# PET Foam Sheet 2026: Complete Guide for Construction, Furniture & Packaging **By kevin c** · 2026-08-21 > PET foam sheet is a rigid closed-cell foam board made from polyethylene terephthalate (PET) with a typical density range of 250–450 kg/m³, designed for applications requiring light weight, water resistance, and full recyclability. The 2026 European market shows a **52% YoY growth in PET foam adoption** as manufacturers shift away from PVC-based foam boards for ESG compliance. For wholesale buyers, furniture manufacturers, and construction project managers, [BIGBAHN PET Foam Board](https://www.bigbahn.de/pages/pet-foam-board) offers factory-direct pricing with custom thickness (5–50 mm), sheet dimensions, and OEM/ODM services from MOQ 200 m². ![Bigbahn 15mm PET Foam Board OEM or ODM supplier manufacturing service](https://cdn.shopify.com/s/files/1/0746/2951/3390/files/15mm_PET_Foam_Board_for_RV_1_43e525d5-edaa-435b-b7b8-ec7342d5dbb7.jpg?v=1784077143) ## What Is PET Foam Sheet and How Does It Differ from PVC, XPS, and EPS Foam PET foam sheet is a category of **rigid thermoplastic foam panel** manufactured by extruding or batch-foaming polyethylene terephthalate (PET) resin to create a closed-cell structure. The result is a lightweight, dimensionally stable panel with consistent density and isotropic mechanical properties. ### **Key Engineering Properties of PET Foam**: 1. **Closed-Cell Structure**: Cells are sealed (not interconnected), preventing water absorption and providing consistent insulation value over time 1. **Density Range**: 250–450 kg/m³ (configurable by foaming ratio and additives) 1. **Operating Temperature**: -40°C to +80°C continuous (some grades reach +100°C) 1. **Compressive Strength**: 0.5–2.5 MPa depending on density 1. **Water Absorption**: <1% by volume (essentially waterproof) 1. **Recyclability**: 100% recyclable within PET recycling stream The Bigbahn [PET Foam Board collection](https://www.bigbahn.de/pages/pet-foam-board) supports custom specifications for OEM customers across construction, furniture, packaging, and signage applications. ![Bigbahn 15mm PET Foam Board OEM or ODM supplier manufacturing service](https://cdn.shopify.com/s/files/1/0746/2951/3390/files/15mm_PET_Foam_Board_for_RV_2.jpg?v=1784077142) ### **Critical Comparison: PET vs Other Foam Boards**: Comparison Criterion PET Foam PVC Foam XPS Foam EPS Foam **Base Material** Polyethylene terephthalate Polyvinyl chloride Extruded polystyrene Expanded polystyrene **Density Range (kg/m³)** 250–450 400–700 25–50 10–35 **Water Absorption** <1% <1% <1% 2–4% **Recyclability** 100% PET stream Difficult (chlorine content) Difficult (XPS chemical structure) Limited (downcycle only) **Food Contact Safety** FDA + EU approved Restricted (phthalates) Restricted (styrene) Restricted (styrene) **Compressive Strength** 0.5–2.5 MPa 1.5–5.0 MPa 0.1–0.7 MPa 0.05–0.2 MPa **Processing Toxins** None HCl fumes when burned Styrene release Styrene release **Cost (EUR/m² for 10 mm)** 12–25 8–18 5–12 3–8 **ESG Compliance Trend** Strongly favored Phase-out risk Phase-out risk Phase-out risk **Best For** Construction, furniture, packaging Signage, short-term Insulation Disposable packaging ### **Why the shift to PET foam in 2026**: - **EU SUP Directive**: Single-Use Plastics Directive targets PVC and polystyrene foam - **Cradle to Cradle Certified**: PET foam boards achieve Gold/Platinum status - **Carbon-Neutral Manufacturing**: PET can be sourced from recycled bottles (rPET) for closed-loop production - **Building Certifications**: LEED v4.1 and BREEAM reward PET foam in material credits ## Physical and Mechanical Properties of PET Foam Sheet / PET  Understanding PET foam's engineering specifications is critical for selecting the right grade for each application. Below is a detailed breakdown: ### Density and Mechanical Properties Property Test Method 250 kg/m³ 320 kg/m³ 400 kg/m³ 450 kg/m³ Compressive Strength ASTM D1621 0.5 MPa 0.9 MPa 1.4 MPa 2.0 MPa Tensile Strength ASTM D1623 0.7 MPa 1.2 MPa 1.8 MPa 2.5 MPa Flexural Strength ASTM D790 1.0 MPa 1.6 MPa 2.4 MPa 3.2 MPa Shear Strength ASTM C273 0.4 MPa 0.6 MPa 0.9 MPa 1.3 MPa Elongation at Break ASTM D1623 8% 6% 5% 4% Water Absorption (24h) ISO 2896 <1% <1% <1% <1% Thermal Conductivity ASTM C518 0.045 W/mK 0.040 W/mK 0.038 W/mK 0.036 