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The progress achieved in manufacturing and improvement of paper and board during the last few years has involved further developments for a better surface, especially the printability.
For many years DOX Brush Finishing Systems have been successfully supplied to the paper industry to achieve a higher surface quality of Coated Papers. The finishing process can be performed single or double sided on-line with the board machine, in combination with a calender or as separate systems.
DOX Brush Finishing Description
We build systems for the improvement of printing characteristics of Coated Board and papers as well as art board. These materials are not only used for packing purposes, but especially also for publicity print. Surface quality is therefore especially important for the printing process.
The finishing process is based on a combination of flexible pressure of the filling material of the brush rollers to the web and a relatively high speed between brush rollers and board web.
The use of the DOX Brush Finishing System has the special advantage, that smoothness and gloss values will be increased without specific loss in volume, i. e. stiffness.
The DOX Brush Finishing, in the today's process controlled construction, is a new dimension in improving certain surface properties on Coated Board.
The brush finishing process is an economical technique in improving certain surface properties and is mostly used on-line with board machines downstream of calenders and gloss calenders.
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Benefits for the Paper Industry
- Increased gloss and smoothness without reducing bulk and stiffness
- 30 - 50% increase in gloss, i.e. 40 - 45% gloss 48° Hunter
- Increased print gloss
- Long lifetime of a brush (max. 5000 - 7000 h)
- Installation in combination with calenders to achieve higher bulk with high gloss of Coated Papers
- Installation on-line with board machines
- Combination with soft calenders to increase gloss and smoothness with low pressure
- Systems with unwind and rewind stations and other surface improving devices
- Integrated control of the brush finishing process to guarantee constant gloss and smoothness
Technical Features
- Area brush finishing instead of line brushing (no marks and streaks)
- High gloss and smoothness without reducing bulk
- A.C. variable frequency drives of brush rollers for surface improving according coating formulation
- Each brush roller rotates in either direction
- Incorporated rope system according to the board machine
- Integrated control system with PLC (Allen Bradley or Siemens S7) can be linked to process control system
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