The firm announced in November that it was in consultation with employees over the closure.
The decision to close the mill was due to gas and electricity costs rising by 160% to create an annual energy bill of 2.5m, against sales of 10m.
Mill director Alan Wilson said there would be a phased shutdown up until April, when the remaining 35 staff would leave. Some 60 staff were made redundant this month.
Wilson said stock, papermaking machinery and equipment would be sold off.
The games and print divisions of the group were unaffected by the closure.
The mill specialises in the production of recycled paper and bespoke mailing products, producing 23,000 tonnes per year.