Dust mainly comes from grains, flour, sugar, starch, oil crops, and debris, fibers, etc. during the food processing. Some dusts (such as sugar and starch) have strong hygroscopicity and are prone to caking in a humid environment. In a high-temperature environment, there is an explosion risk. It is required that the filter bags have anti-static properties. At the same time, the filter bags are required to be wear-resistant to prevent debris from mixing into the food.