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Journal articles
Superheated steam drying of paper: effect of sulfonation level, TAPPI JOURNAL, July 1995, Vol. 78(7)
Superheated steam drying of paper: effect of sulfonation level, TAPPI JOURNAL, July 1995, Vol. 78(7)
Journal articles
Reducing chlorinated organic compounds from bleached kraft mills through first stage substitution of chlorine dioxide for chlorine, TAPPI JOURNAL, June 1995, Vol. 78(6)
Reducing chlorinated organic compounds from bleached kraft mills through first stage substitution of chlorine dioxide for chlorine, TAPPI JOURNAL, June 1995, Vol. 78(6)
Journal articles
Separation of fiber and ash in deinking effluents: a case study, TAPPI JOURNAL, May 1995, Vol. 78(5)
Separation of fiber and ash in deinking effluents: a case study, TAPPI JOURNAL, May 1995, Vol. 78(5)
Journal articles
A financial analysis of north american pulp, paper and packaging firms, TAPPI JOURNAL, September 1999, Vol. 82(9)
A financial analysis of north american pulp, paper and packaging firms, TAPPI JOURNAL, September 1999, Vol. 82(9)
Journal articles
Magazine articles
Viscoelastic web curl due to storage in wound rolls, TAPPI Journal July 2020
ABSTRACT: Winding is often the final operation in a roll-to-roll manufacturing process. Web materials, i.e., materials that are thin compared to their length, are wound into rolls because this form is the only practical means to store them. The resulting bending strains and associated stresses are large for thick webs and laminates. As many webs are viscoelastic on some time scale, bending stresses lead to creep and inhomogeneous changes in length. When the web material is unwound and cut into discrete samples, a residual curvature remains. This curvature, called curl, is the inability for the web to lie flat at no tension. Curl is an undesirable web defect that causes loss of productivity in a subsequent web process. This paper describes the development and implementation of modeling and experimental tools to explore and mitigate curl in homogenous webs. Two theoretical and numerical methods that allow the prediction of curl in a web are developed: a winding software based on bending recovery theory, and the implementation of dynamic simula-tions of winding. One experimental method is developed that directly measures the curl online by taking advantage of the anticlastic bending resulting from the curl. These methods are demonstrated for a low-density polyethylene web.
Journal articles
Magazine articles
Case study: Paper mill power plant optimization—balancing steam venting with mill demand, TAPPI Journal June 2020
ABSTRACT: Most Power departments are tasked with generating steam to support mill wide operations, generate electricity, and reduce operating costs. To accomplish these tasks, power boilers generate high pressure steam that is reduced to intermediate and low pressures for process utilization in the mill by means of steam turbine generator extraction or pressure reducing valves. The most economical method to reduce steam pressure is the use of steam turbine generators, as electricity is generated from the steam when it is reduced in pressure. Electricity that is produced by these generators provides a substantial financial benefit and helps offset overall operational costs. To achieve tangible financial gains, the mill must evaluate the overall cost of steam production and the price of electricity.The current work provides a case study of power plant optimization that evaluated electricity production and steam production costs balanced with mill steam demand. Process and cost optimization led to a significant reduc-tion in low pressure steam venting, resulting in reduced fuel consumption and reduced operating cost.
Journal articles
Xylanase treatment for the bleaching of softwood kraft pulps: the effect of chlorine dioxide substitution, TAPPI JOURNAL, August 1993, Vol. 76(8)
Xylanase treatment for the bleaching of softwood kraft pulps: the effect of chlorine dioxide substitution, TAPPI JOURNAL, August 1993, Vol. 76(8)
Journal articles
Polyelectrolyte interactions with papermaking fibers: the mechanism of surface-charge decay, TAPPI JOURNAL, December 1993, Vol. 76(12)
Polyelectrolyte interactions with papermaking fibers: the mechanism of surface-charge decay, TAPPI JOURNAL, December 1993, Vol. 76(12)
Journal articles
ISO 9000 requirements for pulp and paper testing equipment maintenance, TAPPI JOURNAL, February 1993, Vol. 76(2)
ISO 9000 requirements for pulp and paper testing equipment maintenance, TAPPI JOURNAL, February 1993, Vol. 76(2)
Journal articles
Use of uv-visible diffuse reflectance spectroscopy for chromophore research on wood fibers: a review, TAPPI JOURNAL, February 1993, Vol. 76(2)
Use of uv-visible diffuse reflectance spectroscopy for chromophore research on wood fibers: a review, TAPPI JOURNAL, February 1993, Vol. 76(2)