NATURE BIODEGRADABLE SHEET CONTAING STARCH AND METHOD FOR MANUFACTURING THE SAME

摘要

A natural degradable sheet is provided to ensure good productivity and workability, and excellent sanitation and safety and to prevent the environmental contamination. A natural degradable sheet is manufactured by the steps of: (S1) mixing starch, inorganic filler, plasticizer and lubricant in a high speed mixer and removing moisture; (S2) adding antioxidant, biologically degradable material and compatibilizer to the moisture-removed mixture, and mixing the mixture at high speed; (S3) manufacturing the mixture into the raw material pellet by using a twin extruder, wherein the twin extruder comprises a kneading part, at least one reverse direction screw and at least one vent hole for ejecting volatile materials; and (S4) processing the raw material pellet and optionally additive pellet into a sheet.