Patent ID: 6192703
Filing Date: 2001-02-27
Classification: C09K,F25B,F25D,F28D,Y02A,Y02B,Y02E,Y10T

Abstract:
An insulating vacuum panel having an R value per inch of 20 or greater at an evacuated pressure of at least 100 Torr, said panel comprising a microporous, open cell silica foam or a precipitated silica insulating support member enclosed within a sealed, flexible polymeric envelope, said envelope comprising a heat-sealable barrier film, said barrier film comprising a multiple layer laminate comprising at least one polyethylene terephthalate layer and at least two barrier layers selected from the group consisting of polyvinylidene chloride, polyvinyl alcohol, polyamide, polyolefin and aluminum foil; or a biaxially oriented monolithic liquid crystal barrier film wherein said enclosed insulated vacuum panel is useful as insulation to maintain an essentially constant temperature in a closed structure.