
PET FOAM SANDWICH PANELS
Lightweight Solution Expert
- Strong & Durable
- Lightweight
- Waterproof
- Recyclable
- Budget-friendly
PET foam sandwich panels represent a new type of composite material. TOPOLO creatively combines PET foam core with various skin materials, and this change is revolutionary, the lightweight PET foam composite panel brings a fresh perspective to your business. Whether your industry is traditional constructions, vehicles, ships, or new energy, PET composite panels can be applied to your project.
As a manufacturer of one-piece composite panels, TOPOLO produces custom PET foam core sandwich panels in various specifications. We prioritize every stage of the process—from raw materials and production to packaging and shipping—to deliver high-quality products to our clients.
PET Composite Panel Product Display






Specifications
| Core | PET (Polyethylene Terephthalate) Foam Board. (Density: 50-300 kg/m³.) |
| Skin | FRP / GRP (Fiberglass Reinforced Plastic) Sheets. |
| CFRT (Continuous Fiber Reinforced Thermoplastic) Sheets. | |
| Aluminum Sheets. | |
| Plywood, MDF (Medium-Density Fiberboard). | |
| PPGI, PPGL Sheets. | |
| PET, PVC Sheets | |
| Stainless Steel Sheets. | |
| HPL Sheets. | |
| Composite Methods | Adhesive bonding |
| Thermal lamination. (Thermoplastic skin) | |
| Width | ≤3.2m. (Tolerance: ≤1.0mm.) |
| Length | ≤12m. (Tolerance: ≤1.0mm.) |
| Thickness | 3.0-120 mm. (Tolerance: ≤0.1mm.) |
Common Structures of PET Foam Sandwich Panels
Sandwich structures are among the most common types of composite construction. Using adhesives such as structural glues and hot-melt adhesives, PET foam can be bonded with FRP (GRP), aluminum, pre-painted steel, plywood, and other materials to produce sandwich panels for a wide range of applications.
PET Foam Core
There is virtually no difference in performance between virgin and recycled PET foam cores, and TOPOLO offers both options.

Virgin PET foam

Recycled PET foam
PET (polyethylene terephthalate) foam is a structurally stable, closed-cell, rigid foam material characterized by its light weight, low water absorption, high strength, and ease of cutting. It can serve as a substitute for wood in core applications, thereby reducing the exploitation of forest resources. Key advantages of PET foam include its non-toxicity and recyclability; a significant portion of PET products is manufactured from recycled materials, making it an environmentally friendly material recognized and promoted worldwide.
Note: The mechanical properties of PET foam cores vary with density. Learn More
TOPOLO Custom PET Foam Core Sandwich Panels for Your Projects

Production in Bulk
- TOPOLO has a daily production capacity of 1,000 to 2,000 ㎡ for foam sandwich panels, enabling high-volume production and relatively short lead times.

High-Efficiency, High-Precision Machining
- TOPOLO provides secondary processing services for unfinished PET panels, including cutting, drilling, milling, and other machining operations. With high and consistent machining accuracy, our services help reduce the need for additional processing and lower downstream manufacturing costs for customers.

Supporting Accessories
As part of its one-stop solution, TOPOLO provides a full range of accessories for composite panel systems, including metal profiles, bolts, rivets, and other components, enabling fast and efficient modular assembly.

Packaging and Transportation Solutions
- To address the challenges customers face with unloading, we design appropriate packaging and transportation solutions based on their existing equipment and handling tools.
Common Application Scenarios
PET foam sandwich panels are widely used in sectors such as vehicles, buildings, marine vessels, industrial equipment, and furniture. Composite panels featuring PET foam cores reinforced with fiberglass skins (specifically FRP and CFRT) are increasingly favored; they are gradually replacing traditional metal or wood materials, offering advantages such as lighter weight, higher strength, greater durability, and lower costs.

Box Van Bodies
- PET composite panels are used to build lightweight vehicle bodies, extending service life, simplifying maintenance, and reducing operating costs.

Recreational Vehicle Bodies
- For RV body structures requiring higher strength—such as expedition vehicles, off-road trailers, and Luoyang RVs—PET composite panels demonstrate superior performance compared to other materials.

Public Transportation
- PET composite panels are widely used for flooring in subways, high-speed trains, buses, and trams, making travel more comfortable and relaxed.

Furniture Applications
- PET composite panels can be used as an alternative to solid wood in a wide range of furniture products, including cabinets, shelving, wardrobes, bookcases, tabletops, and more.

Modular Buildings
- PET composite panel kits can be quickly assembled, disassembled, and relocated, making them an ideal solution for portable and temporary buildings that require rapid deployment, such as temporary housing, shelters, restrooms, shower facilities, and more.

Industrial Equipment Enclosures
- Industrial equipment—such as air handling units, generator sets, and electrical systems—requires reliable protection for its internal components. Thanks to their excellent water resistance, moisture resistance, and weatherability, PET composite panels are ideal for manufacturing equipment enclosures and modular protective structures, effectively shielding internal components from rain, moisture, and harsh outdoor environments.
















