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Journal articles
Effects of shoe pressing on fine paper properties, TAPPI JOURNAL, November 1999, Vol. 82(11)
Effects of shoe pressing on fine paper properties, TAPPI JOURNAL, November 1999, Vol. 82(11)
Journal articles
Ultrafiltrative Deinking of Flexographic ONP: The Role of Surfactants, TAPPI JOURNAL, November 1999, Vol. 82(11)
Ultrafiltrative Deinking of Flexographic ONP: The Role of Surfactants, TAPPI JOURNAL, November 1999, Vol. 82(11)
Journal articles
Shop talk: five questions to help diagnose printability problems - part 1, TAPPI JOURNAL, November 1999, Vol. 82(11)
Shop talk: five questions to help diagnose printability problems - part 1, TAPPI JOURNAL, November 1999, Vol. 82(11)
Journal articles
Understanding coating strength at the molecular and microscopic level, TAPPI JOURNAL June 2015
Understanding coating strength at the molecular and microscopic level, TAPPI JOURNAL June 2015
Journal articles
Characterization of refined papermaking pulps using hydrodynamic parameters from filtration analysis, TAPPI JOURNAL May 2015
Characterization of refined papermaking pulps using hydrodynamic parameters from filtration analysis, TAPPI JOURNAL May 2015
Journal articles
Examination of the potential to reduce water application rates in pine wet decks, TAPPI JOURNAL October 2015
Examination of the potential to reduce water application rates in pine wet decks, TAPPI JOURNAL October 2015
Journal articles
Hydrodynamic Pressure Generated by Doctoring in Blade Gap Fo
Hydrodynamic Pressure Generated by Doctoring in Blade Gap Formers, 1999 Engineering Conference Proceedings
Journal articles
Magazine articles
Three-dimensional visualization and characterization of paper machine felts and their relationship to their properties and dewatering performance, TAPPI Journal July 2021
ABSTRACT: Polymeric felts are commonly used in the papermaking process on the paper machine wet end, in the press section, and in the dryer section. They provide an important function during paper manufacturing, including as a carrier or support; as a filter media assisting with water removal on the paper machine; in retention of fibers, fines, and fillers; and in some applications, such as tissue and towel, to impart key structural features to the web. These felts can have highly interwoven complex internal structures comprised of machine direction and cross-machine direction yarns of varying sizes and chemical compositions. Here, we present a non-intrusive three-dimensional (3D) image visualization method using advanced X-ray computed tomography (XRCT). This method was used to characterize the complex 3D felt structure and determine the water removal characteristics of some commonly used paper machine felts. The structural features analyzed include porosity; specific pore-yarn interfacial surface area; 3D pore size distribution; 3D fiber or yarn-size distribution; and their variations through the thickness direction. The top, middle, and bottom layers of the felt have very different structures to assist with water removal and impart paper properties. The size distribution of the yarns, as well as the pores in the different layers of the felt, are also inherently different. These structural features were non-intrusively quantified. In addition, variation in the structural characteristics through the thickness of the felts and its potential role in papermaking is explored. In addition to the 3D structural characteristics, permeability characteristics and water removal characteristics, including rewetting of select felt samples, have also been experimentally determined. It is interesting to observe the relationship between key structural features and permeability and water removal characteristics. These relationships can provide additional insights into press felt design, as well as ways to improve product properties and the dewatering efficiency and productivity of the paper machine.
Journal articles
AOX Content of Paper Manufactured with 'Chlorine Free' Pulps
AOX Content of Paper Manufactured with 'Chlorine Free' Pulps, 1995 Papermakers Conference Proceedings
Journal articles
Improving Softwood Mechanical Pulp Properties with Ophiostom
Improving Softwood Mechanical Pulp Properties with Ophiostoma Piliferum, 1995 Pulping Conference Proceedings