What is an anilox roll considered to be?
An anilox roll is a hard cylinder, usually constructed of a steel or aluminum core which is coated by an industrial ceramic whose surface is engraved with millions of very fine dimples, known as anilox cells.
How do you calculate the volume of an anilox?
- 1 LPC = 2.54 LPI. Cell volume is the ink carrying capacity of a cell multiplied by the number of cells in. a given square inch/meter of roll surface. The common unit of measurement in North America is BCM/in2 or billion cubic microns.
- 1 INCH = 25400 microns.
- 1 BCM/sq in = 1.55 cm3/m2.
What is anilox LCM?
Line count is the number of cells per linear inch, at the angle of engraving, typically 30°, 45° or 60° in reference to the axis of the anilox roll. Once engraved, anilox cell count does not change.
What is anilox volume?
Anilox volume refers to the carrying capacity of an anilox cell, or the amount of ink held in each cell, during Flexographic Printing. It is one of the many factors that determines the amount of ink that is transferred to the print material, and therefore has to be accurately controlled and measured.
What is anilox system?
A flexographic inking system is sometimes known as an anilox system. The purpose of the anilox roller is to pick up ink from the fountain roller (or, in some configurations, directly from the ink fountain) and deliver a predetermined, metered, uniform amount of ink to the rubber printing plate.
How do you make anilox rollers?
Production process of anilox rollers consists of the following operations:
- Manufacturing of an anilox roll body.
- Quality control of the anilox roll body.
- Plasma coating of 25µm thick nickel sub-layer using plasma technology.
- Plasma Cr2O3 ceramic coating with a thickness of 200-250µm using plasma technology.
How do I choose anilox?
Keeping the Anilox cell opening equal to or less than the minimum dot diameter will ensure you can achieve the desired quality of clean printing. This will ensure your anilox will deliver the right amount of ink to your plate and not over ink your minimum dots, avoiding what is sometimes referred as “dirty printing.”
What is anilox coating?
Anilox Coating with TRESU The roller is a core element of the printing press, and has direct impact on print results. Anilox coater is used for hybrid coating attachment on offset machine.
What are anilox rollers made of?
The base of the anilox is a steel roll, which then has a ceramic, titanium and water mix sprayed over it. This is then fused to the base using a flame. Once the ceramic is built up, it needs to be smoothed down.
Why is the anilox roller so important?
The Anilox Roller is often referred to as the heart of the flexographic press. It is designed to deliver a precise and consistent amount of ink to the printing plate. The choice of the correct anilox roller is of central importance for an optimal printing result.
What is plate cylinder?
: the cylinder of a rotary printing press to which the printing plates are attached.
How big of an anilox volume do you need?
For example, an anilox volume of 3.2 BCMs, requires a line screen of approximately 500. If an anilox volume of 3.2 BCM was engraved at 1000 line screen, cells would be much too deep. In correlation, a 3.2 BCM anilox at 120 line screen anilox would result in cells being much too shallow.
What should the anilox line count be for coatings?
Lower anilox line counts accommodate higher volumes for solid coverage and coatings. A volume of 8.0 BCM is engraved within a range of 165 to 300 cells per inch. Higher line counts are better suited to lower cell volumes.
How is anilox roll selection based on volume?
Anilox roll selection should be based on cell volume or capacity of the engraved cells. Print results are accomplished with this volume, which transfers to the printing plate and then to the substrate. In general transfer efficiency is approximately 25% to the substrate.
Why do you need a 60 degree angle on an anilox?
A 60 degree angle ensures maximum density in a given space. Lower volume makes for less ink. Low line numbers will allow for a heavy layer of ink to be printed, whereas high line numbers will permit finer detail in printing.