Feb 06, 2023
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XPS Foam Recycling Pelletizing Line
XPS foam recycling pelletizing line is special waste recycling equipment supporting XPS extrusion board factories. It is designed for XPS offcuts, scraps from roughening & grooving process, rejected boards and post-construction waste XPS insulation boards. It is also compatible with EPS foam waste recycling.
XPS foam has low density and residual blowing agents (HFC / CO₂) trapped inside. Ordinary pelletizers easily produce porous pellets with excessive volatile content. This line adopts crushing, compulsive feeding, two-stage extrusion and multi-stage vacuum degassing to fully remove foam gas, residual blowing agents and moisture. Clean and dense PS regrind pellets are obtained after melt filtration. Recycled pellets can be directly blended back into XPS production line, or used for PS profiles, photo frames, decorative parts and injection molded products. It realizes closed-loop recycling, cuts raw material cost and meets environmental requirements.
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Video Of XPS Foam Recycling Pelletizing Line
Applicable material: HFC foamed XPS, CO₂ foamed XPS, EPS foam scraps
Final product: PS recycled pellets with low bubbles and low volatile content
Key Advantages
1. Specially designed for XPS, strong vacuum degassing system
Dual-stage vacuum venting removes residual blowing agent and moisture trapped in XPS foam, effectively solving porous pellets and high volatile issues. Suitable for both HFC and CO₂ XPS waste.
2. Compulsive compaction feeding, solves feeding difficulty of light foam*
XPS foam is light and fluffy, easy to bridge. The compaction feeding unit delivers stable continuous feeding without material blocking or backflow.
3. Multi-purpose, compatible with XPS & EPS
Switch parameters to process XPS extruded board and EPS packaging foam, ideal for factories producing XPS while recycling EPS.
4. Cost saving and closed-loop waste reuse
Offcuts and scraps from trimming, roughening and grooving can be pelletized on-site and reused for XPS production, reducing virgin PS consumption and improving profit, also complying with solid waste regulations.
5. Melt filtration for stable pellet quality
Non-stop hydraulic screen changer intercepts sand, mortar, aluminum foil and other impurities, pellets keep high purity and will not cause defects when blended back into XPS production.
6. High automation & easy operation
PLC centralized control, linked crushing, feeding, extrusion, pelletizing, cooling and storage. One operator is enough, with recipe storage and fault alarm.
7. Optional pelletizing method
Water ring hot cutting or strand water cooling. Water ring for high-capacity continuous production; strand cutting for small batches and strict quality inspection.
8. Energy saving & wear-resistant screw
Screw and barrel are made of 38CrMoAl with nitriding treatment for corrosion and wear resistance. Zoned temperature control prevents material carbonization for long-time stable running.
Main Components
1. Crusher: crush large XPS boards into uniform fragments
2. Conveyor & compulsive compaction feeder: compress fluffy foam and stable feeding
3. 1st stage single screw extruder: melting, primary compaction and first vacuum degassing
4. 2nd stage single screw extruder (two-stage system): homogenization and deep secondary vacuum removal of residual blowing agents
5. Hydraulic non-stop screen changer: melt filtration
6. Die head & pelletizing unit: water ring cutter / strand die
7. Cooling system: water tank, centrifugal dewatering & drying machine
8. Finished pellet silo and pneumatic conveying system
9. PLC control cabinet, temperature control & frequency conversion system, vacuum unit
10. Dust collection system for crushing section
Production Process
XPS waste → crushing → conveying → compaction feeding → 1st stage extrusion & primary degassing → 2nd stage extrusion & deep vacuum degassing → melt filtration → extrusion through die → water ring cutting / strand cooling → dewatering & drying → pellet silo storage → packaging for reuse
Supply Description
We can supply separate compaction feeder or extruder unit, or full turnkey recycling line. Custom capacity, voltage adaptation and CE certification are available. The line can be connected after XPS production line or roughening & grooving machine for on-site scrap recovery. Overseas installation guidance, commissioning and process technical support are provided.
Samples and Applications
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