| abstract |
Method for making flat gaskets with a soft material layer on a sheet or plate-like support, comprising the following method steps: n applying a soft material mass comprising fillers and a binder as soft material layer onto the support, n if need be, compacting and/or drying the coated support, n impregnating this flat material with impregnating agents containing polysiloxanes which may be cross-linked by means of catalysts, n and, if need be, subsequently after-treating the impregnated sheet or plate by processes such as, for example, curing. n In order to so improve such a method that impregnating agents with a substantially longer pot life may be used, but as the same time the cross-linking reaction of the impregnating agent applied occurs sufficiently speedily and completely, it is proposed that the catalyst be added to the soft material mass prior to or during application onto the support, with the catalyst being distributed substantially homogeneously in the soft material layer formed and exhibiting an inert reaction towards its constituents, in particular, towards the binder emulsion, and that the soft material layer on the support already containing the catalyst be impregnated with polysiloxanes. |