Envases Plásticos de Aragón (EPA) has consolidated a new investment in adapting its facilities at its production center in Sariñena, Huesca, in order to be certified as a “clean room”. Specifically, it has redesigned its production spaces and has incorporated special closure systems in each process. The spaces for production use special double closing systems SAS (Safety Access System) in the pedestrian doors and in the entrance and exit of material, which minimize the risk of polluting particles entering the air. The transport of the coils from the cutting process to the dispatch area is also carried out through a special transfer system that avoids any contamination.