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Non-woven Pocket Filter Definition And Essential Features

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Non-woven Pocket Filter

A non-woven pocket filter has layers of nonwoven material. These layers catch particles from the air. This filter is special because it uses advanced nonwoven fibers. It also has a pocket design that gives more surface area. The nonwoven structure helps the filter work well. It lets air move through easily with low pressure drop. Users get longer filter life and need less maintenance.

  • Nonwoven materials help the filter hold more dust. They also catch both small and large particles.

  • These filters can work at many efficiency levels. This makes them good for many places.

  • Their design saves energy and helps keep people healthy by lowering pollutants.

Knowing the features of a non-woven pocket filter helps users pick the best filter for good results.

Key Takeaways

  • Non-woven pocket filters have special fibers and pockets. They trap big and small particles. This helps keep the air clean and safe.

  • These filters let air move through them easily. They can hold more dust than some other filters. This saves energy and makes them last longer. You do not need to clean or change them as often.

  • They are strong and can bend without breaking. They work in many places like homes, factories, hospitals, and cars. They help make the air better to breathe.

  • Non-woven filters come in many types. They can be made to fit special needs. This makes them good for many jobs and cleanrooms.

  • Picking the right filter is important. You should think about cost, how well it filters, how much dust it can hold, and if it can handle heat. This keeps people and machines safe.

Non-woven Pocket Filter Overview

Non-woven Pocket Filter

Definition

A non-woven pocket filter has layers of nonwoven fibers. These fibers trap dust and other things in the air. The fibers are put together in a random way. They are pressed and stuck to a backing. This makes a mat that catches dust, pollen, and other bad stuff. The pockets in the filter look like wedges with wide openings. This shape gives more space for air to pass through. It also helps the filter work better. Nonwoven pocket filters are good for places that need strong cleaning. People can change them to fit special needs. These filters do not use woven or knitted fabrics. They use fibers that stick together by friction, sticking, or glue.

Note: The world market for nonwoven filter media was about $7.4 billion in 2022. Experts think it will grow to $13.7 billion by 2032. This is because more people need filters for healthcare, travel, and water cleaning.

Key Characteristics

Non-woven pocket filters have many features that make them useful:

  • The nonwoven structure uses fibers like glass, synthetic, cellulosic, wool, metal, ceramic, and special polymers. These fibers make the filter strong and bendy.

  • The filter can be made in different ways. It can be all the same, mixed, layered, or have a gradient. This lets the filter work at different levels.

  • The size and shape of the fibers matter. Small fibers and special shapes help catch tiny particles.

  • Nonwoven filters let air move through easily. They are light and can be made thick or thin. These things help the filter last longer and work well.

  • The wedge-shaped pockets let more air flow through. They also help the filter hold more dust.

  • Nonwoven pocket filters can handle chemicals and heat. They work well in tough places.

  • Experts can make these filters for special jobs. This means they can be used in many ways.

  • The filters can be thrown away or used again. They work in both single-use and permanent systems.

  • New technology, like nanofibers, helps the filter catch even smaller particles.

  • Nonwoven filters help keep air and water clean. They also help save money on repairs and running costs.

  • Rules about the environment make people use filters that can break down or be recycled.

Here is a table that compares nonwoven and woven filter press belts:

Feature Woven Filter Press Belts Non-Woven Filter Press Belts
Initial Cost Higher initial cost due to manufacturing Lower initial cost, more cost-effective upfront
Durability High durability, longer lifespan Lower durability, requires more frequent replacement
Maintenance Lower maintenance needs Higher maintenance due to wear and tear
Operational Cost Potentially lower over lifespan due to longevity Potentially higher over lifespan due to frequent replacements and maintenance

Nonwoven pocket filters cost less at first. But they may need to be changed and fixed more often than woven ones. Their light and bendy design makes them easy to put in and take out.

Nonwoven pocket filters are being used more and more. Car, electronics, and building companies use them to catch dust and clean air. New ways to make them, like airlaid and spunbond, make the filters better and cheaper.

Nonwoven pocket filters are very important in today’s filtration systems. Their special design, high efficiency, and ability to change make them great for clean air and safe places.

Nonwoven Construction

Non-woven Pocket Filter

Materials Used

Nonwoven pocket filters use many types of fibers. Polypropylene and polyester are the most used. Polypropylene is tough and filters well. Polyester gives strength and keeps its shape. Makers join these fibers by needle-punching or heat bonding. Needle-punched fabrics let air and water pass but trap small bits. This way, the filter is flexible and lets things flow through. Heat-bonded fabrics stay stable and stop fibers from moving. This helps the filter work the same every time.

Spunbond polypropylene is made by melting and stretching long threads. This makes a strong and even filter. The filter stays strong and keeps its shape. These materials are good for filtering and draining. Some filters use special fibers like glass or ceramic. These can handle heat and chemicals better. The fiber type changes how well the filter works and what it can catch.

