Compound foil comprises a light and weather resistant outer layer and a thermoplastic main layer separated from one another by an intermediate water vapor barrier layer

摘要

The compound foil (1) comprises a light and weather resistant outer layer (a) and a thermoplastic main layer (b) separated from one another by an intermediate layer (c) serving as a barrier against water vapor. An independent claim is also included for an insulating material incorporating on its outer side the proposed compound foil.