| 摘要 |
<p>Flat, rectangular composite insulation comprising two dissimilar insulating materials (44, 46, 112, 114) on a separate flexible backing material (42, 111) is described. At least one of the two dissimilar materials is rigid. V-grooves are formed in the dissimilar materials extending from the surface of the insulation opposite of the flexible backing (42, 111) up to, but not through the flexible backing. The V-grooving permits the rigid composite insulation to be fitted to a curved surface such as a pipe, grease duct cable tray, or structural steel support. Wires (24) may be spaced across and attached to the outer surface of the flexible backing material. An adhesive (S) may be present on at least one face of at least some of the grooves. As dissimilar insulating materials (a) mineral wool - ceramic fibres, (b) mineral wool - polyurethane foam and (c) mineral wool - foam glass may be used. <IMAGE></p> |
