| 摘要 |
<p>In order to obtain a semifinished product, in particular a wall covering plaster, which behaves as applied plaster and is easy to produce, process and shape, an artificial resin mortar (11) is applied on a flat side (21) of a nonwoven strip (2) with a thickness from 0.05 mm to 3 mm and an air permeability from 500 l/m<2>.s to 4,500 l/m<2>.s. The artificial resin mortar (11) has the following composition in the non-hardened state: 50 to 90 wt % of a powdery component composed of finely granulated cement and finely granulated aggregates and 10 to 50 wt % of a liquid component with elastic properties, as well as a spreading value from 100-350 mm. Depending on an advance speed from 1 to 15 m/min, the mortar (11) penetrates at least partially into the pores (22) of the nonwoven strip (2) which ensure its air-permeability and forms in the hardened state at least one flexible mortar layer (1) and an impregnation layer (3) in the pores (22).</p> |
