When Fred Daunno sat down to design a party invitation, he never thought the graphic would become a worldwide symbol for his company. Around 1982, at the request of Tupperware’s company president, ...

Tupperware _ and its patented burping semi-vacuum seal _ turns 50 this year, along with the first of the post-World War II baby-boom generation who grew up drinking from Tupperware plastic tumblers, ...