| 摘要 |
<p>A deformable sheet material consists at least partly of a sheet metal or metal foil which is corrugated, eg. by rolling, in continuous waveform in two directions (A, B) substantially orthogonal to each other. The sheet material may consist of aluminium foil with a thickness between 0.05 - 0.4 mm designed as a ribbon or a strip which prior to the rolling is folded in the longitudinal direction where an intermediate layer, e.g. of aluminium, can be placed between the two material layers.</p> |
