Flexo Doctor Blades
The purpose of doctor blades for flexo printing
Scraping action of flexo doctor blades to meter ink was adopted from the rotogravure print process. In fact, flexo made its biggest print quality gains by moving to higher line anilox and all but eliminating the surface ink film. Today’s HD flexo relies on a precise volume of ink from cells, not surface ink films.
The excess ink requires more dry time and energy consumption. In addition, the thicker ink film more rapidly overwhelms the plate’s raised image resulting in dot gain, dirty print and mid run press stops to clean the plate.
Materials we use to make doctor blades for flexo printing
We use only well known and checked steel providers for supplying steels for our manufacturing processes. Getting high quality and reliable delivery raw steels enable us to manufacture your blades precisely for each application and deliver them always on time.
We manufacture doctor blades from
- carbon steels
- micro-alloyed tool steels
- stainless
To improve blade lifespan, hardness and maximise corrosion resistance, we offer premium quality blades with chromium and tungsten alloys.
Please read about our Doctor Blades Types.
Please contact Nick
to discuss your Doctor Blades
Office: +44 (0) 114 244 0527 Ext: 129
Email: nick.wright@fernite.co.uk
Mobile: 07480 254837
WhatsApp: 07480 254837
Mon – Thu: 8.30am-5.00pm
Fri: 8.30am – 3.45pm
Sat-Sun: Closed
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What tip is the most popular for flexo doctor blade?
A doctor blade with a radius edged tip, as it is well accepted, is mostly used in flexographic print. Safety operation, longer run time and price efficiency are the main factors that determined this preference.
The next choice is the beveled edge, and the less common is lamella edged blade.
We supply all our Gravure Doctor Blades in all standard edge profiles:
- Lamella edge
- Bevel edge
- Round edge
At what angle is flexo doctor blade to the anilox?
In the flexo process, the challenge is to set a blade to the anilox at roughly 30 degrees to 35 degrees and keep it there. Most doctor blade metering systems are preset to position the blade at the optimum contact angle.
What size should be flexo doctor blade?
The contact area of the blade stays a significant factor in controlling the amount of ink. To lower hydraulic impact, it has been accepted that the width of the contact should be as narrow as possible. The higher hydraulic presser, during run processes, lifts the blade and allows more ink to pass through. Therefore, to reduce negative impacts, a thicker blade is often preferred.
Making the correct choice isn’t always obvious, as sometimes a thicker blade provides a thinner contact area. If you are not confident what size doctor blade you require for your printing, please contact us and our technical experts would discuss your requirements.
If you require an urgent quote please contact us on +44 (0) 114 244 0527.