THERMALLY INSULATIVE SLEEVE

摘要

A sleeve (10) for providing thermal insulation to elongated substrates (30) is disclosed. The sleeve (10) is formed from a composite sheet (10) having a tough, resilient reinforcing layer (14) to which are attached a metallic reflective layer (16) on one side and a fibrous, non-woven insulative layer (12) on the opposite side. The composite sheet (10) is reverse folded (20) with the reflective side (16) facing outwardly and the insulative layer (12) facing inwardly. A seam (16) is formed lengthwise along the sleeve (18) in spaced relation to the reverse fold (20), thereby defining a central space (28) for receiving the elongated substrates (30). The seam (26) is formed by fusing the inwardly facing insulative layer (12) on each side of the reverse fold (20) together.