Polyester dust collector bags are one of the key components of bag dust collectors, and the cost of replacing filter bags is the main maintenance expense for bag dust collectors. Therefore, how to choose polyester dust collector bags is crucial to the operation status and cost of the dust collector.

Polyester dust collector bags are the main filter material in bag dust collectors. They are made by using a needle-punched nonwoven process, where polyester short fibers are carded and laid on a fine fiber fabric with interlaced fibers and evenly distributed gaps, and then needle-punched into felt. This filter material has high strength, strong elasticity, stable fabric dimensions, and a large porosity, offering good air permeability, long service life, and effective dust removal. It maintains certain mechanical properties and characteristics at room temperature (below 130℃). Due to the low cost of polyester, polyester needle-punched felt dust collector bags are a cost-effective filtering medium at low temperatures.

Polyester dust collector bags, in addition to having the advantages typical of felt materials such as high porosity, good breathability, dust collection, and long service life, also boast moderate temperature resistance, instantly reaching 150°C, and moderate resistance to acids and alkalis. Moreover, they have excellent properties, making them a widely used variety among felt filter materials.

Polyester dust collector bags can be repeatedly removed and cleaned, making them more economical. Each fiber is made by twisting together many fine filaments of the same diameter, then woven into a mesh with specified warp and weft densities. During filtration, particles larger than the mesh count diameter are trapped on the surface by the filter fabric, while particles smaller than the mesh count diameter pass through the mesh into the downstream. Therefore, the wire mesh filter bags achieve surface filtration, and their smooth surface is also easy to clean.

The production process of polyester dust collector bags includes: fiber opening — carding — laying — pre-needling — main needling — felting — singeing — calendering — impregnation — PTEE (agent) drying — shaping — rolling — coiling.

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