Search
Use the search bar or filters below to find any TAPPI product or publication.
Filters
Content Type
Publications
Level of Knowledge
Collections
Journal articles
Magazine articles
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
Editorial: Kathleen Bennett: Opportunities for paper are pro
Editorial: Kathleen Bennett: Opportunities for paper are proliferating, TAPPI JOURNAL May 2016
Journal articles
Magazine articles
Guest Editorial: From rocket science to innovation in bioenergy & bioproducts, TAPPI JOURNAL February 2017
Guest Editorial: From rocket science to innovation in bioenergy & bioproducts, TAPPI JOURNAL February 2017
Journal articles
Magazine articles
Low-temperature precausticizing — a hopeful approach for green liquor desilication, TAPPI JOURNAL February 2017
Low-temperature precausticizing — a hopeful approach for green liquor desilication, TAPPI JOURNAL February 2017
Journal articles
Magazine articles
Understanding conductivity and soda loss
Understanding conductivity and soda loss
Journal articles
Magazine articles
Estimating limits of wet pressing on paper machines, TAPPI JOURNAL February 2017
Estimating limits of wet pressing on paper machines, TAPPI JOURNAL February 2017
Journal articles
Magazine articles
Removal of silicon from green liquor with low-temperature precausticizing, TAPPI JOURNAL January 2017
Removal of silicon from green liquor with low-temperature precausticizing, TAPPI JOURNAL January 2017
Journal articles
Magazine articles
Cellulosic ethanol byproducts as a bulking agent, TAPPI JOURNAL January 2017
Cellulosic ethanol byproducts as a bulking agent, TAPPI JOURNAL January 2017
Journal articles
Magazine articles
Editorial: The Laboratory of Soft Materials & Green Chemistr
Editorial: The Laboratory of Soft Materials & Green Chemistry at North Carolina State University, TAPPI JOURNAL July 2017
Journal articles
Magazine articles
Reduction of alkali loss in an ash leaching system, TAPPI J
Reduction of alkali loss in an ash leaching system, TAPPI JOURNAL July 2017