By Orang Vahid, Ph.D., dir.-Application Engineering, Maplesoft; and Steve Lange, managing member, ProcessDev LLC Due to increased demand for consistent quality and faster turnaround times when ordering new web-handling systems, machine designers are turning to simulation to stay ahead of the competition. Simulation models that include dynamical aspects have the advantage … [Read more...] about The role of new system-level simulation in solving difficult web-handling design problems
Web Handling
Using zero-speed splice unwinds in web-handling operations
By Neal Michal, principal, Converting Expert LLC There are several advantages of zero-speed splice unwinds in web-handling operations. Among these are a consistent, high-quality splice that rarely fails and a wide array of splice types. The real-world tension dynamics for a zero-speed splice will be presented in this article. A methodical approach to analyze each phase are … [Read more...] about Using zero-speed splice unwinds in web-handling operations
Improve a zero-speed splice unwind process by learning to reduce tension disturbances
By Neal Michal, principal, Converting Expert LLC This last installment will present tension dynamics obtained from a representative zero-speed splice event. Recall that the splice takes place while the downstream process runs at full speed. The tension dynamics are repeatable and will be described in phases. A procedure to set up an unwind will be explained. Seven additional … [Read more...] about Improve a zero-speed splice unwind process by learning to reduce tension disturbances
How to achieve tight toleranceswith the wrap shear-slitting process
By John Marold, applications engineer & slitting specialist, Parkinson Technologies, Inc. Introduction In the world of slitter/rewinders, achieving a tight slit-width tolerance is essential to the operating process for many applications. To ensure such a tight tolerance is achievable, proper alignment and minimal movement leading up to the slitting of the final … [Read more...] about How to achieve tight toleranceswith the wrap shear-slitting process
Converting-machinery operation: Addressing operator safety and achieving the “zero-touch” target
By Giancarlo Caimmi, Ph.D., commercial dir., Nordmeccanica USA Group Historical background My early days in an engineering department were spent in a flexographic printing-press factory. At the time, that company was one of the two largest in the world, and its products were distributed worldwide with our primary markets being North America, South America and Europe. That … [Read more...] about Converting-machinery operation: Addressing operator safety and achieving the “zero-touch” target