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Conference papers
Simplified Automatic Nonlinear Grade Change Control for Paper Machines, 19PaperCon

Simplified Automatic Nonlinear Grade Change Control for Paper Machines, 19PaperCon

Conference papers
To Steel or Not to Steel • Steel Dryer Cans, 19PaperCon

To Steel or Not to Steel • Steel Dryer Cans, 19PaperCon

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A new technique for the measurement of show-through mottle of fine paper, TAPPI Journal September 2019

ABSTRACT: Mottling within print-through and show-through is caused by the variability of the local optical properties of the sheet. This mottling is visually disturbing and a mark of poor paper quality. The ability to predict print-through mottle of printed paper by measuring show-through mottle on the unprinted sheet would be a valuable asset for paper machine control.We examined the relationship between print-through mottle and show-through mottle. We worked with nine samples of 60 lb. uncoated fine paper (90 g/m2), from various North American paper companies, that were printed on an offset press, 400K (400% Black), on both sides. A show-through mottle instrumental determination technique was developed using an existing Fast Fourier Transform-based algorithm. The nine samples examined were ranked similarly by the visual evaluation of print-through mottle and by the instrumental determination of show-through mottle. We thus established that show-through on the unprinted sheet can be used as a reliable predictor of print-through, therefore saving time and money for papermakers. We also found a significant two-sidedness in show-through for some of the samples.

Water Reclamation: Where Do We Go From Here?, 2008 Engineering, Pulping and Environmental Conference

Water Reclamation: Where Do We Go From Here?, 2008 Engineering, Pulping and Environmental Conference

WWTP Reduced SulfurEmission Measurements, 2008 Engineering, Pulping and Environmental Conference

WWTP Reduced SulfurEmission Measurements, 2008 Engineering, Pulping and Environmental Conference

Algas Fluid Technology Systems as Your Partner in Water Treatment, 2008 Engineering, Pulping and Environmental Conference

Algas Fluid Technology Systems as Your Partner in Water Treatment, 2008 Engineering, Pulping and Environmental Conference

Petroleum Coke (Petcoke) Firing in Lime Kilns & Recovery Boilers Energy savings with Solid Fuel, 2008 Engineering, Pulping and Environmental Conference

Petroleum Coke (Petcoke) Firing in Lime Kilns & Recovery Boilers Energy savings with Solid Fuel, 2008 Engineering, Pulping and Environmental Conference

Pursuing Sustainability, 2008 Engineering, Pulping and Environmental Conference

Pursuing Sustainability, 2008 Engineering, Pulping and Environmental Conference

Flexographic Image Reproduction Specification and Tolerence: First 4.0 Design Guide, 2009 Corrugated Conference

First 4.0 Design Guide, 2009 Corrugated Conference

Fundamental Studies Applied for Latest Development in Deinking Flotation Technology, 2009 TAPPI Engineering, Pulping, Environmental Conference

Fundamental Studies Applied for Latest Development in Deinking Flotation Technology, 2009 TAPPI Engineering, Pulping, Environmental Conference

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