Potsdam, Germany – Bioplastics have long been viewed as a key solution in the transition away from conventional plastics. They reduce dependence on fossil resources, conserve materials, and lower CO₂ emissions. Yet for widespread industrial adoption, they must also be sustainable, easy to process, and compatible with standard machinery. This is the focus of the Fraunhofer Institute for Applied Polymer Research IAP, which will showcase its latest developments in bio-based and biodegradable plastics at K 2025, the leading international trade fair for plastics and rubber.
Event Details:
Fraunhofer joint booth | Hall 7, Stand SC05
October 8–15, 2025
As part of the RUBIO project (Regional Entrepreneurial Alliance for Technical Bioplastics in Central Germany), Fraunhofer IAP has developed around 20 new types of polybutylene succinate (PBS) at pilot scale. Derived from plant-based residues, these PBS types can be processed through injection molding, extrusion, blow molding, thermoforming, spinning, deep drawing, and film processes. Their versatility makes them suitable for packaging, textiles, consumer goods, and more.
Researchers have successfully scaled PBS production from laboratory synthesis to 100-kg scale, producing a total of three tons of PBS. By adjusting synthesis parameters, they achieved both linear and branched polymer structures, each optimized for specific processes. Importantly, the melt stability has been enhanced, enabling the PBS to withstand temperatures above 200°C—a key milestone for industrial use.
Working with partners such as Sauer GmbH & Co. KG and Gramß GmbH Kunststoffverarbeitung, Fraunhofer IAP produced initial market-ready applications: a sports water bottle and its matching cap, created via blow molding and injection molding. Industrial tests confirmed that the new PBS types can be processed efficiently, reliably, and with strong mechanical properties using standard equipment.
Looking ahead, Dr. Jens Balko, Head of the Processing Pilot Plant for Biopolymers Schwarzheide, emphasized:
“As a bio-based and recyclable material, PBS will be a real game changer on the bioplastics market in the near future and will play a decisive role in the circular economy of plastics. Thanks to its appealing feel and soft to medium hardness, PBS is a genuine alternative for products that still use polyethylene today.”
PBS can be produced using regional plant-based residues. However, further innovation and partnerships are needed to optimize the extraction of succinic acid, a key precursor in PBS synthesis.
Fraunhofer IAP invites attendees to explore its PBS innovations and processing exhibits at K 2025, Hall 7 / Stand SC05.
