The dust holding capacity is also called the dust load, which refers to the amount of dust accumulated on the filter material per unit area when a given resistance value is reached. The dust holding capacity of the dust bag affects the resistance and cleaning cycle of the filter material. In order to avoid frequent cleaning and prolong the life of the filter bag, it is generally required that the filter material has a larger dust holding capacity. The dust holding capacity is related to the porosity and permeability of the filter material, and the felt filter material has a larger dust holding capacity than the fabric filter material.
