Milk cartonsIn 1929, Sheffield Farms of New York began using Sealcone wax paper cartons instead of glass bottles for milk delivery, using packaging equipment from Sealcone Inc. of New York. These quart, pint and half pint truncated cone containers used a flexible spruce fibre paper rather than a stiff cardboard. The upper end was flattened and hermetically sealed with a metal closure that permitted storage even upside-down. This triangular shape meant two Sealcones used only as much space as one glass milk bottle, with a 94% saving in packaging weight, and at lower cost. Advertisements said they were transparent enough to see the cream line. Borden's plant in New York adopted Sealcones in Feb 1930. Various other designs of single-use wax paper cartons had been devised and used elsewhere before the Sealcone.[Image: from a 1936 advertisement.] |
