Vented Ejector Pins Targets More Efficient Gas Removal for Molds

Next Chapter Manufacturing presents its NXC vented ejector pins which target the persistent problem of gas traps in molds. Unlike traditional venting methods, which lead to high scrap levels, cracking and weak parts that may result in rejections and lost profits, the company says its ejector pins, 10-15 times the venting volume over traditional venting, enable gas to exhaust out of the mold efficiently.

A drop-in replacement for industry-standard ejector pin sizes, the patent-pending design is made from H-13, manufactured via metal 3D printing and ground to exacting tolerances for a proper fit. The full dense outer surface is PVD coated to ensure smooth fit and consistent wear against galling or stuck pins. The integrated porous core (20-30 microns) enables gas to pass through the face of the pin and vent out to atmosphere on the side of the pin through ports. Next Chapter Manufacturing says these pins are suitable for all typical filled and unfilled plastic resin grades.

Pins can be placed in the area where a gas trap or burning is present on plastic parts to enable the gas to exhaust out. These can also be placed at end of fill under the part to provide venting where parting line vents may become blocked or coined over.