Earl Tupper

Earl Tupper, a New Hampshire inventor, turned polyethylene slag from a DuPont plant into flexible food containers in 1946, with an airtight lid modelled on the inverted rim of a paint tin. Shops struggled to sell them until Brownie Wise developed Tupperware home parties from 1948, demonstrating the seal in people's kitchens. The shape and the selling method together made plastic storage an everyday object.