Kerr Group is a leading provider of specialty plastic closure products to the pharmaceutical and food and beverage industries in North America. Kerr designs and manufactures highly engineered, proprietary, injection-molded plastic closures that incorporate functional features such as child resistance and tamper evidence. Kerr is recognized as a market leader in technological innovation. Kerr proactively works with many of its customers to design and manufacture closures to serve its customers' specific product needs. In the pharmaceutical market, Kerr partners with its customers in designing packaging to secure Food and Drug Administration approval.

Calera Capital acquired the outstanding shares of NYSE-listed Kerr through a public tender offer in August 1997. Kerr subsequently acquired Sun Coast Industries, Inc., a manufacturer of specialty plastic closures, in March of 1998, and McCormick & Company's packaging business, Setco, Inc. and Tubed Products Inc., in August of 2003. Calera Capital sold Kerr to Berry Plastics Corporation in June 2005.