an injection mold for nonrigid plastic has separate mold cavities disposed on opposite sides of an intermediate mold part and fed from a common feed passage in one of a pair of outer mold parts defining the mold cavities jointly with the intermediate mold part . the intermediate mold part is divided along a plane transverse to the opening direction of the mold and its two halves are connected in accordion fashion with one another and respective ones of the outer mold parts . an extractor is disposed in the dividing plane and extends through a feed cavity which communicates with the feed channel and from which runner channels extend to the mold cavities . the feed cavity ensures a simultaneous distribution of the plastic compound to the mold cavities at both sides of the intermediate mold part upon injection , and when the mold is opened , the extractor pulls the moldings out of the mold cavities .