China Synthetic Fiber Medium Pocket Filter Suppliers - EN 779 Efficiency M5 to F9 | Factory Direct Quality
Pockets filters are widely used in central air conditioning ventilation systems, pharmaceutical, hospital, electronics, food and other industrial environments, and can also serve as the medium filter for high-efficiency air filters.
This is the key component that determines filtration efficiency, primarily made from synthetic chemical fibers.
Main Types
Material Form and Manufacturing Process
Non-woven Fabric: The vast majority of synthetic fiber bag filters utilize the non-woven fabric process. Fibers are randomly interlocked through methods like needle punching, melt blowing, or spun bonding, forming a three-dimensional web of varying depth.
Structural Characteristics: This disordered structure creates countless curved, intricate micron-sized channels that capture particulate matter through the following mechanisms:
Support and Structural Frame Materials
To enable the soft filter media to function stably, the following structural materials are required:
Frame Materials
The efficiency of pockets filters ranges from 45% to 95%, and they can be selected based on specific requirements. The rational selection of filter efficiency and face velocity contributes to comprehensive economic benefits.
For filters made of the same material, higher efficiency typically results in greater resistance and higher cost, while lower efficiency leads to reduced resistance and cost. Altering the air velocity will also affect resistance, efficiency, and the number of filters required, so appropriate selection should be made according to specific conditions.
As dust accumulates on the filter media, the resistance increases. When the resistance reaches an unreasonable level, the filter must be discarded. Sometimes, excessive resistance can cause previously captured dust to become dislodged and re-enter the airflow; when this risk arises, the filter should also be replaced.
The resistance of a filter increases with higher airflow rates. By increasing the surface area of the filter media, the relative velocity of air passing through the filter can be reduced, thereby decreasing the resistance.
