GRP Composite Panels with PVC Core - Flame Retardant & Waterproof

GRP PVC Sandwich Panel

GRP PVC sandwich panels combine glass fiber reinforced plastic (GRP) skins bonded to a polyvinyl chloride (PVC) foam core, delivering high strength-to-weight ratio with thermal insulation. The closed-cell PVC foam core provides low thermal conductivity while the GRP skins contribute structural rigidity. These panels offer waterproof performance, corrosion resistance to acids and alkalis, and flame retardant capabilities, making them suitable for moisture-exposed and chemically aggressive environments. Operating temperature ranges from -40°C to +80°C, with anti-ultraviolet additives ensuring color stability and reducing yellowing over time.

The GRP skins utilize either thermosetting resins (unsaturated polyester or epoxy) or thermoplastic variants such as continuous fiber reinforced thermoplastic (CFRT) sheets. PVC foam cores range from 40 to 250 kg/m³ density, adjustable for compressive strength and insulation requirements. Polyurethane or polyester adhesives bond the layers, preventing delamination under stress. Quality control ensures smooth, flat surfaces free from defects, with tight core-to-skin bonding that resists edge warping.

Standard dimensions reach up to 12 meters in length and 3.2 meters in width, with thickness customizable from 10 mm to 150 mm. Weight typically ranges from 7.0 to 8.6 kg/m² depending on configuration. CNC machining enables precise cutting, drilling, and shaping for complex designs, while standard composite tools facilitate efficient fabrication and assembly.

GRP PVC Sandwich Panel Supplier for Superior Thermal Efficiency

RaxPanel is a technology company integrating new materials and innovative solutions, based in Hebei, China. Since our founding in 2002, we have over 20 years of experience as a direct manufacturer specializing in custom composite panel solutions.

Our GRP PVC Sandwich Panels exemplify our commitment to quality and innovation, featuring a sandwich structure that bonds PVC sheets with foam insulation to deliver outstanding thermal insulation, sound absorption, and fire resistance. This advanced design ensures energy efficiency by maintaining stable indoor temperatures, leading to significant reductions in heating and cooling costs while enhancing comfort.

With in-house R&D, design, and production capabilities, we uphold strict quality control and achieve a daily output of over 1500 square meters. Our panels are customizable in sizes, thicknesses, and colors to meet diverse project needs.

We serve a global market, with clients in over 30 countries, providing reliable manufacturing and supply services exclusively. Please contact us to get more information and find the perfect solution for your project.

Parameter Category	Parameter	Value
General Specifications	Skin Material	Glass Reinforced Plastic (GRP)
	Core Material	Closed-cell Polyvinyl Chloride (PVC) Foam
	Adhesive	High-strength, heat and low-temperature resistant
Dimensions	Thickness	10 – 120 mm
	Width	≤ 2.8 m
	Length	≤ 12 m
Core Properties	Core Density	Customizable (Typical range: 40-70 kg/m³)
	Water Absorption	None (Closed-cell structure)
Performance	Thermal Insulation	Excellent (Low thermal conductivity)
	Impact Resistance	High
	Scratch Resistance	High (Protective film available)
	Corrosion Resistance	Excellent
	Waterproof	Yes
Surface & Finish	Surface Treatment	Matte / Glossy; Protective film (e.g., PET, PP)
	Color Options	Customizable
Processing & Customization	Machinability	Standard woodworking and CNC tools
	Embedded Reinforcements	Wood, aluminum profiles (optional)
	Recyclability	Yes

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Frequently Asked Questions (FAQS)

What is a GRP PVC Sandwich Panel?

A GRP PVC Sandwich Panel is a composite panel composed of GRP (Glass Fiber Reinforced Plastic) skins and a closed-cell PVC foam core, combining structural stability with lightweight properties. It includes performance treatments like anti-ultraviolet, flame retardant, and antistatic features, with a working temperature range from -40°C to +80°C.

What are the key advantages of GRP PVC Sandwich Panels?

These panels offer a high strength-to-weight ratio, excellent thermal insulation due to low thermal conductivity, waterproof capabilities with very low water absorption, corrosion resistance, flame retardancy, and anti-ultraviolet performance. They are lightweight, durable, and easy to process, making them ideal for various demanding applications.

What industries and applications are these panels suited for?

They are commonly used in RVs, box trucks, refrigerated trucks, vessels, sports products, construction, and mobile homes for applications such as wall panels, floors, roofs, partitions, and ceilings. Their versatility also extends to furniture, packaging, and public transportation.

What standard sizes and customization options are available?

Standard dimensions include lengths up to 12 meters and widths up to 3.2 meters, with total thickness customizable from 10mm to 120mm or more. Customization options include embedded reinforcement materials, high-precision CNC machining services for cutting and drilling, various surface finishes like glossy, matte, embossed, or rough, and colors customizable to RAL standards.

What is your production capacity and how do you manage timely deliveries for large orders?

With a daily production capacity of over 1500 square meters and experience in serving clients globally, we ensure efficient production and reliable delivery schedules for bulk orders through optimized logistics and supply chain management.