Back to results
US 6,143,389 AGranted
Heat-insulating body
AssigneeBayer Aktiengesellschaft
InventorsKarl Werner Dietrich, Heinz Thomas
Life of this patent
Estimating the term…
Abstract
The invention concerns a heat-insulating body comprising: a) a pulverized hard foamed plastics material and optionally an inorganic porous material; and b) a foil enveloping component a). The foil enveloping component a) is evacuated and then hermetically sealed.
Claims8
A heat insulating body comprising
- a) a rigid foamed plastic material comminuted to a powder and optionally an inorganic porous material, wherein said powder has a particle size of from 0.01 mm to 1 mm, and of
- b) a sheet which clads component a),
- wherein the foamed plastic material powder is pre-pressed at pressures of 0.5 to 5 bar and, prior to being clad with the sheet, has been freed from volatile constituents by heating at temperatures from 50 to 250.degree. C. and, optionally, under a low pressure, and wherein the sheet which clads component a) has been evacuated and then hermetically sealed.
Dependencies are inferred from the claim text.