GEW’s UV Curing Available for Newspaper Presses

By: E&P Staff

GEW (EC) Ltd. in Redhill, England, has announced development of its IsoCure system for curing UV inks on web offset newspaper presses that otherwise use conventional cold-set inks. The system enables press utilization to be expanded to printing of new types of products.

IsoCure can be fitted to existing presses, enabling printers to produce quality work on coated and uncoated paper with UV inks. Printing can be either UV or a combination with cold-set litho. IsoCure also may be OEM specified on various presses.

“We have successfully retrofitted a 12-lamp IsoCure system to a Harris press in Scandinavia running 30,000 impressions per hour … and have beta testing projects in hand for other newsprint sites,” GEW Managing Director Malcolm Rae said in a statement.

According to Rae, unlike systems requiring fans, ducting and manifolds to remove ozone and heat that lamps generate during curing, water-cooled IsoCure seals the lamp in a temperature-controlled micro-climate isolated from the plant or pressroom, with ozone destroyed within the lamphead. Without consuming expensive heated or air-conditioned factory air, the arrangement saves on UV system operating costs ande increases lamp life by keeping out dust and other contaminants. The absence of ducting and exhaust fans also affords a quieter, more compact installation.

Rae called IsoCure an “economic and ecological advancement” owing to its design and its electronic e-Brick power supply, which he said helps cut costs and “the user’s carbon footprint” incomparison with UV systems running on transformer power supplies.

IsoCure systems feature Dichroic reflectors for increased UV output and substrate temperature control, rotating cold shutter to automatically shield substrate from heat when a pres is stopped, a removable cassette with all serviceable parts to speed lamp changes and maintenance, and automatic, stepless adjustment of UV power in line with machine speed. IsoCure also offers an optional inert-gas curing module to reduce oxygen (which impedes polymer cross-linking) during curing – technology borrowed from printing of food packaging and other sensitive applications.

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