Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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onion skin

A durable lightweight paper that is thin and usually nearly transparent—so called because of its resemblance to the dry outer skin of an onion. It is used for making duplicate copies of typewritten material, permanent records where low bulk is important, and for airmail correspondence. It is produced entirely from cotton fibers, bleached chemical wood pulps, or combinations of these. The fibers of the paper are long and the paper is sized with rosin, starch or glue; it is usually supercalendered or plated to a high finish, or is given a cockle finish. Basis weights range from 7 to 10 pounds (17 x 22�). See also: MANIFOLD PAPER . (17 , 316 )

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