Patent ID: 7323079
Filing Date: 2008-01-29
Classification: B32B,F16L

Abstract:
1. A production process of a core material for a vacuum insulation material having substantially horizontally extending fibers relative to the direction of the plane of said core material, wherein the production process comprises forming under heat a mat of inorganic fibers with an uncured, thermosetting organic binder adhered thereon into said core material while pressing said mat for a period of at least 30 seconds such that a density of said mat increases to 150 kg/m 3 to 400 kg/m 3 during said forming of said core material, whereby said pressing and heating causes said inorganic fibers to extend substantially horizontally relative to the direction of the plane of said core material, wherein said mat of inorganic fibers has a density of from about 3 kg/m 3 to about 27 kg/m 3 prior to said forming of said core material under heat and pressure, wherein said core material after said forming under heat and pressure has a density of from 45 kg/m 3 to 100 kg/m 3 , wherein an amount of solids in said uncured, thermosetting organic binder which is contained in said mat accounts for 0.5 wt. % to 1.5 wt. % of a total amount of said mat, said total amount including said amount of said solids in said thermosetting organic binder.