Compression Molding of a Non-Woven Porous HVAC Duct for the Automotive Industry

Non-Woven Porous Duct Compression Molding of a Non-Woven Porous Duct

S&A Industries developed this thermo-compression molded, non-woven, porous duct that reduces noise in an automotive HVAC system. The duct, which was designed to reduce the air flow imbalance between inlet and outlet openings, offered a 9 dB improvement from 1000 Hz to 16000 Hz (max blower speed at 12V) to the full blower speed. We used highly specialized software, such as LAMPS/SAPY for noise, SCRYU/Fluent for pressure drop and UG/NX for design to create and model the duct. The porous non-woven polyester used in this S&A duct is 35% lighter than a comparable, 2.5 mm-thick plastic blow-molded duct. The part improved the pressure drop by 10% at 65 cfm and met the standards for automotive interiors. Please see below or contact us directly for more information.

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Compression Molding of a Non-Woven Porous HVAC Duct Project Highlights

Product Description Compression Porous duct is used for noise reduction within a HVAC system of an automobile.
Capabilities Applied/Processes
Non-woven material production
Thermo-Compression molding
Welding, Hot Plate
Piercing
Testing & validation
3D & Modeling capability Software Utilized:
  • Noise: LAMPS/SAPY
  • Pressure Drop: SCRYU/Fluent
  • 3D: Unigraphic / NX
Material Used Non-Woven Polyester
Technical Specifications
Material breathable: 61 l/dm2/min/mbar
Material hydrophobic: Non Treated
Temperature resistant : 95°C
Features / Advantage Weight Reduction compared to molded Plastic part
35 % lighter than a 2.5 mm thick PP part
Designed reduce air flow imbalance between inlet and outlet openings
Recyclable material
Pressure Drop improved by 10% @ 65 cfm
Noise Performance 9 dB improvement from 1000 Hz to 16000 Hz full blower speed

Noise Performance Chart

Industry for Use Automotive (Interior HVAC Duct)
Delivery Location North America
Standards Met Automotive Interior requirements
Product Name Porous Console Blower Duct

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