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Journal articles
Open Access
Relationship of Surface Strength and Bulk Strength Properties in Uncoated Woodfree Paper, TAPPI JOURNAL February 2011

Relationship of Surface Strength and Bulk Strength Properties in Uncoated Woodfree Paper, TAPPI JOURNAL February 2011

Journal articles
Magazine articles
Open Access
Citrus-based hydrocolloids: A water retention aid and rheology modifier for paper coatings, TAPPI Journal July 2019

ABSTRACT: The rheological and dewatering behavior of an aqueous pigmented coating system not only affects the machine runnability but also affects the product quality. The current study describes the use of natural hydrocol-loids derived from citrus peel fibers as a rheology modifier in paper coating applications. The results were compared with carboxymethyl cellulose (CMC) in a typical paper coating system. Water retention of the coating formulation was increased by 56% with citrus peel fibers compared to a default coating, and it also was higher than a CMC-containing coating. The Brookfield viscosity of paper coatings was found to increase with citrus peel fibers. Compared to CMC, different citrus peel fibers containing coating recipes were able to achieve similar or higher water retention values, with no change or a slight increase in viscosity. Coatings were applied on linerboard using the Mayer rod-coating method, and all basic properties of paper were measured to assess the impact of citrus peel fiber on the functional value of the coatings. Paper properties were improved with coated paper containing citrus peel fibers, including brightness, porosity, smoothness, surface bonding strength, and ink absorption.

Journal articles
Magazine articles
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
Open Access
Three-Dimensional Observation of Coated Paper by Confocal Laser Scanning Microscope, TAPPI JOURNAL, February 2006, Vol. 5(2) (393 KB)

Three-Dimensional Observation of Coated Paper by Confocal Laser Scanning Microscope, TAPPI JOURNAL, February 2006, Vol. 5(2) (393 KB)

Journal articles
Open Access
A Low-Temperature, Black Liquor Gasifier Model for Use in WinGEMS, TAPPI JOURNAL, February 2006, Vol. 5(2) (242 KB)

A Low-Temperature, Black Liquor Gasifier Model for Use in WinGEMS, TAPPI JOURNAL, February 2006, Vol. 5(2) (242 KB)

Journal articles
Open Access
Soot blower lance tube corrosion in recovery boilers, TAPPI JOURNAL, January 2006, Vol. 5(1) (436 KB)

Soot blower lance tube corrosion in recovery boilers, TAPPI JOURNAL, January 2006, Vol. 5(1) (436 KB)

Journal articles
Open Access
Purification of Peroxide-Bleached TMP Waterby Dissolved Air

Purification of Peroxide-Bleached TMP Waterby Dissolved Air Flotation, TAPPI JOURNAL, May 2006, Vol. 5(5) (395 KB)

Journal articles
Open Access
The applicability of natural colorants in papermaking, TAPPI

The applicability of natural colorants in papermaking, TAPPI JOURNAL, July 2006, Vol. 5(7)

Journal articles
Open Access
Characterizing the Pore Structures of Paper Coatings with Scanning Probe Microscopy, TAPPI JOURNAL, March 2006, Vol. 5(3) (470KB)

Characterizing the Pore Structures of Paper Coatings with Scanning Probe Microscopy, TAPPI JOURNAL, March 2006, Vol. 5(3) (470KB)

Journal articles
Open Access
Characterizing Liquid-Vapor Phase Change Phenomena in Impuls

Characterizing Liquid-Vapor Phase Change Phenomena in Impulse Technology With Resistivity Probes, TAPPI JOURNAL, May 2006, Vol. 5(5) (280 KB)

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