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PET Jar Mold

PET Jar Mold is designed for high-volume production of wide-mouth PET containers used in food, cosmetics, and household packaging applications.

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Description

Product Overview

PET Jar Mold is designed for high-volume production of wide-mouth PET containers used in food, cosmetics, and household packaging applications.

The mold is engineered for stable dimensional control, balanced cavity filling, and consistent performance in continuous injection molding environments. It is suitable for long production cycles where repeatability and maintenance stability are required.

Technical Specifications

Compatible Resins	PET / Recycled PET (rPET)
Neck Diameter Range	38mm - 120mm (Wide-Mouth Customization)
Cavity Options	1 to 48 Cavities
Driving System	Pneumatic / Hydraulic Valve Actuation
Compliance	Manufactured under ISO 9001: 2015 quality management systems with proprietary, multi-patented hot runner technology.

Core Engineering Advantages

Optimized cooling water circuits combined with Beryllium Copper (BeCu) inserts maximize heat dissipation to achieve a stable 12-15 second cycle time for high-volume production.

Custom-engineered pneumatic valve-gated hot runner systems minimize gate stringing and flash, ensuring a clean gate finish for wide-mouth jars.

Utilizing hardened stainless steel mold bases (HRC 48-52) protects against corrosion and extends operational lifespan to reduce long-term maintenance costs.

Fully interchangeable cavity and neck-ring sliders allow operators to adapt the same mold base for different jar capacities or weights, reducing capital expenditure.

High-precision CNC machining maintains concentricity tolerances under 0.1mm, ensuring consistent thread alignment and leak-proof capping for downstream packaging lines.

Manufacturing Capability & Quality Control

Machining is carried out using Japanese CNC systems (Okuma) and EDM equipment (Sodick) to ensure controlled precision in cavity and core manufacturing.

Each mold undergoes a minimum 72-hour continuous trial run under production-equivalent injection conditions.

This testing process is used to evaluate:
Cavity balance consistency under continuous operation
Hot runner thermal stability
Injection filling behavior across cavities

Each shipment includes:
CMM dimensional inspection report
Trial run video records
Injection parameter reference sheet for production startup

Spare Parts & After-Sales Support

Critical wear parts are supplied with each mold for initial operation support. Standard spare components can be shipped via international express depending on request.

Technical support is available for mold installation, parameter adjustment, and production start-up guidance.

FAQ

Q: What steel material do you use for the cavities and cores?

A: We use high-grade hardened stainless steel (such as ASSAB STAVAX ESR or 4Cr13, hardened to HRC 48-52) combined with Beryllium Copper to ensure durability and fast cooling.

Q: Can one mold base produce different sizes of PET jars?

A: Yes, our molds feature a modular design with interchangeable cavities and neck sliders, allowing you to produce different jar capacities or weights on the same mold base.

Q: Do you test the mold before shipment, and how do you verify quality?

A: Every mold undergoes a 72-hour continuous trial run in our factory. We provide you with the trial video, sample jars, and a full CMM dimensional inspection report before shipping.

Q: What is the typical lead time and guaranteed mold life?

A: The standard manufacturing lead time is 45 to 60 days. Under proper maintenance, we guarantee a mold life of at least 2.5 million shots.

Q: How do you handle spare parts and after-sales support for overseas clients?

A: We ship a complimentary set of critical wear parts (heating elements, nozzles, and seals) with the mold. Replacement parts can be dispatched via international express within 24 hours.

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