Automotive HVAC air ducts distribute heated or cooled air throughout the vehicle cabin, requiring airtight joints to prevent air leakage and ensure efficient temperature regulation. These ducts are made of lightweight plastics like PP and PE, with complex 3D shapes that demand a flexible welding process. Traditional hot plate welding may cause material deformation, while adhesive bonding requires long curing times. DaokeDao plastic laser welding provides a flexible, low-thermal-impact solution for HVAC air ducts. The laser energy is precisely focused to create airtight welds (leakage rate ≤0.05m³/h), maintaining efficient airflow (airflow resistance ≤10Pa). The non-contact process avoids material deformation, preserving the duct’s complex shape and dimensional accuracy. It forms a strong bond (shear strength ≥14MPa) that withstands vibration and temperature changes (-30°C to 80°C). Our systems support automated welding of complex duct contours, with fast cycle times (12-16 seconds per unit) and high-volume production (up to 80 units/hour). By reducing air leakage, DaokeDao laser welding helps automakers improve HVAC efficiency and reduce energy consumption.
