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Short Neck PET Preform Mould

Compact Neck Design – Developed for PET preforms with short neck finishes, maintaining accurate neck dimensions and stable part geometry during high-speed injection molding.
High-Precision Moulding – Controlled cavity, core and neck-finish tolerances help ensure consistent preform weight, wall thickness and dimensional accuracy.
Efficient Cooling – Optimized cooling channels support uniform temperature control, reducing cycle variation and improving production stability.
Production Compatibility – Available in multi-cavity configurations and can be engineered to match different preform designs, weights and injection platforms.
Application Flexibility – Suitable for PET packaging requiring compact neck structures, including beverage, food, personal care and other lightweight packaging applications.

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Description

Technical Parameters

Short Neck PET Preform Moulds

Precision Neck Finish Design for Short Neck PET Preform Moulds

Thread Profile Control – The neck finish is engineered with controlled thread geometry to support accurate engagement between the PET preform and the corresponding closure.
Dimensional Consistency – Critical neck dimensions are controlled across cavities to minimize variation in diameter, height and profile, supporting stable downstream production.
Concentricity Management – Accurate alignment between the neck finish, core and cavity helps maintain consistent preform geometry and reduces eccentricity-related forming issues.
Closure Compatibility – The mould can be configured according to the specified neck finish standard and closure requirements, ensuring the preform is produced to the required interface dimensions.
Cavity-to-Cavity Control – For multi-cavity production, the neck finish geometry is matched across cavities to maintain consistent output and reduce dimensional variation during continuous operation.

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SZ-MOLDTECH's Engineering Approach to Short Neck PET Preform Moulds

Application-Based Engineering – SZ-MOLDTECH develops short neck preform moulds according to the actual bottle structure, preform specification and intended production conditions rather than applying a fixed mould configuration.

Detailed Preform Analysis – Our engineering team evaluates neck finish requirements together with preform weight, length, gate position and overall geometry to establish an appropriate mould design before manufacturing.

Manufacturing Process Control – Key mould components are processed through controlled machining, EDM, grinding and polishing procedures, with dimensional checks performed at relevant production stages.

Production-Oriented Configuration – Cavity layout, mould structure and component arrangement are considered from the perspective of continuous industrial production, making the mould easier to integrate into the customer's existing injection process.

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FAQ

Q1: Can different preform weights be developed with the same short neck specification?
A1: Yes, depending on the bottle design and required preform geometry. The cavity and core dimensions can be engineered for the specified preform weight while retaining the required neck finish.

Q2: Can you adjust the mould to match our existing injection machine tonnage?
A2: Yes. We design mould base, opening stroke and ejector structure according to your machine parameters. Provide machine matching check before production.

Q3: What is your maximum available cavity count for this short neck PET preform mould?
A3: We support 48 to 144 cavities. Higher cavity options use balanced hot runner layout to guarantee identical preform weight across all cavities.

Q4: How do you handle mould trial and sample delivery?
A4: Full mould test after finishing. Free preform samples for your blowing test. Provide test report, adjust cavity if sample has defects before shipment.

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