Tip: Polypropylene is often used because it does not break down with chemicals and stays strong under pressure.

Manufacturing Process

Making nonwoven pocket filters has a few main steps:

  1. Web Formation: Makers put fibers together in a web. They use drylaid, wetlaid, or melt and stretch the fibers.

  2. Web Bonding: The web gets stronger by bonding. Chemical bonding glues fibers together. Mechanical bonding tangles fibers with needles. Thermal bonding melts fibers to stick them.

  3. Finishing Treatments: The last step changes the filter’s feel or how it works. Chemicals can make it softer or more absorbent. Other finishes change the texture.

Bonding Method Process Description Impact on Filter Media Properties Filtration Performance
Chemical Glues fibers with adhesives or binders Stiff, not very bendy, hard to recycle Strong, like paper, works okay
Mechanical Tangles fibers with water jets or needles Soft, bendy, soaks up liquids Good for soft, medium filters
Thermal Melts fibers with heat (spunbond, meltblown) Strong, has holes, lasts long Great, best for meltblown layers

Nonwoven filters have some big pluses over woven ones. The fibers are mixed up, so the filter feels soft and bendy. This lets air and water move through easily. Nonwoven filters also have more space to catch dust and dirt. This makes them better at cleaning the air or water. These features make nonwoven pocket filters great for jobs that need soft, open, and strong filters.

Nonwoven Fabric Filter Features

Filtration Efficiency

Nonwoven fabric filters work well in many places. They often have MERV ratings from 8 to 11. This means they can remove lots of dust and small bits from the air. The fibers in nonwoven filter cloth are mixed up. This helps them catch both big and tiny particles. This design holds more particles than many old-style filters. Nonwoven filters use thick synthetic media that stays firm in the air. This helps stop water and bacteria, so the filter lasts longer and works better.

Nonwoven filters usually catch 65% to 95% of particles. This range lets people pick the right filter for their needs. These filters can grab fine particles and aerosols. This makes them good for places that need clean air. The thick synthetic media keeps air moving while still filtering well. Nonwoven filters have smaller holes than regular filters. They are better at catching fine dust. This means they filter better and last longer.

Note: Nonwoven filtration media usually works better than regular media. The mixed-up fibers are great for catching tiny particles. This helps keep indoor air cleaner.

Airflow and Pressure Drop

Nonwoven pocket filters let air pass through easily. The open fiber design keeps airflow high and pressure drop low. This means the filter does not block the system or make fans work harder. Good airflow saves energy and keeps HVAC systems working well. Nonwoven filters use a thick design, so dust spreads out inside the filter. This helps the filter last longer and keeps pressure drop steady.

A table below shows how nonwoven filters compare to other types for airflow and pressure drop:

Filter Type Airflow Rate Pressure Drop Dust Holding Capacity
Nonwoven Pocket High Low High
Woven Filter Medium Medium Medium
Cartridge Filter Medium-High Low Medium

Nonwoven filters keep air moving well, even as they fill with dust. This helps keep indoor air good and means you do not need to change filters often.

Durability

Nonwoven fabric filters are made to last a long time. Synthetic fibers like polypropylene and polyester make them strong and bendy. These filters do not break down or get ruined by water. In big buildings, nonwoven pocket filters need care every 3 to 6 months. Some special filters can last up to 18-24 months, depending on how much they are used. Checking them often helps them work their best.

Tests show multilayer nonwoven filters hold more dust and last longer than single-layer ones. For example, multilayer cellulose-based nonwoven pocket filters held 34.7% more dust and lasted 37.0% longer. The layered fiber design helps them keep filtering well, even as they fill with dust. This means you change filters less and save money on care.

Tip: Nonwoven pocket filters can last up to six years in dusty places like cement plants or steel mills. This long life saves money and cuts down on waste.

Pore Size and Particle Capture

The pore size in nonwoven fabric filters is very important. Nonwoven filters have small, mixed-up pores that trap both big and tiny particles. This design helps catch dust, pollen, and even small aerosols from the air. The thick filter lets particles move inside, not just stay on top. This stops clogging and keeps air moving.

Nonwoven pocket filters work well in places with lots of dust and rough particles. Factories like woodworking, cement, and steel use these filters because they handle tough jobs. New synthetic nonwovens can hold up to 300% more dust. This means the filter can collect more dust before you need to change it.

  • Nonwoven pocket filters:

    • Work well with lots of dust and rough particles

    • Stop clogging by letting dust move inside the filter

    • Need to be changed less often, so there is less waste

    • Can be made safer with special layers or treatments

Nonwoven pocket filters meet important industry rules. They follow EN779 (old) and ISO 16890 (new). ISO 16890 sorts filters by how well they remove different particle sizes. This makes sure nonwoven filters work well in many places, like offices and factories.

