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Examples of filter papers

The paper is often crêped to improve porosity. The filter papers may also be treated with reagents or impregnation to get the right properties.

Air filters[edit]

Air filter paper in an auto engine

The main application for air filters are combustion air to engines. The filter papers are transformed into filter cartridges, which then is fitted to a holder. The construction of the cartridges mostly requires that the paper is stiff enough to be self-supporting. A paper for air filters needs to be very porous and have a weight of 100 - 200 g/m2.

examples of filter papers

examples of filter papers

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