Foam pelletizer

Working Principle and Core Process of Foam Pelletizing Machine

• Crushing pretreatment

Waste foam (such as foam boxes and packaging materials) is first shredded into small pieces by a shredder to facilitate subsequent melting treatment.

• melt extrusion

The crushed foam enters the heated screw extruder, where it is compressed, melted, and degassed under high temperature (180-250°C) and screw rotation, forming a uniform molten plastic.

• water-cooled pelletizer

Melted plastic is extruded through a die head into strips, rapidly solidified in a cooling water tank, cut into 2-5 mm diameter pellets by a pelletizer, and finally turned into reusable plastic raw materials.

Advantages of plastic granulating machine equipment

Significant environmental benefits

• Reduce soil and air pollution caused by the incineration or landfill disposal of waste foam.
• Reduce dependence on primary resources such as petroleum, with each ton of recycled pellets saving approximately 1.5 tons of crude oil.

High production efficiency

• The single machine can process 1-5 tons per day, with a high degree of automation and low labor costs.
• The melt extrusion process is highly sealed, effectively preventing the leakage of harmful gases.

Excellent particle quality

• Through precise temperature control and screw design, uniform particle density and stable melt index are ensured, making it suitable for direct use in injection molding, blow molding, and other processes.

Wide range of applications

• Can process various foam materials such as EPS, XPS, and EPP, and supports customized die heads to produce particles of different specifications.

Core application areas of pelletizers

Granulators are widely used in the following fields by converting materials such as plastic and rubber into granules:

• Plastic recycling and regeneration

Processing waste foam, plastic bottles, scrap materials, etc., into recycled pellets for use in the production of daily necessities, pipes, and modified plastic raw materials, thereby reducing dependence on virgin plastic.

• Plastic product manufacturing

Processing virgin resins (such as PE, PP, PVC) into standard pellets as raw materials for injection molding, blow molding, and other processes to produce plastic bags, toys, automotive parts, etc.

• Chemical Engineering and New Materials

Production of rubber granules (for sports fields and soundproofing materials), engineering plastics (such as nylon and polycarbonate), and biodegradable plastics (such as PLA) to meet high-end manufacturing needs.

• Building materials

Foam particles are mixed with cement to make lightweight insulation boards, or processed into PVC/PE particles to produce pipes and profiles, contributing to green building.

• Agricultural environmental protection

Manufacturing biodegradable mulch film and drip irrigation tape from recycled pellets reduces agricultural pollution; developing environmentally friendly packaging materials through biomass co-blending and pelletization.

• Packaging Logistics

Recycled granules are used to produce bubble wrap, cushioning packaging, and logistics pallets, forming a closed loop of “recycling and remanufacturing” and reducing logistics costs.

• Resource Recycling Innovation

Recycle synthetic fiber clothing and plastic circuit board substrates, and granulate them to recycle textile and electronic waste. Customize 3D printing filament materials to promote personalized manufacturing.

Important considerations when purchasing

• Material adaptability

Select the machine type based on the type of foam to be processed (e.g., EPS, PE, PP).

• production demand

Single-screw models have a production capacity of approximately 50-200 kg/h, while twin-screw models can reach 300-1000 kg/h.

• Energy consumption and efficiency:

Prioritize energy-efficient motors and high-efficiency screw designs.

• After-sales service:

Select a reliable manufacturer that provides technical support and spare parts.

As the core equipment for recycling waste foam, foam pelletizers not only solve the problem of white pollution, but also create economic value through resource regeneration. With technological iteration and stricter environmental protection policies, the market prospects for foam pelletizers will continue to expand, becoming a key support for sustainable development in the plastics industry.