Roeslein Ultra Violet Bottom Coating (UVBC) is a mass bottom coating and ultra-violet curing system used in the D&I can manufacturing process. The UVBC system applies a more wear-resistant coating, that provides superior protection to the bottom rim surface, resulting in the reduction of aluminum oxide formation, optimizing transfer to can conveyors, transfer plates, and machine infeeds. Conventional bottom coatings are typically applied after Basecoating or Decorating with a thermal-cured process in a single lane bottom coater. Roeslein’s standard 36-inch wide unit will process up to 4400 cans per minute.
Typically, D&I can manufacturers install the UV Bottom Coating System immediately after the washer in a dome-down orientation. One of the key differences between Thermal-cured and UV cured bottom coating materials is a thicker, more uniform coverage.
- Superior control of film weight
- Provides uniform coverage resulting in 10-15% material savings
- Improved adhesion, greater mobility and excellent corrosion resistance the UV cured application offers dry film thickness of 7-9 microns with 100% solids, compared to 1-2 microns with 35% solids with thermal cured application