... venting performance Sheet Twin Screw Extruder Main Raw Materials:Starch, PCL, PBS, PLA, ethylene / acrylic acid ... , process additives etc. Edible corn starch is main material of Biodegradable starch-base materials, with degradation additives, through ... blending, polymerization then form new biodegradable starch-based materials, has excellent biodegradable properties and processing performance. SHJ ...