Roll to Roll Slot-Die/Screen Printing Line

Applications for this tool are wide ranging and include flexible OLED, photovoltaics, LEEC, OTFT and printed batteries amongst others. Working with CPI companies can produce production-ready, thin film devices in quantities and at a price point that clearly demonstrates the data needed to bridge the gap from lab scale samples to market seeding samples.

The system comprises of both slot-die and screen printing capability, with options to incorporate other printing techniques such as reverse gravure. The function of the roll to roll coating line is to apply a layer on a web via a slot die coating process or a screen printing process. To ensure a correct coating layer, the web is accurately controlled based on speed, tension and lateral displacement. The machine contains two process stations; both capable of handling a slot die coater or a rotary screen printer. The tool is equipped with a UV curing unit and up to 4m of convection oven drying, able to deliver temperatures of up to 250°C.

The machine processes PET/PEN foil substrates ranging from 25 – 250μm thickness and has a web width of between 200mm and 410mm and a web tension range of 50 – 350N. The slot dies are capable of coating over a width of up to 300mm, blanket or stripe pattern coating with a wet coating thickness of 5 – 100µm. They can handle a viscosity range of 5 to 10000cP and are compatible with water, isopropanol, toluene, cyclohexanone, 2‑butanone, anisole, acetophenone, acetone and similar solvents. The slot-die heads are resistant down to pH 1.