mould for injection moulding a chain continues to slide fasteners

摘要

Disclosed are molds, one being stationary the other movable, for the injection molding of continuous slide fastener chain, each of the molds being provided with a upper runner stopper located at the end portion of a runner cavity on the tape entrance side of the molds, the upper runner stopper having a trapezoidal portion which projects toward the interior of the runner cavity, and with a lower runner stopper disposed on the tape exit side of the molds, the stationary mold having a positioning stopper adjacent said lower runner stopper, the positioning stopper having a trapezoidal portion of a shape to engage with a recess formed in the posterior end of a runner by means of the trapezoidal portion of the upper runner stopper.