F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 59/06 (2006.01)
Patent
CA 2154450
A vacuum heat insulating material (6) formed by packaging tightly under vacuum a molded body (1), which comprises needle crystals of calcium silicate combined three-dimensionally, in containers (2, 3, 4) of a compound film formed by laminating metal foil on a plastic film or vapor depositing a metal or metal oxide on such a film, the heat conductivity of this material 6 at 20 ·C being not higher than 0.015 Kcal/m hr ·C. This vacuum heat insulating material (6) does not cause environmental problems concerning the generation of dust when it is thrown away, and, moreover, it displays excellent heat insulating performance without using CFCs.
On obtient un matériau (6) thermo-isolant sous vide en conditionnant sous vide et de façon serrée un corps (1) moulé, qui comprend des cristaux en aiguille de silicate de calcium disposés en trois dimensions, dans des enveloppes (2, 3, 4) d'un film composite formé par stratification d'une feuille métallique sur un film de matière plastique ou par dépôt en phase vapeur d'un métal ou d'un oxyde métallique, la conductivité thermique de ce matériau (6) ne dépassant pas 0,015 Kcal/m.h ~C à 20 ~C. Ce matériau (6) thermo-isolant sous vide ne cause aucun problème écologique en ce qui concerne l'apparition de poussières lorsqu'on le jette et il offre de plus une excellente isolation thermique sans CFC.
Kirby Eades Gale Baker
Mitsubishi Chemical Corporation
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