With the growing concern for the environment and the sustainable development, the society are buzzing with green activity, biodegradable materials has been the main stream of word’s sustainable development. According to our years’ experience on extruder and the related research, we have developed a brand new process line for producing the biodegradable materials which can be used as packaging and cushion materials, also can be used for making the toy.  The process line use corn starch as main material, the final products is non-toxic and no harm to human or the environment.