A hot runner PET preform mold is the standard for modern preform production, eliminating runner scrap and enhancing thermal control.
Scrap-Free Material Utilization
Because a hot runner PET preform mold contains no cold runner, 100% of the metered shot enters the cavities. This not only saves the cost of the runner material but also eliminates the grinding and re-pelletizing process, preserving the polymer's molecular weight and allowing immediate reuse of regrind in the injection machine without quality loss.
Manifold Temperature Homogeneity
The manifold block of a hot runner PET preform mold uses tubular heating elements contoured exactly to the flow channel route. With embedded thermocouples providing feedback to a multi-zone controller, the temperature variation across the entire melt distribution system is held within ±1°C. This prevents both cold plugs and local overheating, safeguarding the PET from degradation.
Purge Efficiency and Color Change Speed
Flow channels in a hot runner PET preform mold are polished to a bright finish and follow streamlined geometries with no dead zones. During a color change, the new material pushes the old color out as a plug, achieving full coverage in as few as 10-15 shots. This speed is crucial for converters running short batches of custom colors.
Lower Overall Energy Footprint
Eliminating the need to re-plasticize cold runners provides inherent energy savings. Furthermore, the external heating of the manifold in a hot runner PET preform mold is more efficient than internal conductive heating. Combined with thermal isolation plates, the energy consumed per preform is significantly reduced, contributing to your sustainability targets.
DEMARK - Your Trusted Partner in PET Injection Solutions.
At DEMARK, we specialize in high-performance PET preform molds and complete injection molding systems for the global packaging industry. Powered by advanced hot runner technology, ultra-precision manufacturing, and intelligent production solutions, we deliver reliable, efficient, and long-lasting tooling systems tailored to your production needs.
Our Service
Demark is committed to providing complete PET packaging production solutions and long-term technical support for customers worldwide. Our service covers the entire project lifecycle, from project consultation and equipment selection to installation, commissioning, training, and after-sales support.
Our services include:
● Professional solution design for PET preform production lines
● Machine and mold customization according to customer requirements
● Factory layout and utility planning support
● Equipment installation and commissioning guidance
● Operator and maintenance training
● Technical support and spare parts supply
● Remote troubleshooting and online assistance
● Long-term after-sales service and production optimization support
We aim to help customers build stable, efficient, and smart PET packaging factories with high productivity and low energy consumption.
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