Solve the problem of edge deposits
A new BTG Service Package helps tissue makers keep Yankee edges clean, for consistent quality output and fewer production headaches.
Edge contamination – usually visible as whitish ‘belts’ around the Yankee edges – is a relatively common problem for tissue makers which can compromise paper quality and negatively impact production efficiency.
Manufacturers using high-performance long-life blades like BTG’s Duroblade® sometimes report that edge deposit problems are exacerbated because dramatically reduced blade change frequency means deposits tend to thicken and harden during long blade operation times. That in turn can increase the risk of tears in the paper edges.
Edge deposits can also lead to vibrations in the creping and cleaning blades at the Yankee bare edges. That could create chattermarks that begin in the deposit rings, then successively spread out, sometimes to the full width of the Yankee dryer.
Figure 1:
Heavy fiber/fines build-up at a crescent former machine
Figure 2:
Edge build-up from fibers and coating chemicals
What causes deposits?
Edge build-up is caused by the deposition of fibers, fines, fillers and other dissolved components – hemicellulose, wet strength agent, softener – from the head box.
Edge spray chemicals and hard water are another common cause.
A fully customized package designed for tissue makers
Developed by tissue specialists through hands-on experience working with the world’s leading mills, BTG’s Duroblade Edge Contamination Cleaning Service Package has the potential to save customers up to EUR 100,000 a year.
Figure 3
Edge Contamination Cleaning Service
BTG’s Edge Contamination Cleaning Service Package can be implemented on any type of machine, whatever the speed and regardless of the forming technology.
Our portfolio of specialized solutions is fully adaptable to all processes, with fast and visible improvements on:
- Crescent Former
- Fourdinier Table
- Twin wire and S-Former
The package covers comprehensive analysis of the contamination situation by a BTG tissue expert, edge cleaning solution principle drawings, installation recommendations, nozzle recommendations, customized cleaning nozzle package, start-up and adjustment support, and full follow-up to ensure contamination cleaning efficiency.
Key benefits include:
- Increased blade lifetime potential
- Fewer web breaks
- Reduced problem of chattermarks
- Improved creping efficiency
BTG pioneered and manufactures Duroblade, the world’s first and most successful range of high-performance long-life creping blades, and is a leading expert in all aspects of paper making, with nearly 90 years’ experience developing advanced pulp and paper solutions.