Not necessarily will be injected in the same injection molding machine, divided into two molding; products from a set of mold out of the mold out of the mold, and then into another set of molds for the second injection molding.
Can be molded and processed with ordinary injection molding machines, the investment in equipment is relatively small.
It is not suitable for precise double and multi-material injection molding products; the molding cycle is relatively long, and the production efficiency is lower than that of two-color molds.