Article provided by: Acro Labels Inc

Flexographic Label Printing

Flexographic Label Printing

What is flexographic printing? 

Flexography is a printing process that involves transferring ink on the film material via a flexible printing plated. It is done in bulk order labeling and packaging. Presses can print on paperboards, foils, films, papers, and corrugated boards at a speed of 500 to 2000 feet per minute. Flexographic printing plates are flexible and can be customized, which is impossible with other types of presses.

What is the flexographic printing process?

Flexible photopolymer plates are wrapped on a rotating cylinder for each color. Like a letterpress printer, the text and graphics of each color are lifted from the plate's surface. The lifted parts are inked. The flexographic press has a fountain roller, plate cylinder, and anilox roller, and impression cylinder.

The fountain roller's function is to deliver ink from the ink pan to the ceramic or steel anilox roller then to the plate cylinder. Ink is applied to the substrate, and the paper passes between the cylinder and the metal impression cylinder. Pressure is used by the impression cylinder, which transfers the ink from the plate to the substrate.

The anilox roller transfers the uniform thickness of the ink to the flexible printing plate. Every anilox roller has an engraved cell with a specific ink capacity. Doctor blades scrape the roller surface to ensure that only the ink is delivered to the printing plate.

What is flexo label printing?

In flexography, the anilox roller transfers a uniform thickness of ink to the flexible printing plate. Each anilox roller has finely engraved cells that have a specific ink capacity. An optional doctor blade scrapes the anilox roller surface to ensure that the only ink delivered to the printing plate comes from the ink in the engraved cells.

What is the difference between flexo and digital printing?

Flexo printing is done on large-scale objects with a single design, whereas digital printing is used for smaller batches or when printing different designs. Flexo printing is flexible and can be customized to fit any material. If you are looking to match a Pantone color, a flexo printer gives the corrective shade. Digital printing enables you to print a clean and precise image on the pass without using plates. You can make various versions of an image without using another set of plates.

What is the difference between flexo and offset printing?

The plates used for flexo printing are aimed at the rotary printing process, which makes them durable and multi-use. In offset printing, the ink is transferred through various rollers onto the printing plate. The ink used is UV curable or water-based and has four process colors dedicated to a different printing station. Flexo inks can be UV curable, water-based, or solvent-based.UV inks are used often since they have a higher running speed and can be left in the press without needing to empty and clean the print station. 

Offset printing machines can print materials as long as the surface is flat and smooth. Flexography is done on absorbent and nonabsorbent materials and can happen on any substrate with a flexible surface.

Please contact Acro Labels Inc. at 1-800-35-LABEL for the best custom label printing available online

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Flexographic Label Printing
Acro Labels Inc
2156575366
Flexographic Label Printing
2530 Wyandotte Rd
Willow Grove PA 19090

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