SCS EQUIPMENT SPRAY COATING & DISPENSE SYSTEMS

New to Selective Coating?

Many areas of manufacturing depend on conformal coatings to help ensure dependable performance under challenging conditions. Applications where coating is essential include electronics, automotive assemblies, industrial controls, domestic appliances, consumer products, military and aerospace systems and medical devices.

Conformal coatings provide dielectric insulation, protection against moisture, hydrocarbons, dust, and other contaminants, and improve resistance to abrasion, thermal shock, and vibration. To be effective, a conformal coating must be free of pinholes, have sufficient film buildup on all surfaces, and be applied evenly to provide the necessary barrier against the elements.

The most common methods to apply conformal coatings include brush-on coating, dip coating, spray coating and vacuum deposition (e.g. Parylene coatings). Each method offers advantages and disadvantages, ranging from set-up and preparation issues to the actual reliability of the coating process.

Selective Coating

Selective Coating is a more recent development among conformal coating methods. Selective coating combines the advantages of several coating methods into a single coating method.

By using an inline conveyor system and a spray head mounted on a robotic gantry, a wide variety of manufactured devices can have conformal coating applied only to targeted areas, allowing connector pins to be free of coating.

Modern selective coating systems also feature a dispense needle for more precise coating applications, whereas the spray valve may be used for wide area applications. The two heads, working together, give the best balance of accuracy and efficiency.

Benefits of Selective Coating

• Lower labor costs – Modern selective coating systems save significant time by eliminating much or all of manual masking and demasking processes.
• Reduces material usage – Coating material is only applied to desired areas, not wasted on areas that do not require conformal coating protection.
• Improves overall quality of product and work/health environment – Modern selective coating operations use a fraction of the coating material, are well ventilated, and have significantly less overspray of coating materials and solvents.