| 摘要 |
A description is given of a block, for example a vertically perforated brick, having inner cavities (2) which carry out a heat-insulating function, and of a method of producing said block. In order to reduce the radiant component of heat transfer in these dark cavities (2), the inner surface of the cavities (2) are provided with a heat-reflecting coating. Said layer may contain aluminum or similar heat-reflecting components. The layer is applied by vapor deposition or spraying, if appropriate also on the abutment side (1) of the block, and can be applied before the brick is fired or, specifically, fired in. It is also possible to add a watersoluble heat-reflecting component to the clay, which component, during the drying and/or firing process, migrates onto the surface. |
