• By Admin
  • 2026/4/8

ZSMOLD | High-Performance Molds for Bottle Preforms and Caps

ZSMOLD is a professional mold manufacturer dedicated to delivering high-performance injection molds for PET bottle preforms and plastic caps. With years of engineering experience and a commitment to precision, we serve the global packaging industry by providing reliable, durable, and efficient mold solutions that help our customers produce high-quality preforms and closures with consistency and speed.


Precision-Engineered PET Preform Molds

Our PET preform molds are designed for superior performance across a wide capacity range – from small 150ml beverage preforms to large 20L water bottle preforms. Manufactured using advanced CNC machining centers and premium stainless steel, each mold cavity achieves micron-level accuracy, ensuring uniform wall thickness, perfect neck finish, and excellent stretch ratios for blow molding. Features include:

  • Hot runner systems for precise melt control and reduced material waste

  • Optimized cooling channels for faster cycle times and dimensional stability

  • Multi-cavity configurations from 2 to 72 cavities to match your production scale

  • Compatibility with both semi-automatic and fully automatic blow molding machines

High-Performance Cap Molds

ZSMOLD also specializes in cap injection molds for a variety of closure types, including:

  • Standard screw caps for water, beverage, and food packaging

  • Tamper-evident caps with breakable bands for security and freshness

  • Child-resistant (CRC) caps with push-and-turn mechanisms for safety applications

  • Tethered caps designed to remain attached to the bottle after opening

  • Dispensing caps and spout caps for controlled pouring and dosage

Our cap molds are built from durable mold steel such as SKS and H13, ensuring long production life and consistent closure quality. Customizable for standard neck finishes including 28mm, 38mm, 45mm, and other non-standard sizes.

Advanced Manufacturing & Quality Assurance

  • High-precision CNC machining – Guarantees consistent part quality cavity after cavity

  • Premium materials – Corrosion-resistant steel and hardened alloys for extended tool life

  • Stringent quality control – Each mold undergoes dimensional inspection and trial runs before delivery

  • Hot runner technology – Integrated systems for both preform and cap molds to enhance efficiency

Customization & One-Stop Service

ZSMOLD offers complete customization based on your bottle design, neck finish, preform weight, cap geometry, and production volume. Our one-stop service covers:

  • Mold design and simulation

  • Material selection advice

  • Precision manufacturing

  • Assembly and testing

  • Trial production at our facility

  • On-site commissioning and after-sales support

We work closely with customers to ensure every mold integrates seamlessly with your existing production line, delivering optimal performance from the first shot.

Factory Direct & Global Delivery

As a factory-direct supplier, ZSMOLD provides competitive pricing without compromising quality. We ship worldwide and have successfully partnered with bottle and cap manufacturers across Asia, Europe, Africa, and the Americas. Whether you need a small 2-cavity mold for startup production or a high-cavity system for mass manufacturing, ZSMOLD delivers high-performance molds built to last.

Partner with ZSMOLD for precision, reliability, and value in bottle preform and cap molding.