Detroit — General Motors Co. won the grand prize in the Plastics for Life Global Parts Competition for a thick polycarbonate light bar for LED styling in headlamps on the 2019 GMC Sierra 1500 pickup truck. The "sculpted ice" light bar uses a novel light-pipe design that incorporates special multishot thick molding, tooling and processing.
The Society of Plastics Engineers named the winners of the Plastics for Life awards during SPE's Antec 2019 conference, held March 18-21 in Detroit.
For the grand prize-winning part, Valeo Lighting Systems is the Tier 1 supplier. GM used Covestro LLC's crystal polycarbonate. The mold maker is Proper Group International Inc. Because of the large, complex shape of the part, the tooling required a modified surface plus a special ejection design to properly eject the thick light bar.
The light bar was a winner at the 2018 SPE automotive division's awards gala.
Judges selected the Plastics for Life winners from among parts that had already won in competitions at SPE conferences during the past year. Products winning the Plastics for Life competition were deemed to make people's lives better in some way.
A People's Choice Award was also presented to the part that gained the largest number of votes by Antec attendees. At the Detroit Antec, the winner was a 6-gallon container, called a carboy, used in fermenting in the brewing industry. The wide-neck container is blow molded from HDPE to replace glass carboys, which can break and also have narrow necks that are hard to clean.
TricorBraun Inc. had submitted the part for the parts competition at the SPE's Annual Blow Molding Conference on behalf of Brewcraft USA. The blow molder is Western Case Inc. of Riverside, Calif.