Online calendering for SC and LWC grades.Online calendering operations are becoming an attractive option for North American mills. The most significant trends are in the snpercalendered (SC) and lightweight coated (LWC LWC Lindsey Wilson College (Kentucky) LWC Liquid Water Content LWC Lightweight Coated paper LWC Language of Wider Communication LWC Lincoln-Way Central LWC Lost Workday Case LWC Leave Word Calling LWC Light Weight Concrete ) grades, which traditionally used offline super-calender technology. This follows the trend of online soft nip calenders being used on woodtree coated (WFC WFC Wi-Fi Connection (Nintendo gaming service) WFC Wide-Field Camera WFC World Financial Center (New York) WFC Workforce Center WFC World Federation of Chiropractic WFC World Food Council ) and fine paper grades. To achieve the desired results on SC and LWC grades, machines need more nips at higher nip intensity. The return on investment (ROI (Return On Investment) The monetary benefits derived from having spent money on developing or revising a system. In the IT world, there are more ways to compute ROI than Carter has liver pills (and for those of you who never heard of that expression, it means a lot). ) for rebuilds or new installations can be more attractive with fine online calendering option. High on the list of advantages are lower operating costs, compared to off machine operations, and lower space requirements, especially for rebuilds. New generation composite roll covers--offering durable polymer covers with significantly improved service life have helped make online calendering possible. These new corms can also handle increased differential loading, allowing the use of zoned type rolls for caliper profile control. Other advances in calender CALENDER. An almanac. Julius Caesar ordained that the Roman year should consist of 365 days, except every fourth year, which should contain 366, the additional day to be reckoned by counting the twenty-fourth day of February (which was the 6th of the calends of March) twice. loading tech nology and online coating technology are making the online alternative more attractive. Many machines in North America have undertaken significant grade changes over the past six years to SC or LWC grades and have chosen online calendering over traditional off-line supercalendering. The most significant installations scheduled for the United States will be Madison Paper's facility in Alsip, Illinois, and Bowater in Catawba, South Carolina, both expected to be completed in 2002.--Mike Molter molt v. molt·ed, molt·ing, molts v.intr. To shed periodically part or all of a coat or an outer covering, such as feathers, cuticle, or skin, which is then replaced by a new growth. v.tr. , TAPPI TAPPI Technical Association of the Pulp and Paper Industry Editorial Board, mmolter@tappi.org, and Mark Sorenson. |
|
||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion