Filter paper for air is a crucial component in engine protection filters. Unlike filter papers for oil or fuel, air filter paper needs to be more open in order to accommodate the low viscosity of air. This means that the forces acting on the dust particles are lower, allowing for efficient filtration.

Typically, air filter paper weighs between 100-200 g/m2 and is highly porous. This porosity is achieved by using long fibers that are partially mercerized. Mercerization is a process where the fibers are treated with acid to retain a cylindrical, uncollapsed form. This ensures that the paper remains open and allows for effective air filtration.

In heavy-duty applications, such as earth-moving machines, air filters need to withstand extremely heavy dust loads. This is why heavy-duty air filters are specifically designed to have a high dust-holding capacity. These filters are categorized separately as Heavy Duty air filters and are capable of functioning in harsh environments.

Air filtration can be achieved through volume or surface filtration. Heavy-duty filters primarily rely on surface filtration. This means that the dust particles are captured on the surface of the filter paper, forming a cake. Over time, this cake can be rinsed off, extending the life of the filter.

Overall, filter paper for air plays a crucial role in engine protection. Its open structure and high dust-holding capacity make it an ideal choice for heavy-duty applications. Whether it is used in heavy equipment or regular engines, air filter paper ensures that the air entering the engine is free from harmful dust particles, allowing for optimal performance and longevity.

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