Full-Service Supplier of Thermal Spray Coating, Laser Cladding, and Machining
On-Site Roll Cleaning
Restoration of Roll Performance with Minimal Downtime
Many web handling applications, such as paper and textile manufacturing and converting, suffer from progressive contamination of roller surfaces over time. Adhesives, fillers, fibers, coatings, and stock can all accumulate on roll faces and can negatively affect product quality, appearance and uniformity. Traction surfaces on winders and reel drums become smoother and more likely to slip, and winding efficiency and quality can suffer. In many cases, the metal roll surface is undamaged and the problem is due entirely to the contamination that has built up on top of the surface. When this is the case, the roll face can often be restored by removing the debris and cleaning the roll face by blasting, either with abrasive or with dry ice pellet (depending on the nature of the contaminant). This is a much faster and simpler process than complete roll resurfacing by thermal spraying, or roll removal and re-grinding.
Roll cleaning is an on-site service we perform, usually during a shutdown or outage. A preliminary inspection will permit our sales team to make an assessment of the roller surface to determine if cleaning will be sufficient or if resurfacing is necessary. By electing to clean the roll face rather than strip and recoat, the turnaround time for an on-site resurfacing operation can be reduced by more than 50%. The determination is typically made by an evaluation of the remaining thickness of applied traction coating still on the roll. The time and cost savings of cleaning on-site are far more substantial for non-coated rolls, where the alternative would be removal and re-grinding of the roll face.
On-Site Roll Cleaning Applications
Winders and Reel Drums
- Typically coated for traction with a moderately rough surface
- Contamination can fill the valleys within the traction coating, leaving the surface smooth.
- Cleaning quickly restores surface roughness, traction, and sheet tension.
- On-site crews deploy with sufficient material and equipment to re-coat when cleaning alone is not enough to restore performance
Dryer Cans and Idlers
- Stickies, sizing, and other contaminants tend to accumulate on the first cans in the stack.
- Scraping and abrasive scrubbing often leave some residue and can scuff the can surface, both of which create zones that attract new buildup.
- Blast cleaning with or without the application of a release coating ensures the entire face of the roller is clean
Roll Cleaning Application Criteria
Roll cleaning is typically suggested when the metal surface of the roller can be determined to be in relatively good condition. For coated rolls, this typically means that most of the metallic coating remains and that there is no evidence that the coating has been mechanically damaged, chipped, or blistered. For uncoated rollers, there should be no evidence of gouging, scarring, or any other defect in the metal shell that could only be remedied by re-grinding. Inspection by a member of our sales team will determine roll condition and also assess whether the contamination on the roll face can be removed by our equipment. Some contaminants such as heavy plastics, asphalt, and other similar thick and gummy materials may resist cleaning by blasting and will need to be scraped off before cleaning will be effective.
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On-Site Roll Cleaning Quote Request
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Roll Cleaning Quote Request
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