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🧱 RUBASIA RUBBERTECH INDUSTRIES

EVA Foam Sheet | Ethylene Vinyl Acetate Closed-Cell Foam Sheet

Thickness Range: 3mm – 50mm
Density Range: 25kg/m³ – 250kg/m³
Sheet Size: 1m × 2m | 1.2m × 2.4m | Custom cut
Available Colors: Black | Grey | White | Blue | Green | Red | Yellow | Custom colors available
Surface Finish: Smooth | Embossed | Anti-slip | Textured
Material Type: Closed-cell cross-linked copolymer of Ethylene and Vinyl Acetate

 

⚙️ Technical Properties of EVA Foam Sheet

Property	Test Method	Typical Value	Remarks
Density	ASTM D3575	25 – 250 kg/m³	Determines hardness, strength & cushioning level
Hardness (Shore C)	ASTM D2240	20°C: 20 – 65 Shore C	Softer grades for cushioning, harder grades for insulation
Tensile Strength	ASTM D412	0.3 – 1.5 MPa	High mechanical strength for load-bearing applications
Elongation at Break	ASTM D412	100% – 400%	Excellent flexibility and stretchability
Compression Set (70°C, 22h)	ASTM D3575	<10%	Retains shape under long-term compression
Tear Strength	ASTM D624	2 – 10 N/mm	Resistant to tearing, ideal for padding and seals
Water Absorption	ASTM D1056	<0.5%	Virtually waterproof – closed-cell structure
Thermal Conductivity (K)	ASTM C518	0.033 – 0.045 W/m·K	Excellent thermal insulation
Operating Temperature Range	—	-40°C to +90°C	Suitable for both cold and hot environments
Flammability Rating	FMVSS 302	Self-extinguishing (optional FR grade available)	Meets automotive and marine safety standards
UV & Ozone Resistance	ISO 4892	Excellent	Suitable for outdoor & tropical use
Chemical Resistance	—	Good	Resistant to mild acids, alkalis, oils, and saltwater
Electrical Resistivity	ASTM D257	10¹⁴ Ω·cm	Excellent electrical insulation property

🔩 Technical Structure and Composition

EVA foam is a cross-linked copolymer of Ethylene and Vinyl Acetate (VA).
The Vinyl Acetate content typically ranges between 10% and 40%, controlling its softness, elasticity, and resilience.

• Low VA content (10–15%) → Higher stiffness, better chemical resistance.
• High VA content (20–40%) → Softer, better flexibility, improved cushioning.

The foam is expanded through a closed-cell cross-linking process, ensuring zero air or water permeability, making it completely waterproof and buoyant.

 

🧰 Mechanical & Physical Performance

🪶 Lightweight with Structural Stability

• Specific gravity between 0.03 to 0.25, making EVA one of the lightest engineering foams.
• Maintains excellent dimensional stability under mechanical stress or compression.
• Ideal for marine floatation, soundproof panels, and vibration isolators in Borneo’s humid environment.

 

🧊 Thermal and Acoustic Insulation Performance

• EVA’s thermal conductivity is low (0.033–0.045 W/m·K), giving excellent heat retention and insulation.
• Performs well as roof insulation, air-conditioner duct lining, and cold room sealing.
• High sound absorption coefficient (0.3–0.7 NRC) for vibration and echo control.
• Used in generator rooms, recording studios, and HVAC systems across Sabah and Sarawak.

 

💧 Closed-Cell Waterproof Performance

• Each cell in EVA foam is completely sealed, preventing water, air, or dust penetration.
• Water absorption rate is less than 0.5% even after 24-hour submersion.
• Resistant to saltwater, humidity, and condensation, ideal for marine, coastal, and tropical applications in Brunei and Labuan.

 

☀️ UV, Ozone, and Chemical Resistance

• Engineered with UV stabilizers and antioxidant additives.
• Maintains color, elasticity, and mechanical integrity under direct sunlight.
• Resistant to ozone cracking, oxidation, and tropical degradation.
• Excellent for outdoor, marine deck, or solar insulation applications in Tawau, Miri, Kuching, and Bandar Seri Begawan.

