Life Sciences Commons^™

Paper Substrates For Electronic Printing, Laura K. Wood

Masters Theses

Printed Radio Frequency Identification (RFID) labels utilize conductive inks to provide the means for wireless flow of electronic signals. An RFID label is an identification label with an integrated circuit and antenna that transmits data via radio waves to a reader, which sends the data to a computer for processing. RFID labels allow manufacturers and retailers to accurately track their inventory more efficiently than previously possible with bar codes. However, etched metal RFID labels are too expensive for widespread implementation. The key to reducing the cost of RFID technology is replacing etched metal tags with tags printed with conducting ink. …

Use Of Borate In Semi-Chemical Pulping, Promodh K. Veguru

Masters Theses

The original Neutral Sulfite Semi-Chemical (NSSC) pulping process used sodium sulfite as the principle cooking chemical and had the disadvantage of sulfur emission problems. Considerable research was conducted to investigate the use of other chemicals including sodium hydroxide, but was not completely satisfactory. Several mills adapted a sodium carbonate based process but experienced slower pulping and reduced physical properties. The objective of this research is to study the use of borate as a pulping chemical in sodium carbonate semi-chemical pulping. The experimental plan included digester cooks; controls with pure sodium carbonate, and the other with partially borate autocausticized sodium carbonate. …

Computer Integrated Print Production And Jdf, Deepak-Kumar Mohan-Kumar

Masters Theses

In the graphic arts industry, the need for the unification of mechanized and automated systems has seen a great increase in the last few years. This very need has led to various specification formats like, Adobe's PJTF and CIP3's PPF and the latest one of them all, CIP4's JDF. Earlier specification formats that had inherent limitations with proprietary architecture have paved the way to JDF. JDF is an open, extensible, XML based job ticket format that has been a proposed standard to achieve end-to-end job ticket specifications along with message interchange protocol and message description standard.

This thesis research has …

3d Simulation Of Layer Mixing In A Three-Layer Stratified Headbox, Jatetana Kunsriluksakul

Masters Theses

In this research, the commercially available software called FLUENT is used to simulate and visualize behaviors of flow in a three-layer stratified headbox of a paper machine. A two-phase model, "volume of fluid", is employed to simulate turbulences in a free jet. The information obtained from the simulations, in terms of velocity profiles, Reynolds stress, turbulent kinetic energy, and macro scale of turbulence, are used to assess and characterize the effect of free jet length, vane length, vane thickness, nozzle angle, and slice opening on fiber layer mixing. Importantly, the simulation results demonstrated that the macro scale of turbulence in …

The Effects Of Various Types And Percentages Of Fillers With The Mechanical Properties Of Latex Saturated Paper, Jeffrey Alan Kuehn

Masters Theses

This study examined how the percentage of mineral fillers and their various types, when added to the base paper, affects the mechanical characteristics of latex impregnated paper.

A series of model handsheets were produced and subjected to physical property tests. The basis weight of these handsheets was held constant, as various types and percentages of filler were added. This base paper was then impregnated with a known acrylic emulsion. All variables with the impregnation process were held constant during the impregnation process. Physical properties were tested on the handsheets before and after impregnation. All physical tests on the handsheet samples …