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Manufacturing

Manufacturing Capabilities

Precision Manufacturing for High-Cavitation PET Preform Moulds

At SZ-MOLDTECH, PET preform mould manufacturing is built around precision machining, controlled processing and consistent multi-cavity assembly. We manufacture high-cavitation preform moulds from 48 to 144 cavities, covering mould bases, cavity and core components, neck finish components, hot runner interfaces and other critical mould parts.

Our manufacturing process combines CNC machining, EDM, precision grinding, dimensional inspection and controlled assembly to meet the accuracy and repeatability required for high-speed PET preform production.

  • Mould bases & plates
  • Cavity & core components
  • Neck finish components
  • Hot runner interfaces
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Precision Machining

Precision Machining for PET Preform Mould Components

The performance of a high-cavitation PET preform mould starts with the accuracy of its individual components. Our machining processes are selected according to component geometry, material and tolerance requirements to achieve repeatable dimensions and reliable component fit.

CNC Machining

CNC machining is used for mould bases, plates and precision mould components requiring controlled dimensions and repeatable geometry.

EDM Processing

EDM is applied to fine features and complex geometries where conventional cutting cannot achieve the required profile or accuracy.

Precision Machining for PET Preform Mould Components

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Precision Grinding

Precision grinding is used for critical mating surfaces and functional components where dimensional consistency, flatness and surface finish affect mould assembly.

Dimensional Inspection

Critical dimensions are checked throughout the manufacturing process to control variation before components proceed to the next stage.
Production Process

Controlled Manufacturing Process from Steel to Finished Mould

A PET preform mould consists of numerous precision-machined and assembled components. Our manufacturing process is organized to control accuracy at each critical stage, from material preparation and machining to assembly and trial moulding.

Material Preparation

Mould steel and component materials are prepared according to the approved mould design and processing requirements.
01

Rough Machining

Initial machining establishes the basic geometry, reference surfaces and allowances required for subsequent precision processing.
02

Precision Machining

Critical dimensions, interfaces and functional features are machined according to approved drawings and process requirements.
03

EDM and Fine Processing

Fine geometries and features requiring EDM or specialized finishing are processed and subsequently inspected.
04

Precision Grinding

Critical surfaces are ground to achieve the specified dimensional accuracy, flatness and surface condition.
05

Component Inspection

Key dimensions, interfaces and functional surfaces are checked before components proceed to mould assembly.
06

Mould Assembly

Cavity, core, neck finish, hot runner and mould structure components are assembled and fitted according to the mould design.
07

Trial Moulding

The completed PET preform mould is trialed to verify mould operation, preform quality and cavity-to-cavity consistency before delivery.
08
Equipment

Manufacturing Equipment for Precision PET Mould Production

Precision mould manufacturing depends on the right combination of machining, finishing and inspection equipment. Our manufacturing equipment supports different stages of PET preform mould production, from structural machining to precision component processing and final verification.

CNC machining centre for mould bases and plates
Equipment 01

CNC Machining Centers

Mould bases, plates and precision mould components
EDM machine for fine mould features
Equipment 02

EDM Machines

Fine features and complex geometries
Precision grinding equipment for mating surfaces
Equipment 03

Precision Grinding Equipment

Critical mating and functional surfaces
Coordinate measuring equipment for dimensional inspection
Equipment 04

Coordinate Measuring Equipment

Dimensional and geometric inspection
Precision inspection instruments for component verification
Equipment 05

Precision Inspection Instruments

Component and assembly verification
Trial moulding equipment for pre-shipment testing
Equipment 06

Trial Moulding Equipment

Pre-shipment mould performance testing

Equipment selection and process parameters are matched to the requirements of high-cavitation PET preform mould components.

Critical Components

Precision Control of Critical PET Preform Mould Components

Not every mould dimension has the same functional importance. Our manufacturing process places particular attention on components and interfaces that directly influence preform geometry, mould alignment and production stability.
Cavity, core, neck finish and hot runner components of a PET preform mould
  • 01

    Cavity and Core Components

     
    Cavity and core components define the main geometry of the PET preform. Their dimensions, alignment and surface condition must remain consistent across all cavities.
  • 02

    Neck Finish Components

     
    Neck finish components require precise machining and fitting to maintain consistent thread, neck and sealing dimensions across the complete cavity set.
  • 03

    Mould Interfaces

     
    Locating surfaces and mould interfaces are manufactured and inspected to support accurate positioning between mating mould components.
  • 04

    Hot Runner Interfaces

     
    Hot runner components require accurate positioning and reliable fitting to support stable melt delivery across multiple cavities.
  • 05

    Cooling Structures

     
    Cooling channels are manufactured according to the mould design to support effective heat transfer and stable moulding conditions.

