A seam resulting from the joining of two portions of a paper roll. When defects appear in paper rolls, the web is typically cut, the offending portion of paper removed, and the rest of the roll spliced back together again. It is crucial that the two spliced sections be perfectly aligned and parallel, and that the unwinding tension across the splice be perfectly even otherwise a web break will occur when the roll is unwound into a web offset press. (See also Splice Failure.)
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