The elastic felt insulation layer serves as a key structural component of the cryogenic insulation system for LNG storage tanks, positioned between the inner tank wall and expanded perlite. It is designed to absorb the impact of expanded perlite on the inner tank under various conditions, helping to maintain the integrity of the storage tank and prevent damage to the inner tank wall. In some designs, elastic felt is also used as the insulation material for the inner wall of the tank.
