#Research & Development

2020-10-22

Compact solution with great effect

Modern sound absorbers optimize the sound experience. They provide valuable services in recording studios and concert halls, but can also be used in everyday life wherever the background noise is disturbing. Until now, these absorbers have been bulky and not very suitable for small rooms. Together with Kaiser Möbelwerkstätten GmbH, the DITF have developed a sound absorber with an effective technology that fits into the smallest of spaces. It absorbs not only high and medium, but also low frequencies. The research project was funded by the German Federal Ministry of Economics and Energy.

Sound absorbers for optimal acoustics

A textile is responsible for the medium and high frequencies. The low frequencies are absorbed by a novel cavern structure. The cavities are arranged in such a way that they act like classic Helmholtz resonators despite their significantly smaller depth and volume. The scientists were able to demonstrate that these two principles not only complement, but also reinforce each other. The result is an optimal sound experience.

Since the compact component is available in various sizes and colors, it also fits well in open-plan offices or in living spaces located along busy roads. "It is the car traffic in particular that causes the deep tones that cannot be filtered out by many conventional sound absorbers", explains Karsten Neuwerk, research associate at the DITF.

Textile and cavity structure in the wooden body absorb disturbing frequencies (Photo: DITF)

Sound absorbers in the open-plan office (Photo: DITF)

The sound absorbers developed in the research project are sustainable, and not only because they are manufactured in an environmentally-friendly way. In its Agenda 2030, the United Nations has set 17 sustainability goals, including health and well-being. Noise protection plays an important role in so-called "psychoacoustics". "With our research work, we not only set technical standards, but also ensure a pleasant auditory experience that promotes well-being with optimal volume and sound modulation," summarizes Dr. Michael Haupt. He heads the e-textiles, automation and acoustics division at the DITF.

The results of the research project are several demonstrators of which effectiveness could be proved by measurement.

The absorbers will be available on the market before the end of this year for architects, sound engineers and private consumers.

CAD representation of a milled slush cavern with the resulting absorption spectrum (right) (Figure: DITF)

Absorption curve measured in the impedance measuring tube of the DITF (Figure: DITF).

Stylish design made from sustainable materials – two DITF research projects receive Techtextil Innovation Awards

Materials made from domestic, renewable raw materials reduce CO₂ emissions, prevent microplastics from entering the environment, and close the material cycle. The German Institutes for Textile and Fiber Research Denkendorf (DITF) are developing nature-based alternatives to synthetically produced and predominantly petroleum-based materials. Two research projects have received a prestigious Techtextil Innovation Award. NUO Flexholz and the lignin-coated material FormLig demonstrate that sustainable concepts can meet high standards of functionality and design. Both projects were carried out in close collaboration with industry.

Fabolose: Fabricating vegan and circular leather alternatives from bio-tech-derived cellulose

Fabulose is an EU funded project coordinated by the German Institutes of Textile and Fiber Research (DITF). Its consortium consists of leading research institutes, biotech innovators, and industry stakeholders who aim to create high-performance, biobased and recyclable leather-like fabrics, using efficient biotech production routes for bacterial cellulose, cyanophycin and bacterial pigments

More safety and comfort for protective clothing thanks to auxetic fabrics

When everyday materials are pulled, they stretch or elongate in the direction of the pull and become narrower in cross-section. We can also observe this property in two-dimensional textiles. Auxetic structures behave differently here. They have the striking property of not changing under tensile stress or even increasing their width or thickness. These properties are advantageous, for example, in protective textiles or textile filter media. The DITF are researching auxetic fabrics for various applications.

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Hohenstein publishes 2025 Sustainability Report

The testing and research service provider Hohenstein has published its latest sustainability report, outlining key progress and strategic initiatives. The report focuses on ambitious CO₂ reduction targets, the company’s new mission statement and the systematic expansion of sustainable services for customers worldwide.

ITM presents cutting-edge textile research at Techtextil

From April 21 to 24, 2026, the Chair of Textile Machinery and High Performance Material Technology (ITM) at TUD Dresden University of Technology will be presenting its current research at Techtextil, the leading international trade fair for technical textiles and nonwovens. In Hall 12.0, Stand D41, the team will be demonstrating how it combines high-performance fibers, AI-supported digital development tools and innovative machine technologies to develop textile solutions for lightweight construction, construction, medical technology and sustainable production from atom to product.

Techtextil 2026: KARL MAYER impresses as an innovative sector partner

KARL MAYER looks back with satisfaction on its participation in Techtextil 2026. From April 21 to 24, the international industry leader used the trade show in Frankfurt to meet with numerous key customers at its booth and, at the same time, establish many new contacts. Most visitors came from Germany, followed by major markets such as Poland, the United Kingdom, Turkey, France, and Portugal.

BTMA backs global growth while investing in future UK leaders

As one of a number of new initiatives launched this year, the British Textile Machinery Association (BTMA) is launching the UK-India Textile Machinery Coalition. The UK-India Free Trade Agreement, signed in July 2025, has implications that extend across sourcing, competitiveness and long-term trade dynamics, believes BTMA CEO Jason Kent.

China projected to increase cotton production, yields, and imports in 2026/27

World cotton production in the 2026/27 season is projected at 25.9 million tonnes, exceeding global consumption of 25.2 million tonnes, according to the May 2026 issue of Cotton This Month. That means both production and consumption are expected to remain close to current season levels, while global cotton trade is projected to decline by 2.7% to approximately 9.6-9.7 million tonnes.