Rainbow Technology Systems (RTS) have developed a wide range of innovative liquid coatings designed specifically to deliver high product performance to a wide range of industry segments to include:

  • Electronics
  • Glass
  • Aerospace
  • Furniture
  • Composites
  • Construction
  • Automotive
  • Promotion and Display.

We deliver both permanent and peel-able coatings which can be dried in many formats from air drying to UV. RTS permanent and peel-able (removable) protective coatings can be applied to a wide range of materials such as glass, metals, PVC, wood, composites. RTS active coatings have been developed to deliver high resolution circuitry in Printed Circuit Board Electronics (PCB) manufacturing. Rainbow Etch Resist coatings can be imaged using industry standard technology. Our team of Chemists have a wealth of expertise and experience in the formulation, required operating parameters, and application of liquid inks and coatings across a broad spectrum of materials and frequently meet with customers to support their needs and expectations.

RTS have developed a range of Coaters which deliver high performance coating and drying for both the range RTS Coatings, and other coatings. Our suite of Coaters range from ‘prototyping’ Desktop units for use in product development and low-quantity production, through to double-sided coating of large format substrates for serial production.

RTS have developed a UV curing solution that delivers optimum curing of coatings. Requiring low energy and low heat levels, the RTS UV Array delivers high efficiency of curing at low cost and can be included in RTS Coaters as an in-line, highly efficient drying medium.

Rainbow Desktop Coating System

The Rainbow Desktop Coating System was designed to bring the benefits of Rainbow’s solvent free wet resist to customers with small scale manufacture or research and development requirements. The machine can also be used for other coating and laminating applications. The system can be used to coat and UV cure a working area of 12” x 18” (305mm x 460mm).

The machine utilises a coating bar to spread liquid coatings; the coating bar is driven over the machine bed by an automatic traverse system which ensures consistent movement speed and therefore repeatable processing.

The machine also comes as standard with dispensers for spoils paper and laminating material. A contact cleaning system helps to minimise contamination during operation.

Where the Desktop Coating System is used with Rainbow’s liquid etch resist, two curing options are available; a hand held manual system or an automated system that mounts onto the traverse unit. The manual system allows the operator to target specific areas, adding masks or similar, whilst the automated unit gives repeatable performance, instantly curing (typically in conjunction with a phototool) immediately after the liquid has been spread.

When working with phototools, the Desktop machine can be used to apply a UV curable liquid protective coating to the phototool, a specific lamp unit is available for this purpose.

  • Coating, laminating and curing capability
  • Ideal for samples up to 18″ x 12″
  • Automatic traverse with speed selector
  • Spoils paper and laminate roll dispensers
  • Contact cleaning system
  • Available in both 220-240V and 110V configurations
  • Can be used to coat and cure phototool protective coatings


Power Supply:   110V – 240V

Fuse Rating:  13A

Max. Size Substrate:  12” x 18″ (305mm x 460mm)

Height: 330mm

Depth:  560mm

Width:  1270mm

Coating Thickness:  Depends on coating bar used

Machine Weight: 35Kg

Rainbow Singulation System

The Rainbow Singulation System is a fully automated coating and laminating machine that takes a copper panel, cleans it, coats it top and bottom with solvent-free etch resist, laminates it with thin mylar, seals the edges with UV light and ejects the panel ready for imaging in a digital imaging machine such as LDI or DMD.

The patented Rainbow solvent-free etch resist remains liquid after coating; there is no need for an oven as there is no solvent to release. The resist coating is thin and protected by mylar, and the machine automatically seals around the edge of each panel to allow easy, safe handling.

Rainbow resist is far easier and faster to cure in the digital imaging machine than dryfilm, requiring significantly lower power and enabling faster scanning. Throughput through the digital imaging machine is immediately increased.

After imaging, the mylar is peeled off and the panel goes through develop, etch and strip in the same way as a dryfilm panel. Because of the thin coating and liquid state of the uncured resist, developing, etching and stripping is faster and easier than is normal, typically meaning that existing etch equipment can clear out higher density circuits (finer track and gap).


  • Power Supply: 220-240V, 20A
  • Fuse Rating: 25A
  • Max. Panel Size: 24.5″ x 21″ (622mm x 533mm) on standard system
  • Throughput: Typical 3 panels per minute

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