DEWATERING FILTER AND METHOD FOR THE PRODUCTION THEREOF

摘要

The invention relates to a dewatering filter (20) for producing paper comprising multi-layered watermarks, said dewatering filter comprising a support filter (22) and perforated watermark sheet metal (24) which is connected to said support filter (22), wherein the support filter (22) and the watermark sheet metal (24) are embossed together in the form of the watermark which is to be produced.