It was officially opened by Deputy First Minister of Wales with responsibility for Climate Change and Rural Affairs Huw Irranca-Davies during a visit to the company’s headquarters in Knighton.
The £5m investment will allow Radnor Hills, which celebrates its 35th anniversary this year, to increase its overall carton capacity by 150%, from 60 million to 150 million packs annually.
As well as helping to deliver more than 20 new jobs, the new line will enable Radnor Hills to meet the consumer demand for this format and to expand into markets including the NHS, schools and travel sector.
Huw Irranca-Davies said: "I'm delighted to officially open this state-of-the-art production line, which demonstrates Welsh innovation at its best – a family business that has grown from local roots to become a UK leader whilst staying true to its Welsh heritage and our exceptional natural resources. This investment shows how our successful Welsh businesses can boost our economy, grow our skills and jobs, and benefit our local communities too.”