IPST is pleased to welcome its newest member, KapStone Paper and Packaging Corporation.  KapStone, formed in April 2005 and headquartered in Northbrook, Illinois employs 4,500 people.   KapStone is a leading North American producer of unbleached Kraft paper and corrugated products. The Company is the parent company of KapStone Kraft Paper Corporation and KapStone Container Corporation. KapStone's mills produce Kraft and recycled products including liner and medium containerboard, Kraft papers, saturating Kraft, and folding carton board.   Branded products include Kraftpak.®, DuraSorb® , TEA-Kraft® and FibreShield®. KapStone's corrugated packaging business produces fully equipped corrugated box plants, sheet plants, and sheet feeders providing industrial and retail corrugated packaging solutions for diverse customers.