 Those companies bear little resemblance to the company today, as they operated paper mills that exclusively produced cardboard boxes.Tenneco Inc. purchased PCA in 1965, and during the next 34 years the company undertook a number of acquisitions, including the acquisition of Mobil Plastics Company in 1995 and Amoco Foam Products Company in 1996, which formed the basis of the current Pactiv business.As a result, its product portfolio expanded to include aluminum, clear plastic, foam products, molded fiber and pressware.