1. Lvyuan Filter-Industrial Water Filter Cartridge & Housing Manufacturer Since 2009.


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How are melt-blown filters made?

How are melt-blown filters made?


At LVYUAN, we manufacture melt-blown filters using a specialized process. Firstly, we start with polymer resins, typically polypropylene, which are melted 

and extruded through a spinneret to form fine fibers. These fibers are then blown by hot air onto a rotating drum or conveyor belt, where they intertwine 

and form a dense web-like structure.

Next, the newly formed web passes through a series of rollers to compress and bond the fibers together, creating a uniform and porous filter media. 

The thickness of the filter media can be adjusted by varying the speed of the conveyor belt or the airflow rate during the blowing process.

After forming the filter media, it undergoes a series of post-processing steps such as heat treatment or surface treatments to enhance its mechanical

properties, filtration efficiency, and durability.

Finally, the melt-blown filter media is cut into the desired shape and size, then assembled into filter cartridges or other filtration products according to 

specific requirements.The end result is a high-performance filter capable of capturing fine particles and contaminants from various liquids and gases.

What is the process of Meltblown manufacturing?

  • Meltblown manufacturing is a crucial process in the production of nonwoven fabrics, particularly for applications like filtration, medical masks, and wipes. Here's a simplified overview of the process:

  • Polymer Selection: The process begins with selecting a suitable polymer material, often polypropylene (PP) or other thermoplastic polymers, which will form the basis of the meltblown fabric.

  • Melt Extrusion: The selected polymer resin is fed into an extruder, where it is melted under high temperature and pressure to form a viscous liquid.

  • Filament Formation: The molten polymer is then forced through a spinneret, which is a specialized nozzle with numerous tiny holes. As the polymer emerges from these holes, it is rapidly stretched by hot air streams or high-velocity air jets. This stretching process elongates the polymer filaments and reduces their diameter to the micron or submicron level.

  • Fiber Cooling and Solidification: After exiting the spinneret, the stretched polymer filaments are rapidly cooled and solidified by chilled air streams or ambient air. This step is crucial to prevent the filaments from sticking together and ensure their individual integrity.

  • Web Formation: The solidified polymer filaments are collected on a moving conveyor belt or drum, where they form a randomly oriented web or mat of fine fibers. The arrangement of these fibers creates the porous structure characteristic of meltblown fabrics, with a high surface area and fine pore size distribution.

  • Bonding (Optional): In some cases, additional bonding processes such as thermal bonding, ultrasonic bonding, or chemical bonding may be employed to enhance the fabric's strength and integrity.

  • Finishing: The meltblown fabric may undergo additional finishing processes, such as calendering or surface treatments, to improve its properties or meet specific application requirements.


Get a melt-blown filters solution

Experience the superior quality and performance of our meltblown fabrics at Lvyuan. Whether for filtration, medical masks, or wipes, our advanced manufacturing process ensures reliability and efficiency. Contact us today to discuss your specific requirements and discover how our meltblown solutions can elevate your products.

+86 15975359293
+86 020-34460508
+86 020-34425655

Our company always insists on product quality is life, our aim is to provide more professional and attentive services for our global customers.

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