Non uniform venting is a major cause of imbalance filling of multi-cavity injection molds. The size and position of vents have historically been determined by engineers with the assistance of material manufacturers. The consistency and tolerance of mold vents are entirely in the hands of the tool designers and builders. Most of the time vents sizes, position and tolerances go unchecked until there is a problem. Once it has been determined, there is a venting issue the toolmaker will verify vent sizes of individual components and make adjustments. Until now there hasn't been any way to check the venting of a mold assembly. This new device can check and verify overall vent sizing and uniformity of the mold.
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