Ibeslab@ Cuflex is notice by offering good precision and resistance. Doctor blade is the element that removes excess ink on gravure rollers and flexo anilox. It is generally made of steel, with different degrees of hardness, microstructure and with different treatments, tempered, stainless or chemical coating. For other applications and printers, they are also manufactured in different plastics such as Polyester, nylon or Polyethylene.
With the different types of steel that we have available and the appropriate geometry of the blade, it is possible to configure the balance of quality and durability that we need for our flexo or rotogravure printing.
The doctor blade can have different shapes: straight, with a bevel or with a lamella, having different shapes and angles. The sharper the blade this ensures greater precision in cutting the ink and reduces the area of contact with the anilox, preventing blade wear.
The thickness of the doctor blade and the design of the lamella is key to avoiding problems of splashes (spitting) in printing, for this reason we provide personalized advice to meet every need.
There are many sizes (from 5 to 100 mm.) and thicknesses (from 0.10 to 0.50 mm.) Available, with the dimensions prescribed by machine manufacturers such as Comexi, Windmoller (W&H), Giave, Schiavi, Bobst (Rotomec, Fischer , F&K), Omet, Nilpeter, Sicosa, Uteco, Gallus, Carint, Gidue, Rotatek, etc.
The best profile for an anchor would be a bevel profile rather than a bevel or straight edge.
For very long runs we supply ceramic coated doctor blades, but there are shorter run jobs where a carbon steel doctor blade works well and the cost is much lower.
Yes, for short runs and varnish jobs they are sometimes used. They wear faster and therefore there can be a loss of definition if we work with colours. Steel doctor blades tend to give better definition and cost-effectiveness with this type of UV inks.
A high quality coated steel doctor blade offers high wear resistance and allows good print quality to be maintained throughout the print run.
A round edge is another option when definition is not required.
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