Method for producing a bioplastic granulate based on sunflower seed shells or sunflower seed hulls comprising the following steps: - providing ground sunflower seed shells/sunflower seed hull material, wherein the grain size is in the range of 3 mm or less, preferably in the range of 0.01 to 1 mm, more preferably in the range of 0.1 to 0.3 mm; - providing a plastic material; - compounding the sunflower seed shell/sunflowerseed hull material with the plastic material, wherein the compounding is preferably carried out in an extruder, preferably a twin-screw extruder, and the compounded material is knocked off at the end of the extruder section with a tool with the addition of water, wherein the water has a temperature of preferably more than 50 °C, preferably about 80 - 90 °C, in order to cool the compounded material, - wherein during compounding the compounding material is subjected to atmospheric degassing and/or vacuum degassing, the method being characterized in that - the compounded material is fed to a cooling and drying device, namely a spiral lift conveyor, in which the residence time of the compounding granulate in the atmosphere is adjusted for a predetermined period of time and the compounding granulate is fed to the spiral lift conveyor at a temperature of more than 100 °C, preferably about 130 °C, and the plastic granulate leave the spiral lift conveyor at a temperature below 100 °C, preferably about 50 - 70 °C, and - the shell material is dried down a first contribution prior to compounding, namely during grinding in a mill, wherein a second drying being carried out during compounding, in particular during atmospheric and/or vacuum degassing in the extruder, and a third drying being carried out in the spiral lift conveyor, i.e. the cooling and drying device, so that the bioplastic granulate produced has a residual moisture of significantly less than 1 %, preferably less than 0.1 %, preferably of approx. 0.05 %. - providing ground sunflower seed shells/sunflower seed hull material, wherein the grain size is in the range of 3 mm or less, preferably in the range of 0.01 to 1 mm, more preferably in the range of 0.1 to 0.3 mm; - providing a plastic material; - compounding the sunflower seed shell/sunflowerseed hull material with the plastic material, wherein the compounding is preferably carried out in an extruder, preferably a twin-screw extruder, and the compounded material is knocked off at the end of the extruder section with a tool with the addition of water, wherein the water has a temperature of preferably more than 50 °C, preferably about 80 - 90 °C, in order to cool the compounded material, - wherein during compounding the compounding material is subjected to atmospheric degassing and/or vacuum degassing, - the compounded material is fed to a cooling and drying device, namely a spiral lift conveyor, in which the residence time of the compounding granulate in the atmosphere is adjusted for a predetermined period of time and the compounding granulate is fed to the spiral lift conveyor at a temperature of more than 100 °C, preferably about 130 °C, and the plastic granulate leave the spiral lift conveyor at a temperature below 100 °C, preferably about 50 - 70 °C, and - the shell material is dried down a first contribution prior to compounding, namely during grinding in a mill, wherein a second drying being carried out during compounding, in particular during atmospheric and/or vacuum degassing in the extruder, and a third drying being carried out in the spiral lift conveyor, i.e. the cooling and drying device, so that the bioplastic granulate produced has a residual moisture of significantly less than 1 %, preferably less than 0.1 %, preferably of approx. 0.05 %.