Jun 26, 2008. /Lesprom.com/. Rock-Tenn Company announced a $65.00 per ton price increase on CartonMate(R) bleached paperboard. The price increase is effective with shipments on July 26, 2008. Rock-Tenn Company is one of North America's leading manufacturers of paperboard, containerboard, packaging and merchandising displays, with pro forma annual net sales of approximately $3.0 billion. The Company operates locations in the United States, Canada, Mexico, Chile and Argentina.