREBETWEEN ADJOINING A STORAGE COMPARTMENT, SAID WALLS CAPABLE OF BULGING OUTWARDLY WHEN A PRESSURE IS EXERTED ON THEIR INTERIOR SURFACES, COMPRISING: (A) INSERTING INTO THE INSULATION SPACE, FOAM-FORMING MATERIAL, (B) FORMING WITHIN THE INSULATION SPACE A FOAM WHICH INCREASES IN TEMPERATURE, EXPANDS AND AN OUTWARD PRESSURE ON SAID WALLS, HAVING A TENDENCY TO CAUSE BULGING OUTWARDLY OF SAID WALLS, AND (C) AS THE INSULATION SPACE IS SUBSTANTIALLY FILLED WITH THE FOAMED MATERIAL, FORCEABLY CIRCULATING A COOLING FLUID IN HEAT TRANSFER RELATION WITH THE SPACED WALLS, AT A RATE SUFFICIENT TO PREVENT ANY SUBSTANTIAL INCREASE IN THE TEMPERATURE OF THE FOAM AND THEREBY PREVENT ANY SUBSTANTIAL BULGING OF THE SPACED WALLS.

Claim 2

THE METHOD OF INSULATING A CABINET HAVING SPACED SHEET WALLS, PROVIDING AN INSULATION SPACE THEREBETWEEN ADJOINING A STORAGE COMPARTMENT, SAID WALLS CAPABLE OF BULGING OUTWARDLY WHEN A PRESSURE IS EXERTED ON THEIR INTERIOR SURFACES, COMPRISING: (A) INSERTING INTO THE INSULATION SPACE, FOAM-FORMING MATERIAL, (B) FORMING WITHIN THE INSULATION SPACE A FOAM WHICH INCREASES IN TEMPERATURE, EXPANDS AND AN OUTWARD PRESSURE ON SAID WALLS, HAVING A TENDENCY TO CAUSE BULGING OUTWARDLY OF SAID WALLS, AND (C) AS THE INSULATION SPACE IS SUBSTANTIALLY FILLED WITH THE FOAMED MATERIAL, FORCEABLY CIRCULATING A COOLING FLUID IN HEAT TRANSFER RELATION WITH THE SPACED WALLS, AT A RATE SUFFICIENT TO PREVENT ANY SUBSTANTIAL INCREASE IN THE TEMPERATURE OF THE FOAM AND THEREBY PREVENT ANY SUBSTANTIAL BULGING OF THE SPACED WALLS.