Blow moulding for the manufacture of plastic air ducts
Plastic air ducts manufactured using 2D extrusion blow molding or 3D suction processes are widely used in vehicle ventilation and air‑conditioning systems. Their light weight, discreet integration, strength, and safety make them perfectly suited to today’s mobility requirements, whether for light commercial vehicles (LCV), passenger vehicles (PC), agricultural machinery, or construction equipment.
MANUPLAST co‑designs and manufactures custom air ducts, developed according to integration constraints and operating environments. Our expertise is based on advanced mastery of plastic processing technologies and an approach focused on reliability, durability, and performance. We support both new developments and production transfers for parts already in series production.
Types of Blow Molded Ducts
Manufacturer of cabine ventilation ducts for vehicle interiors
Ventilation ducts ensure air renewal and extraction within the various cabin compartments. They directly contribute to:
- thermal comfort,
- air quality,
- proper operation of ventilation systems,
- compliance with integration constraints under the dashboard or within interior trim components.
MANUPLAST develops custom ventilation ducts tailored to each application. We provide expertise in material selection, geometry design, thermal resistance, and mechanical strength.
Extrusion blow molding and 3D suction processes enable the production of complex shapes, perfectly suited to confined environments, while helping to reduce vehicle weight without compromising reliability.
Manufacturer of plastic air ducts for air conditioning systems
Distribution ducts ensure the routing and distribution of treated air within ventilation and air‑conditioning systems. They play a key role in:
- airflow performance,
- flow control,
- occupant comfort,
- integration into areas with high component density.
MANUPLAST supports the design and manufactures distribution ducts adapted to the specific constraints of each vehicle. 2D extrusion blow molding and 3D suction technologies make it possible to produce lightweight, robust, and durable ducts, even in environments subjected to significant temperature variations
Manufacturer of cooling Ducts
Ducts dedicated to glove‑box cooling allow cooled air to be routed to specific cabin compartments. MANUPLAST supports the industrial development of these ducts by leveraging its expertise in plastic processing, ensuring:
- design feasibility,
- process repeatability,
- reliability in series production.
Ventilation duct for the dashboard, door panels, headliner and roof
In addition to conventional ventilation and distribution ducts, MANUPLAST also develops air ducts integrated into interior trim components, which are essential for thermal and acoustic comfort.
Dashboard Ducts (IP ducts)
These ducts distribute air to central and side air vents. They must meet stringent constraints:
- integration within very limited spaces,
- complex geometries,
- mechanical and thermal resistance,
- compatibility with dashboard assembly systems.
Our technologies enable the production of lightweight, rigid, and perfectly airtight ducts, well suited to modern vehicle architectures.
Door Trim Ducts
These ducts route air to vents integrated into vehicle doors. They require:
- high design flexibility,
- resistance to vibration,
- dimensional stability despite temperature fluctuations,
- discreet integration within trim panels.
Extrusion blow‑molding processes allow the production of thin, lightweight, and robust ducts, perfectly adapted to tight packaging constraints.
Air duct for vehicle ceilings and roofs
Used in particular for 7 seat vehicles, light commercial vehicles, or premium versions, these ducts distribute air to the rear rows. They must ensure:
- uniform air distribution,
- invisible integration into the headliner,
- mechanical strength despite duct length,
- minimal weight to avoid adding mass to the roof.
Our solutions enable the production of long, rigid, and aerodynamically optimized ducts, while maintaining tight weight control.
