Recyclable Structural PET Foam Core for Marine, Wind & Transportation
100% recyclable thermoplastic core material
Four engineered series for different industries
Monthly capacity: 10,000 m³ stable supply
DNV / EN certified grades available
What is PET foam core？
PET foam core is a closed-cell thermoplastic structural foam. It possesses excellent mechanical properties and is commonly used as a structural core material. It significantly reduces the weight of a structure whilst enhancing its strength and rigidity. It is also environmentally friendly and recyclable, making it a more eco-friendly option compared to structural core materials such as PVC. It is compatible with a variety of resins, including unsaturated and epoxy resins, and offers excellent processability.
With a maximum temperature resistance of 150°C, it is suitable for a range of processes, including hand lay-up and vacuum infusion, and is resistant to deformation at higher temperatures.
It is an ideal core material for sandwich composite structures used in marine, transportation, wind energy, and industrial applications.
Jloncell PET Foam Range
Jloncell PET Standard Series
Density range: 60-300kg/m3
Standard PET blocks are produced using extrusion and welding processes, and are then processed into customised sheets in accordance with customer specifications.
Jloncell PET FR Series
100/150/200/250
Flame-retardant additives are incorporated into the formulation to achieve a certain level of flame retardancy.
It is widely used in sectors such as rail transport, construction and home furnishings.
Jloncell PET Sanded Series
When laminating PET foam to CFRT skin, the surface must be perfectly smooth .
The surface of standard-type panels can be sanded to achieve a premiun surface .
Sanding reduces resin absorption; if customer has specific weight requirements, sanding is recommended.
Jloncell PET Seal Series
This series undergoes a single high-temperature heat-sealing process at 280°C on the surface of standard PET sheets; the sealing process significantly reduces resin absorption. PET foam used in wind power applications often requires pore sealing. The standard density is 100 kg/m³ and it is DNV-certified.
Specification of PET Foam
| Test Item | Standard | Unit | Value | JLON Cell 60 | JLON Cell 80 | JLON Cell 100 | JLON Cell 150 | JLON Cell 200 | JLON Cell 250 | JLON Cell 300 |
| Density | ISO845 | kg/m3 | AVG INTERVAL | 65 60-70 | 80 80-90 | 105 100-110 | 150 150-160 | 200 190-210 | 250 235-260 | 300 285-315 |
| Compressive Strength | ISO844 | MPa | AVG MIN | 0.75 0.65 | 0.95 0.80 | 1.20 1.10 | 2.40 2.20 | 3.90 3.40 | 5.20 4.80 | 6.80 6.30 |
| Compression Modulus | ISO844 | MPa | AVG MIN | 60 50 | 80 70 | 100 90 | 140 125 | 200 170 | 235 210 | 320 300 |
| Tensile Strength | ASTMC297 | MPa | AVG MIN | 1.30 1.10 | 1.50 1.30 | 1.80 1.60 | 2.50 2.20 | 3.20 2.60 | 4.00 3.60 | 4.50 4.00 |
| Tensile Modulus | ASTMC297 | MPa | AVG MIN | 70 60 | 90 80 | 110 100 | 160 130 | 210 180 | 275 250 | 330 300 |
| Shear Strength | ISO1922 | MPa | AVG MIN | 0.55 0.45 | 0.70 0.60 | 0.80 0.75 | 1.25 1.05 | 1.70 1.50 | 2.05 1.80 | 2.30 2.00 |
| Shear Modulus | ISO1922 | MPa | AVG MIN | 15.0 13.0 | 19.0 17.0 | 23.0 21.0 | 35.0 31.0 | 51.0 48.0 | 70.0 60.0 | 95 85 |
Finishing & Kitting
JLON provides custom processing services for PET foam core according to your molding process and project requirements.
Available for PET Foam Core:
Plain （Flat）Sheets Scrim-backed Foam
Double Cut Slotted Sheets
Perforated Sheets Slotted & Perforated Sheets
CNC Cutting Custom Kit Cutting
Why Choose PET Foam Core?
Excellent Mechanical Properties
PET foam offers high compressive strength, shear strength, and stiffness, making it suitable for load-bearing composite structures.
Sustainable and Recyclable
Environmentally friendly choice for manufacturers seeking to reduce their carbon footprint.
Outstanding Temperature Resistance
PET foam can withstand higher processing temperatures, making it ideal for: Vacuum infusion / RTM (Resin Transfer Molding) / Compression molding / Thermoplastic composite processing
Good Resin Compatibility
PET foam is compatible with Polyester resin/Vinyl ester resin/Epoxy resin/ Phenolic resin
Moisture and Chemical Resistance
The closed-cell structure prevents water ingress and provides good resistance to chemicals and environmental exposure, ensuring long-term durability in marine and outdoor applications.
Cost-Effective Alternative
PET foam often offers a competitive price-performance ratio compared with PMI and SAN foams while providing superior sustainability benefits. It is an economical solution for large-volume composite production.Widely used as an alternative to PVC, SAN and PMI foam in large-scale industrial production
Easy Processing
PET foam can be easily:Cut / CNC machined / Thermoformed / Grooved and perforated
This improves manufacturing efficiency and reduces production costs.
Marine / Shipbuilding
Recommended: 60–130 kg/m³
Focus: fatigue resistance, water resistance, DNV grades
Wind Energy
Recommended: 100–200 kg/m³
Focus: fatigue loading, infusion compatibility, sealing requirement
Vehicle & Transportation
Recommended: 60–150 kg/m³
Focus: fire performance (EN45545), lightweight efficiency
Construction
Recommended: 80–200 kg/m³
Focus: thermal insulation + structural support
FAQ of PET Foam Core
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What is the maximum temperature that PET foam core can withstand?
140-150 ℃
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What is the thinnest thickness available for PET foam core?
3mm
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Why does PET exhibit anisotropic properties?
PET foam is anisotropic, exhibiting high strength parallel to the weld line and low strength perpendicular to it.
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What is the difference between PET, PVC, and PMI foam?
PET offers better heat resistance and fatigue life than PVC, at a lower cost than PMI. PET is also fully recyclable.
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Can PET foam be used with prepreg?
Yes. High-density PET grades (≥130 kg/m³) withstand typical prepreg cure cycles (120–130°C).
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Is PET foam compatible with infusion?
Yes, our closed-cell PET foam has low resin uptake and can be used with spiral grooves or perforations.
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Do you offer sample kits?
Yes. Free PET, PVC, and PMI sample blocks available for testing.
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What is the standard delivery time?
This depends on the order quantity and whether it is the peak or off-peak season.Typically, it takes around 10 days.
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Are there any other specific applications for PET foam core?
PET foam core can be used to manufacture moulds and swimming pools (as an alternative to PP honeycomb)
It is used as a structural core and formwork for lamination in fiberglass
swimming pool construction.