Computerized Traverse Winding for Converted （计算机化遍历转换绕组）.pdf

Article written by Bruce L. Butler VP Independent Machine Co. Fairfield, NJ Computerized Traverse Winding for Converted Materials. No longer just limited to paper, film and foil materials, converting is a critical process for nonwovens and the increasing complexity of laminates. Integrated slitting and computerized traverse winding systems account for a growing segment of the converting industry. Most narrow materials requiring exceptionally long lengths have traditionally been spooled to form a convenient package for handling, shipping and unwinding. The finished spool size varies according to the needs of the next operation [unspooling] or the handling capability of the spooling operation. Regardless of material or spool size each traverse winding operation requires the “traverse” mechanism to either laterally move the material back and forth across the spool or laterally move the spool back and forth under the fixed input of the material being spooled. For flexible materials such as wire, cables, threads, yarns or extrusions that are round moving the material across the spool is the standard spooling method because minimum product “twist” has little affect on product quality. But for flat and profile materials that require consistent lay and cannot tolerate the stress caused by excessive guiding often moving the spool under the fixed input of the material is preferable. This is especially true for wider, flat, tension sensitive materials that operate inline with a slitting, extrusion or texturing operation application. The selection of the traverse type is an important first step in determining the complexity of the overall spooling system. The accuracy of the traversing action, whether moving the material or moving the spool, and selection of the proper traverse pattern is much more critical to the spooling process for converted materials than tubular or round materials. This is the primary reason why traverse winding machinery