PURPOSE: To obtain constantly a high quality molding article by disposing a net-shaped member between rolls and a molding substance in a molding substance receiving region of a plastic extrusion molding apparatus.

CONSTITUTION: A plastic molding substance 15 extruded through a mold 2 is cooled by means of a cooling device 3. And, in a molding substance receiving region 7, it is received while being clamped and braked by receiving rolls 5 and 5 of a roll receiving machine 7. Furthermore, it is introduced to a constant length cutting machine 8 for cutting by a cutter 9 into an appropriate length, and reachs a stacker 10. Here, it is important that a net-shaped member 6 are disposed between the receiving rolls 5 and the molding substance 15. Besides, the net-shaped member 6 may be so provided that it is wound cylindrically round at least one of single rolls of the roll receiving machine 7. In this manner, slip between the rolls 5, 5' is prevented at all times, as the result, the occurrence of rough surfaces and voids of an extrusion molding is prevented, so that a high quality molding article can be obtained constantly.