Abstract: A matrix material for regenerators, comprises a stable basic mesh with wire diameters between 0.005 and 0.015 mm and a lead sheathing with a thickness of 0.025 to 0.075 mm. This lead screen mesh can be stacked very easily to form a matrix material. In order to form the mesh, an available fine-mesh metallic screen mesh, for example, of brass, bronze, or high-grade steel, is etched by a wet chemical or electrochemical means, until the mesh has been thinned down to the required wire thickness of between 0.005 an 0.015 mm. Subsequently, this thinned-down mesh is electroplated with lead up to the desired technological mesh width, or is coated with a lead layer that is 0.025 to 0.075 mm thick.