Industrial Nonwoven water proof Polyester Filter Fabric Filter Bag

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Place of Origin: Shandong, China Brand Name: AOBO treatment: water, oil- proof treatment
Technics: Nonwoven Needle Punched Application:: Cement Usage: Dust Filter

Product Description:

Industrial Nonwoven water proof Polyester Filter Fabric Filter Bag



polyester   fiber

Weight (g/   m2)


Thickness   (mm)


Air   permeability (L/m2/s)


Tensile   strength
  (N/5 500px)





Tensile   Elongation(%)

<20< span="">

<30< span="">

<45< span="">

<30< span="">

Broken   strength


Continuous   working temperature(°C/°F)


Short   time Working temperature(°C/°F)








The   stability of water solution


Finishing   treatment

Singeing,   calendaring, plain, Heat Set

Top   load/ entry(walk-in plenum)

Snap   Band

Bottom   load/ entry(common in bin vents)

Disk   With Wear Strip

Heat Setting

Basically all needle felts at Shandong Aobo are heat-set. 
The residual shrinkage is reduced to a minimum by means of an optimum combination of the decisive quality factors , such as temperature, dwell time and cooling phase.

The controlled process management during the cooling phase ensures that the filter bags will have excellent form stability even under most difficult conditions.

Quality-determining parameters

  • Temperature

  • Reaction time

  • Cooling time


Thermal surface treatment

The surface of any needle felt influences the structure of the filter cake, its cleanability as well as pressure drop and the emission.

-          Singed

Three different kinds of treatment are possible: 

  • smooth for adhesive and moist dust

  • medium for universal treatments

  • rough low agglomeration or fine dust

-          Calendering

Through calendering a more compact fiber structure is achieved. This allows a more surface-active separation of dust with lower emission.


Protective Impregnation

-          hydrophobic, oleophobic

This treatment makes it more difficult for moisture to penetrate into the needle felt. Thus the risk of excessive dust deposits and caking is reduced.

-          Protection against acids and hydrolysis

Special impregnation based on TEFLON®. This treatment coats the fiber surface, thus providing it with the anti-adhesive character of a PTFE finish.

An oil- and water-repelling effect is produced, and the fibers are effectively protected against acid and hydrolysis attack.

-          Active finish, hydrophobic

Special water-repellent treatment providing a high cleaning and separation efficiency.


Through the filter-active coating dust is already separated on the surface. In addition the anti-adhesive surface reduces the adhesive forces between the filter medium and dust cake.


  • Optimised cleaning

  • Increased service life

  • High separation efficiency

  • PTFE-Coating, hydrophobic and oleophobic fibers, protection against acids and hydrolysis

  • Primary finish membrane, microporous foam coating, high separation efficiency, easy dust release, hydrophobic and oleophobic

Industrial Nonwoven water proof Polyester Filter Fabric Filter Bag

Industrial Nonwoven water proof Polyester Filter Fabric Filter Bag

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Industrial Nonwoven water proof Polyester Filter Fabric Filter Bag

Company Information

Industrial Nonwoven water proof Polyester Filter Fabric Filter Bag

Industrial Nonwoven water proof Polyester Filter Fabric Filter Bag

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Q:What is the reason for the strong drop in the broken filter bag of the cement mill dust filter bag
Jam. The main reasons for the failure of bag filter bag are: The oil is in a jam. Oil mist blockage mainly boiler start-up and low load operation for oil fuel, not the filter bag protection or protection does not reach the designated position, this will lead to the residual resistance increase of filter bag, even the powerful soot cleaning is difficult to solve this problem. Dust jam. In the process of filter bag dust collector of fine dust can enter into layers of filter bag, but when the ash removal is not possible to these all back into the inside of the filter bag dust filter bag outside, so after years of running the residual resistance of filter bag will continue to increase, in addition low boiler load for a long time when the filter is not clear ash can also lead to the emergence of the problem.
Q:What do you do when the washing machine is connected to a filter bag
Remove the filter bags, remove the wheels and use the thick wire channel
Q:What kind of bag is used in the food industry
Liquid filtering in the food industry is usually filtered through a nylon filter bag. The filtration of juice, drink and milk usually USES a single-layer filter bag of PP or PE, which can be used to filter the site and is relatively economical. Higher filtering requires absolute precision and 99.9% of special high-end filter bags depending on the situation.
Q:What is the quality inspection of the filter bag?
The advantages and disadvantages of the filter bag are related to various factors, but mainly depend on the filter material. Dust filter bag filter material is synthetic, natural fiber or glass fiber woven cloth or blanket, according to the design of the filter need to sew cloth or blanket cylinder or flat shape filter bag, according to the nature of flue gas, choose the suitable for the application premise of filter material, usually, in the flue gas temperature is below 120 ℃, filter material with acid resistance and durability of the case, often selects the polyester wool and polyester fiber needled felt, in the treatment of high temperature flue gas (< 250 ℃), the main use graphitization glass wool cloth, in some special cases, choosing carbon fiber filter material, etc.
Q:How is the filter material processed by the filter bag?
The second is heat finalization to ensure the stability of the chemical fiber filter, to maintain the reliable work of the dust collector, and to deal with the heat finalization of the filter material. It is also that hot melt pressure processing can increase the density of the needle felt, make the surface pore smaller, the fuzz is hot, smooth and smooth
Q:What are the features and methods of using filter bags?
Filter closure filter: the filter bag and the supporting filter are used simultaneously, using the system fluid pressure to squeeze the liquid through the filter bag to achieve the purpose of filtration. It has the advantages of fast velocity, large processing capacity and long life of the filter bag, especially in the case of heavy traffic.
Q:How do garbage bags in washing machines have no garbage
That's because when you wash your clothes the water level is too low, the water can't come up, so you can't filter the water, you can adjust the water level
Q:How do you pack the filter bags in the washing machine
Can observe filter plate have an arrow above, according to the location of arrows, have hands press card, can win filter, fasten can directly when installation;
Q:Which is the liquid filter bag?
Liquid filter bag quality is good, pay attention to is to see the efficiency of the filter cloth, pore size distribution, density, porosity, fracture strength, thickness, weight, etc. A series of technical indicators.
Q:How clean is the bag filter bag
According to the mechanism of liquid filtration process, surface filtration and deep filtration are classified.

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