Building Sandwich Panels for Roofs and Walls

Building Sandwich Panel

Building sandwich panels combine a polypropylene honeycomb core with outer skin layers, typically Continuous Fiber Reinforced Thermoplastic (CFRT) sheets. The honeycomb structure, approximately 95% air, delivers exceptional strength-to-weight ratios while maintaining structural integrity across temperatures from -40°C to +80°C.

The polypropylene core fuses to skin layers through glue-free bonding under heat and pressure, eliminating adhesives. CFRT skins may include multiple unidirectional tape layers and protective films for enhanced bonding and scratch resistance. Panels resist moisture, corrosion, and chemicals while remaining fully recyclable.

Available thicknesses range from 5mm to 120mm, with maximum dimensions reaching 2.8 meters wide by 12 meters long. Core densities typically span 60-100 kg/m³, with compressive strength values from 1.47 to 2.6 MPa. The thermoplastic nature enables CNC machining, thermoforming, and bending without delamination concerns.

Applications include commercial vehicle bodies, mobile homes, transportation flooring, marine decks, architectural partitions, and building formwork. Surface treatments offer glossy or matte protective films, embossing, and custom paint coatings. UV protection through carbon black additives maintains mechanical properties in outdoor environments.

Aluzinc Sandwich Panel

A composite panel constructed with a zinc-aluminum alloy coated steel sheet, known as Aluzinc. This coating provides excellent corrosion resistance and superior heat reflectivity. The panel combines these durable facings with a structural insulating core, ensuring high strength and a long service life.

Compact Laminate HPL Panel

A self-supporting, high-pressure decorative panel made from multiple layers of kraft paper saturated with phenolic resin. Its high-density, non-porous surface delivers excellent impact and scratch resistance, along with being completely water-resistant, dimensionally stable, and easy to clean.

EPS Sandwich Panel

A lightweight and cost-effective structural panel utilizing an expanded polystyrene (EPS) foam core. This material provides good thermal insulation and sound absorption properties. Its composition offers a high strength-to-weight ratio, making it an economical choice for insulated constructions.

Exterior Wall Cladding Panel

A protective outer layer for building envelopes, designed for superior weather and UV resistance. This material provides a durable, low-maintenance building facade with enhanced thermal performance. It is available in various textures and finishes to create a distinct aesthetic appeal.

Hollow Plastic Formwork

A reusable formwork system made from polypropylene, featuring a hollow internal structure. This design makes it lightweight yet high-strength and waterproof. It offers exceptional durability with high reusability of over 50 cycles and requires no release agent due to its non-stick surface.

PIR Sandwich Panel

A high-performance insulated panel with a rigid polyisocyanurate (PIR) foam core. It is defined by its superior fire resistance and excellent fire performance rating. The core also offers high thermal efficiency, good compressive strength, and long-term structural stability.

Plywood Foam Core Panel

A composite panel constructed with plywood face sheets bonded to a rigid foam insulation core. This structure combines the high structural strength and impact resistance of plywood with the lightweight and thermal insulating properties of the foam, creating a versatile building material.

PUR Sandwich Panel

A high-efficiency insulated panel featuring a rigid polyurethane (PUR) foam core. It is characterized by its excellent thermal insulation properties and a very low thermal conductivity coefficient. This material is lightweight with good bonding strength and high mechanical resistance.

Rockwool Sandwich Panel

A non-combustible composite panel with a core made of high-density stone wool (rockwool). Its defining characteristics are excellent fire resistance and superior acoustic insulation properties. The structural mineral wool core also provides good thermal performance and high compressive strength.

Snap N Lock Insulated Panel

An insulated panel system featuring a patented interlocking joint design. This allows for fast, easy installation without additional fasteners. The unique locking mechanism creates a continuous, thermally efficient, and airtight seal, ensuring high structural performance and insulation continuity between panels.

