When it comes time to choose doctor blades for your printing press, you’ve got some decisions to make. Are you going to use metal or go with a different material, such as a composite blade. Whatever you decide to use, choosing the right blade for your print application is an important step.
Composites can be a smart selection as they provide long life at high speeds as compared to some other materials. Look at the type of products you print, and that will help you make the decision. If you need fine screen metering with a ceramic anilox roll, then a composite, such as Allison Systems’ Fiberglass Plus, is a good choice that is effective with most water-based inks including those that are abrasive or have high solids content.
Take a moment to think about what types of printing you do most often. Composites are ideal for line work and some process jobs on paper and board substrates. Composite blades which are blended with graphite are ideal for higher-end graphics on corrugated materials.
Allison Systems will offer blade selection guidance that will help you make the most effective decision on a replacement. A blade analysis, which covers blade alignment and contact angle, may also help you decide if the current type of blade you are using is appropriate for your application or if you should switch to another type.
When it comes time for doctor blade replacement, you may be wondering if another type would work better on your press, or if you should simply keep ordering the same type you’ve been using all along. There are many options on the market ranging from plastic blades to composite to metal. Our team at Allison Systems has assembled a few points for consideration to help you make sure you get the blades you require for your printing application.
Consider your roller material, the length of the press runs you typically require, and the abrasiveness of the inks you use and that will give you a solid starting point for consideration of which blade material you should purchase. You will want to look at blade edge shapes as well to obtain good wiping characteristics and reduce ink leakage.
You also need to think about the product and the substrate being used. High-end graphics or line work? Paper, film, or corrugated substrate? All these points need to be considered when choosing a blade.
Allison Systems will offer blade selection guidance by working with you to choose the right blade for your application as well as diagnosing any issues you are having with your current blade. Learning about your current blade performance can help you to make decisions about any future changes. A blade analysis is often part of this process and gives insight into the alignment and contact angle of your blade thereby allowing you to make setup improvements if needed. Allison Systems will also provide sample blades for testing with your application to verify the chosen blade is effective for you before you commit to an order.