The utility model discloses a screw extruder for
processing packaging bag sealing strips, which relates to the technical field of sealing strip production equipment and comprises a base, an extruder body is arranged on the left side of the top of the base, and an
extrusion die is arranged at a
discharge port of the extruder body. An inserting block, a second telescopic rod and a second spring are arranged at the position, located at the discharging port, in the extruder body through a sliding block, an inserting hole used in cooperation with the inserting block is formed in the
extrusion die, a
handle is arranged on the outer wall of the sliding block, and the base is provided with a conveying roller, a conveying belt and a discharging groove through a mounting frame. Under the action of the
insertion block, the
extrusion die can be fixed, and meanwhile, the extrusion die can be conveniently disassembled, so that the extrusion die is replaced and matched with the
insertion rod for use, the fixing quality of the
insertion block on the extrusion die is improved, and the
production quality of an extruder is further ensured; and under the action of the conveying roller, the pressing roller, the conveying belt and the discharging groove, the discharging efficiency is guaranteed.