Name: Structural PVC Foam Core Supplier | Excellent Strength-to-Weight
Brand: RaxPanel
Availability: MadeToOrder

PVC Foam Core

PVC Foam Core is a cross-linked, closed-cell structural foam engineered for high-performance sandwich composites. Its closed-cell architecture resists moisture, corrosion, and chemicals while maintaining consistent mechanical performance and dimensional stability across demanding service conditions.

Produced through a controlled foaming process, the material develops a fine, uniform cell structure with low water absorption and a high strength-to-weight ratio. Properties are validated through ASTM standards for compressive, shear, and tensile performance.

Available across a wide density range, the core suits marine hulls and decks, wind-energy components, transportation interiors, and structural building panels. It machines cleanly with standard cutting and CNC tooling, and bonds to fiberglass, aluminum, and plywood using common resins and processes such as hand lay-up, vacuum infusion, and prepreg. Its low resin uptake keeps finished sandwich panels light.

Energy-Efficient PVC Foam Core Supplier

RaxPanel supplies cross-linked PVC Foam Core for structural sandwich composite applications. Based in Hebei, China, we manufacture the foam through a controlled process that produces a fine, uniform cell structure with a high strength-to-weight ratio and low water absorption.

The core is engineered for a high strength-to-weight ratio, low resin uptake, and compatibility with common resin systems. Typical applications include:

Energy-efficient buildings
Cold storage facilities
Transportation applications

The panels combine lightweight construction with reliable structural performance. Contact our engineering team for grade selection, custom dimensions, and a tailored quotation.

Data Sheet
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Parameter Category	Parameter	Value	Test Method
Physical Properties	Density	60 – 250 kg/m³	–
	Closed Cell Rate	≥ 95%	–
	Water Absorption	≤ 1.0 % by vol.	ASTM C272
	Water Vapor Permeance	≤ 1.5 perms	ASTM E96
Mechanical Properties	Compressive Strength	0.5 – 7.0 MPa (varies by density)	ASTM D1621
	Flexural Strength	2.0 – 6.5 MPa (varies by density)	ASTM C203
	Flexural Modulus	80 – 350 MPa (varies by density)	ASTM C203
	Shear Strength	0.5 – 4.7 MPa (varies by density)	ASTM C273
	Shear Modulus	16 – 100 MPa (varies by density)	ASTM C273
	Tensile Strength	1.0 – 7.5 MPa (varies by density)	ASTM D1623
Thermal Properties	Thermal Conductivity	0.030 – 0.038 W/m·K	ASTM C518
	Coefficient of Linear Thermal Expansion	3.5 x 10^-5 in/in·°F	ASTM D696
	Operating Temperature	-50°C to +80°C	–
Fire Performance	Flame Spread Rating	Defined Flame Spread Rating	UL 723 / ASTM E84
	Smoke Developed	≤ 450	UL 723 / ASTM E84
Durability & Stability	Dimensional Stability (Change)	≤ 2.0%	ASTM D2126
General	Available Thickness	10 – 120 mm	–
	Core Material	PVC Foam	–

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PVC Foam Core Selection & Engineering Guide

Selecting the right specification for PVC Foam Core comes down to three factors: the structural load the panel must carry, the environmental exposure it will face, and the target stiffness-to-weight ratio. The sections below cover the key specification decisions.

💡 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	~ 0.030 – 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 EN 13501-1 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 PVC Foam Cores 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 PVC Foam Cores?

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 PVC Foam Cores?

PVC Foam Cores 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 EN 13501-1 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.