Water-assisted injection molding has been deployed for the first time in Japan to manufacture water pipes in an automotive application. Toyota-affiliated Tier 1 Toyoda Gosei (Kiyosu, Japan) is utilizing the technology to mold the coolant pipes for the intercooler of the turbocharger engine in the Lexus NX, which was released in July 2014.
Coolant pipes for the intercooler of the turbocharger engine in the Lexus NX are molded using water-assisted injection technology.
While not going into detail regarding the materials employed in the pipes,. Toyoda Gosei does say that it has employed in-house compounding technology to formulate appropriate grades for the application that "display sufficient durability against coolants." Other processors have employed a special grade of Ultramid A3HG6 WIT polyamide (PA) developed for the process by BASF (Ludwigshafen, Germany) in similar applications. Last year, BASF introduced new grades for the process.