Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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A fine, smooth, hygroscopic textile fiber made from various solutions of modified cellulose, such as wood pulp or cotton linters. The rayons were among the first, if not the first, of all the man-made fibers considered for use in papermaking from which simulated paper structures were produced on conventional papermaking equipment. Rayon fibers are among the better synthetic papermaking fibers because: 1) they are far less expensive than most of the organic or inorganic synthetic fibers; 2) being cellulosic, and, therefore, compatible with water slurries of other cellulosic fibers, they can be handled by conventional papermaking equipment and techniques; and 3) they have most of the inherent advantages of synthetic fibers, such as control of denier, length, strength, elongation, cleanliness, and optical uniformity.

The compatibility of rayon fibers with less expensive pulp furnishes, as well as the ease with which their diameters can be controlled, make them useful for adding bulk to paper when an improvement of porosity is required. In addition, their cleanliness, strength, and bulking properties also make them valuable components in saturating papers. (42 , 143 )

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