Why Standard Electric Hot Runners Fail with PVC Pipe Fitting Molds: Oil Temperature Heated Hot Runner Technology Explained
PVC hot runner systems are notoriously difficult to get right. With a processing window of only 160-180°C, standard resistance-heated hot runners with ±5-10°C temperature fluctuations eat up more than half of that safety margin, causing yellowing, short shots, gate burns, and corrosion. This article explains how oil-temperature heated hot runners solve the temperature uniformity problem, covering the dual-pump dual-temperature dual-oil-circuit design, split layout advantages, and real-world production data from 8 years of R&D and over 300,000 production cycles.
