Variance Partition Analysis-Starting Point for Profile Optimization, 2007 TAPPI Papermakers and PIMA International Leadership Conference
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Sixty years after the first publications on variance partition analysis (VPA) it is necessary to reconsider this topic again.
The variability of a paper quality is split into 3 components, the variance in machine direction (MD), in cross machine direction (CD) and in a residual component (RES), which is not related to MD or CD. The break down helps to distinguish which methods of profile optimization are required to come to an improvement.
Variance Partition Analysis-Starting Point for Profile Optimization, 2007 TAPPI Papermakers and PIMA
