| 摘要 |
The invention relates to superinsulation which is at the same time used as a spacer between two surfaces which can be pressure-loaded, mutually crossing webs being provided in at least two layers, with the interposition of a film. In order to support pressure force, webs which are placed in a cruciform manner one above the other form contact columns at the intersections, which contact columns are compressed to a certain extent when they are stressed. The temperature gradient between the cold boundary surface and the hot boundary surface causes thermal contraction of differing severity of the webs which are arranged in layers, which has the consequence that the intersections of the webs are no longer located one above the other and the contact columns are positioned obliquely. In the worst case, there is no contact column whatsoever. The invention is based on the object of suppressing sliding relative movements of the insulating layers, so that the locations of the contact points of the webs remain defined in order to prevent film damage and hence to prevent adversely affecting the insulating effect. The solution of the object is that the webs are divided into spacer packets and the thermal contraction of the composite material which is used for the webs is matched to the thermal contraction of the cold surface. The intersections are still unambiguously defined after the cooling phase, and the contact columns are maintained, the curvatures and oblique positions of the contact columns being reduced to an acceptable level.
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