bulk
1. The thickness of the gathered leaves or
sections of a book before sewing, or the thickness
of the bound book before its covers are attached,
or before casing-in. 2. The thickness of a sheet
of paper in relation to its weight. With two
papers of equal weight per ream, the one which
"handles" the thicker is said to "bulk" the
better. 3. The thickness of a specified number of
sheets of paper or board under a specified
pressure. Bulk here is important in gauging the
thickness of a proposed book. 4. In papermaking in
its most correct meaning, "bulk" is the ratio of
fiber volume of a sheet to total volume, including
air spaces which may be void or filled with
loading or sizing materials. See also: BULK EQUIVALENTS .
(17 , 234 , 261 , 264 )
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