Chambered Doctor Blade | CDB
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In printing, the doctor blade (from ductor blade, also called scraper or wiper) removes the excess ink from the smooth non-engraved portions of the anilox roller and the land areas of the cell walls. Doctor blades are also used in other printing and coating processes for the same function. It is believed that the name derives from the blades used in flatbed letterpress equipment for blades used to wipe ductor rolls, and “ductor” became doctor.
In the coating processes for graphic art industry, the doctor blade is attached to the bottom roller to wipe the excess varnish and avoid varnish dirt the back of prints.
Chamber doctor blade is a sealed doctor blade system with a chamber.
Features of chamber doctor blade:
Better working environment
Stable coating quality, improve consistency of coating
Operational efficiency
Easy to clean and maintain
Save varnish, reduce VOC emissions, more environment-friendly
The system includes the chamber itself, coating supplier system and pnumetic system.
Generally in coating and varnishing machines, chamber doctor blade will work together with a ceramic anilox roller.
Shape and size is customized according to different coating anilox roller and job requirement.