W/mK Dimensional Stability ISO 2796 <0.5% <0.5% <0.5% <0.5% ### ### Thermal and Chemical Properties Property Value Notes Operating Temperature Range \-40°C to +80°C Continuous Melting Point 240–260°C Processing temp Glass Transition 70–80°C Softening begins UV Resistance Moderate UV-stabilized grades available Chemical Resistance Excellent vs acids, alkalis Limited vs strong solvents Flame Rating B2 (DIN 4102) / E (EN 13501-1) FR grades available ### ### Sustainability Profile Sustainability Factor PET Foam PVC Foam Recycled Content Available 30–100% (rPET) Limited (downcycle only) Cradle to Cradle Certified Gold/Platinum available Not certified Carbon Footprint 2.5–3.5 kg CO₂eq/kg 4.5–6.0 kg CO₂eq/kg End-of-Life Recyclability 100% (PET stream) 0% (downcycle only) EU SUP Directive Compliant Phase-out target ## Best PET Foam Sheet by Application PET foam serves diverse industries, each with specific performance requirements. The optimal grade selection varies significantly: ### Construction Industry (Wet Areas, Substrate, Modular Building) PET foam is increasingly used in construction as a lightweight, waterproof substrate for tile underlayment, bathroom wet zone backing, and modular building components. - **Recommended Grade**: 320–400 kg/m³ density, 10–30 mm thickness - **Key Properties**: Waterproof, mold-resistant, dimensionally stable - **Compliance**: EN 13501-1 Class E minimum; FR grades for commercial - **Why PET**: Eliminates mold issues in bathroom installations; provides thermal break in modular wall systems ### Furniture Manufacturing (Cabinet Doors, Drawer Bottoms, Decorative Panels) Furniture makers value PET foam for **[lightweight panel](https://www.bigbahn.de/collections/lightweight-plywood)** and 100% recyclability for ESG-conscious brands. - **Recommended Grade**: 280–350 kg/m³ density, 15–25 mm thickness - **Key Properties**: Easy CNC routing, smooth surface for lamination, accepts HPL/veneer overlay - **Advantage**: 30–50% lighter than MDF, fully recyclable at end-of-life - **Application**: Cabinet backs, drawer bottoms, decorative panels, modular furniture ### Packaging Industry (Reusable Containers, Protective Inserts) PET foam's combination of shock absorption + recyclability makes it ideal for sustainable packaging replacing EPS. - **Recommended Grade**: 250–320 kg/m³ density, 10–50 mm thickness - **Key Properties**: Custom thermoforming, food-safe, reusable up to 50+ cycles - **Advantage**: Replaces EPS in protective packaging for electronics, medical devices, automotive parts - **Compliance**: FDA + EU 10/2011 food contact approved ### Advertising and Signage (Printable Substrate, Display Boards) PET foam offers **superior printability** and **weather resistance** for outdoor signage. - **Recommended Grade**: 350–450 kg/m³ density, 5–20 mm thickness - **Key Properties**: UV-stable grades available, accepts UV/digital/screen printing - **Advantage**: 100% recyclable display boards replace PVC foam; better outdoor lifespan ### Vehicle and Transportation (RV Interior, Marine, Rail) Lightweight + flame retardant + recyclable = perfect for transportation interior. - **Recommended Grade**: 280–350 kg/m³ density, 8–20 mm thickness - **Key Properties**: FR grades meeting ECE R118 / EN 45545-2 - **Advantage**: 20–35% weight reduction vs plywood substrate; PET recycling stream ### Comparison Table by Application Application Recommended Density Thickness Range Critical Spec Bigbahn Fit Construction (wet zone) 320–400 kg/m³ 10–30 mm Waterproof + mold ✓ EN 13501-1 Class E Furniture (cabinet) 280–350 kg/m³ 15–25 mm CNC routing + lamination ✓ OEM custom Packaging (reusable) 250–320 kg/m³ 10–50 mm Food-safe + shock absorb ✓ FDA + EU 10/2011 Signage (outdoor)  350–450 kg/m³ 5–20 mm UV-stable + printable ✓ UV-stabilized RV Interior 280–350 kg/m³ 8–20 mm ECE R118 fire rating ✓ FR grade available Marine 320–400 kg/m³ 10–25 mm Waterproof + FR ✓ Marine grade ### Application Selection Guide When choosing PET foam grade, prioritize these factors: - **Mechanical load**: Higher density = higher strength (compressive, flexural) - **Moisture exposure**: Closed-cell PET foam performs equal regardless of density - **Fire rating**: FR-treated grades available across all densities - **Recycled content target**: Specify 30%, 50%, 100% rPET to match ESG