Note: Nonwoven filters clean air very well and meet strict rules. They are great at catching tiny particles, so they are a top pick for tough jobs.


Non-woven Pocket Filter

Non-woven Pocket Filter


Applications

Air Filtration Systems

Nonwoven pocket filters are important in air filtration systems. They help take out dust, pollen, and other things from the air. Many homes, offices, and factories use these filters to keep air clean. Their design lets them filter well and not block airflow. This means air moves through easily and the system saves energy. Nonwoven filters use both fine and thick fibers. This mix helps them clean air well and keep airflow strong. These filters can last longer and hold more dust before you need to change them. The table below shows where nonwoven pocket filters are used and why they matter:

Application Sector Description Driving Factors
Industrial Used in manufacturing plants, power plants, and other industrial facilities Strict rules about emissions, need to filter lots of dust
Commercial HVAC systems in office buildings, shopping malls, hospitals Keeping indoor air clean, focus on health and safety
Residential Residential HVAC systems More people care about indoor air, health, and allergies
Specialized (Others) Transportation, mining, agriculture Protecting people and engines, controlling dust, following rules

Industrial and Commercial Use

Factories and big buildings use nonwoven pocket filters to collect dust and clean air. These filters work in vents, filter bags, and dust filter cartridges. Some have special features like nanofibers or activated carbon. These help them catch tiny particles and remove bad smells. This makes the air safer for workers and visitors. In tough places, nonwoven filters last longer and hold more dust. Many industries use mixed nonwoven materials to make filters last longer and cost less. Power plants and cement factories use these filters to control dust and follow air quality rules. The table below shows common uses and benefits:

Facility/Application Type Use of Non-Woven Pocket Filters and Composite Nonwovens Documented Benefits
Residential and Commercial Ventilation Panels Use of spunbonded with meltblown composites and electrospun composites in pocket filters Better filtration, removes small particles and smells, longer filter life
Industrial Air Filter Bags Membrane laminated over needlefelts, scrim reinforced needlefelts, scrim reinforced spunlace felts Holds more dust, lasts longer, works well in tough places
Industrial Fume Cartridge Dust Filters Membrane laminated over spunlace, membrane laminated needlepunch Controls pollution better, saves money
Air Purifiers Glass nanofiber or glass microfiber/synthetic blends with cellulose or synthetic fiber support, nonwoven with activated carbon fabric Filters better, removes smells, lasts long, good for the environment
Automotive Cabin Air and Air Intake Meltblown composites with electrostatic material or activated carbon, electrospun nanofiber composites Removes small particles and smells, makes air inside cars better

Healthcare and Cleanrooms

Hospitals and cleanrooms need very clean air. Nonwoven pocket filters help by using many layers to filter air. They use synthetic fibers and fit a lot of filter area in a small space. These filters catch dust and particles at different steps. They work as pre-filters before HEPA or ULPA filters. This setup makes sure only the cleanest air gets to sensitive places. Nonwoven filters keep pressure drop low, so air keeps moving well. They are thrown away after use, which lowers the risk of germs spreading. Hospitals, labs, and cleanrooms trust these filters to keep air free of particles. Nonwoven pocket filters also work in water filters and dust collectors, helping keep air and water safe.

Tip: Nonwoven pocket filters can work with many airflow speeds, so they fit many air filtration systems in healthcare and cleanrooms.


Nonwoven pocket filters have special fibers and pockets that catch dust. They help keep the air clean in many places like factories and hospitals. When picking a nonwoven filter, people should think about how much it costs. They should also check how well it filters, what temperatures it can handle, and how many particles it can hold. The right filter keeps people and machines safe in hard places. Good brands make filters that work well and last a long time.

  • Key things to think about:

    • Cost

    • How well it filters

    • How many particles it holds

    • What temperatures it can handle

FAQ

What makes a non-woven pocket filter different from other filters?

non-woven pocket filter has nonwoven fibers put together in a random way. This design gives the filter more surface area. It helps the filter catch more dust and dirt. The filter can trap both big and small particles. This makes it good for cleaning air and collecting dust in many places.

How does non-woven filter cloth improve air quality?

Non-woven filter cloth catches dust, pollen, and tiny bits in the air. The filter cloth works well to take out bad things from the air. This helps make the air inside buildings cleaner. It also helps people live and work in healthier spaces.

Where can nonwoven fabric filters be used?

Nonwoven fabric filters are used in air filters, water filters, and dust collectors. Factories, hospitals, and offices use these filters. They help keep their filtration systems working well and running smoothly.

What factors affect the performance of nonwoven filtration media?

The kind of fibers, the size of the pores, and how thick the filter is all matter. These things help the filter catch more dust and keep air moving. Taking care of the filter often also helps it work better for longer.

Can nonwoven filters be used for water filtration?

Yes, nonwoven filters can be used to clean water. The filter takes out dirt and other bits from the water. This means nonwoven filters are good for both air and water cleaning jobs.


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