Solo Cup Company

Solo Cup Company
Company type	Private (acquired by Dart Container)
Industry	Disposable consumer goods
Founded	1936
Founder	Leo Hulseman
Fate	Acquired by Dart Container on May 4, 2012
Headquarters	Lake Forest, United States
Key people	Robert M. Korzenski (CEO since 2006), Robert Leo Hulseman (former president)
Products	Disposable cups, plates, bowls, tableware
Parent	Dart Container

Solo Cup Company is an American manufacturer specializing in disposable consumer goods such as cups, plates, and bowls for beverages and food service. Based in Lake Forest, Illinois, the company recorded revenues of $2.4 billion in 2006. On May 4, 2012, Solo Cup became part of Dart Container, broadening Dart’s range of disposable tableware products.

History

Established in 1936 by Leo Hulseman, a former employee of Dixie Co., Solo Cup initially produced a paper cone designed for bottled water distributors. During the 1950s, the product assortment grew to include wax-coated cups aimed at the expanding fountain soda industry. The business was incorporated as Hulseman Paper Corporation in 1955 and gradually emerged as a prominent player in the disposable tableware market.

In the 1970s, Robert Leo Hulseman, Leo’s son and credited with inventing the famous red Solo cup, introduced a sturdy, stackable polystyrene cup that gained widespread adoption across the United States due to its cost-effectiveness.

Key corporate developments involved the merger on June 30, 1980, when SOLCO, Inc. and RM LEASING CORPORATION were consolidated into Solo Cup Company. A significant acquisition took place on March 1, 2004, when Solo purchased Sweetheart Cup Company for $917.2 million, partially funded through public debt issuance. Founded by Joseph Shapiro and his brothers, Sweetheart was an international leader in consumer packaging. However, this transaction placed financial pressure on Solo Cup, leading Standard & Poor’s to downgrade its credit rating from B to CCC+ by 2006 amid concerns over $1.1 billion in debt.

Solo’s design innovations have garnered institutional recognition; notably, New York City’s Museum of Modern Art added the Solo Traveler's Lid to its permanent collection in 2005, reflecting the company’s commitment to product design excellence.

In December 2009, Solo shut down its long-operating Highland Park plant and transferred operations to Lake Forest, Illinois. The acquisition by Dart Container in 2012 enhanced Solo’s market position and expanded Dart’s footprint in the global disposable products sector.

Founder

Leo Hulseman (1898–1989), known also as an avid polo player, established Premore Inc., a television production firm active from the 1970s until the early 1990s. Premore created children’s programming including Tony the Pony and The Cliffwood Avenue Kids, along with shows such as The Real West and Candid Camera. The company’s studios also supported Dora Hall—Leo’s wife and a singer celebrated for her TV specials and recordings released on Premore, Reinbeau, and Cozy Records labels. Premore ceased operations in 1993, four years following Leo Hulseman’s passing.

Later leadership

Robert Leo Hulseman, who developed the iconic red Solo cup and was Leo’s son, held the presidency until his death in 2016. Since August 2006, Robert M. Korzenski has served as CEO, bringing extensive experience acquired from over ten years at Sweetheart Cups.

Customers

Solo Cup counts among its major clients Starbucks, Dairy Queen, Così, Walmart, Whole Foods Market, Einstein Bros. Bagels, Publix, Tim Hortons, and various universities. The red Solo cup holds a prominent place within American college culture as a favored item for games like beer pong and flip cup, reinforcing strong brand visibility. Its cultural significance is further highlighted by Toby Keith’s 2011 song "Red Solo Cup." Despite competition from similar products by other brands, the red cup significantly outsells its blue counterpart. Additionally, Solo is known for the Jazz cup design—originally acquired through Sweetheart—and occasionally referred to as "Solo Jazz."

Interpretation of Cup Markings

There is a widespread notion, particularly on the internet, that the horizontal lines on the classic 16-ounce Solo cup correspond to standard alcohol serving sizes—1 ounce for spirits, 5 ounces for wine, and 12 ounces for beer. Nonetheless, Solo has clarified that these markings are not officially intended to represent specific measurements and that many cup models do not feature these lines. According to Dart Container Corporation, the purpose of these markings is related to optimizing cup functionality rather than indicating precise volume levels.

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