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Nonwoven PP Felt Polypropylene Filter Bag
Nonwoven PP Felt Polypropylene Filter Bag
Nonwoven PP Felt Polypropylene Filter Bag

Nonwoven PP Felt Polypropylene Filter Bag

Basic commercial terms of PP filter bag:

Place of OriginShanghai, China
CertificationISO, FDA
Product ItemNonwoven PP Felt Polypropylene Filter Bag
Minimum Order Quantity10pcs  (1pcs free sample)
PriceContact us to get an exact quotation
Packaging DetailsThe inner packing is in plastic bags The outer packing is in carton Large volume can also support custom packaging
Delivery Time7-30days after deposit. According to the specific order quantity.                                        1-7days for sample
Port of shipmentShanghai, Ningbo, Qingdao, Lianyungang, Guangzhou, Shenzhen or Others
Payment Terms30% Deposit, balance TT on copy B/L. Other payment methods can be negotiated according to the order requirements
Supply Ability:100000pcs/month
OEM/ODMYes, we can support customized, like size, shape, material
After-sales Services1 year warranty after we both sign the plant investigation usually for this one

What is a PP filter bag?

The filter bag is made from PP needle punched felt produced by needle punching method. PP fibers are produced using different production equipment and manufacturing procedures based on the characteristics of working conditions and usage requirements. After a special hydrophobic treatment, PP needle felt with high filtration performance and efficiency is obtained through singeing, heat setting, and rolling. Afterwards, it is sewed with PP needle felt to form a traditional PP filter bag.

What are the special production processes for PP filter bags?

The PP filter bag is made from PP needle felt. The most traditional PP needle felt on the market only requires acupuncture, singeing, heat setting, and rolling before use. However, in complex working conditions with special and high filtration requirements. Special production procedures are used to improve the performance and efficiency of filter bags.

Filter bags can be treated with singeing, calendaring, water and oil repellent coating, PTFE impregnation and lamination as per the specifications and demand of our customers.

Why Should You Choose SFFILTECH PP Filter Bag?

1. Reliable product quality

SFFILTECH has 3 production software and 22 advanced filter bag patents to ensure the efficiency and quality of filter bags

SFFILTECH strictly follows ISO standard production procedure and the regulations of automated production.

The production factory has a set of quality inspection procedures and a team of assisting personnel for pre-production, during production, and post production.

If required, a third-party laboratory quality inspection reports for each batch of products can be provided.

2. Convenient and stable shipment:

SFFILTECH has over 20 brand new filter bag production machines and equipment making the company capable of consistent production.

Stable and continuous supply and production. Large scale of storage of raw materials and accessories.

Independent warehouse provides a large amount of storage space for shipment stock.

Our company uses highly efficient transportation and courier services.

SFFILTECH has over 10 years of experience as a manufacturer.

3. Safe and reliable payment transactions:

Since its establishment, SFFILTECH has been cooperating with the most reliable banks in China, ensuring the safe funds transfer.

SFFILTECH supports multiple payment methods and can collaborate with third-party banks and enterprises to ensure the security of customer payment.

“Integrity has always been one of the most important concern of SFFILTECH”

4. Excellent pre-sales and after-sales service:

SFFILTECH has multiple experienced sales personnel providing 24-hour service.

SFFILTECH can provide instant online after-sales support as well as overseas after-sales services.

SFFILTECH has multiple agents worldwide and branches in some regions that can provide services in person.

How to check what kinds of filter bag is suitable for the bag house?

When old filter bag requires replacement:

Once you remove the filter bag from the filter housing, you can just take some measurements and pictures to send them to us. We would be able know your filter bag specifications using this method.

If you are able send us the samples, we can analyse the sample bag material and treatment.

We can make a sample for you to test its fitment with your bag house within a few days.

When you want to install a new filtration system and need some advice:

1. We will send you a configuration to fill it according to your specifications and conditions like temperature, chemical content and others. After you send it back to us .We will inform you about what kind filter bag is suitable for you.

2. Our engineers can arrange online meeting with your engineer or provide you with the configuration based on your demand.

