Envelope Filter Bags

Product Details


We can make the envelope filter bag with different material like polyester, aramid, pps and othere, but the  most popular material is the polyester felt as following:

polyester filter bag are made of 100% filament polyester fiber,after needle punched, singed heat set calender for the raw polyester filter felt material, then polyester filter felt can be sewn into polyester filter bags. 


1.Operation temperature 150 Deg c, 

2.the max surge is 150 deg c. 

3.good anti-acid, good  anti-alkali ,good hydrolysis stability

4.Mean Air Permeability: 10-15 m3/m2/min@12.7mmH2O

5.It is the cheapest filter media in the bag filter filtration field. Polyester bag filter is the most popular items in the bag house system.                    

Available Finish: singed,calendar,heat set PTFE membrane,W/O,anti-static treatment.


Polyester bag filters Breaking Elongation is less than 20% for MD and 40% for CMD,low dry shrinkage, can work well in the 130 deg C. the material is cheaper than other material, so widely used in a lot of bag house system.

Technical data


Polyester filter bag widely used in mine, limestone, cement, iron and steel industries,alumina delivery, electrolytic aluminum, non-ferrous metal production, wood processing, food processing and pharmacy industry.

Engaged in creating a clean and fresh environment for people, Sffiltech is specialized in envelope filter bags. As one of the best manufacturers and suppliers, we can assure you the best quality and stable performance of our custom products. Please rest assured to buy.