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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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