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• The principal methods of binding are: saddle- and side-wire
stitching; case binding (with thread
sewing); adhesive or perfect binding; and mechanical
binding.
•saddle-stitching is for
booklets, brochures, leaflets, and some magazines. After the signatures
have been inserted into one another in the proper order, they are bound
down their common center with staples from a continuous roll of wire
that feeds the stitcher heads. The "saddle" is the part of the binding
line that the pages straddle as they are stitched.
•side-wire stitching is
the same as saddle stitching, except that the staples are inserted
along one edge instead of through the center. It's a simple,
inexpensive method for manuals, directories, etc.
•case binding for
hardcover books begins with gathering the signatures side-by-side (as
opposed to inserting) and stitching them together into "book blocks" in
an operation known as Smyth sewing. Then the book blocks are fitted and
glued into a rigid cover that is known as a "case" because its edges
project beyond those of the book block.
• in adhesive or perfect binding, the binding edge of the book
block is roughened to make it more receptive to the adhesive. The
cover, coated on its inner edge with a hot-melt glue, is then pressed
and held against the book block. This is the usual method for
mass-market and "trade" paperbacks.
•mechanical binding uses
devices such as spiral wire, Wire-O, plastic combs, rings, looseleaf
hardware, and posts to hold documents and publications together. These
methods are well-suited to training materials and other utilitarian
printed products.
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