Preform Mold

Your Premier Preform Mold Manufacturers

Our industrial-grade PET Preform Molding Machines are engineered specifically for high-speed, high-volume production of premium PET preforms used in beverage, food, cosmetics, and pharmaceutical packaging.

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Product Specifications

Mould material	MOLD BASE :P20H or 4CR13 Stainless steel
Runner	NEW THIKNING HOT RUNNER /HUSKY /YUDO HOT RUNNER FOR OPTION
Standard	NEW THINKING STANDARD
Specification drawings	Pro/E, Auto CAD, Solidwork, CAXA UG, CAD/CAM/CAE.
Precision machining	CNC, milling machine, drilling machine, numerical lathe, all types of lathe
Surface finish process	Polishing, sand blasting, heat treatment, painting, powder coating, anodizing, electroplating, mirror polishing .
Shaping mould	Injection mould
Service	OEM service available, good after-sales service .
Lead time	4-7 weeks, 40 days or according to the real situation .

Available Cavity Options

Low to Medium Volume (Pilot & Specialized Lines)

4, 8, 12, 16, and 24 cavities. Ideal for large-volume containers (e.g., 5-gallon water, 5L edible oil jars) or specialized cosmetic packaging.

High-Volume Commodity Production

32, 48, 56, and 72 cavities. Standard matrix layouts optimized for high-speed beverage and mineral water bottling lines.

Mass Industrial Scale

96, 128, and 144 cavities. Engineered exclusively for global beverage conglomerates running ultra-high-speed, specialized PET preform systems with advanced post-mold cooling (PMC) integration.

Neck Finish Options

Beverage & Water Standards

PCO 1881, PCO 1810, 29/25, 30/25, Corvaglia, and tethered-cap compliant alternatives.

Oil & Large Container Standards

29/21, 32mm, 36mm, 45mm, and 48mm neck finishes.

Cosmetics & Wide-Mouth Jars

SP400, SP410, and custom wide-mouth designs ranging from 53mm up to 120mm for food storage jars.

Machine Compatibility

Dedicated PET Systems

Netstal (PET-Line), Husky (HyPET / NexPET), Sacmi (IPS), and KraussMaffei.

Standard Servo-Hydraulic Machines with PET Packages

Customized backplates, core-pulling interfaces, and hot runner control pin-outs matching Haitian, Yizumi, Borch, and other leading Asian/European injection machinery.

Quality Inspection & Verification

3D Coordinate Measuring Machine (CMM) Verification

100% inspection of critical dimensions on every single core, cavity, and neck ring against the approved CAD model.

Concentricity Testing

A minimum 4-hour continuous trial run on our in-house test machines to verify hot runner temperature balance (within ±1°C), pneumatic valve pin timing, and cooling circuit flow rates.

Continuous Dry-Run & Wet Test

A minimum 4-hour continuous trial run on our in-house test machines to verify hot runner temperature balance (within ±1°C), pneumatic valve pin timing, and cooling circuit flow rates.

Preform Laboratory Analysis

Inspection of molded samples for AA levels, structural weight deviation (tolerance within ±0.2g), and polarization testing to check for residual internal stresses.

FAQ

Q: What hot runner system do your preform molds use, and how do you prevent gate drooling?

A: We utilize a proprietary valve-gated hot runner system engineered with individual pneumatic piston cylinders for each cavity. The valve pins are mechanically driven to close the gate cleanly before the mold opens. This completely eliminates gate drooling, stringing, and un-melted "cold slugs" at the injection point, leading to crisp, flat gates.

Q: How do you achieve optimal cooling to keep cycle times under 10 seconds for water preforms?

A: We use a "spiral cooling channel" layout inside each core and cavity insert, maximizing the surface area exposed to chilled water. Additionally, the thread area utilizes high-heat-conductivity copper alloy inserts (Ampco 940). When paired with an efficient external mold dehumidifier and 6°C chilled water, this setup achieves sub-10-second cycle times for lightweight water preforms (under 15g).

Q: Are your mold components (cores, cavities, neck rings) interchangeable if one gets damaged?

A: Yes, 100%. Because we machine all components on high-precision 5-axis CNC mills with a component tolerance of ±0.005mm, every core, cavity, slide, and neck ring is fully interchangeable. If a component is damaged by operator error, we can ship an exact replacement via serial number tracking without requiring you to ship the mold back.

Q: How does your mold design prevent the "short shot" or air-trapping issue?

A: Air trapping usually happens when gas cannot escape the cavity fast enough during high-speed injection. Our molds incorporate specialized, micro-grooved venting slots around the neck ring split faces and the parting lines. These vents are wide enough to let air escape freely but narrow enough (under 0.01mm) to prevent PET resin from flashing out.

Q: Can your molds handle high percentages of Recycled PET (rPET)?

A: Yes. However, rPET contains highly abrasive microscopic particulates and releases more corrosive acidic outgassing during melting. To combat this, we recommend upgrading the core and cavity steel to Electro-Slag Remelting (ESR) stainless steel with additional titanium/chrome surface coatings (such as PVD coating) to double the wear resistance.

Q: What is the lead time for a 48-cavity PCO 1881 preform mold from design to shipment?

A: A standard 48-cavity mold requires 45 to 60 calendar days. This timeframe includes 7-10 days for final product/mold design approval, 30 days for precision CNC machining, heat treatment, and assembly, and 7 days for in-house testing, sample optimization, and final CMM compliance auditing.

As one of the best preform mold manufacturers and suppliers in China, we have world-leading production equipment and strong manufacturing capabilities. We warmly welcome you to buy high quality preform mold for sale here from our factory. Good service and punctual delivery are available.