Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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wet-strength paper

A paper which, even when saturated with water, has an unusually high resistance to rupture or disintegration. This property is produced by subjecting the paper or the fibers from which the paper is made to chemical treatment. Wet strength. which is most evident and significant when it occurs in absorbent papers. should not be confused with water repellency or the resistance of paper to wetting when exposed to water. Normally, a paper loses most of its strength when saturated with water, and one which retains more than 15% of its dry strength when completely saturated with water may correctly be referred to as a "wet-strength paper." A very superior wet-strength paper may retain as much as 60% of its dry strength when wet. (17 , 42 )

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