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Corrusystems

specialist for the corrugated cardboard and printing industry

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You are here: Home / Flexo industry / Doctor blades

Doctor blades

Flexo Concepts TruPoint doctor blades

Corrusystems offers a complete range of Flexo Concepts TruPoint doctor blades, designed for various applications, substrates, and desired print results. Because doctor blades greatly influence ink consumption, print quality, safety, and costs, we are happy to help you choose the right one.

Choosing the right doctor blade and the advantages of polymer over steel

In flexo printing, doctor blades play an important role in transferring ink from the anilox roll to the printing plate. A doctor blade removes excess ink from the smooth, non-engraved parts of the anilox roll. The right doctor blade creates an even ink distribution on the printing plate, and therefore a consistent and optimal printing image.

There are two types of doctor blades, which are both essential in flexo printing:

  • Metering doctor blades: remove excess ink from the smooth, non-engraved parts of the anilox roll.
  • Containing doctor blades: prevent ink from running out of the flexo chamber and prevents pollution of the ink.

Metering doctor blades

Even ink distribution and consistent print quality depend to a large extent on your metering doctor blade. What qualities to look out for here? (The answers explain why Flexo Concept exclusively develops polymer blades.)

  • Durability
    The durability of the material and the continuous stiffness of a doctor blade is crucial. Most blades (steel in particular) lose 70% of their stiffness and start bending within the first hour of use. This so-called creeping results in less effective metering which forces press operators to keep increasing pressure to compensate for the bending. An additional disadvantage is the frequent replacement of the doctor blades.
  • Safety
    Prevention of cutting injuries: steel doctor blades are responsible for a large number of injuries every year. Accidents with hands and wrists are the most expensive injuries in emergency departments, costing companies lots of money annually!
  • Securing anilox lifetime
    Protect your anilox roll from scoring. A score line is a deep scratch destroying the cells around the roll’s surface, mostly caused by using steel doctor blades. Once the roll’s surface is scored, the defects will show in the printed image, resulting in costs for repair or replacement of the anilox roll, press downtime, lost substrate, and ink waste.

Containing doctor blades

Containing doctor blades prevent ink from running out of the flexo chamber. Choosing the right type of containing blade optimizes your flexo process significantly because of:

  • Ink saving. A slightly flexible containing blade is effective enough at containing ink in the chamber, but thin and flexible enough to allow back doctored ink to return to the chamber.
  • Prevention of soiled ink. Steel and non-flexible blades often result in back-doctoring. Because they don’t allow any ink back into the chamber, they account for ink accumulation at the back of the blade.
    In contrast, a thin polymer blade allows ink to return to the chamber. This prevents ink from building up on the back of the blade, then collecting at the end of the chamber and eventually ending up on the press, the sheets, and the floor.

TruPoint doctor blades range

Flexo Concepts TruPoint metering and containing doctor blades are durable, safe, and available for varying anilox line screens. All doctor blades can be cut to size and/or provided with a foam strip on the back.


TruPoint Green

Applications

  • Corrugated
  • Envelope
  • Coating & laminating
  • Cleaning & scraping applications
  • Specialty applications
TruPoint-Green-doctor-blade-for-high-quality-corrugated-printing
Features
Metering blade: mid-high level graphics (300-500 lpi)
Thickness
1.27 mm
1.60 mm
2.00 mm
Profile
Bevel: 30° 45°
Max. Length*
75m


TruPoint Orange

Applications

  • Corrugated
  • Envelope
  • Coating & laminating
  • Specialty applications
TruPoint-Orange-for-high-quality-flexo-printing
Features
Metering blade: line screens up to 2,000 lpi
Thickness
0.70 mm
1.00 mm
1.27 mm
1.60 mm
2.00 mm
Profile
MicroTip: M8 M10 M15 M25
Bevel: 15° 22° 30°
Max. Length*
76 m


TruPoint Durapoint

Applications

  • Corrugated
  • Envelope
  • Coating & laminating
  • New energy technology
  • Specialty applications
TruPoint-DuraPoint-for-high-quality-flexo-printing
Features
Metering blade: line screens up to 2,000 lpi
Thickness
0.80 mm
1.00 mm
1.25 mm
1.60 mm
2.00 mm
2.30 mm
3.20 mm
Profile
Bevel: 30° 45°
Straight
Max. Length*
76 m


TruPoint UHMW

Applications

  • Corrugated
  • Envelope
  • Coating & laminating
  • Specialty applications
TruPoint-UHMW-metering-containment-blade-for-high-quality-flexo-printing
Features
Metering and containing: long runs, coarse anilox
engravings and abrasive coatings or inks
Thickness
0.80 mm
1.00 mm
1.25 mm
1.60 mm
2.00 mm
2.30 mm
3.20 mm
Profile
Bevel: 30° 45°
Straight
Max. Length*
76 m


TruPoint Polyester

Applications

  • Corrugated
  • Envelope
  • Coating & laminating
  • Specialty applications
TruPoint-Polyester-for-high-quality-flexo-printing
Features
Containment blade: highly resistant to chemicals, superior blade life and
reduced anilox scoring in chambered blade systems
Thickness
0.19 mm
0.25 mm
0.37 mm
0.50 mm
Profile
Bevel: 15°
Straight
Max. Length*
76 m

Flexo Concepts TruPoint: innovating to meet high printing demands in corrugated printing

To meet today’s requirements of corrugated cardboard printing that increasingly includes detailed, multicolored designs, Flexo Concepts developed its Green doctor blade. This polymer blade has all the pros of a steel blade without the cons.

Flexo Concepts TruPoint Green allows consistent ink distribution over the entire surface, even on demanding substrates like corrugated board. Resulting in high print quality, preservation of the anilox roller, fewer accidents, and increased productivity. Specific polymers enable customized solutions that cater to a wide range of print designs.

We gladly assist you in selecting the right blade for your printing requirements. And of course, we offer samples of our doctor blades for testing purposes.

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Flexo Concepts doctor blades

  • TruPoint Green
  • TruPoint Orange
  • TruPoint UHMW
  • TruPoint DuraPoint
  • TruPoint Polyester

Advantages of plastic doctor blades

How can I help you today?

Do you have questions about our product range, improving your production process, or new techniques? Or are you considering expanding your equipment? Contact me today, I will be happy to help you!


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