Newsprint and Improved Quality
High-speed presses demand flat profiles and superior roll conditions
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The new high-speed (5000 fpm) and high-capacity processes require an extremely uniform sheet. When producing a product at an annual rate of 400,000 tons, tight control of MD and CD variability is a must. The modern generation of dilution (consistency profiling) headboxes provide a level base sheet entering the press section. The new high-performance presses are designed with a narrow zone, 50 mm, steamshower integrated into the press section. These provide good weight and moisture profiles entering the unirun section. The final dyer section contains a VIB AirTech spraydampening system with 25 mm (1 inch) zone spacing. This narrow spacing is required to achieve the profile variability necessary to run at world-class throughput rates. |
The newsprint papermakers have enhanced this technology to achieve the required improvement in quality and efficiency necessary to compete in the news communication market place. The end user enjoys the portability and ease of use and current news they receive from a newspaper. However, the newspaper must maintain its cost competitiveness and performance to maintain and increase its market share. Today's advanced technology provides the tools necessary to accomplish this with the existing base of operating production lines. Page |
