MOLDING APPARATUS, AND CIGARETTE FILTER ROD AND PREPARATION METHOD THEREFOR

A molding apparatus, a cigarette filter rod and a preparation method thereof are disclosed. The molding apparatus comprises a single-screw extrusion system and a cooling setting system, wherein the single-screw extrusion system comprises a feeder (1) and an extruder (2); the feeder (1) is arranged on the extruder (2); the extruder comprises a cylinder (11), a heater (3) is arranged outside the cylinder (11), a screw (4) is arranged inside the cylinder (11), and a mouth mold (5) is arranged at one end of the cylinder (11); the cooling setting system comprises a round tube (7) and a cooler (6); the cooler (6) is arranged outside the round tube (7); one end of the round tube (7) is butted with the mouth mold (5) of the extruder (2); and multiple groups of grooves (4-2) are formed on threads (4-1) of the head of the screw (4). The existing single-screw extruder is innovated and improved to meet the requirements of extrusion and bonding of tobacco powder and other raw materials, realize continuous production of hollow filter rods, and solve the defect that the single-screw extruder in the prior art is difficult in adapting to the processing of non-thermoplastic raw materials filter rods. Natural plant materials as main raw materials are beneficial to obtaining low-cost, environment-friendly and unique cigarette filter rods.