Patent ID: 7611761
Filing Date: 2009-11-03
Classification: E04B,F16L,F25D,Y10T

Abstract:
1. Vacuum heat insulating material comprising: a core material containing inorganic fibers, wherein the inorganic fibers include silicon oxide as a main component, a Si—OH/Si—O ratio of a surface of the inorganic fibers being made equal to or higher than 0.1 and equal to or lower than 1.0 by treating the inorganic fibers with moisture, and the core material being a formed body of the inorganic fibers provided by an adhesion of the inorganic fibers to one another by an intermolecular interaction of Si—OH groups existing at the surface of the inorganic fibers; and an exterior covering material having gas barrier performance, the vacuum heat insulating material being provided by depressurizing interior of the exterior covering material.