Melamine sponge roll

Melamine foam features a three-dimensional reticulated structure with an open-cell ratio as high as 99.9%. Its extremely low thermal conductivity makes it an outstanding thermal insulation material. It is inherently flame retardant — no flame retardants are required. When exposed to fire, it forms a dense carbonized layer, self-extinguishes upon removal from flame, produces no molten drips, low smoke and non-toxic fumes.

With a density of only 8–12 kg/m³ and a temperature resistance range from -160℃ to +240℃, it contains zero formaldehyde and generates no dust. Lightweight, safe and eco-friendly, this single material meets three core requirements simultaneously: sound absorption, thermal insulation and flame retardancy.

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Product Description

Rail Transit Vehicle Interior

Supporting interior fittings for high-speed trains, metro, light rail and tram full-range models. Compliant with EN 45545 fire protection standard for rail transit, meeting stringent rail transit requirements for fire resistance, lightweight property and durable operation.

● Carriage interior areas: carriage ceiling, wall filling and interior partitions. Realize sound insulation, noise reduction and fire protection simultaneously. Lightweight material reduces the overall vehicle weight.

● Driver’s cab and front compartment: custom-shaped acoustic components to specifically attenuate wheel-rail friction noise and reflected noise from on-board equipment, improving the operating environment for drivers and passengers.

● On-board HVAC & ventilation system: water-repellent customized melamine foam fabricated into formed pipe components. Resist water vapor erosion and maintain stable sound-absorbing and flame-retardant performance in the long term, adapting to vehicle working conditions with constant vibration and alternating temperature difference.

● On-board equipment compartments: liners for various electrical control cabinets and air conditioning units. Insulate high temperature and suppress equipment noise. Flame retardant property mitigates fire risks caused by circuit faults.

Technical Parameters

Performance Category	Core Parameters	Description
Sound Absorption & Noise Reduction	NRC ≥ 0.85	Broadband high-efficiency sound absorption, open-cell ratio 99.9%
Thermal Insulation	Thermal conductivity: ≤0.035 W/(m·K) Aerogel version: ≤0.015 W/(m·K)	Outperforms traditional rock wool / glass wool
Flame Retardancy & Safety	UL94 V-0 / B1 Class	Inherent flame retardant, self-extinguishes upon removal from flame, no molten drips, low smoke emission
Lightweight	Density: 8–12 kg/m³	5–10 times lighter than conventional materials, reduces structural load
Temperature Resistance Range	-160℃ ~ +240℃	Stable performance under extreme temperature conditions
Environmental & Safety	RoHS / REACH certified, zero formaldehyde	Dust-free and non-irritating, safe and eco-friendly

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Melamine sponge roll

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