BFS is an advanced aseptic processing technology that is typically used for filling & packaging of sterile liquid formulations. It is an automated manufacturing process by which plastic containers are, in a continuous operation, get blow-formed, filled, & sealed. It takes place in a sterile, enclosed area inside a machine, without human intervention, & thus can be used to aseptically manufacture sterile pharmaceutical products. 

Every BFS process begins with the extrusion of a sterile polymer parison directly within the system. Once complete, the container can then be moulded, filled, sealed, & demoulded, all in a single process, in a self-contained system, & without the need for any external intervention.