CAVITY RANGE

Manufacturing Capability for 48–144 Cavity PET Preform Moulds

As cavity numbers increase, maintaining consistency between individual cavities becomes increasingly important. Dimensional variation in a single component can affect cavity alignment, preform dimensions and overall mould performance.

SZ-MOLDTECH manufactures 48, 72, 96, 128 and 144 cavity PET preform moulds according to preform design, neck finish, injection machine and required production output.

  • Cavity-to-cavity dimensional consistency
  • Core and cavity alignment
  • Neck finish accuracy
  • Cavity pitch and positioning
  • Mould interface accuracy
  • Hot runner component fit
  • Cooling circuit integrity
  • Repeatable multi-cavity assembly

These controls are essential for high-speed PET preform production, where mould consistency directly affects production stability.

  • 48

    Cavities

  • 72

    Cavities

  • 96

    Cavities

  • 128

    Cavities

  • 144

    Cavities

Assembly

Precision Assembly for Multi-Cavity PET Preform Moulds

Machining accuracy alone does not determine the final performance of a high-cavitation mould. Individual components must also be correctly fitted, aligned and assembled.

During assembly, critical components are checked for dimensional compatibility and operating condition before the mould proceeds to trial production.

  •  
    Component Fit

    Mating components are checked against the required dimensions and interfaces.

  •  
    Cavity Alignment

    Cavity and core components are positioned to maintain consistent alignment across the mould.

  •  
    Moving Components

    Ejection and mould-opening mechanisms are checked for correct movement and operation.

  •  
    Hot Runner Integration

    Hot runner components are installed and checked according to the mould configuration.

  •  
    Cooling Circuit Connection

    Cooling circuits and connections are checked before trial moulding.

Trial Moulding Before Delivery

VERIFICATION

Trial Moulding Before Delivery

A PET preform mould is not fully validated when machining and assembly are complete. Trial moulding provides an opportunity to evaluate how the complete mould performs under actual injection conditions.

  •  

    Preform weight consistency

  •  

    Neck finish dimensions

  •  

    Preform appearance

  •  

    Cavity-to-cavity consistency

  •  

    Injection stability

  •  

    Cooling performance

  •  

    Ejection operation

  •  

    Overall mould running condition

The trial process helps identify manufacturing or assembly issues before the mould is shipped to the customer's production facility.

Machine Compatibility

PET Preform Mould Compatibility with Major Injection Machines

  •   SZ-MOLDTECH manufactures PET preform moulds for different injection moulding platforms and machine configurations.
  •   Depending on project requirements, moulds can be developed for platforms including HUSKY, NETSTAL, HUAYAN, UNIQUE and KRAUSSMAFFEI.
  • HUSKY
  • NETSTAL
  • HUAYAN
  • UNIQUE
  • KRAUSSMAFFEI
Machine compatibility is reviewed during engineering and manufacturing
  • Mould pitch
  • Cavity layout
  • Platen interface
  • Stack height
  • Injection requirements
  • Hot runner interface
  • Cooling connections
  • Ejection configuration

The final mould interface is confirmed against the customer's machine model and technical specifications before manufacturing.

CONSISTENCY

Built for Cavity-to-Cavity Consistency

For high-cavitation PET preform moulds, manufacturing accuracy must be repeatable across the complete cavity set. The relationship between each manufacturing stage is critical:

  •  

    Machining Accuracy

    01

  •  

    Component Fit

    02

  •  

    Cavity Alignment

    03

  •  

    Preform Consistency

    04

  •  

    Mould Performance

    05

This is why our manufacturing process focuses on component-level control rather than relying only on final mould inspection.

The objective is to maintain consistent dimensions, accurate component fit and stable mould operation across the complete multi-cavity mould.

Manufacturing for High-Speed PET Preform Production

PET preform moulds used in beverage and packaging production operate repeatedly under demanding cycle conditions. Manufacturing therefore needs to account for dimensional accuracy, component fit, thermal management and repeated mechanical movement.

Our manufacturing process addresses these requirements through precision machining, component inspection, multi-cavity assembly and trial moulding.

SZ-MOLDTECH

Combines Precision Machining, Controlled Mould Assembly, And Rigorous Testing To Deliver Reliable Pet Preform Mould Performance.

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