FILTERBAGS

Customer-specific filter bag design

konfAir supplies filter bags to distributors, plant manufacturers and service companies in Denmark working with industrial dust filtration. The filter bags are designed and manufactured to suit the individual filtration system, dust type and operating conditions – with a focus on efficient particle filtration, limited pressure drop, long lifetime and a solution that fits your customer’s system precisely.

We have been designing and manufacturing filter bags, industrial filters and bag filters, as they are also known, for more than 50 years. They can be used for air filtration across a wide range of industries, and through close dialogue with you, we adapt both the filter media and construction to the specific application. The aim is to achieve filtration that is efficient, energy-efficient and environmentally responsible. When purchasing filter bags, we can also supply filter cages.

See cages for filterbags

We design your industrial filter bag

We have numerous design variations of each individual component of the filter bag, all depending on the application of the filter system, but also its cleaning method such as pulse-jet, reverse-air or shaker. Therefore, we have a wide range of design options in our product range when choosing the top, bottom and the way in which the filter bag is either sewn or welded. The design of the filter bag is made with careful consideration to the supporting cage and the cell plate for optimal fit.

For optimal installation of the filter bags, you will find our installation instructions here.

See installation instructions

"Thanks to our decades of experience and know-how in industrial dust removal with filter bags, we determine the optimal filter material and filter bag design for each individual filter unit based on requirements for emission, temperature conditions, dust load and dust composition.
The dialogue between the customer and konfAir is crucial to selecting the right filter material for the task, so contact us for detailed guidance and help in choosing the optimal filter material for your process."

- Søren Raabjerg konfAir

Product advantages

Efficient at even the highest operating temperatures
Effective against the finest dust
Many different qualities

Efficient and easy clean-up
Limited pressure drop

Qualities

Our range of filter media for filter bags contains more than 100 different qualities, all of which consist of technical needle felt made of polymer fibres as standard. By choosing the right filter media, high filtration efficiency is achieved against even the finest dust or the highest operating temperatures. The correct chemical treatment of the filter media or application of a PFTE Membrane helps to ensure that the filter bag is both chemically resistant and easy to clean, so that excessive pressure drop is avoided.

Over the years, we have developed filter bags for the food industry with a filter media and design that apply to the highest requirements in accordance with EC 1935/2004 and EU 10/2011. This includes filter bags for CIP filter systems, among others.

How do i choose the right filter bag for my customer?

At konfAir, we have many years of experience in choosing and developing the right filter bag for your customer. We have some in-depth questions about dimensions, filter plant, cleaning and operating conditions in relation to dust volume, filter surface load, air volume and temperature, so that together we can find the best solution.

Should you be in possession of a used filter bag from your customer, and/or pictures thereof, you are more than welcome to send it to us. We can analyze the used filter bag and together ensure an optimized filtration ability with focus on lifetime versus price.

Get expert guidance

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Questions our customer gets from their customers

1. What are filter bags, and how do they work in industrial extraction systems?

Filter bags are essential components in industrial extraction systems, also called filtration systems. Their primary function is to remove solid particles, dust, and contaminants from airstreams before the cleaned air is discharged or reused. The process involves the contaminated air passing through the filter bag’s specially designed media, which captures the particles while clean air continues through. This ensures a cleaner work environment and protects production equipment from particle-related damage. konfAir has over 50 years of experience developing and manufacturing filter bags tailored to meet specific industrial needs.

2. Which materials are used for filter bags, and how do they affect filtration efficiency?

Filter bags are made from various materials, typically technical needle felt made from polymer fibers, each with unique properties that influence filtration efficiency and durability. The choice of material depends on specific operating conditions, including temperature, chemical exposure, and particle size. Examples of materials include polyester, polypropylene, aramid, and PTFE. konfAir offers a wide range of filter media and can advise on the right quality and impregnation, e.g., with a PTFE membrane, to ensure optimal filtration efficiency—even for the finest dust or at high operating temperatures.

3. When should I replace my filter bags, and how do I maintain them?

The lifetime of filter bags varies depending on operating conditions, particle load, and the quality of the filter media. Signs that it is time to replace filter bags include a significant drop in filtration efficiency, increased pressure drop across the filter, or visible damage to the bags. Regular inspection and proper maintenance, including monitoring differential pressure and cleaning cycles, can extend the lifetime of filter bags. konfAir can advise you on best maintenance practices and offers replacement services to ensure optimal operation and minimal downtime.

4. What are the typical problems with filter bags, and how are they solved?

Common problems with filter bags include clogging, premature degradation, insufficient filtration efficiency, and leaks. Clogging can be caused by an incorrect choice of filter media, excessive particle load, or ineffective cleaning. Degradation can occur due to excessive temperatures, chemical attack, or mechanical wear. konfAir offers expertise in troubleshooting and optimizing filter operation. We can analyze the root causes and propose solutions, including selecting more resistant materials, adjusting cleaning methods, or adapting the filter bag design to improve performance and extend service life.

Need help?

A proper filtration, along with energy consumption, is often crucial in choosing the right filter for your customer. We help you to success with honest and competent guidance.

Cages

Customized design
Optimal adaptation to the filter bag
Simple assembly

Leak detection

High Performance
Heat-stable equipment
Easy localization of leaks

Cartridge filters

100% dustproof
Absorbs vibrations
Approved for use in the food industry