Polyester needle punched filter felt dust bag

Polyester dust removal bag is currently one of the most commonly used dust removal bags in the bag dust removal industry. It is widely used in environments with temperatures not exceeding 120 ℃ and various working conditions. After water repellent, oil proof, and post-treatment, the use of polyester needle punched felt dust removal bags becomes more widespread.

Polyester needle punched felt dust removal bag is currently one of the most commonly used dust removal bags in the bag dust removal industry. It is widely used in environments with temperatures not exceeding 120 ℃ and various working conditions. After water repellent, oil proof, and post-treatment, the use of polyester needle punched felt dust removal bag becomes more extensive. Widely used in dust removal projects for building materials, chemical, metallurgical, thermal and electric enterprises.
The polyester needle punched filter felt dust removal bag is made of 1-2.5D polyester fine yarn, woven with high-strength and low elongation yarn to enhance the base fabric, and reinforced by needle punching and post-treatment processes. This dust removal bag not only has the characteristics of high porosity, good breathability, moderate acid resistance and alkalinity unique to ordinary felt filter cloth, but also has very good wear resistance. Therefore, it is one of the varieties used in felt filter materials. Our factory can produce weights ranging from 350g/㎡ to 800g/㎡ and thicknesses ranging from 1mm to 4mm. The post-treatment methods for polyester needle punched felt dust removal bags include calendering, singeing, heat setting, impregnation drying, coating, etc. It has the characteristics of stable size, easy dust removal, and long service life.
The surface smoothness of the polyester needle punched felt dust removal bag has a significant impact on the dynamic operating resistance of the filter material. The initial resistance of the dust removal bag is determined by the air permeability of the bag itself, and the resistance during operation is many times greater than the initial resistance. The running resistance depends on the smoothness of the surface of the dust removal bag, the cleaning effect, etc. Generally, it is desirable for dust removal bags to have a higher air permeability and lower resistance when the filtration efficiency is the same, as this can save a lot of energy. In dust collectors that use air flow back blowing for dust removal, when using air flow with the same pressure and air volume for dust removal, using fabric with high air permeability as the dust removal filter bag has better dust removal effect than using fabric with low air permeability. Therefore, in the case where the dust removal bag achieves high filtration accuracy, how to improve the breathability and surface smoothness of the dust removal bag, reduce dust adhesion, and lower operating resistance is the first research topic that dust removal bag manufacturers should study. The surface resin smoothed finishing needle punched filter felt dust removal bag developed by our factory has an air 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.

name	material	Weight g/m2	Breathability (m3/m2/S)	breaking strength		Fracture elongation		Operating temperature (℃)	Filtering wind speed (m/min)
				warp	zonal	warp	zonal
Aramid filter felt	Aromatic polyamide	500	80-100	＞1200	＞1000	＜20	＜50	204	1.0-1.2
Aramid filter felt	Aromatic polyamide conductive yarn	500	80-100	＞1200	＞1000	＜20	＜50	204	1.0-1.2
Aramid coated filter felt	Aromatic polyamide PTFE microporous membrane	500	60-80	＞1200	＞1000	＜20	＜50	204	1.0-1.2
PPS filter felt	Polyphenylene sulfide	500	80-100	＞1200	＞1000	＜30	＜30	190	1.0-1.2
PPS membrane filter felt	Polyphenylene sulfide PTFE microporous membrane	500	70-90	＞1200	＞1000	＜30	＜30	190	1.0-1.5
P84 filter felt	polyimide	500	80-100	＞1400	＞1200	＜30	＜30	240	1.0-1.2
P84 laminated filter felt	Polyimide PTFE microporous membrane	500	70-90	＞1400	＞1200	＜30	＜30	240	0.8-1.2
Acrylic filter felt	Polypropylene nitrile copolymer	500	80-100	＞1100	＞900	＜20	＜20	160	1.0-1.2
Acrylic laminated filter felt	Polypropylene nitrile PTFE microporous membrane	500	70-90	＞1100	＞900	＜20	＜20	160	0.8-1.2
Polyester filter felt	polyester	500	80-100	＞1100	＞900	＜35	＜55	130	1.0-1.2
Polyester film filter felt	Polyester PTFE microporous membrane	500	70-90	＞1100	＞900	＜35	＜55	130	0.8-1.2
Polyester filter felt	Polyester conductive yarn	500	80-100	＞1100	＞900	＜35	＜55	130	1.0-1.2
Polyester film filter felt	Polyester, conductive yarn PTFE microporous membrane	500	70-90	＞1100	＞900	＜35	＜55	130	0.8-1.2
Polypropylene filter felt	polypropylene fiber	500	80-100	＞1100	＞900	＜35	＜35	90	1.0-1.2
Fiberglass needle punched felt	fiberglass	850	80-100	＞1500	＞1500	＜10	＜10	240	0.8-1.2
Composite fiberglass needle punched felt	Fiberglass _ Fiber	850	80-100	＞1500	＞1500	＜10	＜10	240	0.8-1.