PET Preform Mold Core Inserts | Precision Tooling for Bottle Packaging

Product Overview

Bottle Packaging Precision Mould Parts – PET Preform Mold Core Inserts are critical forming components used in PET preform injection moulds, directly affecting neck finish accuracy, wall thickness consistency, and overall mould stability. Manufactured by Senlan Precision, these core inserts are produced strictly on a custom / OEM / Built-to-Print basis, ensuring full compatibility with multi-cavity PET preform mould systems used in high-volume bottle packaging production.

Key Features & Advantages

• Dedicated core inserts for PET preform injection moulds

• High dimensional consistency for neck finish and inner bore

• Stable performance in multi-cavity and high-cycle moulds

• Optional mirror polishing for smooth demoulding

• Custom materials, hardness, and surface treatment per drawing

• Designed for long service life and easy replacement

Applications / Industry Use

• PET preform injection moulds

• Bottle and container packaging moulds

• High-output beverage and liquid packaging systems

• Medical and specialty container preform moulds

• Multi-cavity mould platforms requiring strict cavity balance

Mould Structure & Design Description

PET preform mold core inserts are precision components forming the internal geometry of the preform, especially the neck and thread-related areas. Their design directly impacts sealing performance and downstream blow molding consistency.

Structural considerations include:

• Concentricity between core insert and cavity

• Accurate neck finish geometry and thread profile

• Thermal stability under continuous injection cycles

• Compatibility with existing cooling and hot runner systems

• Repeatable interchangeability for maintenance efficiency

All designs are manufactured strictly according to customer-provided drawings and technical standards.

Manufacturing Capability & CNC Machining

Core inserts are produced through a controlled, high-precision machining process:

• CNC turning and milling for structural accuracy

• Precision grinding to achieve tight tolerances

• Polishing or surface finishing as specified

• Optional heat treatment for wear resistance

• Final dimensional inspection before delivery

Manufacturing is supported by advanced machining equipment from MAKINO and HARDINGE, ensuring stable quality suitable for export-grade PET mould components.

Custom Development / OEM Cooperation Process

1. Drawing and specification review

2. Engineering feasibility and tolerance evaluation

3. Material and process confirmation

4. CNC machining and finishing

5. In-process and final inspection

6. Protective packaging and shipment

All PET preform core inserts are supplied as Built-to-Print OEM components.

Quality Control & Export Experience

• ISO-based quality management system

• Incoming raw material inspection

• In-process dimensional and concentricity checks

• Final inspection reports available upon request

• Extensive export experience with precision mould components for international customers

Related Products

• PET preform mold cavity inserts

• Neck finish core pins

• Multi-cavity mold cores and sleeves

• Hot runner compatible mould inserts

• Customized injection mould spare parts

FAQ – Technical & Purchasing

Q1: Are these PET preform core inserts standard parts?
No. All components are custom-made according to customer drawings and mould specifications.

Q2: Can these inserts be used in multi-cavity moulds?
Yes. They are designed for stable performance in high-cavity PET preform mould systems.

Q3: What materials are available?
Material options are selected based on drawings and application requirements, including hardened and corrosion-resistant steels.

Q4: Can polishing level be customized?
Yes. Surface finish and polishing grade can be specified according to mould requirements.

Request a Quote

To receive pricing and lead time for PET Preform Mold Core Inserts, please provide drawings or technical specifications.
Senlan Precision specializes in OEM manufacturing of high-precision injection mould components for bottle packaging, cosmetic, and medical mould applications.