Filter für Aufgußgetränke, insbesondere Kaffeefilter und Verfahren zur Herstellung eines derartigen Filters

摘要

The invention relates to a filter for preparing beverages, especially a coffee filter, and a process for producing such a filter, in which a fibrous material has pores with an average pore width (d) of at least 0.1 mm measured at a fibre density of about 50 % of the original fibre density of the material. The average pore width (d) is preferably in a range from 0.1 to 0.7 mm approximately and more preferably in a range from 0.1 to 0.4 mm approximately. The material is preferably paper. The pores are also preferably made by pricking or spraying water through the fibrous material, providing an irregular pore edge.