Arrangement for a protective roof comprises linear connections of two foil strips lying on each other to produce gas-tight cells between parallel connecting sites running in the longitudinal direction

摘要

Arrangement comprises linear connections of two foil strips lying on each other to produce gas-tight cells between parallel connecting sites running in the longitudinal direction. The cells have a larger diameter than the distance between the connecting sites. Preferred Features: The upper foil strip is wider than the lower longitudinal edge. The wider upper foil strip lies in uniform longitudinal folds on the lower narrower foil strips.