Cured and Uncured Filter Papers for Air Filters

Filter paper is processed by mixing plant fiber pulp and a little cotton pulp. Because of its fiber structure, leaving numerous tiny holes for liquid particles passing through and leaving solid particles out, which is the basic principle of solid and liquid separation.

The filter paper can separate impurity particles from the liquid and extend engine and auto service life.
High filtration efficiency. 98% filtration efficiency of 4 µm particles and 99% filtration efficiency of 6 µm particles.
Up to 800 L/m²/s air permeability.
Oil filter paper can withstand up to 600 kPa pressure.
Up to 70 70 mN/m high stiffness of cured filter paper.

Surface

Smooth Surface

Corrugated Surface

Crepe Surface

Production Technology

Industrial filter paper can be classified into cured filter paper and uncured filter paper according to dipping process

Cured Filter Paper

The filter paper has not been hardened after being impregnated with Phenolic resin, which can not satisfied the stiffness requirements of filter elements. After being pleated, the filter paper will be heated for 10–15 minutes at the 150 °C temperature.

Cured filter paper is widely used to produce oil and fuel filter element of heavy trucks, auto and cars.

Uncured Filter paper

The uncured filter paper is impregnated with thermoplastic resin (generally is acrylic resin), and it needs little heating during production to guarantee the flexibility under room temperature.

Uncured filter paper is widely used to produce air filter elements of heavy trucks, auto and cars.

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Filter Paper Catalog

Filter Material Catalog

Selection Guide of Filter Paper