The Model of Assessment for Flexographic Printing Technology

2018 ◽  
pp. 67-75
Author(s):  
Krzysztof Ejsmont ◽  
Jan Lipiak
Keyword(s):  
Printing Technology ◽  
Flexographic Printing

scholarly journals Evaluation of Flexographic Printing Technology for Multi-busbar Solar Cells

2015 ◽  
Vol 67 ◽  
pp. 126-137 ◽  
Author(s):  
A. Lorenz ◽  
A. Senne ◽  
J. Rohde ◽  
S. Kroh ◽  
M. Wittenberg ◽  
...  
Keyword(s):  
Solar Cells ◽  
Printing Technology ◽  
Flexographic Printing

Basics of flexography

2021 ◽  
Author(s):  
Rostislav Moginov ◽  
Ekaterina Nadirova ◽  
Yaroslav Dmitriev
Keyword(s):  
Higher Education ◽  
Bachelor's Degree ◽  
Practical Work ◽  
Federal State ◽  
Educational Standards ◽  
Printing Technology ◽  
Flexographic Printing ◽  
State Educational ◽  
Printing Processes

The textbook deals with the theoretical and practical issues of flexographic printing technology. Much attention is paid to prepress and printing processes. Data on the adhesion of flexographic inks are presented, and theoretical and practical issues affecting the quality of printing are presented. Meets the requirements of the federal state educational standards of higher education of the latest generation. It is intended for teaching students of higher education institutions in the discipline " Flexographic printing technology "in the direction of bachelor's degree 29.03.03 and master's degree 29.04.03" Technology of printing and packaging production", can be used in practical work by specialists of printing enterprises and publishing organizations.

Drug-printing by flexographic printing technology—A new manufacturing process for orodispersible films

2013 ◽  
Vol 441 (1-2) ◽  
pp. 818-825 ◽  
Author(s):  
Eva Maria Janßen ◽  
Ralf Schliephacke ◽  
Armin Breitenbach ◽  
Jörg Breitkreutz
Keyword(s):  
Manufacturing Process ◽  
Printing Technology ◽  
Orodispersible Films ◽  
Flexographic Printing

Cellulose nanofibers and chitosan to remove flexographic inks from wastewaters

2019 ◽  
Vol 5 (9) ◽  
pp. 1558-1567 ◽  
Author(s):  
Ana Balea ◽  
M. Concepcion Monte ◽  
Elena Fuente ◽  
Jose Luis Sanchez-Salvador ◽  
Angeles Blanco ◽  
...  
Keyword(s):  
Cellulose Nanofibers ◽  
Printing Technology ◽  
Flexographic Printing

Flexographic printing technology is an economical, productive, low maintenance and versatile technology.

scholarly journals Assessment of the Condition of Anilox Rollers

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1301
Author(s):  
Arnas Savickas ◽  
Rimantas Stonkus ◽  
Eugenijus Jurkonis ◽  
Igor Iljin
Keyword(s):  
Cell Volume ◽  
Cell Size ◽  
Baltic States ◽  
High Quality ◽  
Printing Plate ◽  
Printing Technology ◽  
Flexographic Printing ◽  
The Baltic

To produce high-quality prints using flexographic printing technology, it is important, among other factors, how accurately and consistently the ink is delivered to the printing plate, and, from there, onto the printed material. This function is performed by anilox rollers. The aim of this research is to investigate the condition of anilox rollers in printing houses in the Baltic states. The study evaluated the wear and cell clogging of anilox rollers. The dependency of clogging on the cell size, as well as the dependency of wear on the cell size (i.e., change in cell volume) and quantity of doctor blades, was investigated. In addition, the uniformity of cell clogging and wear on the surface of the anilox roller was evaluated. Studies have shown that more than half of the anilox rollers in printing houses are not washed properly; higher line screen anilox rollers tend to become more clogged, and it is important to take measurements at more than three locations to assess the reliability of more worn rollers.

4D printing technology, modern era: A short review

2020 ◽  
pp. 92-111
Author(s):  
Khodadad Mostakim ◽  
Nahid Imtiaz Masuk ◽  
Md. Rakib Hasan ◽  
Md. Shafikul Islam
Keyword(s):  
Smart Materials ◽  
Computer Aided Design ◽  
Short Review ◽  
Stimuli Responsive ◽  
4D Printing ◽  
Space Applications ◽  
Printing Technology ◽  
Practical Applications ◽  
Biomedical Technologies ◽  
Novel Material

The advancement in 3D printing has led to the rapid growth of 4D printing technology. Adding time, as the fourth dimension, this technology ushered the potential of a massive evolution in fields of biomedical technologies, space applications, deployable structures, manufacturing industries, and so forth. This technology performs ingenious design, using smart materials to create advanced forms of the 3-D printed specimen. Improvements in Computer-aided design, additive manufacturing process, and material science engineering have ultimately favored the growth of 4-D printing innovation and revealed an effective method to gather complex 3-D structures. Contrast to all these developments, novel material is still a challenging sector. However, this short review illustrates the basic of 4D printing, summarizes the stimuli responsive materials properties, which have prominent role in the field of 4D technology. In addition, the practical applications are depicted and the potential prospect of this technology is put forward.

