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High-Performance Stretch Rod for Stretch Blow Molding Machine

Spare Parts for Filling Machine

High-Performance Stretch Rod for Stretch Blow Molding Machine

The stretch rod is an indispensable core component in stretch blow molding processes, specifically designed for high-speed stretching and blow molding of plastic preforms (PET, PP, PE). During bottle forming, the stretch rod ensures uniform wall thickness distribution and defect-free bottle geometry through precise control of stretching velocity, stroke, and axial force. This enhances molding efficiency and product consistency, particularly suited for intelligent production lines with high-capacity and high-precision requirements.

    Application Fields:

    Application Scenarios:
    Food & Beverage:
    Mineral water bottles; carbonated beverage bottles; edible oil containers (lightweight containers).
    Household & Cosmetic Packaging:
    Cosmetic bottles; detergent bottles; premium fragrance flacons (high-precision bottle geometries).
    Pharmaceutical Sector:
    Medical reagent bottles; IV solution bottles; transparent pharmaceutical vials (sterilization-grade packaging).
    Industrial Packaging:
    Chemical drums; bulk liquid storage tanks (thick-walled containers).

    Core Advantages:

    Reliable Performance:
    Precision-controlled mechanisms combined with wear-resistant materials ensure consistent operational stability during continuous production cycles.
    Broad Compatibility:
    Adaptable to diverse equipment configurations and process variants, enabling flexible responses to dynamic production requirements.
    Cost Efficiency:
    Energy-efficient operation and low-maintenance design significantly reduce total ownership costs (TOC) across the product lifecycle.

    Product Features:

    High-Precision Control
    Utilizes servo motors or hydraulic drive systems for millimeter-level stretch positioning, adapting to diverse bottle designs.
    Rapid dynamic response and high synchronization ensure seamless coordination between stretching and blowing.
    Exceptional Durability
    Constructed with high-strength stainless steel or special alloys, featuring hard anodized/coating surfaces for wear/corrosion resistance and extended lifespan.
    Built-in damping structure minimizes mechanical shock during high-speed operation, reducing maintenance needs.
    Intelligent Temperature Control
    Optional built-in cooling/heating channels enable precise temperature regulation, preventing preform deformation or crystallization due to thermal variance.
    Broad Compatibility
    Modular design compatible with various blow molding machines (single-stage/two-stage), customizable in length, diameter, and connection interfaces.

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