Provided is a vehicle-coolant heat insulating tube imparted with a heat insulation property and capable of maintaining the shape in manufacturing and usage. A vehicle-coolant heat insulating tube 1 having a flow path 4 for a vehicle coolant includes: a flow path formation layer 2 defining and forming the flow path 4 therein; and a heat insulating layer 3 covering the flow path formation layer 2 from a radially outer side. A porosity of the flow path formation layer 2 is smaller than 208, and a porosity of the heat insulating layer 3 is 20% or greater and smaller than 80%.
VEHICLE-COOLANT HEAT INSULATING TUBE AND MANUFACTURING METHOD THEREFOR
2025-02-27
Patent
Electronic Resource
English
IPC: | F16L PIPES , Rohre / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29K Index-Schema für Formmassen oder Materialien für Verstärkungen, Füllstoffe oder vorgeformte Teile, z.B. Einlagen in Verbindung mit den Unterklassen B29B, B29C oder B29D , INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |
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