Modern solid propellants emerged in the early 1940s with the invention of composite propellants, and they have been developed ever since with the great surge of development progress. The processing technique with two-roll milling showed that grain production is possible from TPE binder system propellants, which contain higher levels of solids. Propellant compositions using this binder system can accept up to 90% filler, depending on the type of process taking place. This composition blends with a combination of customised propellant cross-section geometry and exposed burning surface, enabling the design of different types of rocket motors. Modular grain technology applies to both small and large calibres (larger than 500 mm). Since its very beginning, EDePro has been fostering its technological development, and it is now one of the biggest and most reliable producers in Southeastern Europe.
