As the most widely used filter element in domestic and industrial water treatment projects, PP melt blown filter cartridge plays an important role in filtration. In this article, we want to introduce the PP melt blown filter for you from all aspects. If you are interested in it, you can follow our steps.

PP melt blown filter

What is a PP melt blown filter cartridge?

PP melt blown filter cartridge is constructed by 100% pure polypropylene fiber, providing wide chemical compatibility. With innovative and advanced graded pore structure, it can provide effective particle retention.

Brother Filtration utilizes 3 layered construction for progressive contaminant removal efficiency. Our filter media contains no binder, glue, or any other additives, just pure PP structure.

With years of experience, we are able to custom special PP melt blown cartridge filters with varied specifications like groove, orange peel, and hairy surface finish or equipped with different SOE/DOE end caps for you.

Characteristics of precision filter

For Melt Blown Filter, we usually offer the removing ratings of 1, 3, 5, 10, 20, 30, 50, and 100um. The outer diameter is 63mm or 113mm. The inner diameter is 28mm or 30mm. The length usually is from 10 inch to 70 inch.

The O-ring is made up of silicon, EPDM, Viton, and Nitrile. If the liquid has characteristics of strong acid and alkali, the O-ring should be made with Viton, which could avoid the acid and alkali to get a chemical reaction. If the liquid is oil type, the O-ring should use Nitrile.

melt blown filter cartridge

For Melt Blown Filter, there are two types for the ends, one is the double open end(DOE), and the another is the single open end. For the second one, both ends could be made up of 4 types, which are 222/flat, 226/flat, 222/fin, and 226/fin.

How is the melt blown made?

The main filter element in melt blown filter cartridge is as its name, melt blown. Melt blown is made by extrusion technology. Heating the machine and putting in the raw materials, the filter element is produced according to the mold. Based on the size you want, the machine cuts the filter element.

The qualified production environment and high-quality products

The benefits of melt blown filter cartridge

The benefits of melt blown filter cartridge
  • Center core for strength.
  • High flow rates.
  • Low-pressure drop.
  • High dirt-holding-capacity.
  • Fixed-pore-structure retains trapped debris.
  • Broad chemical compatibility.
  • Controlled process parameters- consistent product.

The main applications of PP Melt Blown Filters

The mainly applications of PP Melt Blown Filters
  • General water treatment.
  • Food and beverage.
  • Chemicals.
  • Drinking water.
  • Sea water desalination.
  • Prefiltration for RO/DI

The problem with melt blown filter cartridge

We have many clients who complained about their former melt-blown filter cartridges and former supplier. Because the instability of the melt blown filter cartridge leads to many filtration problems and affects the filtration performance.

That is caused by the production machine, when the manufacturer doesn’t pay attention to the regular clean for the machine, the extrusion machine can be clogged, resulting in the instability of the filter cartridge.

Why some manufacturers are not willing to shut down the machines and have regular maintenance and clean. It is obvious that they want to save costs.

Above are the melt blown we manufactured

Brother Filtration deeply knows the importance of quality, controls every detail of the production, providing only high-quality products for our customers.

Our melt-blown filter cartridge has been certificated by a professional organization. If you want to know more about quality control and how Brother Filtration prevents all these problems, you can read another blog from us, which tells you the secrets of manufacturing a melt-blown cartridge filter.


PP melt blown filter cartridge is commonly used in many different industries and applications. It has wide chemical compatibility and is suitable for most operating conditions.

Due to the overwhelming supplication from diverse manufacturers, many unqualified melt-blown filter cartridges are also sold in the market. It is essential for customers to choose a reliable manufacturer and pick up high-quality melt-blown filter cartridges.

Brother Filtration has years of filtration experience and designs and manufactures all kinds of filter products. We are not only dedicated to providing high-quality filter products for our clients but also better filtration solutions.

If you are interested in our melt-blown filter cartridge, or you have a problem with filtration, please feel free to contact us.

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