Thanks to its excellent products and quality services, UNT Duct is one of the leading lightweight pu air ducting manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.
Lightweight PU Air Ducting
Lightweight PU Air Ducting, alternatively designated PU aluminum foil duct panel and PU sandwich duct panel, is a high-spec composite material intended for HVAC (Heating, Ventilation and Air Conditioning) air duct applications.
The product adopts a trilaminar laminated structure composed of:
Dual outer facings: High-tensile aluminum foil, supplied in plain or embossed variants
Internal core substrate: Rigid polyurethane (PU) foam, functioning as structural backing and thermal insulating medium
Compliance Standards and Environmental Attributes of Lightweight PU Air Ducting
Safety Compliance: The fire resistance rating reaches non-flammable B1 level. It complies with international standards such as GB 8624-2012 and EN 45545, and the smoke toxicity meets the standards.
Environmental Safety: It does not contain harmful substances such as CFC, formaldehyde, and free benzene. It meets the environmental limit standards for building insulation materials and is green and pollution-free.
Scene Restrictions: It is not suitable for acidic or alkaline environments and smoke exhaust and prevention systems. In high-pressure scenarios, specialized reinforced products need to be selected.
How to make Straight Ducts with Lightweight PU Air Ducting
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Tools: Pre-insulated Duct Cutting Tools Kit, including V cutter.
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Method: Boards are scored, folded, and assembled into rectangular; joints sealed with pressure-sensitive aluminum foil tape or water-based acrylic adhesive.
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Support: While rigid enough for low-to-medium static pressure (typically ≤ 1500 Pa, or 6″ w.g.), ducts require proper hanging supports per manufacturer guidelines.
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