This process forms staples in the spine fold of the publication which are clinched on the inside fold of the centermost pages. Īs the publication travels along the conveyor, it meets the stitcher, which pushes metal wire from a spool down through the outside of the spine fold and back up through the other side. This part of the binding process is where saddle stitching gets its distinctive name. The publication travels along the apparatus with its outer spine facing up and each side of the publication hanging over the sides like legs on a saddle. This creates a small lap which aids the machine in opening the unbound publication to the centerfold, assuring each publication is correctly pulled onto the stitcher’s conveyor. The groups of folded pages, known as signatures, are intentionally printed and folded to be longer on one edge than the other. A heavy arm applies a final fold, called the knife fold, to the parent sheets along the fold line with great pressure. The folding process ensures crisp, precise folds along the spine. The cover of the publication is usually combined with the parent sheets, so long as the substance of the cover is able to be folded alongside its pages. The parent sheets are sent into gates in a folder machine which are set to the proper fold size for the sheets. Once a publication’s parent sheets leave the printing press, a gatherer organizes the sheets into the correct sequence. In commercial printing, saddle stitching varies between machinery and binderies, but the basic process in a saddle stitching line is as follows. After trimming, the end product is a sleek, softcover publication bound with staples through its spine. In this binding process, sheets of printed paper are folded and nested together, then metal wire is stitched through the fold line to create the spine. Saddle stitching, also called the two-wire stitch or stapled spine, is a popular, cost-effective binding method widely used for thinner magazines, catalogs and booklets. In this series, we explore how different binding processes are performed in a commercial setting and how they affect the final product. From the look to the weight to the longevity of the finished publication, it’s important to know how each binding technique can suit the unique needs of your publication and differentiate you from the competition. There’s so much more to binding than just paperback or hardcover.
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