The binding material as used in road engineering by asphalt factory shall be used together with macadam and other mineral materials to be made into bitulith, bituminous mortar and other asphalt mixture. These materials shall be applied to road pavement, mill floor and other projects. The tag fog as generated from the heated bitulith enters the bag-type dust collector. In this condition, selection of the material of bag filter is of great importance.
The cloth bag, as the primary component of the bag-type dust collector of asphalt factory, will be operating in high temperatures for a long time. Besides, the dust of asphalt factory has a high temperature. Considering this, the material as used for bag must resist high temperatures.