Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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cross direction

The direction of a machine-made paper, which is at right angles to the MACHINE DIRECTION , i.e., the direction across the direction in which the web travels. The cross direction of paper generally has less strength and folding endurance than the machine direction, although, in some papers, after aging, the opposite may be true. The cross direction has greater tearing resistance, and paper also expands more in the cross than in the machine direction when the moisture content of the paper increases. See also: AGAINST THE GRAIN ;ANISOTROPIC BEHAVIOR .




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