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Integrating Modular Simulation with Spreadsheets in On-line
Integrating Modular Simulation with Spreadsheets in On-line Applications, 1995 Pulping Conference Proceedings
Reactivity of Lignin Condensed Units and its Implication in Alkaline Delignification, 1996 Pulping Conference Proceedings
Reactivity of Lignin Condensed Units and its Implication in Alkaline Delignification, 1996 Pulping Conference Proceedings
Modifying Existing Bleach Plants for ECF Sequences with Low Chlorine Dioxide, 1996 Pulping Conference Proceedings
Modifying Existing Bleach Plants for ECF Sequences with Low Chlorine Dioxide, 1996 Pulping Conference Proceedings
Effect of Enzyme Pretreatments on Conventional Kraft Pulping, 1997 Pulping Conference Proceedings
Effect of Enzyme Pretreatments on Conventional Kraft Pulping, 1997 Pulping Conference Proceedings
Flotation Deinking of Toner-Printed Papers Using Frother Spray, 1998 Pulping Conference Proceedings
Flotation Deinking of Toner-Printed Papers Using Frother Spray, 1998 Pulping Conference Proceedings
Lessons Learned from the Process of Developing and Evaluating the New Generation Pressure Sensitive Adhesives, 2000 Recycling Symposium Proceedings
Lessons Learned from the Process of Developing and Evaluating the New Generation Pressure Sensitive Adhesives, 2000 Recycling Symposium Proceedings
Mechanism of Retention of Metal Cations in Linerboard and Never Dried Pulps
Mechanism of Retention of Metal Cations in Linerboard and Never Dried Pulps
Bleachability of Recycled Fibers Deinked with Enzyme Preparations
Bleachability of Recycled Fibers Deinked with Enzyme Preparations
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2026 TAPPI Aqueous Barrier Coating Course
This course provides a solid foundation in the development and application of aqueous-based barrier coatings for paper and paperboard packaging. Through a practical, hands-on approach, participants will gain a clear understandingof the chemistry, application techniques, and performance attributes of these environmentally friendly coatings
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.