| 摘要 |
The panel consists of a main layer which is made of chipboard and on whose upper face a covering is applied, which covering constitutes the treading surface. The lower surface is combined with a layer of material which has a low heat transmission coefficient and is covered with a thin metal sheet made, for example, of aluminium, which sheet has the function of reflecting the incident radiation in the event of a fire, thereby allowing a long interval of time before the panel gives way and safety margins for evacuation of the premises. <IMAGE> |
