Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF of Darmstadt at K 2019 in Düsseldorf -- K Trade Fair
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Rubber & TPE Science Campus

Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF

Bartningstr. 47, 64289 Darmstadt
Telephone +49 6151 705-0
Fax +49 6151 705-214

This company is co-exhibitor of
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

Hall map

K 2019 hall map (Hall 7): stand SC01

Fairground map

K 2019 fairground map: Hall 7


Prof. Dr. Rudolf Pfaendner

Bereichsleiter Kunststoffe

Dipl.-Ing. Shilpa Khare

Gruppenleiterin Technikum

Dr. Elke Metzsch-Zilligen

Gruppenleiterin Additivierung
Rezepturentwicklung und Dauerhaftigkeit

Dr. Michael Großhauser


Dr. Frank Schönberger

Gruppenleiter Funktionspolymere

Our range of products

Product categories

  • 01  Raw materials, auxiliaries
  • 01.02  Thermoplastic elastomers
  • 01.02.009  PUR-Elastomers


  • 01  Raw materials, auxiliaries
  • 01.02  Thermoplastic elastomers
  • 01.02.016  Other thermoplastic elastomers
  • 01  Raw materials, auxiliaries
  • 01.10  Additives
  • 01.10.002  Additives, other
  • 01  Raw materials, auxiliaries
  • 01.10  Additives
  • 01.10.028  Fire protection agents
  • 01  Raw materials, auxiliaries
  • 01.10  Additives
  • 01.10.105  Stabilizers
  • 01  Raw materials, auxiliaries
  • 01.14  Others
  • 01.14.024  Composite materials

Our products

Product category: Fire protection agents


Recycling plastic waste after it has been used takes on special significance as our society becomes increasingly aware of the consequences of CO2-emissions, the growing mountains of waste and at the same time the scarcity of fossil-based raw materials. This also applies to the use of flame retardant plastics which are increasingly equipped with halogen-free flame retardants for environmental reasons.

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Target Products
Flame Retardant

Hot Topics
Circular Economy

Product category: Science and consulting


Plastic waste and its improper handling lead to global environmental problems. Packaging plastics are a particular problem, because they are disposed of after a short use cycle or released into the environment on landfill sites. One solution to this problem is to turn plastic waste from short lived consumer products into high-quality materials that find new application fields long-lasting technical products. In the ”UpcyclePET” research project, Fraunhofer LBF and EASICOMP GmbH (an expert in long glass fiber reinforced thermoplastics) are developing a new material based on used beverage bottles made of PET (polyethylene terephthalate). Potential target applications are automotive lightweight parts.

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Structural elements, Under the hood

Target Products
Complex Geometry, Solid

Hot Topics
Circular Economy, Lightweight Engineering

Product category: Additives, other, Stabilizers


Plastics are exposed to high temperatures and mechanical stresses during processing. Without additives, this leads to the degradation of the material and loss of mechanical properties. Scientists at Fraunhofer LBF have developed new bio-based processing stabilizers that can be prepared through simple synthesis methods. They exhibit excellent process stabilizing effects on polyolefins and could replace industrially established petroleum-based stabilizers. In addition, the new antioxidants exhibit low volatility and show no degradation products that are harmful to humans. They are therefore particularly suitable for applications in food processing or pharmaceutical technology.

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Food, Functional Parts, Medical

Hot Topics

Product category: Composite materials


Fatigue of components made of continuous fiber reinforced plastics involves a variety of different damage mechanisms. Different types of cracks lead to changes in the local material and component stiffness, which also constantly changes the load distribution in the component over the duration of load-bearing. Current work at Fraunhofer LBF considers the effect of microscopic cracks on the effective stiffness of the composite material in order to take better account of these redistributions in the development of new component design methods.

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Automotive, Industrial

Target Products
Film/Sheet, Complex Geometry, High Strength, Solid

Hot Topics
Lightweight Engineering

Product category: Science and consulting

Optimized injection molding tool facilitates direction-dependent characteristic value determination and reliable component design

An injection molding tool optimized at Fraunhofer LBF facilitates the production of short glass fiber reinforced unidirectional plates for the production of highly oriented specimens under different removal angles. The tool was designed to ensure that the reinforcing fibers are oriented approximately unidirectionally (UD) in the direction of flow. Test specimens for the tensile tests can be removed from the plate at any angle to the flow direction to determine parameters for the material description. This facilitates resource-conserving component design that is suitable for the materials

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Product category: Other thermoplastic elastomers


Elastomers are used in many different application areas, primarily for damping vibrations. Their operating temperature is generally between -50 °C and 150 °C. However, during operation the temperature development depends not only on the ambient temperature, but also to a significant extent on self-heating due to the dissipated energy under cyclical load. The dissipated energy is decisively affected by the material properties. The increases in temperature impact the mechanical behavior and thus the lifetime, and for this reason should be taken into account in the design process. The AiF projects ”Elasto-Opt I and II” were implemented in a partnership between the Technische Universität Darmstadt, Bundeswehr University Munich and Fraunhofer LBF. They focus on capturing and accounting for this temperature dependency in FEM simulation and methods of lifetime analysis. The result is a concept for temperature-dependent lifetime prognosis of elastomer components that is ready for use in applications.

