HOUSTON, TX (December 30, 2011) – The Sterling Group (“Sterling”), a Houston based private equity investment firm, today announced that its affiliated investment fund, Sterling Group Partners III, L.P., has completed the acquisition of the Liqui-Box Corporation (“Liqui-Box”) from DuPont. The acquisition is Sterling’s third investment in its third fund, an $820 million fund raised in 2010. Liqui-Box is the twenty-first corporate carve-out in Sterling’s thirty year history and the fourth business Sterling has acquired from DuPont. Headquartered in Worthington, Ohio, Liqui-Box is a leading supplier of bag-in-box flexible packaging to the global dairy, beverage and bulk food markets. Bag-in-box packaging is primarily used in the foodservice industry to package dairy mix for milkshakes and coffee drinks, fountain beverage syrup …