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The evolution of reel statistical methods, TAPPI Journal June 2019
ABSTRACT: Multiple statistical methods for calculating the variance partition analysis (VPA) of reel data have existed for decades. In the paper industry, VPA is also commonly known as reel statistics. VPA commonly consists of total variance (TOT) that is then divided into three components: cross direction (CD), machine direction (MD), and residual (RES). A common mathematical procedure is referred to as ANOVA (analysis of variance). TAPPI Standard Test Method T 545 “Cross-machine grammage profile measurement (gravimetric method)” addresses paper testing and includes the ANOVA equations that have also been used to analyze scanning data.In the 1990s, TAPPI published TIP 1101-01 “Calculation and partitioning of variance using paper machine scanning sensor measurements,” which contained simple formulas that were easy to implement and could be used by a nov-ice to generate statistics on a spreadsheet. All involved quality control system (QCS) suppliers agreed to support this common method in their QCS. TIP 1101 was recently revised, and this paper concerns the analysis of data collected from a scanning sensor in a QCS and the creation of a common method for the calculation of reel statistics by TAPPI’s Process Control Division.
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UPM CEO Jussi Pesonen Named European CEO of the Year, Paper360º March/April 2019
UPM CEO Jussi Pesonen Named European CEO of the Year, Paper360º March/April 2019
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Navigator Cacia Optimizes Causticizing Process Targets, Paper360º March/April 2019
Navigator Cacia Optimizes Causticizing Process Targets, Paper360º March/April 2019
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Stora Enso Imatra Mills: Going With the Flow, Paper360º March/April 2019
Stora Enso Imatra Mills: Going With the Flow, Paper360º March/April 2019
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Etex Bègles Paper Mill Raises Paperboard Performance, Paper360º March/April 2019
Etex Bègles Paper Mill Raises Paperboard Performance, Paper360º March/April 2019
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TAPPI Journal Summaries, Paper360º March/April 2019
TAPPI Journal Summaries, Paper360º March/April 2019
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Is Your Preventive Maintenance Program Right for Your Plant?, Paper360º March/April 2019
Is Your Preventive Maintenance Program Right for Your Plant?, Paper360º March/April 2019
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Reinvention Brings Rewards for Cascades Sonoco, Paper360 May/June 2019
Reinvention Brings Rewards for Cascades Sonoco, Paper360 May/June 2019
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2019 TAPPI/PIMA Awards: Saluting Our Industry Leaders, Paper360 May/June 2019
2019 TAPPI/PIMA Awards: Saluting Our Industry Leaders, Paper360 May/June 2019
Journal articles
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Facing the Market, Paper360 May/June 2019
Facing the Market, Paper360 May/June 2019