Editing Filter paper (section)

===Coffee and tea===
{{main|Coffee filter|Tea bag}}
Historically, [[blotting paper]] or [[cloth filter coffee|cloth]] were used to extract filter coffee.

Modern coffee filters of paper are made from about 100 g/m<sup>2</sup> [[crêpe paper|crêped paper]]. The crêping allows the coffee to flow freely between the [[Filtration|filter]] and the filtration [[funnel]].<ref name="Gagné_2020"/> The raw materials ([[pulp (paper)|pulp]]) for the filter paper are coarse [[softwood|long fiber]], often from fast growing trees. For example, [[Melitta]] uses up to 60% of [[bambus]] in their filters since 1998.<ref name="Melitta_1"/> Both [[Bleaching of wood pulp|bleached]] and unbleached qualities are made.<ref name="Paulapuro_2000"/>{{rp|page=114}} Coffee filters are made in different shapes and sizes to fit into different holders.
Most notable are the (paper) [[coffee filter system]]s introduced by [[Melitta filter system|Melitta]] (1908, 1932, 1936, 1965), [[Chemex filter system|Chemex]] (1941) and [[Hario filter system|Hario]] (2004<!-- some sources state 2005 -->). 

Important parameters are strength, compatibility, efficiency and capacity.

Tea bags also work as a kind of paper filter. They are made from [[Abacá|abacá fibers]], a very thin and long fiber manilla hemp. Often the paper is augmented with a minor portion of [[synthetic fiber]]s. The bag paper is very porous and thin and has high [[wet strength]].<ref name="Paulapuro_2000"/>{{rp|page=114}}