Elmy has previously worked at Centurfax, Russell-Webb and RW Coatings, and has more than 35 years experience in the printing industry.
Rolf Basty, chairman of Baco Chemical Services, said: "We have been looking for the right person to help us grow our international business, so when we learned that Martyn Elmy was available, we moved very quickly to secure his services."
Elmy added: "Having discussed the Baco range of printing chemicals, surfactants and additives with leading experts I am confident that Baco products are unsurpassed in this industry.
"I look forward to offering these to other companies, to help shorten the lead time for them to achieve the latest Fogra approvals and new REACH, MSDS standards."
Baco was formed in 2007 in Ireland by Basty, and the company develops and produces surfactants and additives for the production of printing chemicals for pre-press and press-room applications.