A process of manufacturing paperboard includes mixing a predetermined weight percentage of polypropylene and a predetermined weight percentage of polyethylene in a tank; heating the tank to a predetermined temperature for forming an adhesive of the polypropylene and the polyethylene; flowing the adhesive out of the tank to coat on an outer surface of an endless, continuous paperboard member moving thereunder; and moving an endless, continuous textile to place on the adhesive at a joining line of a pair of opposite rotating rolls so that the rolls press the textile, the adhesive, and the paperboard member to cause the adhesive to adhere the textile and the paperboard member together to produce the finished paperboard having a textile surface.