Coated Board For Packaging
Superior Quality
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The brush calender system also treats areas of the coated surface that are uneven, preventing any differences in gloss. The brush finishing process, introduces no variation in thickness of the sheet, gives a uniform smoothness and gloss surface, which are essential for better printing and varnishing. With the application of a DOX Brush Finishing Unit, a gloss improvement of 30 - 50% is possible in addition to the calendering gloss benefit. Brush Finishing Operation DOX Brush Finishing Systems run with web speeds up to 500 m/min and are normally equipped with 2 - 8 brush rolls on each side of the coated paper or board. |
The brush rolls, specially designed and manufactured for high-gloss brush finishing, have diameters of 500 - 580 mm and operate at a speed of 800 to 1200 rpm. Operating at these levels requires electro-dynamic balancing of the rolls to guarantee vibration-free operation. The gloss achieved with area brushing, as opposed to line-contact calendering, is the result of high temperature and friction created between the coated surface of the sheet and the counter-rotating brushes. Each system incorporates dust removal units to clean dust and contaminants from the polished surface. Their removal protects the very important runability and printability parameters for the printers. Page |
