The deal, which is worth around £4.5m, will mean The Katz Group becomes part of the £600m-turnover German paper company.

Katz UK managing director Garry Hobson said the investment from Koehler was a "clear signal that the long-term future of Katz and its associate companies will continue".

He added: "The coaster is a perfect advertising medium for all brands, whether promoting traditional drink and food products or non-drink related products and services."

Through the deal, the company is set to launch a new online ordering portal that will allow Katz customers to buy personalised products on-demand.

Koehler board director Kai Furler said: "Katz and Koehler are similar in many ways - both are world leaders, and both aspire to be cost leaders in their sector. This makes the acquisition right from the beginning and we look forward to a profitable, stronger future together."