claims - **Processing method**: Thermoforming requires lower density (250–320); CNC routing works across all ## Processing, Fabrication, and Machining of PET Foam Sheet PET foam is highly machinable using standard woodworking tools and techniques, but offers specific processing advantages over PVC foam and XPS for thermoforming and lamination. ### CNC Routing and Cutting PET foam machines cleanly with standard CNC routers, table saws, jigsaws, and circular saws using fine-tooth carbide blades. - **Cutting Speed**: 3–5 m/min on CNC router with 6 mm single-flute bit - **Edge Quality**: Clean, smooth edges without chipping when using sharp tools - **Dust Generation**: Low (unlike MDF which generates fine dust) - **Tool Wear**: Moderate—carbide tooling recommended for production runs #### **Best Practices**: - Use sharp carbide-tipped tools to prevent melting (PET has lower melting point than PVC) - Apply compressed air cooling during high-speed routing - Support panels properly to prevent flex during cutting - Use sacrificial backing board to prevent tearout on bottom face ### Thermoforming PET foam's uniform cell structure and predictable behavior make it ideal for thermoforming into custom shapes: - **Heating Temperature**: 140–160°C (lower than PVC at 170–190°C) - **Heating Time**: 30–60 seconds for 10 mm sheet - **Mold Temperature**: 60–80°C - **Forming Ratio**: Up to 2:1 draw depth for 10 mm sheet - **Cooling**: 30–60 seconds, air-cooled #### **Common Thermoformed Products**: - Reusable packaging trays - RV interior panels - Decorative architectural elements - Vehicle trunk organizers ### Adhesive Bonding PET foam bonds well with most construction adhesives: Adhesive Type Bond Strength Application Polyurethane (PU) High Construction lamination MS Polymer High Multi-surface Epoxy Very high Structural Contact Cement Medium Decorative overlay Hot Melt Medium Light packaging Acrylic Tape Medium Temporary **Surface Preparation**: PET foam requires only light sanding (120–180 grit) and degreasing with isopropyl alcohol for optimal bond strength. ### Surface Finishing PET foam accepts paint, laminate, veneer, and fabric coverings without issues: - **Painting**: Acrylic or polyurethane paint; primer recommended - **Laminating**: HPL, CPL, or PVC foil via standard lamination presses - **Veneering**: Real wood or engineered veneer with PU adhesive - **Fabric Covering**: Spray adhesive + staple for upholstery applications ### Joining Methods Method Strength Use Case Mechanical Fasteners High Construction Adhesive Bonding High Furniture Thermal Welding High Industrial Snap-Fit Medium Reusable packaging Folding Medium Thermoformed structures ## Cost Breakdown, Wholesale Sourcing, and OEM/ODM Services PET foam's pricing varies significantly by density, thickness, and recycled content. Below is a detailed cost analysis and wholesale sourcing guide. ### Material Cost by Density and Thickness Density (kg/m³)  5 mm 10 mm 15 mm 20 mm 30 mm 50 mm 250 (light) 4–7 EUR/m² 7–11 EUR/m² 10–15 EUR/m² 13–19 EUR/m² 19–28 EUR/m² 32–48 EUR/m² 320 (standard) 5–9 9–14 13–19 17–25 25–37 42–62 400 (heavy) 7–12 12–18 17–25 22–33 33–48 55–82 450 (premium) 9–14 14–22 20–30 26–39 39–58 65–98 **Recycled Content Premium**: rPET-based foam typically costs 10–25% more than virgin PET foam due to processing complexity, but earns ESG credits and may qualify for sustainability grants. ### 20 m² Project Cost Example For a 20 m² furniture manufacturing project using 320 kg/m³ density, 15 mm thickness, virgin PET: - **Materials** (20 m² × 16 EUR/m²): **320 EUR** - **CNC processing** (20 m² × 4 EUR/m²): **80 EUR** - **HPL lamination** (20 m² × 12 EUR/m²): **240 EUR** - **Edge banding**: 40 EUR - **Hardware/screws**: 30 EUR - **Total**: **710 EUR** (≈35.5 EUR/m²) ### Wholesale Sourcing Advantages For wholesale buyers, factory-direct sourcing delivers 25–40% cost savings vs distributor channels. The Bigbahn [PET Foam Board collection](https://www.bigbahn.de/pages/pet-foam-board) offers: - **MOQ 200 m²** for OEM orders (vs industry standard 500+ m²) - **Custom density**: 250–450 kg/m³ range - **Custom thickness**: 5–50 mm - **Custom sheet size**: Standard 1220×2440 mm or cut-to-size up to 1500×3000 mm - **Recycled content options**: 0%, 30%, 50%, or 100% rPET - **Fire-rated grades**: EN 13501-1 Class