Abstract: A mold assembly for producing a plastic container having internal compartments separated by partitions. A male mold is slidably moveable into a female mold and includes a plurality of upstanding cores to form the container with injectors provided to force plastic melt between the molds and between the cores. A plurality of side locking members are reciprocably mounted in the cores and when extended contact adjacent cores limiting relative motion therebetween. The locking members form holes in the partitions formed between the cores. The locking members are withdrawn only after the plastic melt is cooled.

Abstract: An injection mold assembly having means to stabilize interior components. A male mold has a plurality of upstanding cores with free distal ends extending into a female mold. A plurality of wedges extending from the female mold are positioned between some of the cores to limit movement thereof as plastic material is injected into the mold assembly at other locations to cooperatively with the wedges limit movement of the free distal core ends.