Polyphenylene sulfide (PPS) resin is being employed in a gas-assisted injection molding process to reduce weight and costs of tubular cooling system parts for automotive engines. The Fortron material is supplied by Celanese Corporation (Irving, TX) is and molded by IVP Plastics (Washington, IL).
“Celanese has a long relationship in working with IVP Plastics to solve material challenges, especially those found under the hood. Fortron PPS excels in these extreme heat and aggressive operating conditions that are pushing material limits,” says Edward Hallahan, Fortron PPS global marketing manager for Celanese.
PPS resin and processing expertise helps to advance gas-assist injection molding.
Auto designers and engineers are looking for new material solutions that will help them meet fuel economy and emission standards. As engine compartments are becoming smaller and more compact, traditional metal tubing and rubber hoses are no longer an option.
“Our unique application of gas-assist molding technology can create a one-shot injection-molded, non-linear hollow shape with 90 degree turns and molded fastening points,” says James Mechowski of IVP Plastics. “Glass-filled, low-viscosity Fortron PPS is the ideal solution from a molding and performance perspective.”
The IVP Plastics molding process reportedly reduces steps in the manufacturing process; eliminates traditional welding, brazing and plating processes; provides a more dimensionally accurate component with no chance of rust; and reduces component cost and weight by as much as 50 percent.
“Celanese has a long history of working with global OEMs and tier suppliers on powertrain and underhood applications,” says Bob Newill, Celanese application development manager for powertrain systems. “Fortron PPS is a proven, high-temperature, chemical resistant material. In this application, Fortron PPS provides cost savings via lower reject rates, reduction in number of fabrication steps, shorter cycle times and higher process reliability.”