PAPER AND INK INTERACTIONS: Prediction of surface structure of coated paper and of ink setting time by infrared spectroscopy

2013 ◽  
Vol 28 (2) ◽  
pp. 274-281 ◽  
Author(s):  
Juraj Gigac ◽  
Miroslava Kasajová ◽  
Marta Maholányiová ◽  
Monika Stankovská ◽  
Michal Letko
Keyword(s):  
Infrared Spectroscopy ◽  
Surface Structure ◽  
Setting Time ◽  
Coated Paper ◽  
Ink Setting

Numerical Characterization of the Effect of Coating Solid on Binder Distribution

2014 ◽  
Vol 496-500 ◽  
pp. 388-391
Author(s):  
Ying Li ◽  
Wen Juan Gu ◽  
Bang Gui He
Keyword(s):  
Laser Scanning ◽  
Critical Surface ◽  
Coated Paper ◽  
Directional Distribution ◽  
Base Paper ◽  
Numerical Characterization ◽  
Liquid Absorption ◽  
Ink Setting ◽  
Coating Color

Binder is the essential component of coating color recipe. The amount and type of latex binder has a significant effect on both the structure and chemical-physical properties of coated paper, which affect critical surface properties, e.g., print gloss, roughness, ink setting rate via liquid absorption, and print mottle The main aim of this study was to investigate the effect of coating solid on the binder distribution in the method of numerical analysis by Laser Scanning Confocal Microscope (LSCM). In this study, Rhodamine B was used to stain the binder and as the probe to characterize z-directional distribution of the binder using LSCM. The results implied that it was reliable and effective method using LSCM to characterize the z-directional distribution of binder and analyze the influence of coating solid on binder distribution in the z-direction. It could be concluded that the coating solid played an important effect on binder distribution in coated paper and low coating solid with more water accelerated binder migration to the interior of base paper, sample with 60% coating solid is good to binder distribution and coating layer forming.

Study on the Effect of Calender on Coating surface structure and Printability of Coated Paper

2014 ◽  
Vol 904 ◽  
pp. 46-49 ◽  
Author(s):  
Jian Guo Li ◽  
Ying Li
Keyword(s):  
Surface Structure ◽  
Visual Analysis ◽  
Coating Layer ◽  
Mercury Porosimetry ◽  
Lower Amount ◽  
Print Quality ◽  
Coated Paper ◽  
Paper Surface ◽  
Coating Surface ◽  
Printing Quality

The structure of the coating layer has a strong influence on the optical and physical properties of paper as well as on the print quality. Ink is transferred and sets onto the paper surface in the printing process, which affect printing quality and usage of ink. The objective of this experiment was to investigate the influence of calender on coating surface structure and Printability. The surface structure was explored in the method of numerical and visual analysis using mercury porosimetry measurement and scanning electron microscopy (SEM). The findings indicated that the calender treatment affected the pore size, depth and distribution of the coated paper surface. It could be concluded that Calender could increase the smoothness, gloss and paper surface efficiency of coated paper, which resulted in lower amount of ink usage, lower amount of ink absorption and higher print density.

scholarly journals Impact of Water Solubility on Chemical Composition and Surface Structure of Two Generations of Bioceramic Root Canal Sealers

2022 ◽  
Vol 12 (2) ◽  
pp. 873
Author(s):  
Sawsan T. Abu Abu Zeid ◽  
Ruaa A. Alamoudi ◽  
Abeer A. Mokeem Mokeem Saleh
Keyword(s):  
Surface Structure ◽  
Root Canal ◽  
Water Solubility ◽  
Setting Time ◽  
Chemical Properties ◽  
Solubility Test ◽  
Setting Times ◽  
Before And After ◽  
Two Generations ◽  
Root Canal Sealers

Aimed to evaluate the effect of water solubility on chemical properties and surface structure of bioceramic-based (BC-HiFlow and BC-EndoSeqence) compared with resin-based (Adseal) root canal sealers. Fresh mix was inserted into polyethylene mold (n = 10) and subjected to Vicat needle to evaluate the setting time. The set discs were analyzed by Fourier transform infrared (FTIR) spectroscopy then immersed in deionized water for 1, 7, 14 and 28 days. The solubility%, pH changes, released calcium (Ca2+), phosphate (PO43−) and silicon (Si4+) ions were evaluated after each immersion period. The discs were analyzed by scanning electron microscopy/Energy dispersed X-ray (SEM/EDX) before and after solubility test. Although FTIR detected similar composition of both bioceramic-sealers, BC-EndoSequence determined the prolonged setting times. At the end of solubility test, both bioceramic-sealers exhibited significant greater solubility (>3%), alkaline pH (>11) at p < 0.001. Adseal displayed the significant greatest Ca2+ and PO43− released, while BC-HiFlow displayed the significant greatest Si4+ release (p < 0.001). SEM revealed voids and pores on the surface of all tested sealers with the greatest value on Adseal surface. In conclusion, although both bioceramic-sealers had high solubility, BC-Hiflow complied the ISO standard regarding setting time and least surface micropores better than that of BC-EndoSequence.

scholarly journals Effect of Surface Structure on Gloss of Coated Paper

2007 ◽  
Vol 61 (8) ◽  
pp. 967-977
Author(s):  
Hideyuki Mikado ◽  
Keiro Takigawa ◽  
Yukiko Suzuki ◽  
Tetsuya Hirabayashi
Keyword(s):  
Surface Structure ◽  
Coated Paper ◽  
Effect Of Surface

Relationship between Binder Content and Ink Absorption of Coated Paper

2013 ◽  
Vol 650 ◽  
pp. 206-210
Author(s):  
Ying Li ◽  
Wen Juan Gu ◽  
Bei Hai He
Keyword(s):  
Surface Structure ◽  
Laser Scanning ◽  
Coating Layer ◽  
Binder Content ◽  
The Other ◽  
Coated Paper ◽  
Laser Scanning Confocal Microscope ◽  
Printing Quality ◽  
Penetration Behavior ◽  
The Relationship

The ink penetration behavior depends on the coating surface structure and surface properties of the coating layer in the papermaking process, which include coating recipes and coating conditions, etc. The objective of this experiment was to investigate the relationship between binder content and ink absorption using laser scanning confocal microscope (LSCM). Fluorescent ink was used to observe and characterize ink penetration and distribution in coated paper by LSCM. The results indicated that higher binder content could result in higher amount ink absorption. With the increasing of binder content, ink penetration depth in coated paper increased. Sample G2 with 20 parts binder produced the most unevenness ink distribution. It could be concluded that the coated paper with 25 parts binder compared with the other samples resulted in higher ink usage and better printing quality.

Sign in / Sign up

Export Citation Format

Share Document