Sep 05, 2008. /Lesprom.com/. Smurfit-Stone has become the fourth major North American producer to inform customers of a $60/ton containerboard price increase for October, following closely on the heels of this summer's $55/ton price increase, RISI reported. Smurfit-Stone is a leading producer of containerboard, including white top linerboard and recycled medium, kraft paper, corrugated containers, and point-of-purchase displays.