4KFLEX® is a brand of the KORRELS group. KORRELS has gained a great reputation by taking on the most diverse challenges in the field of plastic materials. With a lot of knowledge, translated into smart material solutions, a strong reputation was built. Resulting in customer-specific solutions, but the versatile portfolio also includes many standard compounds. We produce TPE SBS/SEBS TPV TPO compounds on request, i.e. customer-specific.

Highest elongation at break - In serial production since 2014 The use of TPU has proven itself especially in industrial series production for elastic products. For instance, TPU is used to produce seals for windows or cars. Grippers and tubes made of TPU are applied in automation. Orthopedics also benefit from this material to produce shoe soles or their components. With our ROLASERIT® TPU you are making the right choice as we allow easy processing of TPU. Low refresh rates in the range of the generated part volume, or the repeated processing of the material without refreshing, enable an extremely economical part production. In contrast to other TPU powders, ROLASERIT® TPU is not subject to excessive, disturbing smoke emission and laser decomposition of the material, which would lead to low-molecular decomposition products. A simple exposure of the cross sections is sufficient to achieve optimum product properties. Thus, our TPU can be used on all common laser sintering machines - a clear advantage for companies with limited machinery. Impressive elongation at break Components manufactured from this material show elongations at break partially well over 500 %, with results of over 200 - 300 % even in z-direction. In addition, excellent surface properties and high edge sharpness with good detail resolution can finally be achieved. Lowest Shore hardness on the market The hardness can be adjusted by process settings between 70 and 85 Shore A. In comparison, the material has one of the lowest Shore hardnesses on the market. All products are immediately ready for use without infiltration, pressure-tight up to 5 bar and can be easily dyed and chemically smoothed. Different color grades available ROLASERIT® TPU is available in natural, gray-black and as a blue/green luminescent variant.The gray-black as well as a special whitish variant (TPU-01-NIR) are suitable for use with fiber laser.

The disruptive potential of traceless® lies in our patent-pending technology — an innovative process that extracts natural polymers from agricultural plant residues. Instead of synthesizing new polymer molecules, we use those already created by nature. The result is a versatile portfolio of traceless® materials designed for rigid products, paper coatings, and flexible film applications. All materials are plastic-free, fully biobased, and naturally compostable. We primarily produce traceless® materials in standard granulate form. With thermoplastic properties, they are compatible with common industrial manufacturing techniques such as injection moulding and extrusion. Their easy integration into existing value chains enables industries to adopt our materials quickly — with minimal investment and operational effort.

Since the foundation of SKZ in 1961, our mission has been the further education of engineers and specialists in the plastics industry. We welcome over 13,000 participants annually at our 6 training locations in Germany, and many more at in-house training courses worldwide. A genuine practical component in the courses is a key quality feature for effective continuing education. The SKZ therefore operates its own technical centres at all of its training locations.

Leading provider of on-site thermoset training, combining theory and practical experience directly at the machine. We also offer on-site production support, getting your processes up and running, optimizing them, and training your team on the machines. Perfect for production relocations or series launches. Benefit from Ingo Schwarz's over 50 years of thermoset experience and Prof. Dr.-Ing. Sascha Englich's extensive expertise in plastics engineering. One- or two-day training courses for production staff, designers, quality control, and other departments. From the fundamentals of materials science to processing technologies, equipment, and the intricacies of individual topics. Training can be conducted in German, English, or Spanish. With on-site production support, we act as an extension of your team, assisting you directly in production where problems arise. This includes - troubleshooting and problem solving, - process setup and optimization - employee training. We have a special focus on reactive materials (thermosets) and high-performance thermoplastics.

Transport pallet from standard tools. Available in 4 standard sizes

TRIBOFORCE® is our product series of tribologically optimized compounds. The innovative materials improve the slide-friction behavior of mechanically and tribologically highly stressed parts, thus reducing wear and increasing the efficiency and service life of components that have to function smoothly under extreme conditions. In addition to minimizing friction losses at the expense of material and efficiency, the polymers counteract noise emissions caused by stick-slip effects, making them attractive materials for future markets such as e-mobility. The compounds do not require the use of PTFE/PFAS or additional lubrication.

High modulus, reduced coefficient of friction, very good abrasionresistance

Dry ice blasting: the new cleaning standard Oils, fats, silicones – contamination that occurs on machinery, turbines or other components in the industrial environment must be removed at regular intervals. Thorough cleaning reduces wear and increases quality. In addition, clean machines, tools or other parts have a positive effect on the company's success: consistently high productivity, with safe production processes and fewer plant failures.