Principles And Performance Requirements Of Transport Cushioning Materials

When transport cushioning materials are subjected to external forces, they absorb impact energy through deformation, preventing product damage. This mechanism is closely related to the material's viscoelasticity; viscoelastic materials, when subjected to stress, can both store energy and dissipate some of it as heat through internal friction.

For foamed cushioning materials, the molding mechanism affects the final performance. Plant fiber cushioning materials rely on water bridging forces and cohesive forces generated by fiber bending to connect fibers and form a three-dimensional network structure. Bubble nucleation is the key stage determining the structure of the foamed material.

Good resilience (restoration) is a core requirement, ensuring that the packaged contents continue to be protected under repeated stress. The material must be insensitive to climatic conditions such as humidity and temperature to maintain stable performance, and should not absorb moisture or contain corrosive components to avoid promoting corrosion of the packaged contents. The use of packaging cushioning materials should prioritize effectiveness, simplicity, environmental compatibility, and cost-effectiveness.