Loose filling material has suitability and convenience in packing operation, and can be used for packaging of products with varied shape, size and dimension. Packaging protection function of the material is determined by its loading ability, cushioning packaging property, and the ability of proper securing products inside the container. Tests of static compression, dynamic impact, and degree of migration were carried out to four different types of loose filling material. The packaging properties of the loose filling materials were analyzed and compared with moulded pulp loose filling material. The influence of single unit structure and shape of loose filling material on cushioning property and securing function was explained.