PP Non-woven Fabric Recycled Granulation Screw Barrel

The screw and barrel design for PP non-woven fabric recycled granulation addresses a distinct challenge: the material is fluffy, bulky, and contaminated with dust, inks, and degraded polymers. Unlike virgin PP, it requires aggressive feeding, efficient degassing, and strong mixing to restore melt quality without thermal degradation.

The screw features deep feed channels and a grooved feeding zone to handle low-bulk-density fabric flakes, with a gradual compression ratio for smooth melting. The barrel includes multiple degassing ports to remove volatiles, and both components are built from wear-resistant alloys to withstand abrasion from fiber residues and contaminants.

This system is widely used to produce recycled PP pellets for non-woven fabrics, geo-textiles, agricultural covers, packaging straps, and low-grade molded parts. With robust degassing and mixing, the equipment delivers consistent pellet quality while maximizing the use of polypropylene waste.