Study on Performance of Yellow Water-Based Ink for Flexographic Printing

2015 ◽  
pp. 891-902
Author(s):  
Yang Liu ◽  
Peiqing Huang ◽  
Xianfu Wei ◽  
Weidong Liu
Keyword(s):  
Water Based ◽  
Flexographic Printing

Printability Analysis of Compostable Films by Flexographic Water Based Ink

2020 ◽  
Vol 843 ◽  
pp. 26-32
Author(s):  
Aran Hansuebsai ◽  
Samatcha Nawakitwong
Keyword(s):  
Surface Roughness ◽  
Quality Parameters ◽  
Image Resolution ◽  
Printing Press ◽  
Print Quality ◽  
Tone Reproduction ◽  
Water Based ◽  
Flexographic Printing ◽  
Set Up ◽  
Printing Speed

This research analyzed the printability of compostable films commercialized in the Thai market such as PLA/PBAT and PBAT/starch; and to comply with EN 13432 standard by using flexographic water based ink. A narrow web flexographic printing press was set up and opperated. Print quality parameters such as optical density, tone reproduction, print contrast and print uniformity were investigated. Results showed that these compostable films were hydrophobic in nature, in combination with fracture and voids of substrates’ surface. Even the substrates could be printed relatively well but showed poor ink adhesion. Surface treatment, therefore, was necessary, but having limitation. Anilox line screen 700 lpi and printing speed at 30 m/min were preferable to achieve the optimum tone reproduction and print contrast. This was based on the image resolution of 133 lpi and corona dosage at 500 watt-min/m2. Images of printed samples from SEM and SPM indicated that the fracture surface and void of films could lead to decrease their printability. It was found that starch blend gave better results as being a filler of the surface roughness of the substrate..

Branched polyglycerols as performance additives for water-based flexographic printing inks

2015 ◽  
Vol 78 ◽  
pp. 334-339 ◽  
Author(s):  
Zuzanna Żołek-Tryznowska ◽  
Joanna Izdebska ◽  
Mariusz Tryznowski
Keyword(s):  
Water Based ◽  
Printing Inks ◽  
Flexographic Printing ◽  
Performance Additives

Research of Wax Additives in the Water-Based Ink for Flexographic Printing

2018 ◽  
pp. 737-744
Author(s):  
Yun Ouyang ◽  
Weiguang Feng ◽  
Zhiyong Sun ◽  
Xiaoli Liu ◽  
Shuangyang Li ◽  
...  
Keyword(s):  
Water Based ◽  
Flexographic Printing

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.

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.

EXPERIMENTAL STUDIES OF WATER-BASED TITANIUM OXIDE NANOFLUID IN A CIRCULAR PIPE UNDER TRANSITION FLOW WITH CONICAL STRIP INSERTS

2018 ◽  
Vol 49 (5) ◽  
pp. 439-456 ◽  
Author(s):  
M. Arulprakasajothi ◽  
K. Elangovan ◽  
U. Chandrasekhar ◽  
S. Suresh
Keyword(s):  
Titanium Oxide ◽  
Experimental Studies ◽  
Circular Pipe ◽  
Transition Flow ◽  
Water Based

SYNTHESIS AND CHARACTERIZATION OF WATER BASED ZNO AND AG COATED ZNO NANO-FLUIDS FOR HEAT TRANSFER APPLICATIONS

2018 ◽  
Author(s):  
Surendra D. Barewar ◽  
Sandesh S. Chougule ◽  
J. Jadhav ◽  
S. Biswas
Keyword(s):  
Heat Transfer ◽  
Synthesis And Characterization ◽  
Water Based ◽  
Nano Fluids
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