| 摘要 |
A composite insulating panel comprising a first sheet 2, a second sheet 4 and insulating foam 5 between the first and second sheets, the foam defining a longitudinally extending conduit 7 therein and a barrier 10 between the conduit and the insulating foam wherein the barrier is not planar and extends into the foam. The first or second sheet may be profiled and the profile may define a profile recess which may form part of the conduit. The conduit may be larger than the profile recess and the conduit may comprise the profile recess and a foam recess wherein the foam recess may be opposite and a mirror image of the profile recess. The first sheet may comprise a plurality of longitudinally extending profiled crowns 3, at least some crowns defining the conduit. One of the crowns may define an underlap 8 for joining panels and may be filled with foam. The barrier may comprise a membrane such as foil or tape. The panels may be used as root wall or floor panels and the panels may used as part of a heating or cooling system. A method of manufacturing a composite panel is also claimed. |
