Compounding is the process of melting a polymer and mixing it with additives, fillers, colour or other polymers to produce granules with defined properties. It is normally done on a twin-screw extruder, which mixes more intensively than a simple recycling extruder.
For recycled plastics, compounding is how variable waste becomes a specified grade. Blending different recycled lots evens out melt flow, while impact modifiers, stabilisers or mineral fillers tune stiffness, toughness and heat resistance. This is essential for demanding uses such as automotive parts, where rPP compounds must meet a precise specification batch after batch.
CII Sustainable Plastic Packaging Awards 2026
Lucro took home the Excellence award for Incorporation of Recycled Content in both rigid and flexible packaging at the Confederation of Indian Industry’s Sustainable Plastic Packaging Awards 2026:
Post-consumer plastic, back on the shelf as bottles and pouches. The jury noticed.