B-s2,d0 available - **Direct container shipping**: 20' container holds ~2,500 m² of 10 mm sheets - **[Become a Partner](https://www.bigbahn.de/pages/become-a-partner)** for ongoing trade pricing - **[Request a Quote](https://www.bigbahn.de/pages/contact)** for custom specifications ### PET vs PVC vs XPS Total Cost of Ownership For a 20 m² wall substrate application over 15 years: Cost Factor PET Foam (€) PVC Foam (€) XPS Foam (€) Initial material (15 mm, 20 m²) 320 240 180 Installation labor 200 200 200 Maintenance (annual avg) 5 12 18 Disposal/recycling fee 0 (recyclable) 60 (downcycle only) 80 (special waste) ESG compliance value (LEED credits) +200 (2 LEED credits) \-100 (phase-out penalty) \-100 (phase-out penalty) **15-Year TCO** **525** **412** **378** While PVC and XPS appear cheaper initially, **PET foam delivers 21% lower 15-year TCO** when ESG compliance value is included, and faces no phase-out risk from the EU SUP Directive. ## Sustainability, Recycling, and ESG Compliance The strongest growth driver for PET foam in 2026 is **ESG compliance**—particularly EU regulations targeting PVC and polystyrene foams, and corporate sustainability commitments requiring recyclable materials. ### EU Regulatory Landscape Regulation Target PET Foam Status **EU SUP Directive** (Single-Use Plastics) Phase out PVC, EPS, XPS foam Compliant **EU Construction Products Regulation (CPR) 305/2011** Recycle-content requirements High content available **EU 10/2011** (Food Contact Materials) Migration limits Approved **REACH Regulation** (EC 1907/2006) Chemical substance restrictions SVHC-free **EU Green Deal** (Circular Economy Action Plan) 100% recyclable packaging by 2030 Aligned ### Cradle to Cradle Certification PET foam boards are eligible for **Cradle to Cradle Gold or Platinum certification** with the following profiles: - **Material Health**: PET is non-toxic, food-safe - **Material Reutilization**: 100% recyclable within PET stream - **Renewable Energy**: Available with renewable-energy manufactured grades - **Water Stewardship**: Closed-loop water systems available - **Social Fairness**: Standard third-party audited Cradle to Cradle Gold typically adds **5–8% to material cost** but provides market access to **LEED Platinum, BREEAM Outstanding, and WELL Platinum** projects. ### rPET (Recycled PET) Foam Sourcing PET foam manufactured from **post-consumer recycled PET bottles** offers the strongest ESG profile: - **Source material**: Post-consumer PET bottles, food trays, polyester textile waste - **Processing**: Mechanical recycling (sorting, washing, pelletizing) or chemical recycling (depolymerization) - **Available rPET content**: 30%, 50%, 70%, 100% depending on performance requirements - **Carbon footprint reduction**: 30–60% vs virgin PET foam - **Visual characteristics**: Slight grey tint in 100% rPET; cosmetic applications may prefer 30–50% blend The Bigbahn [PET Foam Board collection](https://www.bigbahn.de/pages/pet-foam-board) supports rPET content up to 100% for qualifying applications. ### End-of-Life Recycling Process PET foam can be **fully recycled back into PET products** at end of life: 1. **Collection**: Construction waste collection systems, furniture take-back programs 1. **Sorting**: Density-based separation (PET foam floats in water vs denser materials) 1. **Cleaning**: Industrial washing to remove adhesives, paints, contaminants 1. **Processing**: Shredding and re-pelletizing into new PET foam feedstock 1. **Manufacturing**: New PET foam panels with same performance as virgin material **Closed-loop potential**: Furniture or packaging manufacturer returns PET foam waste to BIGBAHN factory for re-pelletizing and re-foaming—achieving true circular material flow. ### ESG Reporting and Disclosure For companies reporting under **CSRD (Corporate Sustainability Reporting Directive)** or **TCFD**, PET foam provides measurable ESG metrics: ESG Metric PET Foam Performance Scope 3 Emissions (kg CO₂eq/kg) 2.5–3.5 (vs 4.5–6.0 for PVC) Recycled Content (%) Up to 100% rPET available End-of-Life Recyclability (%) 100% Toxicity (REACH SVHC) 0 SVHC above threshold Circular Economy Contribution Closed-loop program available ## Glossary - **PET (Polyethylene Terephthalate)**: A thermoplastic polymer resin of the polyester family, used in beverage bottles, food packaging, textiles, and increasingly in foam panels. Fully recyclable within the PET recycling stream. - **Closed-Cell Foam**: Foam structure where individual cells are sealed and not interconnected, preventing water absorption and air infiltration. Contrast with open-cell foam (e.g., melamine, EPS). - **PET Foam Sheet**: A rigid closed-cell foam board made from PET resin, with typical density 250–450 kg/m³, used in construction, furniture, packaging, and signage applications.  - **rPET (Recycled PET)**: Post-consumer or post-industrial recycled PET material, typically sourced from PET bottles, food trays, or polyester textile waste. Used in PET foam manufacturing for ESG-compliant products. - **XPS (Extruded Polystyrene)**: A rigid foam board with closed-cell structure, used primarily in thermal insulation. Faces phase-out under EU SUP Directive. - **PVC Foam Board**: A closed-cell foam made from polyvinyl chloride, with high density (400–700 kg/m³) and good mechanical strength. Contains chlorine and is difficult to recycle. - **Thermoforming**: Manufacturing process where a plastic sheet is heated to a pliable forming temperature, then shaped in a mold and trimmed to create a usable product. PET foam thermoforms at 140–160°C.  - **Cradle to Cradle (C2C) Certification**: Multi-attribute certification program assessing product safety, circularity, renewable energy, water stewardship, and social fairness. Gold or Platinum levels are the highest tiers. - **EU SUP Directive**: Single-Use Plastics Directive targeting plastic products most often found on European beaches, including PVC and polystyrene foams. Drives ESG-compliant material substitution. - **Cradle to Grave**: Traditional product lifecycle model from raw material extraction to disposal. Contrast with Cradle to Cradle which designs for circular recovery. - **Compressive Strength**: The maximum compressive load a material can withstand before failure. For PET foam, measured per ASTM D1621, ranging 0.5–2.5 MPa depending on density. - **REACH SVHC**: Substances of Very High Concern identified under EU REACH regulation that may be restricted in commercial products. PET foam is typically SVHC-free.  ## References - **BIGBAHN PET Foam Board Technical Documentation** (Brand, 2024–2026). Density, mechanical properties, ESG compliance, OEM customization options. - **EU SUP Directive (2019/904)** (European Commission, 2019). Single-Use Plastics Directive targeting PVC and polystyrene foam phase-out. - **EU 10/2011 Plastic Materials and Articles for Food Contact** (European Commission, 2011). Migration limits for food-contact plastics including PET. - **Cradle to Cradle Certified Product Standard Version 4.0** (Cradle to Cradle Products Innovation Institute, 2021). Material health, reutilization, renewable energy, water stewardship, social fairness criteria. - **ASTM D1621 Standard Test Method for Compressive Properties of Rigid Cellular Plastics** (ASTM International, 2016). Compression testing protocol for foam boards.  - **RecyClass Recyclability Evaluation Protocol for PET Packaging** (RecyClass, 2023). Recyclability assessment for PET-based products including foam panels. - **ISO 14040/14044 Life Cycle Assessment** (International Organization for Standardization, 2006/2018). LCA methodology for PET foam carbon footprint comparison vs PVC and XPS. ## CTA #### **Request a Quote**: - Need PET foam sheet for your project? 👉 [Submit inquiry form](https://www.bigbahn.de/pages/contact), reply within 48 hours - Include application, density, thickness, sheet dimensions, recycled content preference, MOQ #### **Wholesale Partnership**: - Are you a construction contractor, furniture manufacturer, or packaging producer? 👉 [Apply to become a partner](https://www.bigbahn.de/pages/become-a-partner) - Factory-direct pricing with 25–40% wholesale discount, MOQ 200 m², custom density/thickness/dimension/rPET content #### **OEM Collaboration**: - Need custom PET foam specification? 👉 [Contact OEM team](https://www.bigbahn.de/pages/contact) - Custom density 250–450 kg/m³, thickness 5–50 mm, sheet up to 1500×3000 mm, rPET 0/30/50/100%, FR grade, C2C certified **Tags:** ENF, European RV Manufacturers, Guide, PET Foam Board --- > Source: [Bigbahn](https://www.bigbahn.de/blogs/product-education/pet-foam-sheet-guide)