3M
AEP Industries Inc.
Atlantic Packaging Products Ltd.
Berry Plastics
Brown Paper Goods
Cantar / Polyair Corporation
Cargill
Cascades Tissue Group
Cellucap Manufacturing
Continental Manufacturing Company
Creative Products International (CPI)
Dart Container
Dinex International
Douglas Stephen Plastics 
Duro Bag Mfg. Co.
Earth Straws

Elkay Plastics
Enterprise Folding Box Co., Inc.
Fabri-Kal
Genpak
Georgia-Pacific
Gojo Industries, Inc.
Gordon Paper Company 
Hilex Poly Co., LLC (Vanguard Plastics) 
Hoffmaster / Solo Cup 
Hospital Specialty Company (HOSPECO) 
Huhtamaki (Chinet) 
Inteplast Group, Ltd. (AmTopp) 
International Paper 
McNairn Packaging 
Morcon, Inc. 
NaceCare Solutions

Nashua Rittenhouse
National Checking Company (Adams)
National Chemical Laboratories, Inc.
NILodor, Inc.
Pactiv Corporation 
Sabert 
Shurtape 
Smurfit-Stone
Spartan Chemical Company, Inc.
Stewart Sutherland, Inc. 
Superior Products 
Tacony Corporation (CleanMax) 
Tradex International, Inc. 
WNA Comet East 
Zenex International