Canning novelty. Early methods of manufacture employed poisonous lead solder for sealing the cans. Studies in the 1980s attributed the lead from the cans as a factor in the disastrous outcome of the 1845 Franklin expedition to chart and navigate the Northwest Passage. Later studies found this to be false. Increasing mechanization of the canning process, coupled with a huge increase in urban populations across Europe, resulted in a rising demand for canned food. A number of inventions and improvements followed, and by the 1860s smaller machine-made steel cans were possible, and the time to cook food in sealed cans had
Campbell's Soup Cans Campbell's Soup Cans Campbell's Soup Cans, which is sometimes referred to as 32 Campbell's Soup Cans, is a work of art produced in 1962 by Andy Warhol. It consists of thirty-two canvases, each measuring in height × in width and each consisting of a painting of a Campbell's Soup can—one of each of the canned soup varieties the company offered at the time. The individual paintings were produced by a printmaking method—the semi-mechanized screen printing process, using a non-painterly style. "Campbell's Soup Cans"' reliance on themes from popular culture helped to usher in pop art as a major art movement