Assessment of the Condition of Anilox Rollers

Savickas, Arnas; Stonkus, Rimantas; Jurkonis, Eugenijus; Iljin, Igor

doi:10.3390/coatings11111301

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…They carried out a numerical simulation and estimated the influences of the anilox cell shape, ink viscosity and printing plate contact angles on the ink transfer ratio [37]. Savickas et al did an evaluation study of the anilox roller cell wear in their paper [38].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Anilox Roller Lines on the Ink Impression on Different Polymer Substrates in Flexo Printing

2024

Teh. vjesn.

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Flexo printing or flexography is the most common letterpress printing technique today. Compared to other printing techniques, the advantages of flexographic printing are higher printing speed, low material losses, the possibility of using water-based colors, high color consistency on the print itself. The appearance of the final product largely depends on the selection of the anilox roller, i.e. its line and volume, and on the substrate. The research carried out in this paper determined the influence of the anilox roller when printing on different polymer substrates, and colorimetric differences in color deviation were determined in prints that included four different manufacturers of solvent-based paints on five different polymer substrates (transparent BOPP, white LDPE, black and white recycled LDPE, blue LDPE and green LDPE) with anilox rollers of different lines (lpi) and volume (BCM). In the paper there were used three different anilox rollers with 100 lpi, 165 lpi and 220 lpi.

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Section: Introductionmentioning

confidence: 99%

The Influence of Anilox Roller Lines on the Ink Impression on Different Polymer Substrates in Flexo Printing

2024

Teh. vjesn.

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“…To cater to evolving market requisites, anilox-roll manufacturers have been progressively enhancing anilox cell densities alongside their depths and volumes. However, despite advanced solutions optimizing the functionality of these cylinders [5,6], they remain susceptible to wear [7][8][9] and operational damage [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Efficiency and Anilox-Roll Condition after Ultrasonic Cleaning

Przybysz,

Lipkiewicz,

Małachowska

et al. 2023

Coatings

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In the flexographic printing industry, anilox rolls play a pivotal role in determining ink usage. These rolls are characterized by anilox cells, which transfer ink to the final printed material. However, these rolls face wear and potential damage during their operational life, largely due to improper cleaning or debris accumulation in the ink duct. Such contamination compromises the ink capacity, impacting print quality. With the industry’s need for consistent and high-quality prints, there is a growing emphasis on the development and consistent implementation of optimal anilox-roll operation methodologies. One cleaning method gaining traction is ultrasonic cleaning. This method employs ultrasonic waves in conjunction with a cleaning agent, providing a quick, efficient, and environmentally conscious cleaning alternative. Yet, there is limited scientific data on the actual condition of anilox rolls after ultrasonic cleaning. In this study, the surface of anilox rolls post-ultrasonic-cleaning was comprehensively examined using microscopic analysis. This assessment provided insights into the method’s efficacy and potential for causing roll damage. The results showed that post-printing, rolls lost approximately 20% of their ink capacity, and ultrasonic cleaning effectively restored the ink capacity of the undamaged rolls. However, for rolls with pre-existing damage, the ultrasonic cleaning process exacerbated the damages, leading to complete delamination in some instances. This study underscores the potential of ultrasonic cleaning in restoring anilox-roll efficiency but also highlights the need for caution with damaged rolls.

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“…Typical anilox coating rollers have a volume of 8 BCM or more. Depending on anilox line screen, as well as the smoothness of its surface, there are differences in the wear and life span of the doctor blade [8].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Underlying Opaque White Coating Parameters on Flexographic Print Quality

Tomerlin¹,

Valdec

Tomiša

et al. 2023

Applied Sciences

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Opaque white ink is highly important when printing on transparent substrates. The purpose of the white ink is to completely or partially cover the content of the packaging as well as to ensure the printing of other colors over it according to the appropriate printing specifications. The main goal of this study was to research the impact of anilox roller volume of opaque white on its opacity, and, consequently, on opacity, as well as the CIELAB values of colors that are printed over it. The research was conducted in three printing stages, during which the volume of the anilox roller was increased in linear steps of 3 cm3/m2 while other parameters remained constant. The analysis of white ink covering properties was carried out on microscopic print images using ImageJ software. The results showed that a linear increase in the anilox roller volume resulted in an exponential change in white ink opacity as well as the opacity of color samples. It was also determined that a volume increase of 6 cm3/m2 was required to visually notice color difference. Namely, medium lightness colors more strongly reacted to changes in white ink opacity compared to light and dark colors.

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Assessment of the Condition of Anilox Rollers

Cited by 6 publications

References 14 publications

The Influence of Anilox Roller Lines on the Ink Impression on Different Polymer Substrates in Flexo Printing

The Influence of Anilox Roller Lines on the Ink Impression on Different Polymer Substrates in Flexo Printing

Assessment of Efficiency and Anilox-Roll Condition after Ultrasonic Cleaning

The Impact of Underlying Opaque White Coating Parameters on Flexographic Print Quality

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