Advantages and disadvantages of injection molding

The injection is also a machine made shoe, and the help face is ligation on the last of the last. Generally, it is directly injected into the PVC, TPR and other materials by the turntable machine to form the sole, and now there is a PU (chemical name polyurethane) injection molding (machine and mold are not the same as the usual injection).
Advantages: because the machine is made, the output is large, so the price is low.
Disadvantages: if there are many styles, it is more troublesome to change moulds, and the shoe is difficult to set, and it is not cold and sticky.