Continuous Coater Operation and Coatings Used

Continuous Coater Operation

The Nordson continuous coater provides a controlled, uniform deposition of coating material over product surfaces. The product enters the coater via a conveyor system. Inside the coater cabinet, spray nozzles are positioned to apply coating material at line speeds of 25 to 1,000 feet (7.6 to 305 meters) per minute, depending on the application.

Coating material that is not applied to the product falls to the bottom of the continuous coater where it is collected in a sump. The material passes through a strainer, then a pump returns the material to the main paint supply. The continuous coater cabinet includes dry filter exhaust zones created by entrance and exit booth filters with stack filters near the product entry and exit ports to minimize the escape of paint particles from the cabinet. Uniform spraying and capture of overspray reduce VOC emissions and ensure minimal contamination around the paint area so housekeeping costs and downtime are reduced.

Typical Coatings Used with Continuous Coaters

Acrylics (clear and pigmented)
Asphaltums
Oleoresinous varnishes
Vinyl coatings
Waterborne top coats
Alkyds (clear and pigmented)
Oil-based paints
Pipe varnishes
Waterborne primers
UV curables