As experts in the area of polymer technology we accompany our international customers through the whole development process. We love and live science und would like to share this passion with you!

Lapp Engineering & Co. offers a reliable, inventive and trustworthy partnership – from the initial idea through the production of prototypes all the way to batch production of speciality or custom compounds.


Science of the Time

Since the foundation of the company in 2004 we have been meeting up with the ever increasing requirements of our customers and the polymer market – flexibly, efficiently and innovatively.

We are inspired by new challenges, trends and insights. Through our regular market analyses we can offer our customers efficient and professional assistance. To be able to fulfil the needs of our customers to full satisfaction we are continuously working to improve our quality standards.

An important part of the work is the close cooperation between the customer and the development team, with short decision paths and open communication, in order to efficiently bring the development of new compounds forwards.

A competitive price-performance ratio is as evident to us as the professional interaction with our partners and customers.

Our Services for you in the Field of Polymer Development

Material Development

  • Development of recipes for polymer compound

  • Optimization of existing compounds

  • Customized processing of small quantities of speciality compounds (up to 100 kg)

  • Production of extruded / injection molded samples and prototypes

  • Physical and chemical testing of samples

  • Fabrication of plastic granules for pre-production

Intellectual Property

  • Trademark protection
  • Patent search
  • Technology trends and -analysis
  • Patent monitoring
  • Patent applications
  • Network of international patent- and
    trademark lawyers

Project Managment and Consulting

  • Planning and execution of projects in the areas of polymer development, polymer processing, plastic- and polymer science.
  • Support in innovation projects
  • Cooperation with universities and education institutes in the areas of polymer development and processing techniques
  • Consulting in questions regarding processing techniques in the areas injection molding, extrusion and compounding
  • Support with quality questions as well as for the selection of suitable raw materials
  • Consulting in the fields of polymer science and plastic compounds

Compound Development by Lapp Engineering & Co.

Polymers are materials that are built up from many long chain molecules (macromolecules). These building blocks form the basis of polymer compounds. The process of compounding is described in detail below. Our goal is to develop a customized material through the combination of the optimal polymers and additives.

The Importance of Base Polymers

We chose base polymers that can best meet the requirements on the final compound. The selection is done based on the extensive experience of our development team combined with worldwide network of suppliers and a comprehensive materials database. Only high quality raw materials are used in order to be able to attain the high standards of our customers. The availability of the raw materials in the designated market is cleared at the start of the project.

Used Materials

  • Polyethylenes (PE)
  • Polypropylenes (PP)
  • Various other polyolefines
  • Ethylen-vinyl acetates (EVA)
  • Polyvinyl chlorides (PVC)
  • Polyamides (PA)
  • Polycarbonates (PC)
  • Thermoplastic elastomers (TPV, TPU, TPO)
  • and many more…

The Main Focus of our Polymer Development

  • Highly filled compounds with filling levels of more than 60%
  • HFFR (halogen free, flame retarded) compounds
  • E-beam crosslinkable compounds for outstanding heat stability
  • Electrically and thermally conductive materials
  • Plastic compounds as a substitute for metal

On Overview of the Processing Techniques in Polymer Development


During compounding different polymers are combined and mixed with selected fillers, additives and processing aids. The resulting compound is made up of at least two, but often up to twenty, different components. Through suitable combinations of materials, synergies are obtained giving the compound optimal properties, which could through one material alone not be attained.

The property profile of a compound can be modified over a broad range. Through the addition of specific additives, the resulting compound can be made more conductive, inexpensive, more flame resistant, crosslinkable, light- and heat resistant, increasingly processable, lubricated, or optically or haptically improved.

To this purpose we develop and optimize formulas for compounds based on specific customer requirements.


During extrusion the polymer melt is continuously pressed out through a die under high pressure. The resulting profile has the cross section of the nozzle opening and is called extrudate. During the extrusion, the following processes are taking place:

  • Feeding of material
  • Conveying
  • Melting
  • Degassing
  • Pressure build-up
  • Homogenization

Injection Molding

Injection molding is another processing method for plastic materials. During injection molding, the molten polymer gets pressed into a mold (tool) where it cools down to a solid shape. Through opening of the mould, the finished part can be released. Standard materials as well as speciality plastics can be used for injection molding.

Injection molding allows inexpensive and quick production of plastic parts in large quantities. By using particularly enduring molds with high service lives, millions of parts can be produced. Because of its efficiency and flexibility, injection molding is the most widespread production method for the serial production of plastic parts.

Our Laboratory Equipment for Polymer Development

Our Compounding Equipment

In our laboratory we use a BUSS MX 30 co-kneader, a compact small-scale compounding line. It’s versatile and efficient which makes it ideal for the use in research, development, process optimization and for the production of sample batches. The BUSS kneader is especially suitable for highly filled compounds as well as for materials sensitive to high temperature and shear stress.

The BUSS kneader offers a precise temperature control and with modularly changeable processing zones and screw the equipment is very user friendly. In addition, the dosage of fluids can be positioned wherever desired. The addition of polymer granulate, filler and additives is done through gravimetric dosage. This results in a stable process and a high quality compound.

The output rate is for laboratory use typically 5-25 kg/hour. Due to the modular screw the process can be arranged to exactly correspond to the later production units.

Our Technical Centre – Further Equipment

  • Laboratory extruder for the production of stripes and simple cable prototypes.
  • Injection molding machine for studies of filling ratios and the production of samples (i.e. dog bones) and prototypes.
  • Ovens and climatic chamber for aging process.
    Tensile tester equipped with a climate chamber for measurements of the mechanical properties in a temperature range from -80°C to +250°C.


We perform hardness measurements, rheological characterization of polymers, tensile- and pressure tests, density measurements and hot-set testing to investigate the level of crosslinking.

From the Lab to the World


Megatrend Transportation: Development of a HFFR Material for Train Cable for the Asian Market

In close cooperation with the customer Lapp Engineering & Co. developed a new customized compound with excellent processability and superior properties; halogenfree, crosslinkable and cost efficient. Thanks to this innovative new development our customer could strengthen its position in the railway business.


Recycling: Feasibility Study for the Recycling of High End Scrap Material

On behalf of the customer Lapp Engineering & Co. evaluated the possibility of re-using high end scrap material. How the scrap material could be re-integrated in the production process in an easy and straightforward way was investigated through compounding and testing.

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