1. The Industry Challenge of Noise Control
In modern industrial and building environments, air compressors, heat pumps, and ventilation fans are among the major sources of operational noise and vibration.
These systems typically generate strong aerodynamic and structural noise within the 500 Hz – 4 kHz range, directly affecting acoustic comfort and regulatory compliance.
Conventional materials such as glass wool and polyurethane foam may offer low cost, but they still fall short in performance:
Limited heat resistance – prone to powdering, shrinkage, or collapse under long-term heat;
Flame resistance dependent on formulation – low-grade products may char or smoke under high temperature;
Narrow absorption bandwidth – limited efficiency in mid to high-frequency sound reduction.
Manufacturers are increasingly seeking lightweight, stable, and inherently flame-resistant materials capable of broadband acoustic absorption and sustainable integration.

2. YDNFoam™ 4 kg/m³ Ultra-Light Melamine Foam Solution
Developed with proprietary micro-cellular aerated foaming technology, YDNFoam™ 4 kg/m³ represents an aerospace-grade melamine foam that combines extreme lightness with outstanding sound absorption and thermal stability.
Key Features:
🪶 Ultra-Lightweight: Only 4 kg/m³ – one-fourth the weight of conventional acoustic foam.
🔥 Inherently Flame Retardant: Meets UL94 V-0 without any additives.
🎧 Broadband Acoustic Performance: NRC ≥ 0.85 (125 Hz–4 kHz).
🌡️ Wide Temperature Range: Stable from –200 °C to +240 °C.
🧪 Chemically Stable: Resistant to oil mist, acids, alkalis, and oxidation; VOC-free and fiber-free.

3. Typical Applications: Making Equipment Truly “Silent”
1️⃣ Air Compressor Noise Control
Lining the inner panels with YDNFoam™ reduces 5–8 dB(A) of operational noise.
Remains dimensionally stable under high-temperature and vibration conditions.
Optional aluminum foil lamination enhances heat reflection and mechanical protection.
2️⃣ Heat Pump Acoustic Enclosures
Applied inside compressor housings to reduce structure-borne and airborne noise.
Lightweight construction adds negligible load to the system.
Moisture-resistant and anti-bacterial for long-term outdoor performance.
3️⃣ Fan and Duct Systems
Serves as an internal duct liner to absorb turbulence and airflow noise.
Easily cut or formed to fit complex geometries.
Maintains low airflow resistance and long-term acoustic efficiency.

4. Material Performance Comparison
Property YDNFoam™ 4 kg/m³ Melamine Foam Polyurethane Foam Glass Wool (General Type)
Flame Resistance Inherent UL94 V-0 (Self-extinguishing) Additive V-2 or lower Dependent on binder; some grades flammable
Temperature Range –200 °C to +240 °C ≤ 120 °C ≤ 180 °C
Sound Absorption (NRC) ≥ 0.85 0.55 – 0.65 0.60 – 0.70
Density Ultra-light (4 kg/m³) Medium (15 kg/m³) Heavy (≥30 kg/m³)
Environmental Safety No dust, no VOC May emit VOC Possible dust irritation
Long-Term Stability Excellent Ages quickly Binder may degrade under heat

5. System Integration Recommendations
Thickness Configuration: 25–50 mm recommended, with a 5 mm air gap for enhanced absorption.
Installation Options: Self-adhesive, mechanical fastening, or aluminum-foil composite backing.
Composite Design: Combine with flame-retardant nonwoven or reflective layers for “sound + heat + structure” multifunctional systems.

6. Green and Sustainable Advantages
YDNFoam™ melamine foam is free from halogens and heavy metals, fully recyclable, and compliant with:
RoHS, REACH, EN45545, and IMO FTP international standards;
LEED and BREEAM green building certification frameworks;
Helps reduce operating noise and thermal load, improving overall system efficiency and sustainability.
🧭 YDNFoam™ 4 kg/m³ transforms noisy equipment into quiet, energy-efficient systems, empowering a new era of industrial acoustic and thermal innovation.

📞 Contact Information
YDNFoam™ | Advanced Melamine Foam Solutions
📍 Address: No. 2088, Jiuliting Avenue, Caoqiao Street, Pinghu City, Zhejiang Province, China
📧 Email: [email protected]
🌐 Website: www.ydnfoam.com
📞 Phone / WeChat: +86-135-4070-2776