Abstract: In an apparatus for forming pipe insulation discrete panels of generally rigid planar board insulation are fed through a sizing apparatus to control thickness, then fed into a vertically oriented conveyor where adjacent ends of the panels are adhered to one another to form a continuum of panels passing through the conveyor. A horizontally moving severing station cuts the panels into transverse trapezoidal segments, such that each succeeding segment is reversed relative to the adjacent segments with the severing plane being common. A tipping mechanism tips the segments according to their orientation such that all of the segments are received on a horizontal conveyor in the same orientation. An accumulator conveyor abuts the base of each segment against each adjacent segment such that a solid surface is formed for the application a backing to integrate the trapezoidal segments. Alternatively, the panels are sized and end glued on a horizontal conveyor prior to forming a series of trapezoidal segments.

Abstract: Flat, rectangular composite insulation comprising two dissimilar insulating materials on a separate flexible backing material 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 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.