Movable Tempering Stamp Can Eliminate Surface Defects

Incoe says Heat-Inject Technology enables a part’s surface quality and cavity filling to be optimized via localized mold temperature control with targeted heat pulses. In addition to reducing knit lines that form around holes and openings on a part, Incoe says Heat-Inject can also improve melt flow through cold runner fan gates or thin-wall sections of the cavity. An add-on module for Incoe’s unitized manifold systems, Heat-Inject features simple design and implementation, eliminating larger mold modifications and the higher costs associated with alternative solutions to such surface defects. It also features low power consumption — only 220V AC/30-amp power input is required.

Based on the patent-pending Z-system from Incoe partner Hotset, Heat-Inject is not an additional heater, but a movable tempering stamp, with a heated tip that introduces a heat pulse by briefly pressing against the rear wall of the cavity. With this technology, weld lines and flow lines are technically still there, but they’re no longer visible on the surface.

At the show, Incoe is featuring a hot runner and mold equipped with Heat-Inject, as well as the company’s Flight Attendant technology, running on an all-electric LS Mtron LSG-240 E injection molding machine with a Sepro robot. Three through-holes in transparent components will demonstrate Heat-Inject’s elimination of knit lines. The company is also showcasing its ZTT valve-gate hot runner and the I-Series Pro and GSC2 Mini controller technologies.