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(c) Autoneum Management AG
27.06.2022

Autoneum: Sound-insulating technologies for electric drives

Catering to the acoustic requirements of electric vehicles, Autoneum has extended its concepts for noise-reducing engine encapsulations to new applications related to electric drives. Hybrid-Acoustics PET and the foam-based alternatives Hybrid-Acoustics FLEX and Fit FLEX ensure optimum noise protection in e-cars and thus improve driving comfort. All three technologies are characterized by a high acoustic performance tailored to specific customer needs and zero waste production.

Disturbing noises such as the high-frequency sounds of e-motors and other electric devices or the whining noise of the gearbox are posing new acoustic challenges for vehicle manufacturers worldwide. Anticipating the increasing demand for sound-reducing components in both the front and the rear of e-cars early on, Autoneum has expanded its technologies for noise protection in the engine bay to new tailor-made applications for electric vehicles.

Catering to the acoustic requirements of electric vehicles, Autoneum has extended its concepts for noise-reducing engine encapsulations to new applications related to electric drives. Hybrid-Acoustics PET and the foam-based alternatives Hybrid-Acoustics FLEX and Fit FLEX ensure optimum noise protection in e-cars and thus improve driving comfort. All three technologies are characterized by a high acoustic performance tailored to specific customer needs and zero waste production.

Disturbing noises such as the high-frequency sounds of e-motors and other electric devices or the whining noise of the gearbox are posing new acoustic challenges for vehicle manufacturers worldwide. Anticipating the increasing demand for sound-reducing components in both the front and the rear of e-cars early on, Autoneum has expanded its technologies for noise protection in the engine bay to new tailor-made applications for electric vehicles.

With the fibrous technology Hybrid-Acoustics PET and the two foam alternatives Hybrid-Acoustics FLEX and Fit FLEX, the Company offers three standardized technologies that reduce noise directly at the source, thereby improving driver comfort. All three technologies are produced waste-free and their adaptive capacity to different sizes and shapes allows for a broad spectrum of uses in electric vehicles: from e-motor encapsulations to the reduction of noise and vibration of inverters, gearbox, pumps and compressors. By offering both fibrous and foam-based variants, Autoneum is able to flexibly cater to individual customer needs and preferences with regard to material, acoustic concept, sustainability and costs.

In terms of sustainable noise protection in the engine bay, Autoneum’s patented innovation Hybrid-
Acoustics PET sets the tone: it is made of 100 percent PET with up to 50 percent recycled fibers; cut-offs in production are reclaimed, processed and reused and the material can be fully recycled at the end of product life. The unique textile technology, which is part of the Company’s sustainability label Autoneum Pure, is particularly suited to attenuating high-frequency sounds of the electric drive unit and offers the optimum balance of absorption and insulation. Moreover, components made of Hybrid-Acoustics PET are up to 40 percent lighter compared to standard insulators.

To accommodate the differing preferences of vehicle manufacturers, Autoneum has complemented its lightweight textile technology with two foam-based alternatives. Since the foam is injected in both technologies, no waste is generated during production either. Hybrid-Acoustics FLEX is based on the same acoustic concept as Hybrid-Acoustics PET, but the decoupler is made of foam instead of felt. Autoneum’s Fit FLEX, on the other hand, combines the foam decoupler with an injection molded heavy layer. Thanks to the high geometrical adaptability of foam to even complex shapes, both technologies offer outstanding acoustic performance in the insulation of e-motors and other noise sources in electric vehicles. Furthermore, the absorbing or insulating acoustic quality of the foam can be flexibly tuned to specific customer needs.

Source:

Autoneum Management AG

15.11.2021

Autoneum: Flexi-Loft with high acoustic performance

The acoustic performance of components for the vehicle interior such as inner dashes or carpets depends on the noise-reducing quality as well as the geometrical adaptability and fill power of their material. With Flexi-Loft, Autoneum offers a new felt-based technology that thanks to a unique blend of recycled cotton and functional fibers reduces product weight and allows for accurate adaptation even to complex shapes. The textile material therefore provides a versatile and more sustainable alternative to foam.

The acoustic performance of components for the vehicle interior such as inner dashes or carpets depends on the noise-reducing quality as well as the geometrical adaptability and fill power of their material. With Flexi-Loft, Autoneum offers a new felt-based technology that thanks to a unique blend of recycled cotton and functional fibers reduces product weight and allows for accurate adaptation even to complex shapes. The textile material therefore provides a versatile and more sustainable alternative to foam.

In order to achieve high acoustic performance at minimum weight and maximum sustainability, Autoneum is continuously advancing its textile product portfolio. When it comes to components for the vehicle interior, for example, standard thermoplastic felts excel through their acoustic absorption, robustness and environmental friendliness. However, since felt-based materials are generally less voluminous and moldable as foam components, they require more weight to thoroughly fill the areas of varying thickness between the surface of the component and the vehicle’s body-in-white. In contrast, Autoneum’s Flexi-Loft technology is significantly lighter, more flexible and more adaptable than standard felts. In addition, the fiber-based material is versatile and clearly outperforms current foam products in terms of sustainability.

