Polypropylene Filter Bags is an excellent industrial filtration product, which is mainly used for liquid filtration. It is made of polypropylene fiber as the main material, with the advantages of chemical corrosion resistance, high temperature resistance, high strength, etc., and is widely used in many fields, including chemical, pharmaceutical, food, beverage, coating, ink and other industries.
- Material: Polypropylene needle felt.
- Filtration Accuracy: Micron.
- Post-processing: Calendering, Heat setting, Singing.
- Size: Customized.
- Sealing Method: Needle sealing, Hot melt sealing.
- Bag Mouth Sealing Ring Type: stainless steel, plastic.
- Bag Bottom Type: Round, V-shaped, Flat.
- Application: Liquid filtration.
Description
Working Principle of Polypropylene Filter Bags
Polypropylene (PP) is a non-toxic, odorless, milky white, highly crystalline polymer with a density of 0.90-0.91 g/cm3, making it one of the lightest plastics currently available. It is particularly stable to water, with a water absorption rate of only 0.01%, and does not react with most chemicals. The polypropylene fiber is made into loose tissue by needle punching to increase the space for impurity holding. Its internal honeycomb structure can effectively remove solid and soft particles. Larger particle impurities are trapped on the fiber surface, while fine particles are captured in the filter material layer.
In summary, the advantages of polypropylene filter bags are mainly reflected in:
- Chemical Resistance: suitable for filtering a variety of chemical media.
- Thermal Stability: has high heat resistance and can usually be used in the temperature range of 80~100℃.
- High Strength: polypropylene fiber has high mechanical strength and can withstand high operating pressure and flow rate.
Specifications
| Brand Name | Filmedia |
| Material | Non-woven Polypropylene Needle Felt |
| Maximum operating temperature | 80-100℃ |
| Mesh Count (per inch) | 26000-60 |
| Filtartion Area (square meters) | 0.75 |
| Filtration Accurancy (μm) | 0.5-200 |
Filmedia® Exclusive Features
- Gradual mesh count structure.
- Suitable for standard filter housings.
- Unique manufacturing process enables 62% more filtration area in per unit.
- 4 times life expectancy than conventional filter bag.
- Better contamination absorption.
- Highly increased filtration traffic in per unit.
- Easy disposal and replacement, minimum time consumption and cost effective.
- Latest technology and production concept in Filmedia system and filtration basket design.
- 100% three-dimension support for filter medium, eliminate the potential breaking threat. Compare to traditional filter bags, 3D-support design extremely decreases contamination retention.
Our Product Quality
- The filter bag is made of 100% pure polypropylene fiber filter cloth.
- The thickness of the bag is uniform, and the error of the bag diameter is less than 0.5mm.
- The surface is treated by burning or calendering technology, which can effectively prevent the fibers on the surface of the filter bag from being free and causing filtrate contamination.
- The stable opening rate and sufficient fiber strength make the polypropylene filter bag efficient and long-lasting, and its maximum particle retention rate is as high as 99%.
- The bag mouth sealing ring is made of SS304 stainless steel or polypropylene plastic.
- Hot-melt seamless joint technology ensures no leakage.
- Its internal structure is stable and will not be damaged due to increased pressure during use.
Post-treatment of Polypropylene Filter Bags
For PP/Polypropylene filter bags, we can treat it with different post-processing according to different working conditions. There are mainly the following post-processing treatments:
Bag Bottom Type
Sealing Method
Application of Polypropylene Filter Bags
- Chemical Industry: Filter various chemical liquids such as acids, alkalis and solvents.
- Pharmaceutical Industry: Used for filtering various solutions in the process of drug production to ensure the purity and safety of the drug solution.
- Food and Beverage Industry: Used for filtering liquids such as juice, beer, milk, etc. to remove solid impurities and ensure product quality.
- Water Treatment: Used for pre-filtration and terminal filtration in industrial and civil water treatment systems to remove suspended matter and particulate matter in water.
- Paint and Ink Industry: Used for filtering liquids such as paint and ink to prevent solid particles from affecting product quality.
Maintenance and Use
- Clean the filter regularly and ensure the pre-filter is clean.
- Check the condition of the filter bag regularly and ensure it is operating properly. When the filter bag reaches the maximum particle count or the filtration efficiency decreases, the filter bag needs to be replaced.
- Unused filter bags should be stored in a dry, cool, well-ventilated environment, away from direct sunlight and high temperatures, and away from strong acids, strong alkalis and other chemicals.
We Pay Attention to Every Processing Details
- Accurately design the size of the filter cloth required for the filter bag. The filter cloth will be larger than the actual design size to leave enough operating space.
- Choose the right filter bag accessories and check their quality.
- We draw, cut and sew the filter bags on an automatic production line. When the filter bag needs to be processed manually, we open it on the operating platform and use a certain pulling force to keep it flat.
- We maintain strict processing quality standards in accordance with design drawings and operating procedures. Our workers dress in compliance with safe construction requirements and are prohibited from smoking.
