10 things to avoid in flexography to prevent from troubles

Have you ever experienced any troubles when printing in flexo? Here is a list of things you should avoid when approaching flexography in order to prevent from troubles in production. Don't miss the next videos: click here to subscribe to flexo•expert channel on YouTube! Interested in customized training in flexography? [...]

Register tolerance: what is the correct value?

The register between colors is a fundamental aspect for the quality of the printed product. But what is the correct register tolerance and how to evaluate it? ISO 12647-6 connects the register tolerance to the print linescreen. The higher the linescreen, the greater the expected accuracy on the printed product. According to this norm, register [...]

2020-03-31T10:30:03+00:00Tags: , |4 Comments

Next flexo training courses in Atif

Here are the next training courses in flexography at Atif in Milano Monday, September 30th Introduction to flexography: Flexo? Pleasure to know it! Bookings until: 20/09/2019 Monday, October 7th Il lungo viaggio dell’inchiostro flessografico Bookings until: 27/09/2019 Monday, October 14th La prestampa per la flessografia Bookings until: 04/10/2019. Monday, October 21st Alla ricerca della qualità [...]

2019-07-26T23:37:40+00:00Tags: |1 Comment

Slur: the sneaky enemy of print quality

Slur is characterised by the smearing of the printed image: the dots are distorted in printing direction, typically elongated, and exhibit an oval shape. This condition is caused by slippage at the point of contact and impression between the plate and the substrate and/or even the plate and the anilox roll. The printed image [...]

2018-07-30T00:04:26+00:00Tags: |0 Comments

Dot bridging

Dots in midtones screened areas, that normally should appear separated on printing, bridge together causing a dirty aspect on printed product. Main addressable cause is anilox volume too high for the selected plate linescreen, or, viceversa, plate linescreen too high for the available anilox volume. The ink, collected by the printing surface of the [...]

2018-07-28T10:27:29+00:00Tags: , , |2 Comments

Plate cracking with water based inks

Plate is damaged with little cracks when using water based inks. Such fissures are evident both on plate surface and on printed product. This particular issue happened in a plant printing corrugated post-print with water based inks. The water based inks are characterised by the presence of amines in the formulation and have a [...]

2018-07-28T10:27:04+00:00Tags: , , , |0 Comments

Dot dipping (in anilox)

Dot dipping describes the condition whereby the smallest dots on a flexo plate dip into the cells of the anilox roll when forced by the impression between anilox and plate. Some dots of the plate, dipping in the cells, will carry more ink than what was expected, resulting in dirty printing in highlights, typically [...]

Hollow dots, like donuts, perforate ink layers

Ink builds around small print elements like dots and small type creating hollow shapes like donuts. Inked dots perforate ink layers that were printed by previous printing groups. This happened on external print on plastic film, solvent based inks, flat-top plate, sequence YMCK. Combined action of excessive impression with high ink volume and [...]