PRESS DRYING/CURING--The ABCs of Press Drying

The filtered system consists of a medium-pressure mercury vapor UV lamp that produces approximately 25 percent UV output, 25 percent white light and 50 percent infra-red (IR). In some UV curing processes, such as plastic, foil or lightweight substrates, the heat of IR causes problems. To alleviate this, Baldwin Technology places quartz filter tubes in front of the UV lamp. De-ionized water is pumped through these tubes, allowing pure UV to emit while filtering out 90 percent of the IR, resulting in a cool substrate. There is no need for shutters in this system.