GRP/FRP Sandwich Panels
Weather-resistant Fiberglass Reinforced Composite Panels
- Foam Core Panels
- Honeycomb Core Panels
- Plywood Core Panels
FRP sandwich panels, short for fiberglass reinforced sandwich panels, also known as GRP sandwich panels, are made of flat FRP sheets as the skin and core material. As a new type of composite material, it is increasingly demonstrating its excellent performance in various industries.
We are China’s most innovative FRP sandwich panel manufacturer, providing customized solutions to global customers, solving difficult problems in material application and breaking the limitations of traditional material applications.
We strive to address the following material properties:
- Lightweight.
- High strength.
- Durability.
- Waterproof.
- Thermal insulation.
- Aesthetics.
- Ease of cleaning.
- Easy processing.
Specification
| Facing | Flat FRP sheet. (Thickness: 0.7-5.0mm) |
| Surface Treatment | Glossy, matte, embossed, rough. |
| Surface Color | RAL color series. |
| Core | XPS (Extruded Polystyrene) foam. (Density: 35-50kg/m³). |
| PET (Polyethylene terephthalate) foam. (Density: 60-300kg/m³. | |
| PU (Polyurethane) foam. (Density: 28-50kg/m³). | |
| PVC (Polyvinyl Chloride) foam. (Density: 40-250kg/m³). | |
| PP (Polypropylene ) Honeycomb. (Density: 80-120kg/m³). | |
| Plywood. (Birch, pine, poplar, eucalyptus, oak, etc). | |
| Composite Method | Unsaturated polyester adhesive, polyurethane adhesive, etc. |
| Thickness | 5.0-150mm. |
| Length | ≤12000mm. |
| Width | ≤3200mm. |
Types of FRP sandwich panels
FRP sheets can be composites with many materials through adhesives. Commonly, core materials include foam (XPS, PET, PVC, PU, etc.), honeycomb (polypropylene), plywood, etc. Using different core materials can bring different application effects to GRP sandwich panels, such as foam core has advantages in thermal insulation, honeycomb core is lighter, and plywood has higher strength. Or different materials can be combined together as core materials to make the panel gain multiple advantages.
Understand Common FRP Sandwich Panel Products
Applications of FRP Sandwich Panels
Fiberglass sandwich panels have replaced metal and wood in many fields, giving full play to their performance advantages and becoming an indispensable material choice in economic development.
Box Truck Bodies: Refrigerated trucks, dry cargo trucks, ambulances, horse trailer, etc.
RV Bodies: Off-road trailers, caravans, motorhomes, teardrop trailers, truckcampers, hardshell rooftop tents, etc.
Marine: Ship interior buildings.
Furniture: Desktops, bed boards, cabinets, storage boxes, etc.
Modular buildings: Shelters, mobile barracks, portable toilets, industrial equipment shells, etc.
Transportations: Floors of buses, subways, and high-speed railways.
Weather-resistant FRP Sheets
As a professional composite sandwich panel manufacturer in China, TOPOLOGROUP offers high-quality FRP sheets. Featuring a weather-resistant coating, these sheets are durable and fade-resistant, withstanding diverse weather conditions, including rain, snow, hail, frost, and intense sunlight. To meet the personalized needs of customers, we offer customizable colors (RAL colors) and surface processing options, including various patterns and textures. Our technicians will tailor the thickness of the FRP sheets to your specific strength requirements for optimal mechanical performance.
- Custom colors: RAL color series.
- Custom surface textures: Glossy, matte, embossed, rough, etc.
- Custom sizes: Max. 3.2 x 12m.
Common Performance parameters of FRP sheets
| Thickness | 1.0mm | 1.5mm | 2.0mm | 2.5mm | 3.0mm |
| Weight(Kg/m2) | 1.5 | 2.25 | 3 | 3.75 | 4.5 |
| Glass content(%) | 19 | 25 | 29 | 30 | 30 |
| Tensile strength(Mpa) | 60 | 80 | 92 | 95 | 97 |
| Elongation at break(%) | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
| Elastic modulus(Gpa) | 5.5 | 7 | 7.3 | 7.6 | 7.8 |
| Izod impact strength(KJ/m2) | 45 | 55 | 70 | 80 | 95 |
Innovation and Development – Applications of New FRP Sheets
CFRT (Continuous Fiber Reinforced Thermoplastic) sheet, a new type of thermoplastic FRP sheet, has a structure and properties distinct from traditional thermoset FRP sheet. It is based on a thermal composite of continuous glass fiber and thermoplastic polypropylene resin, and its extremely high elastic modulus imparts enhanced durability.
Customized FRP Sandwich Panels
- Improve product quality.
- Speed up project progress.
- Reduce budget costs.
TOPOLOGROUP is not just a sandwich panel manufacturer, we are also an experienced box body designer. Tell us your application requirements and we will develop a practical solution for your project, the most reasonable materials and the most optimized box body design. In addition, we provide a variety of box accessories such as connecting profiles, hinges, locks, bolts, etc. After the panel production is completed, users can assemble it by themselves or ask us to complete the assembly.
How to enhance the structural strength of foam core FRP sandwich panels?
Larger area, higher load-bearing capacity and impact resistance
Pre-embedded frame
- Build an internal support frame to enhance load-bearing capacity
Pre-embedded frame inside the foam core panel is like implanting “skeleton” into the panel, which can fundamentally improve the anti-deformation ability and dimensional stability, especially suitable for large-size panels.
Adding an energy-absorbing layer
- Build an internal support frame to enhance load-bearing capacity
On the side of the panel that is often subjected to force, add an energy-absorbing layer (usually plywood, composite materials, etc.) between the skin and the foam core. Just like adding a “cushion” to the panel, it can absorb external impact forces (such as collision, extrusion, vibration) through material deformation or energy conversion, reducing damage to the internal core structure.
Post-processing of FRP sandwich panels
High-precision CNC machining easily handles complex designs
Please contact us for more information about Fiberglass composite panels.