Preparing calibrated plastic composite agroaggregate comprises introducing sulfite salt solution in extrusion device filled with vegetable protein material and water, adjusting amount of water, and subjecting to pressure

摘要

Preparing stable and calibrated plastic composite agroaggregate (5) comprises: introducing a sulfite salt solution in an extrusion device previously filled in vegetable protein material and water, where the proportion of sulfite (SO3 ->) is 1-10 g for 100 g of proteins; adjusting the amount of water to obtain a mixture comprising 10-40% of water; carrying mixture to a temperature of 90-150oC; and conveying the mixture in the extrusion device where the mixture undergoes mixing operations under shear, pressure, flowing and forming the material then cutting into a desired calibration. An independent claim is included for the stable and calibrated plastic composite agroaggregates obtained by the process, comprising at least 30% of a thermoplastic matrix of polypeptide nature and at least 30% of a fibrous reinforcement of lignocellulosic nature.