Dual injection mold Dual injection mold is for those parts which consist with 2 color or 2 materials. It is a special plastic injection mold as the finished parts would be formed by 1 mold and 1 molding. Comparing with normal injection, there is nothing special on mold, but it request dual injection machine which consist of 2 injection sprue. We kenvox is a professional plastic injecftion mould manufacturer, . We can make over mould, gas assisted mold, IMD Mould, dual injection mould according to customer's samples and drawings.