METHOD OF PREPARING BIOPLASTICS， BIOPLASTICS PAREPARED THEREBY， AND FILM， SHEET OR CONTAINER USING THE SAME

The present invention， (Step 1) a low-temperature grinding step of grinding non-edible plants， polymers， binders and additives at high speed at a temperature of 80 to 150 ; (Step 2) a cold crushing step of pulverizing the first low-temperature pulverized powder at high speed at a temperature of -20 to 0°C; And (Step 3) an extrusion step of supplying the second cold-crushed powder to a twin-screw extruder having a length-diameter ratio (LD ratio) of 60 or more at a constant rate and extruding at 130 to 170°C; including， non-edible plants and polymers It relates to a method for producing a bioplastic that is extruded after compounding. According to the present invention， bioplastics can be prepared by mixing and complexing non-edible plants and polymers without deteriorating physical properties including the strength of the polymer while preventing degeneration due to carbonization and oxidation of non-edible plants. This excellent eco-friendly food packaging container can be provided.