With the continuous development of packaging industry, the demand for buffer packaging materials is growing up for the past decades. Expanded Polyethylene foam (EPE), Expanded polypropylene (EPP), expanded polystyrene (EPS) and foamed-polyvinyl alcohol (PVOH) are commonly used as buffer packaging materials. 

However, the degradable rate of traditional foaming material in the soil is very slow, causing the environment pollution. Many countries have issued the plastic ban to restrict the use of buffer packaging materials such as polyethylene (PE) and polypropylene (PP). The biodegradable materials show an increasing demand for the disposable packaging materials.