What are the advantages of PP filter bags?

The biggest advantage of PP filter bags is that they are non-toxic and odorless. Due to this they reach standards of food grade. Which is very conducive to the processing and production of powdered or liquid food as well as their storage.

Advantages of PP filter bags:

1. Melting point is 167 ℃, with good heat resistance.

2. Having good electrical and high-frequency insulation, not affected by humidity.

3. Good corrosion resistance. Common solvents such as acids and alkali have no effect on it .Hereby making it the best choice filter to be used in the food industry

4. Nontoxic, odorless and has fast cooling speed.


What are the chemical properties of PP filter bags?

ItemFilter TypeContinuous
Resistance to
Resistance to
Resistance to AlkalisResistance to OxidationPH Value
AcrylicPolyacrylnitrile homopolymer125°C140°Cgoodgoodmoderategood3-11

What are the physical and mechanical properties of PP filter bags?

ConstructionNeedle punch felt
Fiber Composition100% PP
Scrim Composition100%PP
Felt Area Weight450g/m2
Mean Air Permeability140L/dm2.min
Breaking Strength-MD(warp)≥1200 N/5cm
Breaking Strength-CMD(weft)≥1200 N/5cm
Breaking Elongation(200 N/5cm)-MD(warp)<5%
Breaking Elongation( 200N/5cm)-CMD(weft)<5%
Dry Shrinkage   (150℃,90min)1%
Blasting strength>300 N/cm2
Operating Temperatures<90℃
Recommended Maximum Surge100℃
FinishHeat set, singed, calendared W/O Repellent

What are the conventional size and weight parameters of PP filter bags?

Diameter (mm)Length (mm)Weight (g/㎡)
120、130、133、155、180、200、250、292、3001000、1500、2000、2400、25000、2480、2800、3000、3200、3600、4000、4400、5000、6000、8000300, 350, 400, 450, 500, 550, 600
Most commonly used dimensions133mm*1500mm、133mm*2000mm、133mm*2500mm
Most commonly used weight400g, 450g, 500g
We can customize diameter, length, and weight for you

What industries are PP filter bags used in?

In terms of liquid filtration, polypropylene needle felt filter bags are usually used with plate frame filter press, vacuum suction housing, bag housing, centrifugal filtration and other liquid-solid separation equipment. Due to its good dimensional stability, high strength, long service life and other characteristics it has a small resistance, easy cleaning and other unique advantages.

It is used in mineral processing, coal preparation, petroleum, chemical and other industries. Where it is necessary to filter small particles and ensure high filtration. Polypropylene needle punched felt has far superior performance than traditional woven filter materials.

Polypropylene needle punched filter felt is mainly used in the liquid-solid separation fields of metallurgy, mining, petroleum, chemical industry, chemical fiber, pharmaceutical, food and other industries. .

Specific applications of dust filter bags in various working conditions:

Where to install filter bag installed in each industrial plant?

Scope of application for filter bag Cement plant:

Crushing, grinding, coal grinding, material transportation, dust removal on the top of the warehouse, raw metal grinding, cement grinding, packaging.

Metallurgical plants:

Electric furnaces, blast furnaces, desulfurization furnaces, induction furnaces, casting, sandblasting, barrel furnaces.

Power plant:

Material conveyor, smoke (powder) dust treatment, fly ash storage.

Aluminum plant:

Fluidized bed dry cleaning tower, venturi jet dry cleaning tower, carbon dust, anode crushing, electrolytic aluminum production dust.

Food plant:

Fluidized bed dry cleaning tower, venturi jet dry cleaning tower, self-baking dry cleaning tower, carbon dust.

Food/pharmaceutical plant:

Additives, drying section, flour/grain processing, sugar and pesticide tablets, packaging.

Chemical plants:

Plastic fibers, resins, tires/rubber, coking, bleaching powder, packaging.

Each plant will have different filter bags. For more detail, we have the configuration file for you to select the right filter bag. Or you can visit us directly, we will provide you our assistance and guidance to you.


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