The smoothness of the surface of polyester needle punched felt bags has a significant impact on the dynamic running resistance of the bags. The initial resistance of a cloth bag depends on its breathability, and the resistance during operation is many times greater than the initial resistance. The running resistance depends on the smoothness of the filter material surface, the cleaning effect, etc. Generally, it is desirable for the bag to have a higher air permeability and lower resistance while ensuring the same filtration efficiency, as this can save a lot of energy. In dust collectors that use air flow back blowing for dust cleaning, when using air flow of the same pressure and air volume for dust cleaning, using fabric with high air permeability as the filter bag has better dust cleaning effect than using fabric with low air permeability.

How to improve the breathability and surface smoothness of the bag, reduce dust adhesion, and lower operating resistance while ensuring high filtration accuracy of the filter material is the first research topic that filter material manufacturers should study. The surface resin treated smooth finishing needle punched filter felt bag developed by our factory has a permeability that is more than 50% higher than that of ordinary calendered finishing filter materials, and the surface smoothness is smoother and more even than that of calendered finishing.

Weight: ≥ 500g/m2

Thickness: 1.8mm

Breathability:> 8-12m3/m2.min

Longitudinal tensile force:> 900N/5*20cm

Lateral tensile force:> 1500 N/5*20cm

Longitudinal elongation:< 25%

Longitudinal elongation:< 45%

Operating temperature: 150 ℃

Post processing: shaping, calendering, waterproofing