Fiberglass Foam Core Sandwich Panels

Fiberglass/GRP Foam Core Panel

Fiberglass/Glass Reinforced Polymer (GRP) foam core panels combine fiberglass reinforced polymer skins with a lightweight foam core in a sandwich construction. The Glass Reinforced Polymer (GRP) skins feature glass fibers embedded in thermosetting resin, while the core uses rigid foam such as polyurethane (PU), extruded polystyrene (XPS), or polyethylene terephthalate (PET). High-performance adhesives bond these layers for structural integrity across environmental conditions.

The panels deliver exceptional thermal insulation through their closed-cell foam cores, which effectively reduce heat transfer. Their lightweight construction achieves high strength-to-weight ratios while maintaining impact resistance and durability. The GRP surface provides scratch resistance and withstands moisture, corrosion, and chemical exposure for extended service life.

Standard specifications include thickness ranges from 10mm to 120mm, with maximum dimensions reaching 12 meters length and 3.2 meters width. Foam core density varies between 28 kg/m³ and 300 kg/m³ depending on performance requirements. Surface treatments include glossy or matte finishes with optional protective films.

Applications span transportation (refrigerated truck bodies, trailer linings), marine construction (boat decks, cabin partitions), building systems (partition walls, curtain walls), and industrial uses (logistics crates, furniture manufacturing). The panels machine easily with standard woodworking tools or Computer Numerical Control (CNC) equipment for precise cutting, drilling, and routing operations.

Trusted Global Supplier: RaxPanel GRP Foam Core Solutions

As a leading manufacturer, supplier, and exporter of polyurethane foam (PU) sandwich panels, RaxPanel leverages 20+ years of expertise to deliver Fiberglass/GRP Foam Core Panels engineered for superior thermal insulation and durability in freezer cargo boxes.

Based in Hebei, China, and serving clients in 30+ countries, our in-house R&D and production capabilities ensure every panel benefits from continuous fiber reinforcement for exceptional toughness and PU foam core properties for optimal temperature retention.

With a daily output of 1500+ m², we provide reliable, custom solutions that meet rigorous industry demands. Our commitment to excellence and advanced technology guarantees sustainable, high-performance materials tailored to your specific needs.

Choose RaxPanel Fiberglass/GRP Foam Core Panels and experience the difference in quality and efficiency.

Parameter	Specification
Panel Material	Fiberglass Reinforced Polymer (FRP) Skin
Core Material	Rigid Foam (e.g., PU, XPS, PET)
Core Density	28 – 300 kg/m³ (Customizable)
Total Thickness	10 – 120 mm
Length	≤ 12 m
Width	≤ 3.2 m
Surface Treatment	Glossy / Matte Finish; Optional Protective Film
UD Tape Layers (Skin)	2 – 9 layers (Customizable)
Temperature Resistance	High Temp: Up to 120°C; Low Temp: -40°C
Weight	Custom, based on thickness and core material
Performance Treatments	Optional: UV-resistant, Anti-static, Flame-retardant
Processing	CNC Machining (Cutting, Drilling, Routing)
Embedded Reinforcement	Optional: Aluminum profiles, Wooden inserts

Related Products

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GRP Plywood Panel

GRP Balsa Sandwich Panel

GRP PET Sandwich Panel

GRP PU Sandwich Panel

GRP PVC Sandwich Panel

GRP XPS Sandwich Panel

Frequently Asked Questions (FAQS)

What is a fiberglass foam core panel?

A fiberglass foam core panel is a sandwich composite consisting of two GRP (Glass Fiber Reinforced Plastic) skins bonded to a lightweight foam core. This structure delivers high strength, thermal insulation, and durability while remaining lightweight—ideal for applications demanding performance and efficiency.

What are the key advantages of these panels?

Key advantages include excellent thermal insulation from the closed-cell foam core, lightweight construction with high strength-to-weight ratio, superior impact resistance, waterproof and moisture-proof properties, ease of cutting and processing with standard tools, and exceptional corrosion resistance for long-term durability.

In which industries are these panels commonly applied?

These panels serve recreational vehicles (RV walls, floors, roofs), box trucks and trailers, building construction (mobile homes, temporary structures, guard booths), marine vessels (boats and yachts), furniture manufacturing, and specialized applications in aviation, automotive, and architectural sectors.

What core materials and specifications are available?

Core options include XPS, PET, PVC, PU, EPP, and MPP foams, each suited to specific performance needs. Standard specifications offer lengths up to 12 meters, widths to 3.2 meters, thicknesses from 10mm to 120mm, and core densities from 30 to 300 kg/m³. Panels can be fully customized in size, thickness, color, and material composition.

Can panels be customized with embedded reinforcements?

Yes, advanced CNC machining enables complex cutting, drilling, and milling. Embedded reinforcements—such as wood, metal pipes, or plastic components—can be integrated during production to enhance structural strength, simplify screw installation, and accommodate electrical wire routing for streamlined assembly.

How durable are these panels in harsh environments?

Designed for service life exceeding ten years, these panels resist UV radiation, corrosion, weathering, and moisture. The strong bond between FRP skin and foam core prevents delamination, maintaining structural integrity without warping or degradation even in demanding conditions.

What support do you offer for large-scale OEM production?

Our facility produces over 1500 m² daily, ensuring reliable high-volume supply. With 20+ years of manufacturing experience and strict quality control, we deliver customized solutions tailored to OEM specifications—backed by consistent quality and on-time fulfillment for demanding production schedules.

What are your terms for distributors and wholesalers?

We provide competitive bulk pricing, reliable global logistics serving 30+ countries, and marketing support including brochures and samples. Delivery timelines include samples within 2-3 days and mass production in 7-15 working days after payment confirmation, ensuring consistent supply for your sales channels.

Can you provide technical data and samples for design evaluation?

Yes, we supply detailed technical data sheets with performance metrics (thermal conductivity, strength values), material specifications, and CAD models upon request. Material samples are available to help engineers, architects, and designers verify compliance with project requirements and explore design possibilities.