Double layer pp filter sock are made by two pp filter felt to get more higher efficiency and longer time life.
Contructure way: Fully welded liquid filter bags or sewing thread way

There are items as following:
POXLfilter bag pp long life filer bag with double layer felt
PEXL filter bag Polyester long life filter bag with double layer felt

Feature:
Fully-welded construction for high efficiency and bypass-free filtration
• Fully-welded construction with Doctop filter bag seal ring provides 100% bypass-free filtration
• The pressure-activated Doctop filter seal ring provides a flexible, chemically resistant seal which adapts to any bag filter housing
• Material is free from silicone and crater-forming substances and FDA certification
• Special heat set and polish surface treatment significantly reduces fiber release and keep certain micro rate
• Stable and flexible welded seams that adapt to the restrainer basket
• The handles in the ring make replacing the filter bag quickly and easily
• Save labor cost for changing the single filter bag so shortly.
• doctop strongly recommends the use of an insertion tool that facilitates the insertion of the filter bag into the bag filter housing and ensures the correct alignment of the filter bag inside the restrainer basket

How filter bag works in the bag filter housing
Inside the bag filtration system,the filter bag is supported by an inside filter basket.The incoming fluid is to flow out after filtered by the bag filters ,thus the impurity is intercepted in the filter bag.You can continue to use the filter system after changing the filter bag.It is a trend for the bag filter to replace partly the cartridge filter.The small filter bag can filter large amount of liquid.

Key doctopfilter Applications
• Paints and varnishes
• Inks
• Chemicals
• Process water