Tank wall cooling is operated in confined space, so there is a high demand for cooling materials. Typically, construction crews use hanging baskets to work in narrow Spaces with a width of 0.6 m. High difficulty, high risk and low efficiency. Therefore, in addition to the strict implementation of HSE management in the construction process to ensure safe construction, the material requirements also need to be light and good insulation effect, easy to site construction cutting operation, but also need to ensure its ideal insulation effect.

　　As an important structural component of low temperature insulation system of LNG storage tank, elastic felt insulation layer is located between the inner tank wall and expanded perlite, which is used to absorb the impact of expanded perlite on the inner tank under various working conditions. In order to maintain the integrity of the tank and prevent damage to the inner wall of the tank, in some designs, elastic felt is used separately as insulation material for the inner wall of the tank.

　　The elastic felt uses phenolic resin as binder, its raw material is similar to glass wool, but the production method is different from fiber bedding. Elastic felt fiber layer, layer curl, has good compression and tensile strength. Lng storage tank technology has gradually developed in China in recent years. As a natural and clean fuel, natural gas has promoted the development of many related industries because of its compatibility with the current concepts of environmental protection, energy saving, low carbon emission reduction and so on. Perlite, Lng elastic felt and other low temperature special insulation products are also gradually developed under this concept, such as the current production and research and development of elastic felt brand Uetersen, is a mainly for the use of thermal insulation, cold protection and fire protection direction of special materials research and development and production as one of the brand. Uetersen Lng elastic felt, as a felt body material specially used for tank insulation, is used for ultra-low temperature insulation and fully meets the application standards for tank low temperature insulation.