Stainless Steel Sandwich Panel

A high-performance panel featuring stainless steel skins bonded to a rigid insulating core, engineered for maximum durability. Its defining characteristics are superior corrosion resistance, a non-porous hygienic surface that is easy to clean, and excellent fire resistance properties for demanding environments.

Z Lock Insulated Panel

Z Lock Insulated Panel is a three-layer sandwich construction featuring corrugated steel sheets on both sides with an insulating foam core, typically EPS (expanded polystyrene). The distinctive Z-shaped interlocking system creates secure, wind-resistant connections between panels through a spike-and-groove mechanism.

Building Sandwich Panels: Your Trusted Supplier for Eco-Friendly Solutions

RaxPanel, a leading Chinese manufacturer of Building Sandwich Panels, has over 20+ years of experience in the production of high-quality composite panel solutions. Our panels feature a unique sandwich structure with a polypropylene honeycomb core, offering exceptional lightweight properties, durability, and full recyclability. With a daily output of 1500+ m² from our Hebei-based production facilities, we deliver reliable, high-performance, and eco-friendly panels tailored to diverse applications. These applications include:

construction
logistics
transportation
industrial use

As a direct manufacturer with in-house R&D and design capabilities, we ensure precise customization in size, thickness, and surface finish to meet specific project needs. Our Building Sandwich Panels are known for their excellent chemical resistance, impact strength, thermal insulation, and ease of processing—whether die-cutting, CNC machining, or bending. Built on a philosophy of sustainability and innovation, we provide cost-effective, rapid, and high-quality solutions for clients across 30+ countries. Contact us to discuss how we can meet your project requirements with precision and efficiency.

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Frequently Asked Questions

What are the main applications of RaxPanel Building Sandwich Panels?

RaxPanel Building Sandwich Panels are widely used to replace metal and wood in various industries. Common applications include box bodies (dry cargo boxes, RV bodies, flight cases, mobile toilets, mobile houses), flooring (RVs, yachts, trucks, buses, scaffolding boards), building formworks, partitions, solar back panels, countertops, and baffles.

Can RaxPanel Building Sandwich Panels be customized?

Yes, RaxPanel offers customized Building Sandwich Panels. We provide tailored solutions for color, size, thickness, and density. We also offer CNC processing services to eliminate the need for reprocessing, supply related accessories, and provide CKD/SKD services along with reliable packaging solutions.

Are RaxPanel Building Sandwich Panels waterproof and corrosion-resistant?

Yes. The polypropylene honeycomb core offers excellent resistance to water and many chemicals, making the panels waterproof and highly corrosion-resistant. They are also resistant to fungi, rot, and moisture, ensuring long-term durability even in harsh environments.

What are the environmental benefits of using RaxPanel Building Sandwich Panels?

RaxPanel Building Sandwich Panels are 100% recyclable, energy-saving, and free from VOC and formaldehyde. The thermoplastic resin used is fully recyclable, supporting green and environmentally friendly construction practices.

What surface treatments are available for RaxPanel Building Sandwich Panels?

We offer multiple surface treatment options including glossy, matte, embossed, and painted finishes. Protective films can be applied to enhance scratch resistance, and surfaces can be embossed with various textures or sprayed with customized patterns.

How does the honeycomb structure contribute to the panel's strength and weight?

The honeycomb core has a low density (typically 60–100 kg/m³) but delivers high compressive and bending strength. This structure uses minimal material while providing exceptional mechanical properties, resulting in a lightweight yet strong panel ideal for reducing dead load and improving load capacity.

What are the dimensions and specifications available for RaxPanel Building Sandwich Panels?

Our panels are available in thicknesses from 6.0 mm to 120 mm, with a maximum width of 2.8 m and length of 12 m. The skin is made from CFRT (continuous fiber reinforced thermoplastic) sheet, and the core is polypropylene honeycomb. Custom sizes and technical specifications can be provided upon request.

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