Agglomerate Type Pelletizing Line Overview
Loose plastic film is difficult to feed directly into an extruder. It takes up considerable space, moves unevenly through conventional feeding systems, and can interrupt material flow during recycling. The IVIMA Agglomerate Type Pelletizing Line addresses this problem by combining material densification and extrusion within one recycling system. The agglomerator cuts and compacts lightweight plastic waste before transferring it to a single-screw extruder for melting and pellet production.
This arrangement is suitable for pre-crushed LDPE and HDPE films, PP woven bags, raffia scraps, and other compatible soft thermoplastic materials. It reduces the handling difficulties associated with low-bulk-density waste and supports a more consistent supply of material to the extrusion screw. The line is available in six A-SJ models, with nominal processing capacities ranging from 150 to 1,000 kg/h. Water-ring die-face cutting and strand cutting configurations are available for different production requirements. For recycling plants processing flexible plastic waste, the integrated arrangement offers a practical way to combine pre-compaction, extrusion, and pelletizing in one production line.
Suitable Materials for Pelletizing
LDPE and HDPE Film Scrap
LDPE packaging film, HDPE film waste, industrial film offcuts, and prepared agricultural film can be processed using a suitable line configuration. Thin film tends to have low bulk density, making it difficult to feed evenly into an extruder. The agglomerator cuts and compacts the material before extrusion, reducing the risk of irregular feeding. Post-consumer film should undergo appropriate sorting, washing, and drying before pelletizing. Clean, relatively uniform production scrap generally requires less preparation.
PP Woven Bags and Raffia
PP woven bags, raffia strands, sack offcuts, and similar polypropylene waste are also suitable recycling materials. These materials are lightweight and may have irregular shapes or long, flexible strands. Direct screw feeding can be inconsistent without suitable size reduction and densification. The agglomerator prepares the material for extrusion, allowing the pelletizing line to convert it into recycled PP granules. Printed, coated, or heavily contaminated woven bags may require additional preparation to achieve the desired pellet quality.
Soft Plastic Packaging Waste
Flexible plastic packaging, film trimmings, and compatible soft thermoplastic production waste can also be recycled. Material identification is important because different polymers require different extrusion temperatures and processing conditions. Multilayer packaging containing incompatible polymers, aluminum foil, or other non-plastic layers may not be suitable for conventional PE or PP pelletizing without additional separation.
Previously Densified Plastic Scrap
The extrusion system can also process suitable pre-agglomerated or densified recycling materials when their particle size, composition, and feeding characteristics match the selected equipment. For factories already using a separate agglomerator, this provides another potential material preparation arrangement. The required feeding configuration should be selected according to the physical condition of the incoming scrap.
Key Advantages
Improved Feeding of Lightweight Plastics
Loose PE film and PP woven waste can bridge, accumulate, or feed irregularly when introduced directly into an extrusion system. The integrated agglomerator cuts and densifies the material before extrusion. This creates a more manageable feedstock and helps maintain a steadier material supply. Actual feeding performance depends on the material condition and the selected operating parameters.
Integrated Agglomeration and Extrusion
The agglomerator and single-screw extruder work together as part of the same recycling line. This arrangement reduces the need to move material between separate processing machines and can limit handling losses during transfer. It also helps factories organize material preparation and pelletizing within a coordinated production process.
Consistent feeding allows the extrusion screw to operate under more predictable processing conditions. Combined with a suitable screw configuration and temperature settings, this helps control material melting and melt pressure. Stable operating conditions are important for producing pellets with a more consistent shape and size.
Flexible Pellet Cutting Options
Different recycling operations may require different pelletizing methods. Water-ring die-face cutting offers a way to cut pellets directly at the die, while strand cutting uses cooled extruded strands before granulation. The preferred arrangement depends on polymer characteristics, melt behavior, expected output, and downstream handling requirements.
Continuous Industrial Recycling
The line is designed for industrial recycling operations that process flexible plastic waste on a continuous production basis. Material preparation, feed consistency, temperature control, filtration requirements, and regular maintenance all influence operating stability. When these conditions are properly managed, the equipment can support sustained recycling production across different capacity ranges.
