Filling systems are devices and materials used to fill empty spaces in packaging, thereby protecting goods from damage during transport. 
Various materials are used as fillers, such as air-filled PE films, differently processed paper, various types of polystyrene, cardboard shred, and more. Each filling material has different properties, making it suitable for different types of goods. Key factors in choosing the appropriate filling material include the size of the company, the number of packages shipped, the complexity of use, and the cleanliness of the filler. Many solutions are also highly demanding in terms of storage and transportation.