International Automotive Components (IAC) Group has introduced a new blow foaming process for production of HVAC duct components. The proprietary process is patented and licensed from JSP, global supplier of foamed plastics.

The innovative process and proprietary material requires that only minor modifications be made to existing blow moulding equipment. Blow foaming is available for air ducts typically manufactured from high density polyethylene (HDPE), which can reduce mass by approximately 50%.

The blow foaming process provides a series of benefi ts, eliminating the need for secondary foaming pieces and reducing the part count required in a typical blow moulding process, thereby reducing manufacturing costs. Additionally, BSR (buzz, squeak and rattle) is reduced, providing improved NVH characteristics due to the part’s improved sound absorption properties - airflow noise is reduced by an estimated 30%.