| 摘要 |
In a flat, flexible laminated body, fine-grained or fibrous active substance particles (1) are enclosed between a plastic film (2) and a fibre-containing cover layer (4) which are held together by means of holding fibres (6) which are densely distributed over the entire surface and are anchored simultaneously in the cover layer (4) and in the plastic film (2), so that the active substance particles (1) are at the same time also immobilised. The holding fibres (6) are removed by means of fibre-orienting needles of the cover layer (4) and are held elastically, for example, in the penetrations produced in the plastic film (2) by the needling. The active substances serve for treating a liquid or gaseous medium circulating between the laminated body and the surroundings. The treatment comprises, for example, a sorption of substances, for example with subsequent desorption for the purpose of regenerating the active substances, an emission of substances, an ion exchange or a catalysis of chemical reactions. <IMAGE> |
