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
2023 Quarter 3
Casting, coating and chemistry behind membrane production
By Mark Miller, CEO, Coating Tech Slot Dies LLC Something so simple shouldn’t be complex. When you think about water, it seems abundant and clean; readily available; and simple, clear and overlooked. But take notice of this complex industry. As viable drinking water has become more necessary at larger volumes, purifying the existing supply has developed a higher demand for … [Read more...] about Casting, coating and chemistry behind membrane production
Achieving packaging-simplification and sustainability initiatives with new oxygen-barrier coatings
By Jay Downey, coatings business development mgr.-Flexible Packaging, Sun Chemical Corp. Packaging that delivers strong product protection is essential for meeting consumer expectations that food is as safe and long-lasting as possible. Creating flexible packaging that meets these demands for enhanced food safety and shelf life, as well as achieving cost-effective … [Read more...] about Achieving packaging-simplification and sustainability initiatives with new oxygen-barrier coatings
The physics behind drying of pressure-sensitive adhesives
By E.J. (Ted) Lightfoot, Ph.D., principal consultant, Ted Lightfoot LLC There are many kinds of pressure-sensitive adhesives (PSAs) (e.g., aqueous emulsions, solvent-borne, hot-melt and curable 100% solids adhesives). Aqueous emulsions and solvent-borne PSAs require drying before lamination. Drying proceeds through various distinct stages – in most cases a “constant rate … [Read more...] about The physics behind drying of pressure-sensitive adhesives
Converting from chrome to ceramic anilox rollers for gravure and coating applications
By Bill Poulson, global technical solutions mgr., Harper Corp. of America This article will discuss the pros and cons of the chrome anilox to ceramic anilox rollers conversion. While there are times when converting to ceramic may not be a good fit, the wear resistance of ceramic is many times more than chrome. The geometry and volume capabilities of both technologies, as … [Read more...] about Converting from chrome to ceramic anilox rollers for gravure and coating applications