Why Choose Our Molds?
High efficiency for large-scale production
Reliable preform quality across all cavities
Compatible with a wide range of injection molding machines
Support for fast mold changeover and flexible production
Massive Shot Capacity
A Gallon bottle preform mold is designed for shot weights often exceeding 600 grams. The hot runner manifold incorporates large-diameter channels and oversized nozzle bores to deliver this melt volume without generating excessive shear or pressure drop. The mold is engineered to fill these large cavities within a standard injection window.
Core Stability Under Immense Weight
The core pins in a Gallon bottle preform mold are solid, heavy components weighing several kilograms each. We use a multi-point support sleeve that anchors the core pin both at its base and its tip during injection. This dual support eliminates any sagging, ensuring the gallon preform wall is perfectly concentric.
High-Volume Production
Our gallon bottle preform mold is designed for large-scale production, supporting multi-cavity configurations that increase output per cycle. Precision-machined cavities ensure uniform weight, wall thickness, and neck dimensions across all preforms. Optimized cooling channels reduce cycle time while maintaining dimensional stability, allowing manufacturers to meet high-volume demands efficiently. Durable construction and stable operation minimize downtime, making this mold ideal for water, juice, and other gallon-size PET bottle production.
Bottom Gate Position for Droplet Control
A gallon preform needs a clean gate to avoid base weakness. The Gallon bottle preform mold uses a bottom-gated valve system with a long, slender valve pin that shuts off at the exact cavity surface. The system is designed to handle the speed and precision required for large gates, ensuring a perfect seal every cycle.
Designed for demanding PET preform production, our molds ensure repeatable accuracy, reduced cycle variation, and reliable performance, giving manufacturers full confidence in high-speed, high-volume operations.
Warranty & Service Commitment
Investing in PET production equipment is a long-term decision. That's why every Demark solution is backed by comprehensive warranty coverage and dedicated technical support.
From machine installation to daily operation, our engineering team is available to assist customers with troubleshooting, process optimization, spare parts supply, and maintenance guidance.
We stand behind the quality of our equipment, molds, and automation systems, ensuring reliable performance and production confidence throughout their service life.
With Demark, warranty is more than protection-it's a commitment to your success.
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