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Title
Evaluation of coated paper quality using a Plackett-Burman statistical design
Authors
Sanjay Tyagi and A. K. Ray
Received
December 14, 2009
Published
Volume 44 Issue 9 September-October
Keywords
coating, statistical design, precipitated calcium carbonate, brightness, talc, gloss
Abstract
Paper is pigment-coated to produce a more uniform and more receptive surface for printing ink, thus assuring better graphic reproduction. A large number of variables, involved in coating processes, interact with each other. To perform coating experiments on indigenous base papers in a most systematic way, with many variables, statistically designed experiments – based on a Plackett-Burman design – have been carried out to examine the effects of different process variables. The variables considered were the following: dosages of china clay, talc, natural and precipitated calcium carbonate, binder, as well as total solids of coating color and thickener dosage (water retention chemicals). Based on such experiments, the effects of the above process variables on different properties of coated paper were identified.
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