Direct-write surface wettability modification for fluidic manufacturing processes

2021 ◽  
Author(s):  
James Macdonald ◽  
Maria Cristina Rodriguez Rivero ◽  
Ainara Rodriguez ◽  
Ronan Daly
Keyword(s):  
Surface Wettability ◽  
Manufacturing Processes ◽  
Direct Write

Impact of fiber structure on edge-wicking of highly-sized paperboard

TAPPI Journal ◽  
2018 ◽  
Vol 17 (08) ◽  
pp. 437-443
Author(s):  
Lebo Xu ◽  
Jeremy Meyers ◽  
Peter Hart
Keyword(s):  
Fiber Surface ◽  
Manufacturing Processes ◽  
Paper Machine ◽  
Liquid Penetration ◽  
Fiber Structure ◽  
Cut Edge ◽  
Local Fiber

Coffee edge-wicking testing was conducted on two groups of highly-sized paperboard manufactured at two mills with similar manufacturing processes, but with vastly different local fiber sources. Although the Hercules size test (HST) indicated similar internal size levels between the two types of board, the edge-wicking behavior was noticeably different. Analysis of fiber structure revealed that the board with more edge-wicking had fibers with thicker fiber walls, which kept the fiber lumen more open after pressing and drying on a paper machine. It was demonstrated that liquid penetration through voids between fibers in highly-sized paperboard was limited, because the fiber surface was well protected by the presence of sufficient sizing agent. Nevertheless, freshly exposed fiber walls and lumens at the cut edge of the sheet were not protected by sizing material, which facilitated edge-wicking. The correlation between fiber structure and edge-wicking behavior was highlighted in this work to inspire development of novel sizing strategies that protect the freshly cut edge of the sheet from edge-wicking.

CONTROL OF POOL BOILING HYDRODYNAMICS THROUGH SURFACE WETTABILITY PATTERNING

2018 ◽  
Author(s):  
Taylor P. Allred ◽  
Justin A. Weibel ◽  
Suresh V. Garimella
Keyword(s):  
Pool Boiling ◽  
Surface Wettability
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