Precipitated silica insulation

Details Precipitated silica insulation Precipitated silica insulation

1985-02-08

1987-01-13

Van Balen, William J.

Stock material or miscellaneous articles

Sheet including cover or casing

53431, 53434, 428 69, 428 76, 4283159, 428446, 428448, B32B 102, B32B 110, B32B 900

Patent

active

046364153

ABSTRACT:
Precipitated silica, formed by the interaction of sodium water glass and sulfuric acid, followed by mechanical processing, is employed as an insulating material having a low thermal conductivity. The precipitated silica is dried, compressed, placed in an evacuable pouch, and evacuated. The resulting board-like insulation configuration is used directly as insulation in, for example, household refrigerators.

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