Sweetheart Cup Company was a in North America that made paper cups, plastic cups and related products. In 2004, Sweetheart was acquired by the Solo Cup Company.
Sweetheart was founded by Joseph Shapiro and his four brothers, emigrants from Russia to the US. It became the largest consumer packaging company in the world, expanding to three product lines: foodservice, packaging, and consumer.
Sweetheart was sold several times before being acquired by Solo Cups on March 1, 2004.
Robert M. Korzenski, who had been with Sweetheart Cups for over 10 years, became the current CEO of Solo Cup Company in August 2006.