Compression Molding of a Non-Woven Porous Air Intake System Duct for the Automotive Industry​

S&A Industries manufactured a porous, air-intake system (AIS), noise-reduction duct that meets automotive environmental and engine compartment requirements. The non-woven, compression-molded, recyclable polyester used in the duct reduces engine noise. Permeability can be adjusted to change its acoustic performance and it offers excellent temperature resistance. The porous part also weighed less than a molded plastic part and featured a water drain valve and is hydrophobic treated.

The duct was created using highly specialized software, such as LAMPS/SAPY for noise, SCRYU/Fluent for pressure drop and NX Unigraphics for design. We diligently tested and validated the parts and offered global delivery. For more information, please contact us directly.

Compression Molding of a Non-Woven Porous Air Intake System Duct Project Highlights

Product DescriptionA compression molded fiber material is used for automotive air intake systems to attenuate noise propagated from the engine.
Capabilities Applied/Processes
  • Non-woven material production
  • Thermo-Compression molding
  • Welding, Ultra Sonic, Vibration
  • Component Assembly
  • Testing & validation
3D & Modeling capabilitySoftware Utilized:
  • Noise: LAMPS/SAPY
  • Noise: LAMPS/SAPY
  • Pressure Drop: SCRYU/Fluent
  • 3D: NX Unigraphics
Material UsedNon-Woven Polyester
Technical Specifications
  • Material permeable 45 l/dm2/min/mbar
  • Material hydrophobic: TBD
  • High temperature resistant: 3 Kpa @ 110°C
Features / Advantage
  • Material can be tuned in permeability to change the acoustic performance
  • Weight Reduction compare to Molded Plastic part
  • Water Drain Valve incorporated in the duct
  • Recyclable material
Noise PerformanceNoise Performance Chart
Industry for Use Automotive
Delivery Location Globally
Standards MetAutomotive Environmental and Engine Compartment requirements
Product NamePorous Air Intake System (AIS) Noise Reduction Duct