Abstract: Embodiments of the present disclosure relate to insulation assemblies that may be wrapped around conduits or other structures to form an in insulated conduit assembly. The insulation assembly may include an outer jacket and a plurality of trapezoidal insulation segments coupled to the inside surface thereof. The trapezoidal insulation segments, which may be formed from closed-cell foam, conform to the shape of the conduit when wrapped thereon. Related methods are also provided.

Abstract: An angular insulated duct section and method for insulating and forming same is provided. A multi-layer composite sheet is provided, including a first duct layer of sheet metal having two opposed surfaces. On one of the sheet metal surfaces is attached a viscoelastic foam sheet layer. The foam sheet layer includes at least one of (A) a viscoelastic open-cell foam layer, or (B) a viscoelastic formally closed-cell foam layer in which at least a portion of closed cells therein has been opened. A substantially linear corner bend is formed in the composite sheet so as to form the angular insulated duct section with the sheet metal layer on an outside thereof and the foam sheet layer on an inside thereof. The corner bend is formed without substantial at least one of distortion or deformation of the multi-layer composite sheet adjacent the bend.