Thanks to its blend of recycled cotton and polyester fibers, Flexi-Loft substantially reduces component weight while improving geometrical adaptability and acoustic performance, especially in areas of low thickness. Thanks to the specific properties of the fibers, Flexi-Loft enables a precise adaptation to a wide variety of vehicle bodies, thereby improving the noise-insulating qualities of the respective product. Even at low weight, Flexi-Loft covers a wide range of material thicknesses, thus proving to be an ideal decoupling material for interior components with complex shapes such as inner dashes and automotive carpets. As a lightweight, flexible and sustainable alternative to both standard felts and foam, Flexi-Loft distinguishes itself by its versatile application in combination with existing Autoneum technologies such as Hybrid-Acoustics and Prime-Light. Moreover, the material helps to reduce odor and dust inside the vehicle.

Flexi-Loft consists of at least 50% recycled cotton fibers, and cut-offs generated during the manufacturing process are reclaimed, processed and then reused in the production of new felt blanks.

Autoneum is already using Flexi-Loft worldwide as an insulator for various carpets, inner dashes and other acoustic components based on its Prime-Light technology. The application of the material as an effective decoupler in inner dashes made of Hybrid-Acoustics will be launched on the European market in 2023.

More information:
Autoneum Automotive acoustic
Source:

Autoneum Management AG

Das Innenleben von drapilux A3 – der Würfel für die Raumgestaltung (c) drapilux
Das Innenleben von drapilux A3 – der Würfel für die Raumgestaltung
04.03.2019

drapilux launcht Soundwise: flexible und dekorative Schallabsorber

Fabrik Lofts, Coworking Spaces, außergewöhnliche Hotel-Tower: Die moderne Architektur ist geprägt von offenen Raumstrukturen sowie schallharten Oberflächen – und damit schlechten raumakustischen Eigenschaften.

Textilhersteller drapilux bringt mit Soundwise erstmalig flexibel einsetzbare Elemente auf den Markt, die die Akustik verbessern, sich in die bestehende Architektur integrieren lassen oder auch völlig neue Gestaltungsmöglichkeiten bieten. Darüber hinaus verfügen die waschbaren Stoffbezüge der Schallabsorber über intelligente Zusatzfunktionen wie drapilux flammstop (schwer entflammbar), drapilux air (luftreinigend) und drapilux bioaktiv (antibakteriell), die sich positiv auf das Wohlbefinden auswirken.

Ergänzend zu den flammhemmenden, schallabsorbierenden Stoffen hat drapilux nun auch miteinander kombinierbare Akustikelemente für die Wand-, Decken- und Raumgestaltung geschaffen, um im Objekt einen effektiven Schallschutz zu gewährleisten. Die Soundwise-Akustiklösungen vereinen geräuschreduzierende Eigenschaften mit der bekannten Ästhetik hochwertiger drapilux-Textilien.

Fabrik Lofts, Coworking Spaces, außergewöhnliche Hotel-Tower: Die moderne Architektur ist geprägt von offenen Raumstrukturen sowie schallharten Oberflächen – und damit schlechten raumakustischen Eigenschaften.

Textilhersteller drapilux bringt mit Soundwise erstmalig flexibel einsetzbare Elemente auf den Markt, die die Akustik verbessern, sich in die bestehende Architektur integrieren lassen oder auch völlig neue Gestaltungsmöglichkeiten bieten. Darüber hinaus verfügen die waschbaren Stoffbezüge der Schallabsorber über intelligente Zusatzfunktionen wie drapilux flammstop (schwer entflammbar), drapilux air (luftreinigend) und drapilux bioaktiv (antibakteriell), die sich positiv auf das Wohlbefinden auswirken.

Ergänzend zu den flammhemmenden, schallabsorbierenden Stoffen hat drapilux nun auch miteinander kombinierbare Akustikelemente für die Wand-, Decken- und Raumgestaltung geschaffen, um im Objekt einen effektiven Schallschutz zu gewährleisten. Die Soundwise-Akustiklösungen vereinen geräuschreduzierende Eigenschaften mit der bekannten Ästhetik hochwertiger drapilux-Textilien.

Die akustische Wirkung von Soundwise wurde in Labors getestet und bestätigt. Besonders Großraumbüros profitieren von der Schallabsorption: Wissenschaftler empfehlen bei geistigen Tätigkeiten maximal 50 Dezibel, was normaler Gesprächslautstärke entspricht. Wenn mehrere Gespräche in einem Büro geführt werden, wird diese Grenze ohne akustische Lösung schnell überschritten.

Die Absorber bestehen aus gelochten Faltelementen aus 2 Millimeter dickem brandhemmendem Zellstoff, der mit einer kratzfesten Mattfolie cellophaniert wird. Auf den lnnenseiten der Elemente ist ein Akustikvliesstoff aufgebracht. Je nach Aufbautyp – A1, A2 oder A3 – wird eine unterschiedliche Anzahl Faltelemente zu den Absorberelementen zusammengesetzt. Das Akustikvlies und die Löcher im Zellulose-Körper sorgen für einen idealen Strömungswiderstand und damit für eine optimale Schallabsorption. Alle drei Produkte A1, A2 und A3 sind nach DIN EN ISO 354:2003-12 /1/ getestet.

More information:
Schalldämmung Schallabsorber
Source:

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