PPG Provides National Hockey League with Thermochromic Puck
PITTSBURGH — PPG and the National Hockey League (NHL®) announced that official game pucks featuring thermochromic coatings supplied by PPG will be in play at the 2019 Bridgestone NHL Winter Classic® at Notre Dame Stadium on New Year’s Day.
The advanced coatings change from purple to clear when a puck’s temperature is above freezing, providing a visual indication to officials that the puck should be replaced. The coated pucks will be tested at NHL tentpole events during the 2018-19 season and will be further evaluated for broader use in the future.