| 摘要 |
<p>Thermal insulation with at least one evacuated space, within which several layers of a non-metallic material are arranged. Between two respective successive layers, an intermediate layer serving as a spacer is arranged. The layers forming the insulating material consist preferably of mica paper. The intermediate layers are formed by layers of fiberglass fabric or mica powder. Glass or ceramic fiber paper may also be used for forming the intermediate layers.</p> |
