Name: HDPE Sandwich Panel Manufacturer: Custom Sandwich Panels & Slats
Brand: RaxPanel
Availability: MadeToOrder

HDPE Sandwich Panel

High-Density Polyethylene (HDPE) sandwich panels feature a honeycomb core construction that delivers exceptional strength-to-weight performance for industrial applications. The HDPE honeycomb core provides outstanding moisture and chemical resistance while maintaining structural integrity through advanced extrusion and proprietary bonding technology.

These lightweight panels combine low mass with high structural performance, making them ideal for weight-critical applications. Their inherent corrosion resistance ensures reliable performance in demanding environments. Manufacturing facilities offer extensive customization for size, thickness, and cell structure parameters to meet specific project requirements.

Standard dimensions reach 3000 mm length and 1500 mm width, with thicknesses from 1.5 mm to 400 mm. Honeycomb cell diameters range from 3.5 mm to 10 mm, with custom specifications available. Applications span automotive components, logistics packaging, construction wall panels, flooring systems, and commercial air flow diffusers.

Comprehensive quality control systems oversee the complete manufacturing process from production through final testing and packaging. Standard delivery time for mass production orders is 10-15 working days, with products shipped in protective plywood cases or pallets. Strategic port location enables efficient global logistics and flexible international delivery terms.

HDPE Sandwich Panels: Your Trusted Supplier for Lightweight Solutions

Founded in 2002, RaxPanel is a professional plastic honeycomb panel manufacturer in China, specializing in lightweight structural solutions for industrial applications. Our HDPE Sandwich Panels are widely used in:

Automotive
Logistics packaging
Construction
Wall panels
Flooring
Commercial air flow diffusers

These panels offer features like lightweight construction, high strength, and corrosion resistance. With over 20 years of experience in mechanical and plastic production, we leverage in-house R&D, design, and advanced manufacturing capabilities to produce over 1500 square meters daily, ensuring both standard and custom solutions for diverse industrial needs.

Based in Hebei—a key industrial region—we benefit from robust logistics and supply chain advantages, enabling efficient service to clients in over 30 countries. Committed to quality, innovation, and customer satisfaction, RaxPanel aims to be your trusted global supplier of HDPE Sandwich Panels. We will come up with a full range of solutions for you.

Parameter	Specification
Core Material	High-Density Polyethylene (HDPE)
Core Structure	Honeycomb
Maximum Length	3000 mm
Maximum Width	1500 mm
Thickness Range	1.5 – 400 mm
Cell Size Range	3.5 – 10 mm
Density Range	70 – 200 kg/m³
Compressive Strength	1.4 – 2.4 MPa
Shear Strength	0.5 – 0.6 MPa
Effective Temperature Range	-40 °C to +120 °C
Key Properties	Lightweight, High Strength, Corrosion Resistant, Moisture Resistant, Chemical Resistant
Standard Certifications	ISO9001, ISO14001
Typical Applications	Automotive, Logistics Packaging, Construction, Wall Panels, Flooring, Commercial Air Flow Diffusers
Packaging	Plywood Case / Pallet
Delivery Time (Mass Production)	10 – 15 working days

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HDPE Sandwich Panel

HDPE Sandwich Panel Selection & Engineering Guide

Selecting the right specification for HDPE Sandwich Panel depends on matching structural load requirements, environmental exposure, and thermal R-value insulation goals. At RaxPanel, our engineering team manufactures high-performance composite panels to deliver durable, moisture-resistant, and energy-efficient solutions for industrial and commercial projects worldwide.

💡 Pro Tip: Delamination Prevention Under Thermal Cycling
At RaxPanel, we utilize automated vacuum lamination with high-performance two-component polyurethane adhesives to ensure a bond strength that absorbs differential thermal expansion without micro-delamination.

1. How to Choose the Right Skin Alloy and Thickness

Outer skin selection governs mechanical impact resistance, corrosion barriers, and structural stiffness across different operating environments.

2. How Well Does the Core Insulate and Withstand Heavy Loads?

The core material handles shear stress and maintains thermal R-value insulation across operating temperature ranges:

Performance Metric	RaxPanel Engineering Standard	Application Advantage
Outer Skin Spec	Pre-Painted Aluminum / GRP Sheet (0.3mm – 2.0mm)	High tensile strength and corrosion resistance
Thermal Conductivity	~ 0.020 – 0.038 W/m·K	Consistent R-value insulation & energy savings
Bonding Adhesive	Two-Component Polyurethane / Epoxy Adhesive	Delamination-free performance under freeze-thaw cycles

3. Which Surface Finish Will Protect Your Panels for 20+ Years?

Factory roller coating specifies long-term color stability, UV protection, and resistance against industrial pollutants or marine salt spray.

4. How Fire-Safe and Soundproof Are These Panels?

🛡️ Compliance & Acoustic Isolation:

Fire Safety: Formulations comply with EN 13501-1 Class B-s1,d0 and GB8624 Class B1 building fire safety standards.
Sound Damping: Composite core attenuates noise transmission by 24 dB to 30 dB relative to solid metal sheets.

5. Where Are HDPE Sandwich Panels Most Commonly Installed?

🏢 Commercial & Industrial Buildings

Exterior wall cladding, cleanroom partitions, and insulated roof envelopes.

🚚 Cold Storage & Transport Fleets

Refrigerated truck bodies, cold storage rooms, and RV composite walls.

6. How to Cut, Groove, and Seal Edges During Installation

Panels process easily on-site using standard CNC machinery, routers, or specialized edge profiles for airtight moisture sealing.

Frequently Asked Questions (FAQS)

1. What are the standard panel thicknesses, maximum lengths, and width options available for HDPE Sandwich Panels?

Standard panel thicknesses range from 10mm up to 150mm. Standard widths include 1000mm, 1220mm, and 1500mm, with maximum single-sheet lengths up to 5800mm (5.8m) to fit ocean freight container shipping dimensions.

2. What are the primary engineering benefits of using HDPE Sandwich Panels?

HDPE Sandwich Panels deliver an exceptional stiffness-to-weight ratio, rot-proof moisture resistance, reliable thermal insulation, and dynamic fatigue endurance for high-stress applications.

3. How do these composite panels perform under high humidity and outdoor weathering?

The closed-cell core prevents water logging and condensation absorption, while pre-painted skins provide a 20+ year weatherability barrier against UV degradation.

4. What fire safety ratings and quality certifications do these composite panels meet?

Flame-retardant formulations meet EN 13501-1 Class B-s1,d0 and GB8624 Class B1 fire performance standards. Manufacturing quality is governed under ISO9001 management systems, with raw material performance verified under SGS and CE testing.

5. What surface coating options are available for exterior UV protection?

70% PVDF Fluorocarbon Coating PVDF coating provides a 20+ year exterior weatherability warranty against UV fading and acid rain. FEVE offers high gloss retention, while PE coating is cost-effective for indoor partitions.

6. Can these composite panels be CNC grooved, bent, or edge-sealed on-site?

Yes. Pre-painted skins can be V-grooved at 90° or 135° on the reverse side using standard CNC routers or hand tools, allowing manual edge folding into architectural cassettes without surface paint cracking.

7. How are large panel shipments packaged to prevent freight damage during ocean transit?

Panels are packed with protective PE film on both skins, separated by inter-sheet foam layers, and secured on heavy-duty export wooden pallets or CKD steel crates to prevent shipping damage during 20ft and 40ft container freight.