The Department of Polymer Engineering of the Budapest University of Technology and Economics is one of the most important educational and research institutes in Hungary when it comes to polymers and polymer composites. The two research groups of the Hungarian Academy of Sciences (MTA) operating in the Department also show the research potential of the department. Our technological and laboratory facilities for the development, production and testing of polymers and their composites are also outstanding in an international context. The research, development and innovation activities at our Department have been recognized with the MTA Centre of Excellence and NKFIH TOP50 Excellent Research Infrastructure awards. We are actively engaged in research, development and innovation activities in most areas of polymer engineering: • Material development and compounding of thermoplastic polymers/biopolymers, and processability tests with pilot-scale extrusion equipment. • The recycling of thermoplastic polymers and rubber materials, as well as the compostability of biopolymers in the spirit of the circular economy. • Examination of the morphology of polymers, thermal analysis, exploration of material structure–property relationships. Development, modelling and testing of functional polymers. • Development of lightweight, intelligent, multifunctional polymer composites and coatings. Development and recycling of polymer composites from renewable sources, as well as recyclable-by-design composites. • Practical applications of Industry 4.0 in mass production. Technological integration between injection moulding and 3D printing. Development of T-RTM technology. • Development of customizable polymer and metal-polymer implants and medical devices. • Development of polymer-based energy cell components. • Material and technology development of elastomers, and polymer/biopolymer foams. • Development of polymer packaging systems.