The Gemini coated board brand, which is currently produced at Carrongrove, has been sold to fellow Scottish mill Tullis Russell.
Inveresk chief executive Alan Walker said the mill had been operating in "very challenging market conditions", with escalating energy and raw materials costs, which it had been unable to pass on to customers.
In addition, significant investment was required and this, coupled with the volatility of the euro and the dollar, had forced the firm to take the decision.
"We feel confident our brand is passing into safe hands, but clearly it's a day of mixed emotions," said Walker.
Tullis Russell managing director Don Munro said the company would be communicating with Gemini customers, and aimed to make the transition as seamless as possible.
Munro said if there were any opportunities to take staff across from Carrongrove to Tullis' Markinch site at Fife, it would do so. He added that the same would apply to any kit that may be of interest.
Inveresk's other mill at St Cuthberts in Somerset is unaffected by the sale, and has appointed former ArjoWiggins Fine Papers regional sales director David Doorbar as general manager.
The proceeds from the sale of the business, expected to be between
13m-15m, will be used to reduce Inveresk's bank borrowings, which at the end of December last year stood at 15.7m.
In the year to 31 December 2004 the Carrongrove mill reported sales of 26.2m and operating profits of 1.62m.
Story by Andy Scott
Inveresk to close Carrongrove base
Inveresk will close its Carrongrove mill in November this year with the loss of 150 jobs.