| 摘要 |
<p>An insulated foam board is manufactured by leading a first facing 1 from a reel and laying down liquid foam reactants. A second facing 2 from a supply reel is laid over the reactants forming a sandwich. The foam is expanded in an oven 12 and the board is cut to a desired length. One or both facings 21, 22 are removed and re-wound onto a reels 24, 25 for re-use. A coating in the form of a metallised paint is applied 30, 35 in-line to one or both faces of the foam core 23, after removal of the facings 21, 22. The painted boards have enhanced heat insulation properties.</p> |
