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Modern technical center

Material selection

The versatile range of applications of engineering plastics requires persistently new requirement profiles for the compounds used. The selection of the right material is of great importance and depends on many factors such as design, functionality and processability. High process and quality reliability is essential.

Process optimization

A compound must be optimally designed for the customer's process conditions. For process validation, we provide sample material of the selected product. Our experts also support you in processing and process optimization with technical expertise and are your contact from sampling to the series production process.


In addition to new developments based on trends and market needs, SITRAPLAS develops tailor-made plastic compounds for the specific requirements of its customers. With a database of over 2500 formulations, the prerequisite for effective and fast material development including specification is given. We provide our customers with sample plates free of charge, which are used for material selection.


The SITRAPLAS pilot plant has three twin-screw extruders and one single-screw extruder for filament production. The machinery of the pilot plant is supplemented by various pelletizing systems in wet and dry cutting, as well as an underwater pelletizer. All pelletizing processes are modularly adaptable to the extruders. Further peripheral components such as various metering units, liquid metering, side degassing and up to three side feeders can be variably assigned to the compounding lines.

The scale-up capability of the laboratory plants to the in-house production lines guarantees the best possible conversion of the development products into compounds ready for series production. All process data are digitally recorded and can be used for process analysis.


SITRAPLAS has been a partner of universities and networks in research projects for many years. These projects serve the permanent know-how transfer between the project partners for new and sustainable industrial applications.

Optimization of the efficiency of plastics, changes in the legal framework, and the use of plastics applications in new areas of application that have not yet been exploited are just some of the topics that motivate us. A particular focus of development and research at SITRAPLAS is the improvement of resource efficiency and the promotion of a circular economy in order to encourage the sustainable and economical use of plastics.

Excerpt programs, partners and research projects:


As a special service, we offer our customers and other interested parties the possibility of renting the pilot plant and laboratory for their own process engineering trials or formulation developments. In this case, we are happy to provide support with questions about compounding or with the laboratory evaluation of the results.

Do you need support in testing and analyzing plastics? Here, too, we can support you.


Maybachstr. 23
32257 Bünde

+49 5223 49 10 90


SITRAPLAS partners with you to produce individual resin compounds for state of the art product solution.


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