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Corrugated cardboard specifications

Updated February 21, 2017

Corrugated cardboard serves as a durable, lightweight and economical material used primarily for packaging, along with unconventional applications ranging from toys to advertising displays to furniture. One of the least expensive containers ever developed, corrugated cardboard boxes ship more than 95 per cent of U.S. products, reports the American Forest & Paper Association.

History

Corrugated paper appeared in the mid-1800s as a liner that stiffened hats. Its first use in packaging, in 1871, provided a protective wrap for glass bottles and chimneys. A sheet of heavier facing adhered to either side of pleated paper become the first corrugated cardboard boxes.

Identification

Each sheet of corrugated cardboard contains at least three layers of heavy paper called containerboard. Smooth layers on the outside make liners or linerboard, while the wave-shaped layer in the middle creates the corrugating medium, or fluting. Conventional thicknesses range from 1/32- to 1/4-inch; combining two or three boxes forms double- or triple-wall cardboard.

Strength

Paper fluting forms a series of connected arches that support many times their own weight -- especially when arches' ends anchor to a paper facing, acting like springs or cushions to resist crushing and impact. With a high strength-to-weight ratio, structural rigidity and excellent tear, tensile and burst strength, corrugated cardboard makes a superior packaging material.

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About the Author

Ann Salter began writing professionally in 2010 and has worked extensively in the fields of art, architecture and design since 2004. Her work has appeared in informative guides on student housing cooperatives and sustainable building alternatives. Other areas of specialty include technology, health, gardening and cooking. Salter holds a Bachelor of Architectural Studies from the University of Waterloo.