| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide vacuum heat insulating material having improved heat insulating effect by aligning fiber in a direction vertical to a heat transmission direction from a sheet front surface to a back surface, namely, in a horizontal direction to the sheet surface with aiming at fiber structure (fiber arrangement) improving heat insulating effect to remarkably reducing shot and using inorganic fiber of small fiber diameter, and a method for manufacturing inorganic fiber sheet for vacuum heat insulation. <P>SOLUTION: Laminated plural sheets of inorganic fiber sheet made by a wet papermaking method with using inorganic fiber as a main component is used as a core material in this vacuum heat insulating material. Content of shots of particle diameter 30μm or greater in the inorganic fiber is 0.1 mass% or less, average fiber diameter of the inorganic fiber is 0.2-6μm, and the inorganic fiber is aligned in the horizontal direction to the sheet surface. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