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Automotive, Industrial

Target Products
Complex Geometry, Semisolid, Flexible/Elastic

Company news




Oct 11, 2019

Fraunhofer LBF and BAM develop faster procedure for flame-retardant plastics

Many modern plastic materials do not come without added flame protection. When developing new plastic compositions of this kind, the aim is to achieve an optimum combination of flame retardancy, processability and mechanical properties. Scientists from the Fraunhofer Institute for Structural Durability and System Reliability LBF and the Bundesanstalt für Materialforschung und –prüfung (BAM) have demonstrated how this objective can be achieved more quickly. The researchers are proposing both accelerated procedures in processing and in the characterisation of fire behaviour. The numerous investigations within the scope of the research project entitled ‘Rapid Development of Flame Retarded Thermoplastic Polyurethane’ have generated valuable data. A particular application of these data is for medium-sized businesses to optimise their already existing or the development of new flame-retardant formulations in the future. The results of the project thus contribute to safe products on the market. Fraunhofer LBF will be presenting more about flame retardants at the "K" trade fair from October 16 to 23, 2019 at Plastics Europe in Hall 7 SC 09.

The increasing electrification of mobility and digitalisation of everyday objects is resulting in a greater demand for specialised materials. Thermoplastic polyurethane (TPU) as a high-performance material, is among these future materials. The market for these products is already valued at 1.5 billion euro, with experts expecting an annual growth of 5.3 percent until 2025. In addition to excellent qualities such as damping capacity, low-temperature flexibility, chemical stability and wear and abrasion resistance, these types of polymers also display thermal instability and light flammability, which makes the development of flame-retardant materials particularly demanding. At the same time, it is observed during the processing of TPU that a high shearing sensitivity results in a build-up of shear stress, which complicates a uniform dispersion of the flame retardant. The development of flame-retardant TPU formulations is therefore demanding and cost-intensive.

In order to support industry with these challenges, scientists from the two institutes have cooperated for the project ‘Rapid Development of Flame Retarded Thermoplastic Polyurethane’. It is part of the ‘Industrielle Gemeinschaftsförderung und -entwicklung’ (IGF) programme of the Federal Ministry of Economics and Energy.

With the so-called ‘Combinatorial Compounding/High Throughput Screening’ (CC/HTS) system, the researchers sought to achieve a meaningful characterisation of the produced flame-retardant TPU formulations. The compound development was then significantly accelerated and, at the same time, made more resource-saving.

Flame-retardant compounds with different formulations for three TPU base materials with different Shore hardness were manufactured. The goal was to define a specification sheet in which the material properties to be obtained were determined. The focus here was on the mechanical parameters, which were selected by the addition of flame retardants so that the influence on the mechanical parameters would be changed as little as possible. The rapid mass calorimeter was tested as a rapid method of fire behaviour analysis and all results were compared in detail with the corresponding measurements in the cone calorimeter. The accompanying investigation involved pyrolysis using thermoanalytical methods, such as thermogravimetric analysis coupled with the Fourier-transform infrared spectrometer, pyrolysis gas analysis and pyrolysis gas chromatography with mass spectrometry coupling.

It was shown that the rapid mass calorimeter is suitable to evaluate the achieved flame retardance of any flame-retardant TPU. The different TPU types displayed only few, albeit significant differences, e.g. in the mass loss of the individual decomposition stages of pyrolysis and in the mechanics. Some formulations with nitrogen-based flame retardants showed mechanics in the pure material area. However, some proved to be surprisingly similar in terms of fire behaviour and flame retardancy. Comparisons within material sets based on the same flame retardant concepts – i.e. modes of action – showed excellent correlations. 

The knowledge gained can now be used directly by companies in the development of flame retardant formulations for TPU. Furthermore, the use of halogen-free flame retardants as part of the research project demonstrated synergies between various flame retardants, simplifying the development in companies in this growth market. The two research institutes are also on hand for industry beyond this specific project with their broad expertise as partners in the field of flame-retardant plastics.

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About us

Company details

In collaboration with Fraunhofer LBF, companies in the chemical industry, particularly the plastics industry, rely on new, custom-designed plastics or plastic composites, along with the relevant processing technologies, to achieve desired product performance, necessary energy and resource savings or required lightweight design options. All the relevant skills for implementing such and similar requirements are available at Fraunhofer LBF, from chemistry and physics, material sciences and material technology to expertise in analytics, testing and modeling.

Only cutting-edge products with reliable and rapid access to innovative and high-performance materials can be offered competitively on the world market today. Tailored plastics, plastic additives, plastic composites and plastic processing technologies play a central role in meeting high global demands in the areas of mobility, energy, environment, communication, health, nutrition and safety. Plastics enable tremendous savings in resources and energy as well as a wide variety of options in lightweight design.

Particularly when they are fiber-reinforced, particle-filled, foamed or integrated into sandwich structures, plastics can withstand the highest degree of loading and absorb a great deal of energy. They can be supplemented with an additional range of functions such as protection from UV rays and the affects of weathering, reduced fire behavior, functions for the development of special optical properties, electric and thermal conductivity and with sensor and actuator functions.

All components relevant for the implementation of sophisticated plastic applications, running the scope from basic natural science disciplines such as chemistry and physics, material sciences and material technology in processing to expertise in analytics, testing and modeling, are united at a high level under one roof.

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Company data

Number of employees

101 - 500



Area of business
  • Raw materials, auxiliaries
  • Services for the plastics and rubber industries
Target groups
  • Plastic product manufacturing
  • Chemical industry
  • Machinery construction
  • Vehicle construction / aerospace