| 摘要 |
<p>The cube-shaped plastics foil is held at opposite edges by C-profiles, with its double-walled edge and an enclosed core profile inserted in them. The core profile dia. exceeds that of the C-profile opening width. This is used in a heat-insulating wall and/or roofing element for a hangar-type structure. Core profiles are rod-shaped or tubular, and provision is made for widening the interval between C-profiles, to stretch the foil. Here the core profile is in two parts (3a,3b) with a third foil sheet (7) stretched between them. The parts may have interacting protrusions and recesses (4,5) over all their surfaces in contact with each other. They are pref. homologous. Specification published 29.4.82.</p> |
