General view of a saran bubble as it is extruded from a machine during the production of saran film at the Dow Chemical Company plant in Midland, Michigan. The individuals visible behind the bubble, likely taking a tour of the plant, are unidentified. During production, saran film passed through a series of rollers, which deflated the bubbles and prepared the film for winding on rolls. Initially developed for the U.S. Army to wrap arms and equipment for transport during World War II, saran plastic was subsequently developed and marketed as Saran Wrap for household use.