Coating surface of hydrophobic microporous thermal insulation material.

摘要

A surface of a hydrophobic microporous thermal insulation material (1) is coated by first heating the surface of the microporous thermal insulation material so as to provide a hydrophilic surface layer on the hydrophobic material. Subsequently, a water-based coating, such as a water-based silicate adhesive, is applied to the hydrophilic surface layer of the hydrophobic material. An abrasive- and/or impact-resistant cover (7), such as a glass fibre cloth, may be applied to the coating. <IMAGE>