 

🔇 Vibration and Noise Damping

• EVA Foam absorbs and dissipates mechanical vibrations and shocks.
• Damping Coefficient (tan δ): 0.05 – 0.25, depending on density.
• Prevents resonance in machines, compressors, and moving parts.
• Used under machinery bases, flooring systems, and packaging for sensitive instruments.

 

🧱 High Compressive Strength and Resilience

• Compression Strength: 40–250 kPa (10% deflection)
• Recovery Rate: >98% after load removal
• Creep Resistance: Excellent long-term elasticity, even under continuous load.
• Ideal for industrial pads, load supports, anti-fatigue mats, and footwear soles.

 

🧩 Available EVA Foam Grades by Function

Type	Description	Typical Uses
Standard EVA Foam Sheet	General-purpose foam for insulation, cushioning, packaging	Construction, craft, OEM
High-Density EVA Foam	Greater hardness, durability & load-bearing	Industrial pads, machine mounts
Soft-Grade EVA Foam	Flexible, soft-touch comfort foam	Sports mats, footwear, children play mats
Fire-Retardant EVA Foam (FR)	Self-extinguishing formulation	Automotive, marine, building interior
Adhesive-Backed EVA Foam	Single or double-sided pressure-sensitive adhesive (PSA)	Gasket, sealing, DIY insulation
Embossed / Textured EVA Foam	Non-slip, decorative, or anti-slip surface	Boat decking, gym flooring, signage
Color EVA Foam	Multi-colored options	Displays, cosplay, crafts, promotional use

🔧 Technical Advantages for Borneo Environment

Challenge	EVA Foam Solution
High humidity & saltwater exposure	100% closed-cell waterproof EVA – no mold or mildew
Extreme temperature variation	Stable from -40°C to +90°C
UV & ozone exposure	Long-lasting outdoor durability
Vibration from heavy equipment	High shock absorption & damping
Sound reflection in enclosed areas	Excellent acoustic insulation
Frequent contact with chemicals & oil	Resistant to mild acids, alkalis, oils

🏗️ Common Industrial Applications in Borneo

• 🏗 Construction & HVAC: Duct insulation, vibration pads, expansion joint filler, roofing underlay.
• 🚢 Marine & Offshore: Deck padding, floatation devices, boat flooring, fender liner.
• 🚗 Automotive: Gaskets, dashboard padding, interior insulation, trunk liner.
• 🏭 Industrial: Machinery base pads, packing foam, anti-vibration blocks, equipment spacers.
• 🧘 Sports & Leisure: Exercise mats, play mats, safety floorings, shoe soles.
• 🧰 OEM & Fabrication: Custom gaskets, laminated composites, protective cases.

 

🌍 Delivery Across Borneo

RUBASIA RUBBERTECH INDUSTRIES delivers EVA Foam Sheets throughout:
Sabah: Kota Kinabalu, Sandakan, Tawau, Lahad Datu, Kudat, Keningau, Tenom, Ranau, Papar, Beaufort, Sipitang, Tuaran, Tambunan, Penampang, Putatan, Labuan.
Sarawak: Kuching, Miri, Sibu, Bintulu, Kapit, Sarikei, Limbang, Lawas, Betong, Mukah, Sri Aman, Serian, Bau, Lundu, Marudi.
Brunei: Bandar Seri Begawan, Kuala Belait, Seria, Tutong, Temburong.

 

🏆 Why Choose RUBASIA RUBBERTECH INDUSTRIES

• 15+ years expertise in industrial rubber & foam solutions
• Custom fabrication (CNC cutting, lamination, adhesive backing)
• Stock available in multiple densities, colors, and hardness levels
• OEM and engineering-grade material supply
• Fast delivery across Borneo and nationwide