Prediction of WVTR with General Regression Models, 2007 European PLACE Conference

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In this study, general regression models are used to predict moisture barrier properties of extrusion coated papers in different atmospheric conditions. Basically, water vapour transmission rates (WVTR) of different polymers are affected by three factors: coating weight (or squared mass) of a studied polymer, temperature and moisture concentration of surroundings. Regression models find mathematical connections between WVTR and these variables making WVTR analysis even more effective in determining moisture barrier properties of studied polymers. As a result of the study, a practical computer program is established where WVTR of extrusion coated paper is predicted as a function of user-defined temperature, relative humidity and coating weight.