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Open Access
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.

Journal articles
Magazine articles
Open Access
Editorial: The changing face of the coated paper industry, TAPPI JOURNAL January 2018

Editorial: The changing face of the coated paper industry, TAPPI JOURNAL January 2018

Journal articles
Open Access
Performance of steels against corrosion in peracid bleach media, TAPPI JOURNAL, July 2005, Vol. 4(7) (116 KB)

Performance of steels against corrosion in peracid bleach media, TAPPI JOURNAL, July 2005, Vol. 4(7) (116 KB)

Journal articles
Open Access
Automatic control of additives with modern online measurement technology raises papermaker productivity, TAPPI JOURNAL, June 2005, Vol. 4(6) (3.81MB)

Automatic control of additives with modern online measurement technology raises papermaker productivity, TAPPI JOURNAL, June 2005, Vol. 4(6) (3.81MB)

Journal articles
Open Access
Effect of thermal treatment on the structure of PCC particles, TAPPI JOURNAL, November 2005, Vol. 4(11) (352 KB)

Effect of thermal treatment on the structure of PCC particles, TAPPI JOURNAL, November 2005, Vol. 4(11) (352 KB)

Journal articles
Open Access
TJ web enhancements, TAPPI JOURNAL, August 2002, Vol. 1(6) (

TJ web enhancements, TAPPI JOURNAL, August 2002, Vol. 1(6) (49KB)

Journal articles
Open Access
The relationship between Kappa Number and Oxidizable Structures in Bleached Kraft Pulps, JOURNAL OF PULP AND PAPER SCIENCE: VOL. 28 NO. 8 AUGUST 2002 [02AUGJP262.pdf]

The relationship between kappa number and oxidizable structures in bleached kraft pulps, Journal of Pulp and Paper Science, August 2002, Vol. 28(8) (107KB)

Journal articles
Open Access
Effects of geometry and thermal boundary conditions on calender roll thermal deformation, TAPPI JOURNAL, December 2002, Vol. 1(10) (436KB)

Effects of geometry and thermal boundary conditions on calender roll thermal deformation, Solutions! & TAPPI JOURNAL, December 2002, Vol. 1(10) (436KB)

Journal articles
Open Access
Raman microscopy in lateral mapping of chemical and physical composition of paper coating, Solutions! & TAPPI JOURNAL, September 2004, Vol. 3(9) (3KB)

Raman microscopy in lateral mapping of chemical and physical composition of paper coating, Solutions! & TAPPI JOURNAL, September 2004, Vol. 3(9) (3KB)

Journal articles
Open Access
The strength of periodic press section marks in paper, TAPPI JOURNAL April 2005, Vol. 4(4)

The strength of periodic press section marks in paper, TAPPI JOURNAL April 2005, Vol. 4(4)

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