Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Graphic Communications
Single Curved Fiber Sedimentation Under Gravity, Xiaoying Rong, Dewei Qi, Jun Yong Zhu, Tim Scott
Single Curved Fiber Sedimentation Under Gravity, Xiaoying Rong, Dewei Qi, Jun Yong Zhu, Tim Scott
Graphic Communication
Dynamics of single curved fiber sedimentation under the gravity are simulated by using lattice Boltzmann method. The results of migration and rotation of the curved fiber at different Reynolds numbers are reported. The results show that the rotation and migration processes are sensitive to the curvature of the fiber.
Study Of Co-Solvent Effects On Stickies Removal In Supercritical Fluid Extraction, Xiaoying Rong, Dewei Qi, John Chateuneuf, Said Abubakr
Study Of Co-Solvent Effects On Stickies Removal In Supercritical Fluid Extraction, Xiaoying Rong, Dewei Qi, John Chateuneuf, Said Abubakr
Graphic Communication
Using supercritical carbon dioxide to remove stickies in recycling fibers is studied at laboratory scale. Supercritical carbon dioxide is the most environmental friendly supercritical fluid widely used in extraction process. This study includes co-solvent effect on sticky compounds removal by using supercritical carbon dioxide extraction. The sticky compounds are dispensed onto fibers, and then extracted using supercritical carbon dioxide and co-solvent in order to study the efficiency of stickies removal. The results show that supercritical carbon dioxide can remove most sticky compounds such as paraffin wax, polyethylene wax, polyvinyl acetate, polystyrene butadiene. It is demonstrated that with co-solvent, the extraction …
Identifying High-Volume Printing Processes, Malcolm G. Keif, Tom Goglio
Identifying High-Volume Printing Processes, Malcolm G. Keif, Tom Goglio
Graphic Communication
Printing professionals frequently examine printing to see how pieces were produced. They break out loupes and look at the dots. Is it offset or gravure? How about flexo? It is important to be able to distinguish among printing processes through examination in order to determine the key variables to control for quality printing. Further, expertise is established and confidence built when a professional can determine how something is printed.