Crews were dispatched out around 11:15 Friday morning and are still on scene according to officials at the fire department.
NewsChannel 15 is still waiting to confirm details of the fire, including its size and where it started.
In April, there was a fire at the Sonoco plant, but firefighters were able to put it out quickly.
According to Sonoco's website, the company has more than 300 operations in 35 counties and produces packaging for a variety of industries and many of the worlds most recognized brands, serving customers in 85 nations.
NewsChannel 15 will keep you posted on the situation as soon as more information becomes available.