PP packing strap production line produced by adopted advance technology from Korea and Japan, with rigorous research and investigation, it develops a new generation of one-machine-double-strap production line. The production line can produce ultra-thin strap, Primary Mi packing strap, and environmental protection packing strap. The manufactured products have clear pattern, neat uniform and light weight. The main machine of double strap production line is treated by 38 chrome-molybdenum aluminum nitride with latest compression ratio in line with PP feature; it has mutant progressive screw barrel, gearbox with hard tooth surface specified for plastic production, and  high-standard configuration which all ensures the good extrusion effect.