Did you know this about foam?
At UXEM, we offer foams with various properties that can be fully customized to meet your specific needs. Whether you're looking for fire-retardant foams for safety, anti-static foams for electronic applications, or foams with other special properties such as sound insulation or water resistance, we have the right solutions for your project. With our wide range of foam types, we can provide materials that not only meet technical requirements but are also optimized for performance in specific environments. Our foams are versatile, reliable, and offer an excellent foundation for any product.
The different properties of foam
Flame retardant
Flame-retardant foam slows down the spread of flames and reduces the risk of fire propagation. This type of foam is commonly used in environments where extra fire safety is required, such as in construction, air ventilation, vehicles, and the furniture industry. Each foam and application often requires a specific fire classification.
Shock absorbing
Shock-absorbing foam dampens impact and distributes forces across the surface. It is used in applications where protection against impacts or falls is needed, such as in packaging, transportation protection, sports equipment or safety accessories.
Antistatic
Anti-static foam (ESD) prevents the buildup of static electricity, which is important in environments where sensitive electronic equipment is used. This type of foam is commonly applied in packaging and transportation of electronics.
Tear strength
Foams with high tear strength are resistant to tearing or cracks under pressure or stress. This property makes the material particularly suitable for applications that are constantly under load, such as in the automotive industry (polishing) or other industrial applications.
Reticulated
Reticulated foam has a network structure of open cells, making it stronger and more durable. The cell walls are 'blown open.' The openness of the foam is indicated in pores per inch (ppi). This type of foam is often used in applications such as industrial filters, both for water and air.
Seal
Sealing foams with good sealing capacity are often used in applications where it is important to keep air, water, or dust out. They provide an efficient seal and are commonly applied in doors, windows, and packaging.
Insulation value
Foams with high insulation values provide excellent thermal and sound insulation. They are often used in construction, vehicles, and appliances to prevent heat loss or reduce noise pollution.
Recycled
Recycled foam is produced from recycled materials, making it a more sustainable choice for applications aiming to have less environmental impact. It is increasingly used in manufacturing materials, furniture, and insulation.
Water absorption
Foams with low water absorption absorb less moisture, making them more resistant to environments with high humidity. This type of foam is used in applications such as outdoor use, water sports equipment, and insulation.
Conductive foams
Conductive foams conduct electricity and are used in applications where it is important to control static charge or protect electronic components from electrostatic discharges. This foam is commonly applied in electronics and IT packaging.
Density
The density of foam is indicated in kg/m3, also known as specific weight. This determines the firmness and durability of the material. Foams with higher density are often stronger and provide more support, while lower density foams are more flexible and lighter, which influences their applications, such as in packaging or mattresses.
Hardness
The hardness of foam is often indicated in kPa and is important for the application. Foams with a lower kPa are suitable for comfort foam or lightweight packaging, while higher kPa foams are important for heavy packaging or technical applications.
Test methods
Whether you're looking for softness, firmness, or durability, we produce foams in various densities and hardness levels. The right properties ensure that your application – from mattresses to industrial uses – performs optimally.
To ensure quality, we extensively test our foams in our own laboratory. We use international ISO standards, so you can be sure that the specifications are accurate. Below, we explain the key properties and their corresponding ISO tests.
ISO 845 – Density (SG)
Density (or specific gravity) indicates how much the foam weighs per cubic meter. We produce foams with densities ranging from 10 to 300 kg/m³. A higher density typically means a longer lifespan, but also a different weight. If you're aiming for durability, this is an important property to consider.
ISO 1798 – Tensile Strength & Elongation at Break
How much force can the foam withstand before it tears? That is the tensile strength. This is expressed in kPa. And how much the foam stretches before it breaks? That is called elongation at break and is expressed in percentage (%). These properties are measured with specially shaped test samples. Especially when the foam is mechanically loaded, such as in sports or technical applications, these are important values.
ISO 1856 – Permanent Deformation
How well does the foam rebound after prolonged loading? In this test, the foam is compressed to 50% of its original height at 70°C for 22 hours. Afterward, it rests for 30 minutes. We then measure how much of its original height the foam has regained in percentage loss. This provides a good indication of how well the material retains its shape.
ISO 2439 – Hardness (ILD)
Hardness indicates how much force is required to compress the foam. This is measured in Newtons (N). The most commonly used value is the force needed to compress the foam for 30 seconds to 25%/40%/65% of its original height. This allows you to know exactly how firm or soft the material feels. For a chair, you usually want a higher hardness than for a mattress.
ISO 3385 – Dynamic Fatigue
How long does the foam perform under constant load? In this test, we compress the foam block 80,000 times to half its thickness. We then measure the hardness again. The amount of decrease shows how well the foam withstands long-term use. Ideal for those who choose quality and comfort in the long term.
ISO 3386 – Stiffness (CLD)
Stiffness (Compression Load Deflection) is similar to hardness but is measured in a slightly different way. In this test, we compress small foam blocks (10x10x5 cm) to 40% of their original height and measure the force required. The result is given in kilopascals (kPa), which indicates how rigid or flexible the foam is.
ISO 3795 – Flammability
The flammability of foam can be measured and explained using various test methods, such as how quickly the flame extinguishes, horizontally or vertically. Many fire classifications are established per target group/industry. MVSS-302/ UL94/ DIN 4102 and the EN 13501-1 European Norm.
ISO 8307 – Elasticity
In this test, we drop a metal ball onto the foam and measure how high it bounces back. The higher the 'rebound,' the more resilient the foam is. Elasticity (Rebound resilience) indicates how lively and dynamic the material feels.
ISO 10534 – Sound Absorption
In this test, we measure how well a material absorbs sound. This is done using a special (impedance/standing wave) tube in which sound waves are directed. By observing how much sound is reflected and how much is absorbed, you get a clear picture of the sound-absorbing properties of the foam.
Frequently asked questions
How do I know which foam I need for my application?
The type of foam you need depends on the specific requirements of your project, such as the desired properties (e.g., flame retardant, shock absorption, or insulation). Contact us, and we will help you choose the right foam based on your needs and the environment in which the foam will be used.
What is the difference between low and high-density foam?
Can foam be modified to be fire-retardant?
What are the average delivery times?
Can I also come by?
How can we help you?
At UXEM we are happy to help you. Do you have questions about our products or services? Please feel free to contact us
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