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Journal articles
Open Access
Using multi-method analysis to identify challenging paper machine deposits and defects, TAPPI Journal March 2025

ABSTRACT: Based on its speed and versatility, Fourier transform infrared (FTIR) spectroscopy is the industry’s common starting point for analysis of a paper machine deposit or defect sample. However, certain contaminants and papermaking process additives cannot be precisely identified solely by infrared spectral interpretation. This lack of specificity could lead to a misinterpretation of the composition of the deposit or defect. A multi-method analysis uses data from two or more analytical techniques, including FTIR spectroscopy, microbiological staining/phase contrast microscopy, pyrolysis-gas chromatography/mass spectrometry (Pyro-GC/MS), and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX), to produce a more specific assessment of a sample’s composition. This paper discusses the use of a multi-method analysis in deposit and defect analysis and presents several case studies that demonstrate how this comprehensive approach can often produce an interpretation result of greater conviction and value to the papermaker.

Journal articles
Open Access
Application of AI-based approach to control the papermaking process, TAPPI Journal March 2025

ABSTRACT: This paper explores AI’s role in revolutionizing the pulp and paper industry, and specifically in predicting wet tensile strength (WTS) for specialty-grade papers. Leveraging eLIXA technology, a 90-day study achieved a 15% reduction in chemical dosage and an 80% decrease in wet tensile standard deviation. The real-time dosage prediction led to optimizing the wet strength resin (WSR) consumption and improved process reliability. The self-learning models exhibited adaptability to changing variables, ensuring their robustness. Overall, this study highlights AI’s transformative impact on efficiency, cost savings, and product quality within the dynamic landscape of papermaking. The approach used for wet strength optimization has been used to optimize other aspects of pulp and paper production.

Journal articles
Open Access
Adhesion properties of polyamide fibers used in press, TAPPI JOURNAL, April 2000, Vol. 83(4)

Adhesion properties of polyamide fibers used in press, TAPPI JOURNAL, April 2000, Vol. 83(4)

Journal articles
Open Access
Comparative annual cost efficiency between thermal and chemical oxidation of TRS in kraft mills, TAPPI JOURNAL, July 2005, Vol. 4(7) (200 KB)

Comparative annual cost efficiency between thermal and chemical oxidation of TRS in kraft mills, TAPPI JOURNAL, July 2005, Vol. 4(7) (200 KB)

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
Flow regime effects on the spreading rate of a nylon fiber suspension jet in a rectangular channel, TAPPI JOURNAL, June 2005, Vol. 4(6) (380KB)

Flow regime effects on the spreading rate of a nylon fiber suspension jet in a rectangular channel, TAPPI JOURNAL, June 2005, Vol. 4(6) (380KB)

Journal articles
Open Access
PET polyester resins used in the wet end at neutral-alkaline papermaking conditions, TAPPI JOURNAL, June 2005, Vol. 4(6) (268KB)

PET polyester resins used in the wet end at neutral-alkaline papermaking conditions, TAPPI JOURNAL, June 2005, Vol. 4(6) (268KB)

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)

Magazine articles
Open Access
Global multi-pigment savvy from imerys, TAPPI JOURNAL, June 2000, Vol. 83(6)

Global multi-pigment savvy from imerys, TAPPI JOURNAL, June 2000, Vol. 83(6)

Magazine articles
Open Access
Vendor, supplier, or partner, TAPPI JOURNAL, June 2000, Vol. 83(6)

Vendor, supplier, or partner, TAPPI JOURNAL, June 2000, Vol. 83(6)

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