| 摘要 |
A heat insulating body comprising a) a rigid foamed plastic material comminuted to a powder, and of b) a sheet which clads component a), wherein the sheet which clads component a) has been evacuated and then hermetically sealed. Component a) may additionally comprise an inorganic porous material. The foamed plastic material powder has been 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. |
