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Reducing brightness to make a better paper

the range from 82 to 95. A brightness index of 90 or above is commonly associated with "high quality" papers. Some manufacturers add fluorescent compounds to the paper's surface to increase brightness even above 100 percent. At least one major store chain advertises paper with a brightness index of 113.

Because pulp must be bleached at least five points higher than the final paper brig......

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Source:wistechnology.com By WTN News 08/31/05


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