Corrugated Cardboard

Corrugated fiberboard, commonly called corrugated cardboard or corrugate, is a paper packaging material made of a fluted corrugated sheet glued between one or two flat linerboards, manufactured on large precision machines called corrugators and used to make corrugated boxes. Corrugated paper was first patented in England in 1856 as a liner for hats, and Albert Jones of New York City patented single-faced corrugated board in 1871 for protecting bottles and glass lantern chimneys; G. Smyth built the first large-scale production machine for it in 1874, and Oliver Long then invented a double-sided liner sheet, giving the material its modern form. By the mid-1950s, corrugated fiberboard had transformed the shipping of produce, letting fruits and vegetables reach retailers undamaged and helping growers reach export markets, and measurable properties such as moisture content, burst strength, edge crush resistance and box compression strength are used to engineer boxes for the specific products they carry, with old corrugated containers serving as a major source of recycled fiber.