Printing Essay

1759 Words May 3rd, 2013 8 Pages
Flexographic Prints

Flexography is generally known as ‘anline’ printing, it is a method which allows ink printing on several surfaces quickly and efficiently. This printing is seen in ranges of applications, for instance food packing industry and colored plastic bags. It is leading other types of printing like screen printing, because flexography allows faster and larger volume printed goods. At large scale production, flexography allows higher level of automation and minimal operator influence during printing which help producing at economical costs. Figure 1 is graphical representation of flexographic printing. Basically, it transfer liquid ink on the raised surface of photopolymer printing plate which contains the image which is
…show more content…
The final printed product may look like single layer but it consists of many layers, which has used different printing stations. One flexography machine consist of up to 10 printing stations, but generally a machine has 4 to 6 stations. There is a specified force which an anilox uses for transferring ink on the plate. The force is controlled manually because it affect the overall printing quality of the product. Greater force can ruin the plate, resulting in loss of detail and defecting ‘halos’. Whereas, if the amount of force is less, the insufficient ink will be transferred for image creation, the volume of anilox required is dictated by ink properties, the ink film thickness requirement and geometry of image to be printed.
When anilox is transferring the ink on the printing plate, it is then transfer to substrate (on which material is getting printed) which is pulled through as the anilox and printing cylinders are turning.
Just like anilox force, printing force is very essential in the printing process for avoiding imperfect printing. Barrelling is the name used for the printing forces effects.
Printing plate

Figure 2 - Example of Barrelling of a Printing Plate
Barrelling is a name for

Related Documents