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Magazine articles
Open Access
Editorial: Gerry Ring: The potential in paper processing, TAPPI JOURNAL October 2015

Editorial: Gerry Ring: The potential in paper processing, TAPPI JOURNAL October 2015

Journal articles
Magazine articles
Sheet structure Process effect on tissue Properties, Tissue3

Sheet structure Process effect on tissue Properties, Tissue360º Spring/Summer 2015

Journal articles
Magazine articles
Rapid Growth Puts GapCon on Global Tissue Stage, Tissue360º

Rapid Growth Puts GapCon on Global Tissue Stage, Tissue360º Spring/Summer 2015

Journal articles
Magazine articles
Open Access
Guest Editorial: TAPPI Journal names two Best Research Paper Award winners for 2020, TAPPI Journal April 2021

For the first time since the annual award was introduced back in 2006, TAPPI Journal's editoria board elected two scientific papers to receive the TAPPI Journal Best Research Paper Award for 2020.

Journal articles
Magazine articles
Open Access
Mechanical modification of softwood pulp fibers using a novel lightweight vertical bar plate, TAPPI Journal April 2021

ABSTRACT: Refiner plates made using sand casting have a draft angle, which results in a trapezoidal bar shape. These trapezoidal bar plates have a limited throughput compared to the vertical bar plates, and eventually the edges of the bars become dull, resulting in longer time to reach the target freeness and shorter service life. The new light-weight refiner plate with a bar insertion method into a plate base was developed by selecting an aluminium-based alloy as the plate base material and a stainless steel alloy with high wear resistance as the bar material. The light-weight plate with sharp bar edges was very effective in reducing refining energy by reaching the target freeness faster than the sand-cast bar plate. Finally, the lightweight sharp bar plate, which weighed only about half the weight of the cast bar plate, was expected to significantly contribute to easy replacement, improved paper quality, and larger throughput without excessive loss of fiber length.

Journal articles
Magazine articles
SetPoint: Rising from the Ashes, Tissue360º Fall/Winter 2016

SetPoint: Rising from the Ashes, Tissue360º Fall/Winter 2016

Journal articles
Magazine articles
PrimeService for Modern Tissue Machines: Extending Life Cycl

PrimeService for Modern Tissue Machines: Extending Life Cycle Key to Lower Costs, Tissue360º Fall/Winter 2016

Journal articles
Magazine articles
Vacuum Blower Saves 40-50 Percent Tissue Dewatering Costs, T

Vacuum Blower Saves 40-50 Percent Tissue Dewatering Costs, Tissue360º Fall/Winter 2016

Journal articles
Magazine articles
Open Access
A case study review of wood ash land application programs in North America, TAPPI Journal February 2021

ABSTRACT: Several regulatory agencies and universities have published guidelines addressing the use of wood ash as liming material for agricultural land and as a soil amendment and fertilizer. This paper summarizes the experiences collected from several forest products facility-sponsored agricultural application programs across North America. These case studies are characterized in terms of the quality of the wood ash involved in the agricultural application, approval requirements, recommended management practices, agricultural benefits of wood ash, and challenges confronted by ash generators and farmers during storage, handling, and land application of wood ash.Reported benefits associated with land-applying wood ash include increasing the pH of acidic soils, improving soil quality, and increasing crop yields. Farmers apply wood ash on their land because in addition to its liming value, it has been shown to effectively fertilize the soil while maintaining soil pH at a level that is optimal for plant growth. Given the content of calcium, potassium, and magnesium that wood ash supplies to the soil, wood ash also improves soil tilth. Wood ash has also proven to be a cost-effective alternative to agricultural lime, especially in rural areas where access to commercial agricultural lime is limited. Some of the challenges identified in the review of case studies include lengthy application approvals in some jurisdictions; weather-related issues associated with delivery, storage, and application of wood ash; maintaining consistent ash quality; inaccurate assessment of required ash testing; potential increased equipment maintenance; and misconceptions on the part of some farmers and government agencies regarding the effect and efficacy of wood ash on soil quality and crop productivity.

Journal articles
Magazine articles
Open Access
Continuous tannin extraction by use of screw reactor, TAPPI Journal February 2021

ABSTRACT: A pilot-size screw reactor (extraction unit) was used for tannin extraction of spruce. Yield of the same magnitude or better was obtained when comparing a screw reactor with batch reactors. A longer presoaking time in water seemed to be better than a short one for obtaining higher yield. A higher yield is obtained with lower dry-water ratio, which suggests that the internal diffusion in bark does not determine mass transfer as much as is the case without presoaking of bark. The higher dry-water ratio decreased the yield. The prior soaking of the bark also minimized the mechanical reactor feeding problems (clogging). The benefits of a screw reactor likely are that run time changes for different process conditions are flexible; it simplifies design and construction of an industrial unit for tannin production; and it saves space because of the need for fewer and smaller intermediate storage tanks.

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