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    Sound absorbing materials

    Noise-absorbing materials are suitable for a variety of applications. Within the field of room acoustics, these materials are often aesthetic and suitable to reduce reverberation in the space.

    When it comes to technical applications, the term acoustic foam is often used. A well-known example of such acoustic material is convoluted foam. In terms of technical foams, especially our product FireSeal is extremely distinguishing; as far as we know, this is the only polyurethane foam which fire resistance is of such high level that it is even approved to be used in escape routes in buildings.

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    Ruben de Visser

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    Sound absorbing plate

    We offer sound absorption mainly as a sound absorbing plate. Sound absorption has to be hung on visible surfaces in order to be able to muffle sound properly.

    Sound waves are reflected from these annoying surfaces. Think of the walls and ceiling of an enclosure or room. The sound absorbing plates therefore have a self-adhesive backing. In this way, they are easy to apply.

    A sound-absorbing plate is different from a sound-insulating plate. Simply sticking sound-absorbing sheets on a wall does not improve the insulation to the other side of the wall.

    A sound-absorbing plate does not stop sound, but ensures that sound does not reverberate. In this way, sound absorption prevents sound from being reflected back into the room. And this benefits the sound quality or acoustics in the room.

    Composition of sound absorbing plate

    EASY Noise Control is a specialist in the area of acoustics. As a result, we have the most versatile range of sound absorbing plates. Varying from polyurethane foam, melamine foam, polyester wool, rock wool, glass wool, acoustic ceiling panels, wall panels, suspended ceiling panels. All these solutions have one thing in common: they absorb sound.

    This is because all these materials are open-celled. Sound waves have to penetrate these materials when they come into contact with them. This causes a sound wave to lose its energy.

    The degree to which a sound-absorbing material or board absorbs sound is usually expressed in terms of an Alpha-w value or NRC value. These are single-number values and a kind of average damping value for a material (in simple terms). The higher this number (maximum 1.0 or 100%), the better the attenuation.

    The acoustic value of a sound absorbing material is determined by a number of factors. These include the type of material, cell and fabric density (density), thickness, any top layer and application. It is important to note that the thicker the material, the greater the frequency range of attenuation.

    A 6 mm material will never attenuate in the 125 and 250 Hz frequency ranges. This requires materials of at least 40-50 mm thickness. We therefore offer several thicknesses.

    Other properties

    In addition, the sound-absorbing materials each have their own advantages and disadvantages. For example, polyurethane foam is a technical quality foam, lightweight and self-adhesive. But, for example, it is usually not suitable for sticking to walls or ceilings in public buildings. The fire class for this is too low, with the exception of FireSeal.

    Acoustic ceiling panels and wall panels are again specially developed for public areas. They comply with high fire properties and, moreover, are aesthetically designed to fit into an interior. We also call these solutions an acoustic solution rather than a sound-absorbing panel. Of course, the core consists of a sound absorbing plate in the form of rock wool, glass wool or polyester wool.

    Within these acoustic solutions, there is a great deal of diversity. There are solutions especially for offices, industry, gymnasiums, laboratories, etc. Situations that each demand different qualities from the solution. Think, for example, of impact-resistant solutions in a gymnasium or a ceiling that can be sprayed clean in a kitchen.

    Melamine foam is a sound absorbing plate that is lightweight and fireproof. Unfortunately, its disadvantage is that it is less resistant to dirt and moisture.

    We offer the right solution for every acoustic problem. If you cannot find the solution, we will be happy to help.