HEAT INSULATION PIPE AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a heat insulation pipe with high heat insulation, and a method for manufacturing the same.

SOLUTION: The heat insulation pipe 1 includes: a metal tube 4; and a heat insulation layer 5 for covering the outside surface of the metal tube 4. The heat insulation layer 5 is a nonpolyolefin resin layer which contains hollow particulates. The method for manufacturing the heat insulation tube manufactures the heat insulation tube, and includes a molding process in which a nonpolyolefin resin composition containing thermal expansion tiny globules is extruded and molded on the outer surface of the metal tube, and the heat insulation layer is formed.

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