Open cell foam - properties and industrial applications

Open-cell foam is a technical material widely used in industry for its insulating properties. permeability, sound absorption and damping. Unlike closed-cell foams, it allows air and fluids to circulate, making it a key solution for applications such as acoustic management, vibration filtration or dissipation.

At ADDEV Materials, we support manufacturers in the selection, transformation and integration of technical foams adapted to their mechanical, thermal and environmental constraints, with a performance- and sustainability-oriented approach.

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open cell foam

Open cell foam for industrial applications

In an industrial environment, open cell foam is used for :

  • absorb noise and vibrations
  • filter air or particles
  • protect sensitive components
  • improve acoustic and mechanical comfort

It is particularly relevant in HVAC systems, electronic equipment and confined environments.

The main difference lies in the structure:

  • Open cell → permeable, absorbent
  • Closed cell → waterproof, insulating

The choice therefore depends directly on the expected function:
 absorption vs sealing.

What is open cell foam?

Open cell foam is an alveolar structure in which the cells are interconnected, allowing the circulation of air, gases or liquids.

This characteristic gives it :

  • a high permeability
  • a high sound absorption capacity
  • a good compression and return capacity

It is mainly made from polyurethane (PU), but can also be developed in other polymers depending on application requirements.

Supplier of open cell foam and custom processing

ADDEV Materials does more than just distribute technical foams.

We operate across the entire value chain:

  • selecting the right material
  • optimisation of properties (density, thickness, structure)
  • made-to-measure processing :

This approach makes it possible to respond precisely to industrial constraints and optimise overall system performance.

Our conversion capabilities enable us to deliver parts that are ready to be integrated into your industrial processes, thereby reducing assembly costs and material losses. .

Open cell foam vs closed cell foam: what's the difference?

The main difference between open-cell and closed-cell foam lies in their structure and functional properties.

Open cell foam

  • Alveolar structure interconnected
  • High permeability air and fluids
  • Very good sound absorption
  • Poor sealing
  • Good vibration damping

Closed cell foam

  • Structure hermetic with independent cells
  • Low permeability
  • Limited acoustic performance
  • Excellent waterproofing (air, water, dust)
  • Lower depreciation

In a nutshell:

  • choose open-cell foam for absorb
  • choose a closed cell foam for insulate or seal
open cell foam vs. closed cell foam

Industrial applications of open-cell foam

Acoustic management

  • noise reduction in railway cabins
  • noise reduction in industrial equipment
  • sound insulation for HVAC systems

Air filtration and circulation

  • industrial air filters
  • data centre flow management
  • protection of electronic components

Damping and mechanical protection

  • shock absorption
  • protection of sensitive components
  • compensation for mechanical tolerances

Electronics & Energy

  • indirect thermal management
  • component maintenance
  • protection in batteries and power systems

Which industrial markets use open-cell foam?

How to choose the right open cell foam

The choice of foam depends on a number of technical parameters.

1. Density and mechanical performance

High density improves mechanical strength but reduces compressibility.

To be adjusted according to load and durability constraints.

2. Acoustic properties

Acoustic performance depends on :

  • cell structure
  • thickness
  • density

The more open and thicker the foam, the more effective the absorption.

3. Thermal and environmental resistance

Some foams are suitable for :

  • high temperatures
  • humidity
  • chemical environments

Critical for demanding industrial applications.

4. Compatibility with your industrial process

It's essential to think ahead:

  • cutting
  • assembly
  • production constraints

Unsuitable foam can have a direct impact on productivity.

Why choose ADDEV as your open cell foam supplier?

ADDEV Materials is positioned as a technical partner, capable of transforming a functional need into a material solution.

Our strengths:

Multi-material expertise

Technical support

International industrial presence

Advanced converting capabilities

Cost / performance optimisation

We don't sell a product, but a solution tailored to your application.

Our partner brands in technical foam

To guarantee high performance and lasting industrial reliability, ADDEV Materials relies on a network of partners recognised internationally for their expertise in technical materials.

We select leading manufacturers to offer solutions tailored to the most demanding environments:

Rogers logo
Armacell
Saint-gobain
Interep

Need open cell foam for your application

Each industrial application has its own specific constraints.

Our experts can help you with :

  • defining the right material
  • optimising design
  • secure your product performance

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FAQ - Open cell foam

Open-cell foam allows air to circulate and absorbs sound, while closed-cell foam is airtight and used for insulation or sealing.

It is used for sound absorption, filtration, damping and protection of components in industrial environments.

No, it is permeable. For waterproofing purposes, closed-cell foam is preferable.

Open-cell polyurethane foams are the most widely used for their sound absorption performance.

The density depends on the application: low for absorption, high for mechanical strength.

Yes, as long as you choose a formulation that is suitable for UV, humidity and environmental constraints.

Open-cell foams are particularly suitable thanks to their permeable structure.