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In the PET packaging industry, the preform mold is the foundation of bottle quality. A high precision preform mold directly determines preform weight consistency, wall thickness distribution, neck finish accuracy, and downstream blow molding performance. For brands and converters, mold quality is not just about dimensional control — it is about production stability, material efficiency, and long-term profitability.

At LEIZHEN, we understand this responsibility. As a specialized manufacturer of high precision preform molds, we design and build every mold to deliver repeatable, reliable, and high-output performance for PET preform injection molding systems.

Precision That Drives Performance

A preform mold must operate under high injection pressure, rapid thermal cycling, and continuous cavitation loads. LEIZHEN preform molds are machined using advanced CNC equipment and multi-axis machining centers, ensuring cavity-to-cavity consistency within tight tolerances. Each mold component — from core and cavity to neck ring and thread split — is manufactured with dedicated toolpaths and verified through in-process inspections.

Our quality control system includes CMM (coordinate measuring machine) verification, surface finish measurement, and trial sampling on actual injection molding machines before delivery. This ensures that every high precision preform mold leaving our factory meets the agreed preform weight, dimensional standards, and visual quality requirements.

Cavity Configurations for Any Production Scale

LEIZHEN offers preform molds in a wide range of cavity counts to match different output needs: 32, 48, 72, 96, 144 cavities, and beyond. Higher cavitation molds are engineered with balanced melt flow distribution, efficient cooling channel design, and robust plate construction to maintain mold stability under high-speed cycling.

Whether you run an entry-level injection molding machine or a high-output PET line, LEIZHEN provides a high precision preform mold solution that fits your production environment.

Hot Runner Systems and Material Compatibility

All LEIZHEN preform molds are compatible with hot runner systems, and we can supply complete hot-half solutions tailored to your resin type — whether virgin PET, recycled PET (rPET), or blended materials. Our mold design includes proper gate geometry, thermal separation, and drip-free nozzle integration to ensure consistent filling and reduced scrap during start-up and color changes.

Long Mold Life and Low Maintenance

Durability is built into every LEIZHEN preform mold. We use certified mold steel, heat-treated components, and hardened wear parts for high-cycle applications. Key interfaces such as guide pillars, bushings, ejector plates, and thread splits are designed for easy access and replacement, minimizing downtime during maintenance cycles.

With proper maintenance, a LEIZHEN high precision preform mold can sustain millions of cycles while maintaining preform quality. This translates to lower cost per thousand preforms and better return on investment for our customers.

Customization and Technical Support

Every bottle application is different. LEIZHEN provides custom preform mold design based on customer neck finish specifications, preform length, weight range, and bottle target weight. Our engineering team works closely with customers to optimize preform geometry for subsequent stretch blow molding, including material distribution and stress crack resistance.

We also provide technical documentation, spare parts lists, maintenance guidelines, and remote or on-site support as needed.

Why LEIZHEN

Choosing LEIZHEN means choosing a partner who prioritizes quality, precision, and reliability. We do not compromise on materials, machining, or measurement. Our team takes pride in every mold we deliver, knowing that it will run in real production environments day after day.