Method and injection tool for making a plastic link conveyer, in particular a ball chain.

A ball chain is prepared in the manner of plastic in an injection mold (18, 20). that a plurality of lined-up on a cord (3) balls are injected simultaneously. The cavities (8) in the injection mold to form the balls are each provided with side channels (10) in conjunction and open into a common injection cavity (12). Directly at the transition of the side channels (10) to the cavity (8) is a narrowing (14) of the cross section available. This prevents that can be transferred to the balls on cooling the shrinkage of the (12) located in the material elongated injection cavity and thereby give pitch errors.