Foam Duct

Compared with traditional metal and glass fiber ducts, Foam Duct, leveraging its core advantages of "lightweight structure + integrated performance", stands out as the preferred solution for energy-efficient buildings, commercial spaces, and special environments due to its excellent ventilation efficiency, easy installation, and superior energy-saving performance.

What Is a Foam Duct?

1. Core Foam Material

Polyurethane (PU) Foam: The most widely used core material with a closed-cell honeycomb structure. Its thermal conductivity is as low as 0.02W/m·K, making it one of the materials with the best thermal insulation performance for ducts. It also features excellent sound insulation and waterproof properties, with a water absorption rate ≤ 0.1%, effectively preventing mold growth caused by condensed water.

Polyisocyanurate (PIR) Foam: Outstanding high-temperature stability, maintaining consistent performance within a wide temperature range of up to 80℃, suitable for HVAC system applications in extreme environments.

2. Composite Protective Structure

To enhance durability and functionality, the surface of foam ducts is usually laminated with a special protective layer, forming a "protective layer + foam core + protective layer" sandwich structure:

Inner/Outer Layer: Mostly made of 60-80μm smooth aluminum foil or 150-200μm embossed aluminum foil, providing corrosion resistance, moisture resistance, and enhanced rigidity. Some products adopt antibacterial aluminum foil to improve indoor air quality.

Key Properties of Foam Duct(The Core Advantage)

1. Outstanding Physical Properties

Lightweight yet High-Strength: Density is only 1/10 of traditional metal ducts, with compressive strength exceeding 0.25MPa. It reduces building structural load while ensuring system stability.

Superior Thermal Insulation: Thermal conductivity as low as 0.020W/(m·K). The one-piece molding structure eliminates cold bridges and prevents condensation.

Excellent Air Tightness: Seamless integrated manufacturing process results in an air leakage rate of less than 1%, significantly improving energy efficiency.