Development and production experience of the multilayer curtain-coated linerboard of Ji’an PM No. 3,

TAPPI Journal ◽  
2014 ◽  
Vol 13 (2) ◽  
pp. 17-25
Author(s):  
JUNMING SHU ◽  
ARTHAS YANG ◽  
PEKKA SALMINEN ◽  
HENRI VAITTINEN
Keyword(s):  
Titanium Dioxide ◽  
High Speed ◽  
Food Packaging ◽  
Production Efficiency ◽  
Positive Impact ◽  
Low Cost ◽  
Board Structure ◽  
Flexographic Printing ◽  
Curtain Coating ◽  
Coating Formulations

The Ji’an PM No. 3 is the first linerboard machine in China to use multilayer curtain coating technology. Since successful startup at the end of 2011, further development has been carried out to optimize running conditions, coating formulations, and the base paper to provide a product with satisfactory quality and lower cost to manufacture. The key challenges include designing the base board structure for the desired mechanical strength, designing the surface properties for subsequent coating operations, optimizing the high-speed running of the curtain coater to enhance production efficiency, minimizing the amount of titanium dioxide in the coating color, and balancing the coated board properties to make them suitable for both offset and flexographic printing. The pilot and mill scale results show that curtain coating has a major positive impact on brightness, while smoothness is improved mainly by the blade coating and calendering conditions. Optimization of base board properties and the blade + curtain + blade concept has resulted in the successful use of 100% recycled fiber to produce base board. The optical, mechanical, and printability properties of the final coated board meet market requirements for both offset and flexographic printing. Machine runnability is excellent at the current speed of 1000 m/min, and titanium dioxide has been eliminated in the coating formulations without affecting the coating coverage. A significant improvement in the total cost of coated white liner production has been achieved, compared to the conventional concept of using virgin fiber in the top ply. Future development will focus on combining low cost with further quality improvements to make linerboard suitable for a wider range of end-use applications, including frozen-food packaging and folding boxboard.

Effect of ink and paperboard characteristics on flexographic print quality based on print density

TAPPI Journal ◽  
2011 ◽  
Vol 10 (9) ◽  
pp. 7-13
Author(s):  
KHODADAD MALMIRCHEGINI ◽  
FARSHAD SARKHOSH RAHMANI
Keyword(s):  
Water Absorption ◽  
Significant Influence ◽  
Particle Diameter ◽  
Print Quality ◽  
Printing Technology ◽  
Plastic Films ◽  
Printing Inks ◽  
Packaging Industry ◽  
Solids Content ◽  
Density Results

Flexography is an evolving printing technology that is suitable for printing on coated and uncoated paperboard and board, nonporous substrates including metalized and paperboard foils, and plastic films used especially in the packaging industry. This study evaluated the effect of paperboard and ink characteristics on flexographic print density in paperboard. Three commercial paperboards from different companies were prepared: brown kraft from Thailand, white kraft from Spain, and test liner from Iran. Four samples of process print inks from Iran were used in this investigation. Paperboard properties, such as roughness and water absorption, and ink characteristics, including solids content, PH and particle diameter, were measured. The inks were printed on paperboards using a roll no.15 applicator with a blade metering device, and the print densities were measured. Results showed that solids content, pH, and particle diameter of printing inks influenced print density, while the roughness and water absorption of the three types of paperboard had no significant influence on print density. Results also illustrated that two levels of ink viscosity (25–30 and 50–55 mPa·s) were insignificant to print density.

Flexographic ink-coating interactions: effects of latex variations in coating layers

TAPPI Journal ◽  
2016 ◽  
Vol 15 (4) ◽  
pp. 253-262 ◽  
Author(s):  
ERIK BOHLIN ◽  
CAISA JOHANNSON ◽  
MAGNUS LESTELIUS
Keyword(s):  
Contact Angles ◽  
High Ratio ◽  
Print Quality ◽  
Particle Sizes ◽  
Mixed Composition ◽  
Coating Surface ◽  
Covered Area ◽  
Surface Optical ◽  
Flexographic Printing ◽  
Coating Formulation

The effect of coating structure variations on flexographic print quality was studied using pilot-coated paperboard samples with different latex content and latex particle sizes. Two latexes, with particle sizes of 120 nm and 160 nm, were added at either 12 parts per hundred (pph) or 18 pph to the coating formulation. The samples were printed with full tone areas at print forces of 25 N and 50 N in a laboratory flexographic printing press using a waterbased ink. A high ratio of uncovered areas (UCAs) could be detected for the samples that contained 18 pph latex printed at a print force of 25 N. UCAs decreased with increased print force and with decreased amounts of latex in the coating formulation. The fraction of latex covered area on the coating surface was estimated to be 0.35–0.40 for the 12 pph, and 0.70–0.75 for the 18 pph samples. The ink penetration depth into the coating layer could be linked to the fraction of latex-free areas on the coating surface. Optical cross section microscopy indicated that a higher printing force did not increase the depth of penetrated ink to any greater extent. Higher printing force did increase contact between plate and substrate, leading to an improved distribution of the ink. This, in turn, increased print density and decreased UCAs. On closer inspection, the UCAs could be categorized as being induced by steep topographic changes. When appearing at other locations, they were more likely to be caused by poor wetting of the surface. To understand the wetting behavior of the coating surface, observed contact angles were compared with calculated contact angles on surfaces of mixed composition.

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