Safe storage of recycling material is a critical task. With our Smart Storage solutions, Zeppelin Systems not only offers greater storage capacity compared to other options but also cost-effective and, above all, flexible concepts. Central to this are the Bolt-Tec silos, which are easy to install and adaptable for future developments. Intelligent discharge systems—such as vibrating floors or discharge screws—ensure that sufficient material is always available and that a controlled, constant bulk-material flow is maintained for further processing.

In a recycling facility, the efficiency of processing operations depends on the timely availability of feedstock and the smooth transfer of bulk materials between processing stages. Zeppelin Systems’ plants can reliably and gently convey high throughputs of up to 30 t/h over distances of up to 1 000 m. To ensure continuous material flow, we deploy sustainable conveying systems. Conveying distances and methods—such as pneumatic lean-phase conveying (Lean-Tec) or dense-phase conveying (Dense-Tec)—are tailored precisely to local conditions and the behavior of your materials.

For the dense-phase pneumatic transport of powders—like carbon black or silica—we offer various bypass systems that make slow, gentle conveying possible. All our conveying solutions guarantee operational safety, maximum cost-effectiveness, and product-preserving transport. In addition to protecting your product from external contamination, they also ensure dust-free conveying.

Sifters classify solids by particle size, density, or settling behavior. In the plastics industry, they are indispensable for removing contaminants, dust particles, fibers, and ‘angel hair’ from plastic granulates. Because recycled material often includes film remnants, Zeppelin Systems developed a dedicated film sifter. By screening out the film fraction in advance, you ensure process-reliable storage in the (mixing) silo. The separated film fraction is then compacted and fed to the extruder separately—guaranteeing the safety and purity of the recycled material.

At our Friedrichshafen technical center, users can test processes under realistic conditions to evaluate functionality and efficiency. Two large pilot plants for granulate, powder, and additives form the core of the facility, where trials are conducted at industrial scale. This enables determination of all relevant design parameters and the preparation of detailed test reports as the basis for plant conception. To achieve the best performance and efficiency for your process, the plant, its components, and operating modes are examined in full-scale tests until the optimum configuration is found. Innovative technologies such as Fresh-Tec® and Fluff-Tec® can also be trialed here. Data-driven decision support aids both design and operation.

Friedrichshafen also houses one of the world’s largest bulk-materials libraries, containing decades of our experts’ accumulated knowledge on handling bulk solids. Moreover, Zeppelin Systems maintains the largest global network of bulk-materials technical centers: in Kassel, mechanical process-engineering trials—especially mixing technology—for the plastics-processing and chemical industries are carried out; in Rödermark, the focus is on food-industry processes.